Firstohm MM(P) Metal Film MELF Resistors – High Pulse, High Reliability SMD Solutions

Compact, robust, and precision-engineered resistors for demanding electronic applications.

The Firstohm MM(P) Metal Film MELF Resistor offers high pulse withstanding capability, superior heat dissipation, and excellent mechanical stability in a compact SMD package. Designed to meet the stringent demands of modern electronics, these resistors are ideal for applications where reliability, precision, and durability are critical. From automotive circuits to industrial and communication devices, the MM(P) series ensures consistent performance under extreme conditions.

Key Features

• High Pulse Withstanding – capable of handling electrical surges without performance degradation.

• Superior Thermal Performance – efficiently dissipates heat to maintain stability in high-temperature environments.

• Robust Mechanical Strength – resists vibration and thermal shock for long-term reliability.

• Wide Resistance Range – 0.1 Ω to 330 kΩ with ±1%, ±2%, ±5% tolerances.

• Compact MELF SMD Package – easy to integrate into space-constrained PCB designs.

Applications & Target Markets

The MM(P) series is suitable for a wide range of electronics applications, including:

• Automotive electronics (ECUs, sensors, power modules)

• Industrial control systems

• Communication devices

• High-performance power supplies and instrumentation

• Any application requiring reliable resistors under high pulse, thermal, or mechanical stress

Get the Full Firstohm MM(P) Metal Film MELF Resistors Datasheet

Access detailed specifications, performance data, and application insights to support your automotive designs

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Summary

Compact, high-reliability, and engineered for demanding applications, Firstohm MM(P) Metal Film MELF Resistors deliver consistent performance under stress, making them the perfect choice for automotive, industrial, and high-performance electronic designs.

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Product in Action: Autosport Data Acquisition Shunt

High-reliability connectivity for Formula Student data-logging systems

In Formula Student racing, accurate and reliable data is critical to improving vehicle performance. Data acquisition shunt systems collect signals from key vehicle subsystems, enabling teams to analyze performance, optimize design, and make informed engineering decisions. Connector reliability plays a vital role in ensuring uninterrupted data and power transmission in demanding motor-port environments.

Key Features

• Compact and lightweight connector solutions
• High resistance to vibration and mechanical stress
• Reliable signal and power integrity
• Suitable for space-constrained electronic assemblies
• Ideal for performance in motorsport applications

Application

• Formula Student race cars
• Data acquisition and logging systems
• ECU, steering, and gearbox monitoring

Markets:

• Motorsports
• Automotive engineering education
• Student racing teams and R&D projects

Engineering Background

Formula Student vehicles operate in high-vibration, high-stress environments where space and weight are tightly controlled. Components must be readily available, easy to integrate, and capable of delivering consistent electrical performance. Off-the-shelf connectors that combine compact design with proven durability are essential to meet these engineering challenges.

Harwin Solution

Harwin provides a reliable interconnect solution using:

• Gecko connectors for signal transmission
• Datamate Mix-Tek connectors for power delivery

Together, these connectors meet vibration requirements while offering excellent performance-to-size ratio, making them ideal for motorsport data acquisition systems.

Designing a motorsport data acquisition system?

Let our team help you select the right Harwin connector solution for your application.

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Summary

Harwin’s Gecko and Datamate Mix-Tek connectors deliver compact, high-reliability signal and power connectivity for Formula Student data acquisition shunt systems. Built to withstand vibration and space constraints, they are a trusted choice for high-performance autosport applications.

Product in Action: Contactless Body Temperature Measurement

Precision connectivity supports reliable thermal imaging and non-contact medical screening systems.

Contactless body temperature measurement is widely used for fast, non-invasive health screening in public and medical environments. Thermal imaging systems enable accurate temperature detection without physical contact, supporting efficient monitoring in high-traffic areas.

Behind these systems, reliable fine-pitch connectivity is essential to ensure accurate data transfer, stable performance, and precise mechanical alignment within compact device designs.

Key Features

• 5mm pitch connectivity for compact medical devices
• Raised shoulder design for precise board-to-device alignment
• Reliable electrical performance for accurate temperature data capture
• Space-saving form factor for constrained PCB layouts

Application

• Thermal imaging devices
• Fever screening systems
• Non-contact medical monitoring equipment

Markets:

• Healthcare and medical devices
• Public safety and access control
• Transportation hubs and public facilities

Engineering Background

Thermal imaging systems identify elevated body temperature by detecting heat at specific facial reference points, such as the inner corner of the eye. These devices rely on precise internal alignment and stable electrical connections to ensure measurement accuracy and consistent system performance.

The Challenge

Engineers require a 0.5mm pitch socket similar to existing sub-miniature solutions, but with a raised shoulder to meet specific board-to-device positioning requirements. Standard connectors could not provide the required mating height while maintaining a compact footprint.

Harwin Solution

Harwin developed a customized variation of the H3155 sub-miniature socket, featuring a shoulder positioned further down the socket body. This design raises the mating face to the required height, ensuring precise alignment, reliable connectivity, and compatibility with space-constrained medical device designs.

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Summary

Reliable internal connectivity plays a vital role in the performance of all-in-one ventilator units. Harwin’s Archer IDC connectors help engineers achieve compact, lightweight, and dependable designs — supporting continuous patient care in portable medical environments

Walsin Automotive MLCC Solutions — Built for Extreme Reliability

Durable Components for Extreme Conditions

When it comes to automotive electronics, failure is not an option. From EV systems to critical control units, every component must perform—no matter the environment.

Walsin Automotive MLCCs (Multilayer Ceramic Capacitors) are engineered to deliver stable, high-reliability performance under extreme heat, constant vibration, and long operating cycles.

Whether you’re developing next-generation EV platforms or enhancing conventional systems, Walsin MLCC solutions ensure your designs stay robust, efficient, and dependable.

Key Features

✅ AEC-Q200 Qualified Reliability
Designed and tested to meet stringent automotive standards, ensuring consistent performance under harsh environmental and electrical conditions — giving engineers confidence in long-term deployment without unexpected failures.

🌡️ High Temperature Stability
Maintains stable capacitance and electrical performance even under extreme temperature fluctuations — ideal for under-the-hood and high-power automotive applications where thermal stress is unavoidable.

🔧 Anti-Vibration Design
Engineered to withstand continuous mechanical stress and vibration, reducing the risk of cracks or failure in demanding automotive environments — ensuring system reliability even on rough terrain.

⏳ Long-Term Durability
Built for extended operational lifecycles with minimal degradation over time — helping reduce maintenance requirements and ensuring stable performance across the entire lifespan of the vehicle.

📦 Compact, High-Density Design
Optimized for space-constrained PCB layouts, enabling efficient circuit design without compromising performance — perfect for modern automotive electronics where miniaturization is critical.

Applications & Target Markets

Built for the systems driving the future of mobility:

• ⚡ Electric Vehicles (EV) & Charging Systems

• 🚗 ADAS & Safety Systems

• 🔋 Battery Management Systems (BMS)

• 🎛️ Infotainment & Connectivity

• ⚙️ Powertrain & ECU

Ideal for: Automotive OEMs, Tier 1 suppliers, and EV innovators.

Get the Full Walsin Automotive MLCC Datasheet

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Summary

Walsin Automotive MLCC solutions deliver high reliability, thermal stability, and robust performance — all in a compact, automotive-grade design built for real-world conditions. Engineered to meet AEC-Q200 standards, they are trusted components for today’s increasingly complex vehicle electronics.

With iConnexion Asia as your local distribution partner, you get more than just components. You gain access to ready stock, responsive support, and a team that understands your application requirements from design to deployment.

When your automotive systems demand performance you can depend on — Walsin Automotive MLCC delivers.

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Harwin Archer IDC Connectors for Portable Ventilator Connectivity

Compact internal connections supporting portable medical systems

All-in-one ventilator units are engineered to deliver continuous respiratory support and integrated patient monitoring within a compact, portable form factor. These systems must operate reliably across demanding environments — including emergency response, inter-facility patient transport, and hospital wards — making internal connector selection a critical element of the overall system design.

Key Features

• 1A Per Contact Current Rating Sufficient for power distribution across multi-module ventilator architectures without oversizing the connector.
• 1.27mm (0.05″) Contact Pitch Enables high-density PCB layouts within compact medical enclosures.
• Gold-Flashed Contact Finish Supports stable, low-resistance mating over repeated connection cycles.
• Operating Range -40°C to +105°C Reliable performance across the full range of portable medical operating environments.
• Polarised Keyed Housing Prevents mis-mating during assembly and field servicing, reducing risk of assembly error.

Application

All-in-one ventilator systems are commonly deployed in:

• Emergency and ambulance services
• Patient transport and transfer
• Hospital wards and intensive care units
• Portable and modular medical equipment

These environments demand uninterrupted electrical performance, even under repeated handling, mechanical vibration, and frequent connector mating cycles.

Engineering Background

Modern portable ventilator units are built on modular electronic architectures that consolidate control boards, display interfaces, pressure and flow sensors, and power management circuitry into a single enclosure.

Internal connectivity links these subsystems across short board-to-cable distances, often within tightly constrained PCB layouts. As miniaturisation requirements intensify, engineers face increasing pressure to reduce connector footprint and cable bulk without compromising signal integrity or mechanical retention.

The Challenge

Designing internal connectivity for portable ventilator units involves balancing several competing constraints:

• Space: Enclosure volumes are tightly optimised, requiring low-profile connectors and flat cable routing with minimal bend radius
• Weight: Every gram matters in portable and wearable medical devices; connector and cable mass must be minimised
• Cable management: Flat ribbon cables must route predictably within enclosures without interference or strain on PCB pads
• Mechanical retention: Connectors must withstand repeated vibration loads during transport without unintended unmating
• Assembly reliability: Polarisation and latching mechanisms are essential to prevent mis-mating during manufacturing and field servicing
• Operational continuity: In life-critical applications, connector failure is not an acceptable failure mode — rated mating cycles and contact resistance stability must be verified against expected service life

Harwin Solution

Harwin’s Archer IDC connector series provides a compact, board-to-cable interconnect solution well-suited to the internal architecture of portable medical devices.

Key technical attributes include:

• Low-profile ribbon cable interface: The IDC termination system accommodates flat flexible cable, enabling organised, space-efficient routing within compact enclosures
• Surface-mount PCB footprint: SMT mounting minimises board real estate and eliminates through-hole drilling, supporting high-density PCB layouts
• Positive latching mechanism: Secure mating retention reduces the risk of unintended disconnection under vibration or handling loads
• Polarised connector housing: Keyed mating prevents incorrect insertion during assembly or maintenance, reducing risk of assembly error in production environments
• Proven, catalogued components: Standard, off-the-shelf availability supports rapid prototyping, design qualification, and supply chain continuity — critical for medical device programmes with strict change-control requirements

Download the Harwin Archer IDC Datasheet

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Summary

Reliable internal connectivity plays a vital role in the performance of all-in-one ventilator units. Harwin’s Archer IDC connectors help engineers achieve compact, lightweight, and dependable designs — supporting continuous patient care in portable medical environments

Powering Efficient and Reliable EV Power Systems

Key component solutions supporting traction inverter and on-board charger systems in modern electric vehicles.

Electric vehicles (EVs) rely on advanced power electronics to efficiently manage energy conversion, motor control, and battery charging. Two critical subsystems in this architecture are the traction inverter and the on-board charger (OBC).

The traction inverter converts DC power from the battery into AC power to drive the electric motor, while the OBC manages the safe and efficient charging of the battery from external power sources.

To ensure reliable operation, these systems require high-performance electronic components capable of handling high voltage, high current, and demanding automotive environments.

Application

Traction inverter and OBC systems are widely used across various electric mobility platforms, including:

• Battery Electric Vehicles (BEV)

• Hybrid Electric Vehicles (HEV)

• Plug-in Hybrid Electric Vehicles (PHEV)

• Electric buses and commercial vehicles

• EV charging and power management systems

These applications demand components that deliver precision, durability, and electrical stability under harsh operating conditions.

Engineering Background

In an EV power architecture, the traction inverter controls the speed and torque of the electric motor through high-frequency switching and pulse width modulation (PWM). At the same time, the on-board charger converts AC input power into regulated DC power to charge the vehicle’s battery.

This process requires multiple supporting components, including:

• Precision resistors for voltage measurement and current sensing

• Reliable connectors for secure electrical connections

• Surge protection components for transient voltage events

• Oscillators for precise timing and control signals

• Energy storage components for power stabilization

Each component plays a crucial role in maintaining system efficiency, safety, and long-term reliability.

The Challenge

Designing EV traction inverter and OBC systems presents several engineering challenges:

• Managing high voltage and high current power conversion

• Ensuring stable and accurate control signals for motor operation

• Protecting circuits from surges and electrical transients

• Maintaining reliable connections in vibration and harsh environments

• Stabilizing power during rapid load changes

Engineers must carefully select components that meet these demanding performance and reliability requirements.

iConnexion Solution

iConnexion supports EV power system development with a trusted ecosystem of components from five leading brands:

1. DACO Semiconductor – SiC MOSFET

   • High-efficiency switching for traction inverter and OBC

   • Handles high voltage and high current in demanding EV circuits

2. Fujipoly – SARCON Thermal Materials

   • Excellent thermal conductivity for power modules

   • Gap-filling properties reduce thermal resistance

   • Reliable under extreme automotive temperature cycles

3. Harwin – Press-Fit Pins

   • Secure, vibration-resistant connections for PCBs

   • Compact design for space-constrained electronics

4. Harwin – Pannut Spacers

   • Robust mechanical support for assemblies

   • Maintains board alignment and stability under vibration

5. Walsin – Automotive Passive Components

   • High-performance resistors, capacitors, and inductors

   • Ensure voltage regulation, current sensing, and stable operation

Summary

As electric vehicles continue to evolve, the demand for high-performance power electronics and reliable components becomes increasingly important.

By combining proven technologies from leading component manufacturers, iConnexion helps engineers develop safe, efficient, and high-performance EV power systems for next-generation electric mobility.

USB Type-C Connectivity for Modern Embedded & Industrial Systems

Compact, High-Speed Interfaces for Data and Power Delivery

As electronic devices become smaller and more powerful, connectivity solutions must support higher data speeds, efficient power delivery, and compact integration. USB Type-C has emerged as a preferred interface for modern embedded and industrial systems due to its versatility, ease of use, and performance.

Harwin’s USB Type-C connectors are designed to support these requirements, providing reliable connectivity for applications where space, durability, and performance matter.

Key Features

• High-Speed Data Performance
  Supports modern data transfer requirements for embedded and industrial electronics.

• Power and Data in One Connector
  Enables charging and communication through a single compact interface.

• Reversible Type-C Design
  Improves usability and reduces incorrect insertion.

• Compact Board-Mount Footprint
  Ideal for space-constrained PCB layouts.

Applications

Harwin USB Type-C connectors are suitable for a wide range of embedded and industrial applications, including:

• Embedded control boards

• Industrial equipment and automation systems

• Smart equipment interfaces

• Data and charging ports in compact electronic devices

• Communication modules and development platforms

These systems require a reliable interface capable of handling both power delivery and high-speed data transmission within limited space.

Engineering Background

As system complexity increases, designers must integrate more functionality into smaller devices. Traditional USB interfaces often required separate connectors for power and data or lacked the performance needed for modern applications.

USB Type-C addresses these challenges by combining compact mechanical design with enhanced electrical capability, supporting both higher data rates and improved power handling within a single connector platform.

The Challenge

Engineers designing embedded and industrial systems often face:

• Limited PCB real estate

• Growing demand for faster data communication

• Need to minimise the number of external interfaces

• Ensuring reliable and user-friendly connectivity

Selecting the right USB connector is essential to balance performance, size, and durability.

Harwin Solution

Harwin’s USB Type-C connectors are designed to meet the performance and integration needs of modern electronics. With a compact footprint, support for high-speed data, and combined power delivery capability, they provide a practical solution for embedded and industrial system designers.

Their board-mount design enables secure integration into PCBs while maintaining space efficiency and reliable connectivity.

Download the USB Type-C Technical Drawing

Access detailed mechanical dimensions, PCB layout recommendations, and mounting specifications to support your design requirements.

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Summary

USB Type-C has become a key interface for modern embedded and industrial systems, offering speed, power, and compact integration in a single connector. Harwin’s USB Type-C connectors provide a reliable and practical solution for designers seeking efficient connectivity in space-constrained and performance-driven applications.

Taitien OCXO — Timing Accuracy That Powers Critical Systems

Ultra-Stable. Ultra-Accurate.

Taitien’s Oven-Controlled Crystal Oscillator (OCXO) is engineered to deliver
exceptional frequency stability and accuracy for systems where even the smallest timing drift
can have serious consequences. Whether you’re designing for 5G base stations, high-density
data centers, or mission-critical industrial equipment, the Taitien OCXO keeps every part
of your system perfectly in step.

Key Features

Ultra-Low Frequency Drift
Maintains precise frequency output even as temperatures fluctuate — keeping your system synchronized under real-world operating conditions without constant recalibration.

High Accuracy & Long-Term Stability
Tight frequency tolerance and superior aging characteristics reduce maintenance overhead
across the full product lifecycle — fewer field interventions, lower total cost of ownership.

Low Phase Noise
Exceptional signal purity for RF, radar, and high-speed communications equipment that demands
clean, jitter-free clocking. Less noise means better system performance at every level.

RoHS Compliant
Meets international environmental compliance standards out of the box — no additional
qualification effort required for your design.

Compact SMT-Ready Package
Designed for seamless PCB integration with minimal external components, reducing board
space and simplifying your overall system design.

Applications & Target Markets

The Taitien OCXO is purpose-built for industries across Asia Pacific where timing errors
carry real operational risk:

• Telecom & 5G Infrastructure — Base station synchronization, backhaul timing, and fronthaul network clocking
• Data Centers — Server clocking, network switching, and time-sensitive networking (TSN) applications
• Satellite & Aerospace — Precision timing for navigation systems and communication payloads
• Industrial Automation — Coordinated machine timing and process control on the factory floor
• Financial Networks — Transaction timestamping requiring microsecond-level accuracy and auditability
• Test & Measurement Equipment — Reference clocking for high-precision instrumentation

Download the Taitien OCXO Datasheet

Get the full technical specification — including electrical characteristics, mechanical
dimensions, PCB footprint, ordering guide, and application notes — free and instant.

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Summary

The Taitien OCXO delivers ultra-low frequency drift, low phase noise, and proven
industrial-grade reliability — all in a compact, RoHS-compliant package. It’s one of
the most capable precision timing components available to engineers across Asia Pacific today.

With iConnexion Asia as your local distribution partner, you get more than just a component.
You get local stock availability, fast lead times, engineering expertise, and a team that
understands your application.

When your system demands timing you can count on — the Taitien OCXO delivers.

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