Datasheet

CRCW0402 Datasheet PDF – Thick Film Chip Resistor

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Part Number: CRCW0402

Function: Standard Thick Film Chip Resistor

Size: 0402 inch Type

Manufacturer: Vishay

Image and Pinouts:

CRCW0402 datasheet

Description

This is Film Chip Resistor. CRCW0402 is a thick film chip resistor series available in a compact 0402 package, designed for general-purpose and high-reliability applications with enhanced power handling capability. It features a robust construction with double-sided printed resistive elements, protective overglaze, and excellent pulse load performance. This resistor series is widely used across automotive, industrial, and commercial electronic circuits requiring stable and compact resistive components.

Features

  • Excellent pulse load capability
  • Enhanced power rating compared to standard 0402 resistors
  • Double-sided printed resistor element for improved reliability
  • Protective overglaze for environmental durability
  • Ni barrier layer with pure tin plating for solder compatibility
  • Compatible with lead-free and lead-containing soldering processes
  • Stable performance under varying thermal conditions

Design Notes

  • Ensure adequate PCB copper area to improve heat dissipation and maintain film temperature limits
  • Consider derating the power based on ambient temperature and thermal resistance
  • Pulse load conditions should be evaluated against application-specific surge requirements
  • Use proper soldering profiles to maintain integrity of the Ni barrier and tin layer
  • Avoid placing near heat-generating components to prevent resistance drift

How to Choose This Part

  • Select based on required resistance value and tolerance
  • Verify power rating with appropriate derating for thermal conditions
  • Choose for compact designs requiring high reliability in small footprint
  • Consider pulse load capability for transient-heavy applications

Applications

  • Automotive electronics
  • Industrial control systems
  • Commercial electronic devices
  • High power density circuit designs

Alternative / Equivalent Products

  • RC0402 series (Yageo)
  • ERJ-2 series (Panasonic)
  • RK73 series (KOA Speer)
  • CRCW0603 series for higher power requirements

Application Information:

When the resistor dissipates power, a temperature rise above the ambient temperature occurs, dependent on the thermal resistance of the assembled resistor together with the printed circuit board. The rated dissipation applies only if the permitted film temperature is not exceeded.

Other data sheets are available within the file:

CRCW0603, CRCW0603562RFKEC, CRCW0805, CRCW1206

 

CRCW0402 Datasheet PDF Download


CRCW0402 pdf

IRFR420B Datasheet – 500V, MOSFET, Transistor ( PDF )

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Part Number: IRFR420B

Function: 500V, N-Channel MOSFET

Package: D-PAK, I-PAK Type

Manufacturer: Fairchild Semiconductor

Image

IRFR420B datasheet pdf

Description

IRFR420B is a 500V N-channel enhancement-mode power MOSFET based on planar DMOS technology, optimized for high-voltage switching applications such as SMPS, PFC circuits, and electronic ballasts. It features low gate charge, fast switching speed, and मजबूत avalanche capability, making it suitable for efficient high-frequency power conversion.

These N-Channel enhancement mode power field effect transistors are produced using Fairchild’s proprietary, planar, DMOS technology.

This advanced technology has been especially tailored to minimize on-state resistance, provide superior switching performance, and withstand high energy pulse in the avalanche and commutation mode. These devices are well suited for high efficiency switch mode power supplies, power factor correction and electronic lamp ballasts based on half bridge.

Features

  • Drain-source voltage: 500V
  • Continuous drain current: 2.3A
  • Low RDS(on): 2.6Ω @ VGS = 10V
  • Low gate charge: ~14 nC (typical)
  • Low reverse transfer capacitance (Crss): ~10 pF
  • Fast switching characteristics
  • High avalanche energy capability (100% tested)
  • Improved dv/dt ruggedness

Pinout

IRFR420B datasheet

Absolute Maximum Ratings (Ta = 25°C)

Parameter Symbol Value Unit
Drain-Source Voltage VDSS 500 V
Gate-Source Voltage VGSS ±30 V
Continuous Drain Current ID 2.3 A
Power Dissipation PD 2.5 W
Channel Temperature Tj 150 °C
Storage Temperature Tstg -55 to 150 °C

Design Notes

  • Gate drive voltage typically 10–15V recommended for full enhancement
  • Use proper gate resistor to control switching speed and EMI
  • Snubber or clamp circuit required in inductive switching (flyback, ballast)
  • Thermal design is critical due to relatively low Pd (2.5W in DPAK)
  • Ensure adequate PCB copper area for heat dissipation
  • Check SOA under high VDS and pulsed current conditions

How to Choose This Part

  • Suitable for high-voltage (400~500V) low-to-medium current applications
  • Preferable when low gate charge and switching loss are important
  • Not ideal for high-current designs due to relatively high RDS(on)
  • Compare with super-junction MOSFETs for higher efficiency designs

Typical Applications

  • Switch Mode Power Supplies (SMPS)
  • Power Factor Correction (PFC) circuits
  • Electronic lamp ballasts (half-bridge topology)
  • High-voltage DC-DC converters
  • LED drivers and offline converters

Alternative / Equivalent Products

  • IRFR420 (non-B version)
  • STP5NK50Z (lower RDS(on) alternative)
  • FQPF5N50C (TO-220 package alternative)
  • IPA50R series (Infineon super-junction upgrade option)

Other data sheets are available within the file: IRFR420, IRFU420B

IRFR420B Datasheet PDF Download


IRFR420B pdf