Welwyn Products

Resistors

We have several tools on site to enable you to find the right technology and product for your application:

• Resistor Family Datasheet Finder
  If you know the family / series / product reference
  
  I know which resistor 1600-1900 3810 4501-4507 4530 4802-4832 ALFR-2 AS CAR CC CHP CR CRT DSC EMC F FC4 FCR FM FN GC GCF GS-3 HR HVC HVP LHVC LOB LRCS LRF LRF3W LRK LRZ MAR MFP MFR MFR4P MF-S MH OAR OARS OARS XP PCF PCFRC PCR PFC PFC Attenuator PFC Divider PFC Military PFCHF PFCHT PLO PPS PPW PR PTCR PW PWC PWRL RC RCP RG RTD SC3 SOT143 SOT23 SPFSP20F SPHSPF SPP SQM SQP T T (T40) T43 T44 TD4 ULR ULW V757-761 VRW W21-4 W31 WA82-85 WA83Z WA84F WA84Z WA85Z WCR WDBR WH WHPC WL4 WMO-S WP-S WPYP WRM WSM ZEROHM -Select a Resistor Network.. PFC SOIC SON SOT WNCR

• Classification Search
  If you wish to explore product options by application,
  technology or package type
  

  Select an Application... ** Any ** Adjustable CECC/MIL Approved Current Sense Dividers Flameproof Fusible General Purpose High Value/Voltage High Power Precision Pulse Withstanding Temperature Sensing Network/Arrays Zero-ohm Link

  Select a Technology... ** Any ** Carbon Film Carbon Comp Metal Element Metal Film Metal Foil Metal Glaze Metal Oxide Metal Strip TAN-Film Thick Film Wirewound

  Select a Package... ** Any ** Axial Though Hole Heatsink Mounted Radial Though Hole SMD Chip SMD Melf SMD Other Tubular Wirebond Chip

• Parameter Search
  The most comprehensive tool to narrow down your product choice by specific technical requirements
  
  

  Lowest Res:	Ohms K Ohms M Ohms G Ohms T Ohms	Highest Res:	Ohms K Ohms M Ohms G Ohms T Ohms
  Tol:	Any 0.005 0.01 0.02 0.05 0.1 0.25 0.5 1 2 5 10 20	TCR:	Any 2 5 10 15 25 50 100 200
  Power@70°C:		Power@25°C:
  LEV:		Package:	Select a Package... ** Any ** SMD Chip Wirebond Chip SMD Melf SMD Other Axial Though Hole Radial Though Hole Tubular Heatsink Mounted

  Enter the parameters you wish to specify in any or all of the fields as follows:

  Lowest / Highest Resistance Value– enter here to define the value range you require. If you are looking for one specific value, enter that value in both fields. The search will check only that the values requested are within range for each product. Actual values available are generally in accordance with standard value ranges defined on the datasheet, e.g. E24.

  Tolerance – enter here the maximum percentage tolerance on resistance value. The search may find products that are available at tighter tolerances than you have specified.

  TCR – enter here the maximum Temperature Coefficient of Resistance (TCR) required. The search may find products that are available at lower TCR’s than you have specified.

  Power @ 70°C / 25°C – enter here the minimum power rating required at the stated ambient air temperature. Be sure to select the appropriate rated temperature. If in doubt, use 70°C. The search may find products that are available at higher rated powers than you have specified.

  Limiting Element Voltage – enter here the minimum continuous operating voltage required. In the case of AC, for most products this is the RMS voltage, but for some high voltage products it is the peak voltage. The search may find products that are available at higher LEV’s than you have specified.

• Shortform Catalogue
  Browse the available product summaries and click through to the complete datasheets or related application note.