Vitreous enamelled wirewound resistor








Series W20
Application High power
Mounting Through hole
Package Axial
Technology Wirewound
Approval IECQ-CECC40201
Example MPN W21-3K3JI
Termination Options Pb-free
Product Brand Welwyn
Power 3W
Rated Ambient Temperature 70°C
De-rate to 0W Ambient Temperature 315°C
Max Ambient Temperature 200°C
LEV 100V
Resistance min 0.1Ω
Resistance max 10kΩ
Critical Resistance (where applying LEV dissipates Pr) 3.33kΩ
Tolerance 1%
TCR 75ppm/°C
Isolation Voltage of Insulation See datasheet: ? V
RoHS Compliant (if Pb-free) Yes (see below)
RoHS Exemption None
China RoHS (if Pb-free) Compliant
REACH Status (if Pb-free) Reviewed to 224 SVHCs (see below)
CMRT Conflict Mineral Status Rev 6.1 Next update May 2022 (see below)
EMRT Extended Mineral Status First issue due Nov 2021
Termination Finish (if Pb-free) e1 - SnAgCu
Termination Finish (if Pb-bearing) Not available
How to Specify Pb-Free All part numbers are Pb-free
Packing Tape & ammo pack
Quantity 1000
Nett Weight Each -
Reflow Process Not applicable
MSL Not applicable
Wave Process Compatible, 260+-5 deg. C, 1 or 2 x 5+-1 seconds contact time
Shelf-life None defined, but solderability test prior to use is recommended after two years from date of manufacture
Lifecycle Mature
EOL Date / YTEOL Estimate 5 years or more from May 2022
Latest PCN Date 12 Jul 21
Alternative Product -

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