W31

Cement coated wirewound resistor

Lifecycle:

Active (Mature)

Brand:

Welwyn

Series:

W30

Specifications

Series W30
Application High power
Mounting Through hole
Package Axial
Technology Wirewound
Approval None
Example MPN W31-1K0FA1
Termination Options
  • Pb-free
  • Pb-bearing
Power 3W
Rated Ambient Temperature 25°C
De-rate to 0W Ambient Temperature 280°C
Max Ambient Temperature 155°C
LEV 100V
Resistance min 0.01Ω
Resistance max 10kΩ
Critical Resistance (where applying LEV dissipates Pr) 3.33kΩ
Tolerance 1%
TCR 100ppm/°C
Isolation Voltage of Insulation 500V
RoHS Compliant (if Pb-free) Yes (see below)
RoHS Exemption None
China RoHS (if Pb-free) Compliant
REACH Status (if Pb-free) Reviewed to 235 SVHCs (see below)
CMRT Conflict Mineral Status Rev 6.22 Next update May 2023 (see below)
EMRT Extended Mineral Status No EMRT available
Termination Finish (if Pb-free) e3 - Sn hot dipped
Termination Finish (if Pb-bearing) 95/5
How to Specify Pb-Free Part number suffix is not PB
ECCN EAR99
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
Launch Date Pre-2000
Lifecycle Active (Mature)
EOL Date / YTEOL Estimate 5 years or more. (Reviewed May 23)
Latest PCN Date No PCNs
Alternative Part Number -

Resources & Technical Documents

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