Lifecycle:
Obsolete
Brand:
Welwyn
Series:
WSM
| Series | WSM |
|---|---|
| Application | General purpose |
| Mounting | SMD - solder |
| Package | SMD formed metal terminal |
| Technology | Wirewound |
| Approval | None |
| Example MPN | WSM2-1K0FI or WSM21001FLFTR |
| Termination Options | Pb-free |
| Power | 2W |
|---|---|
| Rated Ambient Temperature | 70°C |
| De-rate to 0W Ambient Temperature | 275°C |
| Max Ambient Temperature | 275°C |
| LEV | 100V |
| Resistance min | 0.01Ω |
| Resistance max | 1kΩ |
| Critical Resistance (where applying LEV dissipates Pr) | Out of Range: -Ω |
| Best Tolerance | 1% |
| Best TCR | 20ppm/°C |
| Isolation Voltage of Insulation | 1kV |
| RoHS Compliant (if Pb-free) | Yes (see below) |
|---|---|
| RoHS Exemption | None |
| China RoHS (if Pb-free) | Compliant |
| REACH Status (if Pb-free) | See REACH statement pdf (below) |
| CMRT Conflict Mineral Status | See CMRT Excel file (below) |
| EMRT Extended Mineral Status | See EMRT Excel file (below) |
| Termination Finish (if Pb-free) | e3 - Sn matt plated |
| Termination Finish (if Pb-bearing) | Not available |
| How to Specify Pb-Free | All part numbers are Pb-free |
| ECCN | EAR99 |
| Packing | Plastic tape & reel |
|---|---|
| Quantity | 800 |
| Nett Weight Each | - |
| Reflow Process | J-STD-020E |
| MSL | 1 |
| 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 | Obsolete |
| EOL Date / YTEOL Estimate | EOL in May 2025 |
| Latest PCN Date | 9 May 25 |
| Alternative Part Number | - |