Lifecycle:
Obsolete
Brand:
Welwyn
Series:
WNCR
| Series | WNCR |
|---|---|
| Application | General purpose |
| Mounting | SMD - solder |
| Package | Chip array |
| Technology | Thick film |
| Approval | None |
| Example MPN | WNCR164-4K7JI |
| Termination Options | Pb-free |
| Power | 0.63W |
|---|---|
| Rated Ambient Temperature | 70°C |
| De-rate to 0W Ambient Temperature | 125°C |
| Max Ambient Temperature | 125°C |
| LEV | 50V |
| Resistance min | 10Ω |
| Resistance max | 1MΩ |
| Critical Resistance (where applying LEV dissipates Pr) | 3.97kΩ |
| Best Tolerance | 5% |
| Best TCR | 200ppm/°C |
| Isolation Voltage of Insulation | Unspecified: ?V |
| RoHS Compliant (if Pb-free) | Yes (see below) |
|---|---|
| RoHS Exemption | 7(c)-I "Pb in glass" |
| China RoHS (if Pb-free) | Contains Pb. EFUP 50 Years |
| 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 PNs are Pb-free |
| ECCN | EAR99 |
| Packing | Paper tape & reel |
|---|---|
| Quantity | 5000 |
| 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 | - |