WIREWOUND RESISTORS
High Precision Wirewound Resistors
BWW
Designed to meet the exacting requirements of military specification MIL-R-93, the new BWW Series moulded precision wirewound resistors from Tokenchina offer high stability and low temperature coefficient of resistance (TCR). Offering tolerances as accurate as ±0.001 and covering applications from precision to power, the BWW Series resistors feature a wide range of tolerances (±0.001 to ±2%), low inductance, and they are RoHS compliant. The axial configuration the BWW Series makes the resistors ideal for PCB and hard wiring applications. Features
|
Specifications & Dimensions - Precision Wirewound BWW
 |
| Type | Rated Watts at 25°C (W) |
Resistance Range (Ω) |
Tolerance (%) |
TCR (PPM/°C) |
Dimensions (mm) | ||||
| Min | Max | A±0.25 | ΦB±0.25 | Φd | F | ||||
| BWW-0.5 | 0.5 | 0.1 | 100 | ±0.1 ±0.25 ±0.5 ±1 ±2 |
±25 ±50 ±150 |
7.0 | 3.0 | 0.8 | 27.0 |
| BWW-1 | 1.0 | 0.1 | 1K | 11.0 | 3.0 | 0.8 | 31.0 | ||
| BWW-3 | 3.0 | 0.1 | 10K | 15.0 | 5.2 | 0.8 | 34.0 | ||
| BWW-4 | 4.0 | 0.1 | 15K | 18.0 | 6.5 | 0.8 | 38.0 | ||
| BWW-5 | 5.0 | 1 | 24K | 24.0 | 8.4 | 1.0 | 44.0 | ||
| BWW-10 | 10.0 | 1 | 39K | 46.5 | 10.0 | 1.0 | 66.0 | ||
Environmental Characteristics - Precision Wirewound BWW
| Test Items | Test Conditions | Specifications |
| Load Life | 70°C on~off cycle 1000 Hrs. | ΔR ≤ ±1%R |
| Solderability | 235±5°C, 5s(solder bath method) | IEC68-2-20(1968) |
| Insulation Resistance | 500V | >1GΩ |
| Operating Temp. Range | -55°C ~ 175°C | |
| Moisture-Proof Load Life | 40°C 95% RH on~off cycle 21 Hrs. | ΔR ≤ ±0.2%R |
| Resistance to soldering heat | 350°C, 3.5s | ΔR ≤ ±0.1%R |
| Dielectric Withstanding Voltage | 500V AC 1 Min. | ΔR ≤ ±0.1%R |
How to Order - High Precision Wirewound BWW
| BWW | - | 1W | 100R | F | D | P | |||||||||||||||||||||||||||||||||||
|
|
|
|
|
|
||||||||||||||||||||||||||||||||||||