TAH Series
20 Watt TO220 Package Thick Film Power
The TAH20 is a completely encapsulated thick film resistor in the TO220 package outline. Rated for 20 watts @ 25°C case temperature, these resistors are electrically isolated, and molded in a high temperature case.
Designed for heat sink mounting, the symmetrical package is ready for use with snap-on style heat sinks (we recommend use of thermal grease). The TAH20 Series has very low inductance, and is available in a wide range of resistance values in standard 5% tolerance. 1% tolerance is available by special order.
TEST DATA
| Load Life | MIL-R-39009, 2000 Hours @ Rated Pwr | delta-R = ± (1.0% + 0.001) ohm |
| Thermal Shock | MIL-R-STD-202, Method 107, Cond. F | delta-R = ± (0.3% + 0.001) ohm max |
| High Frequency Vibration | MIL-R-STD-202, Method 204, Cond. D | delta-R = ± (0.2% + 0.001) ohm max |
| Terminal Strength | MIL-R-STD-202, Method 211, Cond. A (Pull Test) 2.4N | delta-R = ± (0.2% + 0.001) ohm max |
| Moisture Resistance | MIL-R-STD-202, Method 106 | delta-RDR = ± (0.5% + 0.01) ohm max |
FEATURES
- 20 Watt Power Rating at 25°C Case Temperature
- High Pulse Tolerant Design
- Quick-snap Molded Package
- Very Low Inductance Design
- Resistor Package Electrically Isolated from Heat Sink
- Low Thermal Resistance to Heat Sink @ RTH<6.25°C/W
- Tube Packaging Available
APPLICATIONS
- Frequency Conversion
- High Frequency Balancing
- Snubbers
SPECIFICATIONS
Electrical
- Resistance Range: 0.05 ohm to 10K ohm, other values available upon request
- Tolerance: <0.1Ω: 5% only
0.1Ω-1MΩ: 5% std.; 1% available
- Temperature Coefficient: Referenced to 25°C, delta-R taken at +105°C
1 to 10ohm ±(100ppm+0.002 ohm)/°C
10 ohm & up ±50ppm/°C
- Max Operating Voltage: 350V
- Dielectric Strength: 1,800 VAC
- Power Rating: 20W @ 25°C Case Temperature. See derating curve
- Insulation Resistance: 10G ohm min.
- Momentary Overload: 2x rated power for 5 seconds where applied voltage </=1.5 times max. operating voltage. delta-R ±(0.3% + 0.001 ohm) max.
- Case Material: KMC-125 epoxy
- Terminal Material: Copper
- Terminal Plating: Lead Free Solder (97% Tin, 3% Silver)
- Mounting: Requires the use of a snap-on style heat sink. A thermal compound should be properly applied.
- Solder Process: The TAH20 cannot exceed 260°C for more than 10 seconds during soldering process.
DERATING CURVE
HOW TO ORDER
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