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 elec-
trically 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 available in a wide range of resis-
tance values in standard 5% tolerance.
1% tolerance available by special order.
F e at u r e s
a p p l i c at i o n s
• 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
• Frequency Conversion
• High Frequency Balancing
• Snubbers
characteristics
Resistance Range
0.05Ω to 10KΩ, other values available upon
request
Tolerance
<0.1Ω: 5% only
0.1Ω-1MΩ: 5% std.; 1% available
Temperature
Referenced to 25°C, ∆R taken at +105°C;
Coefficient
1 to 10Ω: ±(100ppm+0.002Ω)/°C
10Ω & up: ±50ppm/°C
Max Operating
350V
Voltage
Dielectric Strength
1,800 VAC
Power Rating
20W @ 25°C case temperature; see derating
curve, below
Insulation Resistance
10GΩ min.
Momentary Overload
2x rated power for 5 seconds where applied
voltage ≤1.5 times max. operating voltage.
∆R ±(0.3% + 0.001Ω) 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.
Load Life
MIL-R-39009, 2000 Hours
@ Rated Pwr
Thermal Shock
MIL-R-STD-202, Method
107, Cond. F
High Freq
MIL-R-STD-202, Method
Vibration
204, Cond. D
Terminal Strength
MIL-R-STD-202, Method
211, Cond. A (Pull Test)
2.4N
Moisture
MIL-R-STD-202, Method
Resistance
106
∆R = ±(1.0%
+ 0.001) Ω
∆R = ±(0.3%
+ 0.001) Ω max
∆R = ±(0.2%
+ 0.001) Ω max
∆R = ±(0.2%
+ 0.001) Ω max
∆R = ±(0.5%
+ 0.01) Ω max
Derating
TAH/TCH
100
80
Percent Rated Power
60
TCH
40
20
0
0
25
50
75
100
125
Bottom of base plate Temperature,
°C
150
175
TAH
8/14
4/ 7
0
20/35
16/28
12/21
(continued)
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145
Rated Power, Watts
tah series
20 Watt TO220 Package
Thick Film Power
dimensions
(iin./mm)
0.400–0.420"
(10.15–10.67mm)
0.115–0.135"
(2.92–3.44mm)
0.630–0.650"
(16.00–16.52mm)
0.450–0.550"
(11.43–13.97mm)
0.100–0.160"
(2.54–4.06mm)
0.045–0.055"
(1.14–1.40mm)
0.026–0.034"
(0.66–0.86mm)
0.190–0.210"
(4.82–5.34mm)
0.016–0.024"
(0.40–0.60mm)
0.060–0.080"
(1.52–2.04mm)
o r d e r i n g i n F o r m at i o n
Package Code
Tolerance
F = 1%
J = 5% Standard
TAH20P10R0JE
Series
Ohm Value
Example:
2R40 = 2.4 Ohms
2K40 = 2400 Ohms
RoHS Compliant
Non-compliant
version unavailable
Standard Part Numbers
TAH20P100RJE
TAH20P10K0JE
TAH20P10R0JE
TAH20P150RJE
TAH20P15R0JE
TAH20P1K00JE
TAH20P1K50JE
TAH20P1R00JE
TAH20P1R50JE
TAH20P200RJE
TAH20P20R0JE
TAH20P220RJE
TAH20P22R0JE
TAH20P240RJE
TAH20P24R0JE
TAH20P2K00JE
TAH20P2K20JE
TAH20P2K40JE
TAH20P2R00JE
TAH20P2R20JE
TAH20P2R40JE
TAH20P330RJE
TAH20P33R0JE
TAH20P390RJE
TAH20P39R0JE
TAH20P3K30JE
TAH20P3K90JE
TAH20P3R30JE
TAH20P3R90JE
TAH20P470RJE
TAH20P47R0JE
TAH20P4K70JE
TAH20P4R70JE
TAH20P510RJE
TAH20P51R0JE
TAH20P5K10JE
TAH20P5R10JE
TAH20P750RJE
TAH20P75R0JE
TAH20P7K50JE
TAH20P7R50JE
TAH20PR050JE
TAH20PR100JE
TAH20PR150JE
TAH20PR200JE
TAH20PR220JE
TAH20PR240JE
TAH20PR330JE
TAH20PR390JE
TAH20PR470JE
TAH20PR510JE
TAH20PR750JE
THIS PRODUCT IS DESIGNED FOR USE WITH PROPER HEATSINKING.
Maximum base plate temperature of the resistor must be monitored and kept within specified limits to establish the
power rating. Best technique is to attach a thermocouple to the side of the base plate of the resistor. Temperature of
plastic housing or heat sink cannot be used to establish rating of the resistor.
146
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PCB Design
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