The TAH20 is a completely
encapsulated thick film resistor
in the TO220 package outline.
Rated for 20 watts @ 25°C
case temperature, these resis-
tors are electrically isolated,
and molded in a high tempera-
ture 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 is
very low induction, and avail-
able in a wide range of resis-
tance values in standard 5%
tolerance. 1% tolerance avail-
able by special order.
SPECIFICATIONS
Electrical
Resistance Range:
0.05Ω to
10KΩ, other values available
upon request
Tolerance:
±5% std.
1% Available on request
Temperature Coefficient:
Referenced to 25°C,
ΔR
taken at +105°C;
1 to 10Ω: ±(100ppm+0.002Ω)/°C
10Ω & up: ±50ppm/°C
Max Operating Voltage:
350V
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.
ΔR
±
(0.3% + 0.001Ω) max.
Terminal Material:
Copper
Terminal Plating:
Lead Free
Solder (97% Tin, 3% Silver)
Mounting:
Requires the use of a
snap-on style heat sink. A ther-
mal compound should be prop-
erly applied.
Solder Process:
The TAH20 can-
not exceed 260°C for more than
10 seconds during soldering
process.
TAH Series
20 Watt TO220 Package
Thick Film Power
0.115–0.135"
(2.92–3.44mm)
0.400–0.420"
(10.15–10.67mm)
0.630–0.650"
(16.00–16.52mm)
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 @ R
TH
<6.25°C/W
• Tube Packaging Available
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)
0.016–0.024"
(0.40–0.60mm)
0.190–0.210"
(4.82–5.34mm)
0.060–0.080"
(1.52–2.04mm)
ΔR
= ±(1.0% + 0.001)
Ω
ΔR
= ±(0.3% + 0.001)
Ω
max
ΔR
= ±(0.2% + 0.001)
Ω
max
ΔR
= ±(0.2% + 0.001)
Ω
max
ΔR
= ±(0.5% + 0.01)
Ω
max
T E S T D ATA
MIL-R-39009, 2000 Hours @ Rated Pwr
MIL-R-STD-202, Method 107, Cond. F
MIL-R-STD-202, Method 204, Cond. D
MIL-R-STD-202, Method 211, Cond. A
(Pull Test) 2.4N
Moisture Resistance
MIL-R-STD-202, Method 106
Load Life
Thermal Shock
High Freq Vibration
Terminal Strength
APPLICATIONS
• Frequency Conversion
• High Frequency Balancing
• Snubbers
D E R AT I N G C U R V E
TAH/TCH
100
80
Percent Rated Power
60
TCH
40
20
0
0
25
50
75
100
125
Case Temperature,
°C
150
175
TAH
8/14
4/ 7
0
20/35
16/28
12/21
PULSE-FORM
E-function, time between two pulses: 1 sec.
100,000
10,000
Rated Power, Watts
TCH35
TDH35
TAH20
1,000
Energy (Ws)
100
10
1
0.1
0.01
0.001
0.01
0.1
1
10
Time, ms.
100
1,000
10,000 100,000
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
S TA N D A R D PA RT N U M B E R S
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
TAH20P10R0JE
Series
Ohm Value
Example:
2R40 = 2.4 Ohms
2K40 = 2400 Ohms
RoHS Compliant
Non-compliant
version unavailable
Check product availability at
www.ohmite.com
Our friendly Customer
Service team can be
reached at 866-9-OHMITE
Ohmite Mfg. Co.
1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
55
OHMITE [ OHMITE MFG. CO. ]
