50
Ohmite Mfg. Co.
1600 Golf Rd., Suite 850, Rolling Meadows, IL 60008 • Tel. 1-866-9-OHMITE • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
Ohmite Mfg. Co.
STOCK PART NUMBERS FOR STANDARD RESISTANCE VALUES
ORDERING INFORMATION
TA305PA
Ohmic value
TA203PA
TA303PA
TA205PA
Part Number
TA207PA
TA310PA
TA025PW
TA050PW
TA100PW
TA810PW
Part No.
Prefix
Suffix
TA305PA
Ohmic value
TA203PA
TA303PA
TA205PA
Part Number
TA207PA
TA310PA
TA025PW
TA050PW
TA100PW
TA810PW
Part No.
Prefix
Suffix
TA305PA
Ohmic value
TA203PA
TA303PA
TA205PA
Part Number
TA207PA
TA310PA
TA025PW
TA050PW
TA100PW
TA810PW
Part No.
Prefix
Suffix
TA Series
Power Chip
®
Resistors
Thick Film on Alumina Substrate
Dimensions (in. /
mm
Dimensions (in. / mmDimensions (in. /
)
Series
Wattage
P
Length L
Height H
TA203
TA203
3.0
3.0
0.200 /
0.200 /
5.08
5.08
5.08 5.08
0.50 /
0.50 /
12.70
12.70
0.60 /
0.60 /
15.24
15.24
TA303
3.0
0.300 /
7.62
7.62 7.62
0.50 /
12.70
0.60 /
15.24
TA205
TA205
5.0
5.0
0.200 /
0.200 /
5.08
5.08
5.08 5.08
0.50 /
0.50 /
12.70
12.70
1.00 /
1.00 /
25.40
25.40
TA305
5.0
0.300 /
7.62
7.62 7.62
0.50 /
12.70
1.00 /
25.40
TA605
TA605
5.0
5.0
0.600 /
0.600 /
15.24
15.24
15.24 15.24
1.00 /
1.00 /
25.40
25.40
0.50 /
0.50 /
12.70
12.70
TA805
5.0
0.800 /
20.32
20.32 20.32
1.00 /
25.40
0.50 /
12.70
TA207
TA207
7.5
7.5
0.200 /
0.200 /
5.08
5.08
5.08 5.08
0.75 /
0.75 /
19.05
19.05
1.00 /
1.00 /
25.40
25.40
TA307
7.5
0.300 /
7.62
7.62 7.62
0.75 /
19.05
1.00 /
25.40
TA310
TA310
10.0
10.0
0.300 /
0.300 /
7.62
7.62
7.62 7.62
1.00 /
1.00 /
25.40
25.40
1.00 /
1.00 /
25.40
25.40
TA810
10.0
0.800 /
20.32
20.32 20.32
1.00 /
25.40
1.00 /
25.40
TA025
TA025
25.0
25.0
1.90 /
1.90 /
48.3
48.3
48.3 48.3
2.220 /
2.220 /
56.39
56.39
1.170 /
1.170 /
29.70
29.70
TA050
50.0
1.90 /
48.3
48.3 48.3
2.220 /
56.39
2.270 /
57.60
TA100
TA100
100.0
100.0
4.10 /
4.10 /
104.1
104.1
4.420 /
4.420 /
112.27
2.270 /
2.270 /
57.60
57.60
H
0.020" /
0.51 mm
typ
.
P
L
0.150" /
3.8 mm
ref
.
0.200" /
5.08 mm
0.050" /
1.27 mm dia.
finished pins
0.070"
/
1.78 mm
0.040" /
1.02 mm
0.240"
/
6.10 mm
0.300"
/
7.62 mm
0.040"
/
1.02 mm
typ
.
Solder-coated
phosphor bronz
e
3, 5, 7.5
& 10 watt
25, 50
& 100 watt
P
L
0.07"/1.78mm
H
0.17"/4.32mm
0.
10"/2.54mm
0.10"/2.54mm0.
0.02" x 0.015" Pins
typical
PC board
Ohmite’s original Power Chip
resistors are designed from our
thick film on alumina substrate
technology. These planar pack-
ages yield space saving, 10W/
in
2
power densities that require
over 50% less board space
than other radial packages.
Convection cooling is maxi-
mized by the planar package
configuration which dissipates
heat well above board level.
Ohmite’s power chip resis-
tors have a 125% higher oper-
ating temperature range than
competitive product of similar
design. High temperature
solder and in-process plat-
ing keep terminations secure
under self-heating effects by
preventing re-flow from full
power operation.
Flexible packaging schemes
make these resistors ideal for
power supplies, audio ampli-
fiers, video fly-back, and other
power control applications.
FEATURES
• High-Temp Terminal Construction
• Wide Resistance Range
• Low Inductance (50nH-100nH)
• High Power Density
• Easy to install. PC-mountable
SPECIFICATIONS
Material
Substrate:
Alumina
Resistor:
Thick Film
Coating:
Glass
Terminals:
Solder Plated
Phosphor Bronze
Thermal Conductivity:
20 Watts/Meter/°C
Temperature Coefficient:
1 ohm
450 ppm/°C
1 to 100
Ω
100 ppm/°C
101
Ω
and up
50 ppm/°C
Electrical
Tolerance:
±1% and ±5% (other
tolerances available)
Power Rating:
Based on 25°C
free air
Resistance Range:
0.5 ohm to
10M ohm. Consult factory for
other values
Maximum Operating Voltage:
350 VAC, 500 VDC through
glass, 1000 VAC, 1500 VDC
through substrate
Overload:
Five times rated power,
as long as the one second aver-
age dissipation does not exceed
the wattage rating.
∆
R: ±2%, 2000 hours
Derating:
100% @ 25°C to 0% @ 350°C.
Power Rating:
03 = 3 W
05 = 5
07 = 7.5
10 = 10
025 = 25
050 = 50
100 = 100
Series
Tolerance
K = 10%
J = 5%
F = 1%
Package:
PA = pin terminals,
std. for 3-10 W
PW = wraparound,
std. for 25-100 W
Resistance Value (Ω)
R250 = 0.25
10R0 = 10.0
2K00 = 2,000
45K0 = 45,000
Pin spacing
(on 3-10W models only)
2 = .2"
3 = .3"
8 = .8"
0.25
–––
R250J
1.00
–––
1R00J
1.50
–––
1R50J
2.00
–––
2R00J
4.70
–––
4R70J
5.00
–––
5R00J
5.10
–––
5R10J
7.50
–––
7R50J
8.20
–––
8R20J
10.00
–––
10ROJ
11.00
–––
11R0J
12.00
–––
12R0J
15.00
–––
15R0J
20.00
–––
20R0J
24.00
–––
24R0J
27.00
–––
27R0J
33.00
–––
33R0J
47.00
–––
47R0J
50.00
–––
50R0J
62.00
–––
62R0J
68.00
–––
68R0J
75.00
–––
75R0J
100.00
–––
100RJ
150.00
–––
150RJ
200.00
–––
200RJ
250.00
–––
250RJ
270.00
–––
270RJ
300.00
–––
300RJ
470.00
–––
470RJ
500.00
–––
560
620.00
–––
620RJ
680.00
–––
680RJ
1,000.00
–––
1K00J
1,500.00
–––
1K50J
1,800.00
–––
1K80J
2,000.00
–––
2K00J
2,500.00
–––
2K50J
3,000.00
–––
3K00J
4,000.00
–––
4K00J
4,700.00
–––
4K70J
5,000.00
5,000.00
–––
5K00J
5,100.00
–––
5K10J
7,500.00
–––
7K50J
10,000.00
–––
10K0J
15,000.00
–––
15K0J
18,000.00
18,000.00
–––
18K0J
20,000.00
–––
20K0J
30,000.00
–––
30K0J
39,000.00
–––
39K0J
50,000.00
–––
50K0J
75,000.00
–––75K0J
100,000
–––
100KJ
150,000
–––
150KJ
200,000
–––
200KJ
=
Most popular stock values,
=
Stock values,
=
Non-stock values subject to minimum handling charge per item
