TA025 View Datasheet(PDF) - Ohmite Mfg. Co.
Part Name
Description
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| TA025 Datasheet PDF : 0 Pages | |||
TA Series
Power Chip®
Thick Film on Alumina Substrate
3, 5, 7.5
& 10 watt
H
typical
PC board
0.07"/1.78mm
P
L
10, 25, 50
& 100 watt
0.02" x 0.015" Pins
L
0.17"/4.32mm
0.10"/2.54mm
0.040" / 1.02 mm
H
0.240" /
6.10 mm
0.300" /
7.62 mm
0.020" / 0.51 mm typ.
0.150" / 3.8 mm ref.
P
0.200" / 5.08 mm
0.070" /
1.78 mm
0.040" /
1.02 mm typ.
0.050" / 1.27 mm dia. finished pins
Solder-coated
phosphor bronze
Series
TA203
TA303
TA205
TA305
TA605
TA805
TA207
TA307
TA310
TA810
TA025
TA050
TA100
Wattage
3.0
3.0
5.0
5.0
5.0
5.0
7.5
7.5
10.0
10.0
25.0
50.0
100.0
Dimensions (±.020 in. / ±.508mm)
P
Length L
Height H
0.200 / 5.08 0.50 / 12.70 0.60 / 15.24
0.300 / 7.62 0.50 / 12.70 0.60 / 15.24
0.200 / 5.08 0.50 / 12.70 1.00 / 25.40
0.300 / 7.62 0.50 / 12.70 1.00 / 25.40
0.600 / 15.24 1.00 / 25.40 0.50 / 12.70
0.800 / 20.32 1.00 / 25.40 0.50 / 12.70
0.200 / 5.08 0.75 / 19.05 1.00 / 25.40
0.300 / 7.62 0.75 / 19.05 1.00 / 25.40
0.300 / 7.62 1.00 / 25.40 1.00 / 25.40
0.800 / 20.32 1.00 / 25.40 1.00 / 25.40
1.90 / 48.3 2.220 / 56.39 1.170 / 29.70
1.90 / 48.3 2.220 / 56.39 2.270 / 57.60
4.10 / 104.1 4.420 / 112.27 2.270 / 57.60
Ohmite’s original Power Chip
resistors feature our thick film
on alumina substrate technol-
ogy. These planar packages
yield space saving, 10W/in2
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.
F e at u r e s
• High-Temp Terminal Construction
• Wide Resistance Range
• Low Inductance (50nH-100nH)
• High Power Density
• Easy to install. PC-mountable
S p e c i f i cat i ons
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 100Ω
101Ω and up
100 ppm/°C
50 ppm/°C
Electrical
Tolerance: ±1%, ±5% and ±10%
Power Rating: Based on 25°C
free air
Resistance Range: 0.25 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.
ORDERIN G INFORMATION
Pin spacing
(on 3-10W models only)
2 = .2"
3 = .3"
8 = .8"
Tolerance
K = 10%
J = 5%
F = 1%
RoHS compliant
�� � � � �� � � � � � �
Series
Power Rating: Package:
Resistance Value (Ω)
03 = 3 W
PA = pin terminals, R250 = 0.25
05 = 5
std. for 3-10 W
10R0 = 10.0
07 = 7.5
PW = wraparound, 2K00 = 2,000
10 = 10
std. for 25-100 W 45K0 = 45,000
025 = 25
050 = 50
100 = 100
Check product availability at www.ohmite.com
Standard part numbers for ta series
Part Number
Part Number
Part Number
Part No.
Prefix
Suffix
Part No.
Prefix
Suffix
Part No.
Prefix
Suffix
0.25
1.00
1.50
2.00
4.70
5.00
5.10
7.50
8.20
10.00
11.00
12.00
15.00
20.00
24.00
27.00
33.00
47.00
–––R250J
–––1R00J
–––1R50J
–––2R00J
–––4R70J
–––5R00J
–––5R10J
–––7R50J
–––8R20J
–––10ROJ
–––11R0J
–––12R0J
–––15R0J
–––20R0J
–––24R0J
–––27R0J
–––33R0J
–––47R0J
50.00
62.00
68.00
75.00
100.00
150.00
200.00
250.00
270.00
300.00
470.00
500.00
620.00
680.00
1,000.00
1,500.00
1,800.00
2,000.00
–––50R0J
–––62R0J
–––68R0J
–––75R0J
–––100RJ
–––150RJ
–––200RJ
–––250RJ
–––270RJ
–––300RJ
–––470RJ
–––560
–––620RJ
–––680RJ
–––1K00J
–––1K50J
–––1K80J
–––2K00J
2,500.00 –––2K50J
3,000.00 –––3K00J
4,000.00 –––4K00J
4,700.00 –––4K70J
5,000.00 –––5K00J
5,100.00 –––5K10J
7,500.00 –––7K50J
10,000.00 –––10K0J
15,000.00 –––15K0J
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 standard values, = Stock values, =
Non-standard values subject to minimum handling charge per item
54 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
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