3W to 50W Planar
Shock / Vibration Proof
High Power Resistors
BPR Series
· Non-Inductive planar package
· High power density.
· Thin package for high density PCB installation.
· Power dissipated above the board.
· RoHS compliant.
· Superior vibration durability
Applications
· Ideal for extreme mechanically stressed environments.
· Power supply pre-load resistors.
· UPS systems
· Snubber and pulse handling circuits.
· Pulse generator load resistors.
· In-rush current protection
· Bleeder Resistors
Specification, Dimensions and Materials
Model
BPR 3
BPR 5
BPR 7
BPR 10
BPR 20
BPR 30
BPR 40
BPR 50
Dim A
0.50
12.70
0.50
12.70
1.00
25.40
1.00
25.40
2.00
50.80
2.10
53.34
2.10
53.34
2.10
53.34
Dim B
0.60
15.24
1.00
25.40
0.75
19.05
1.00
25.40
1.00
25.40
1.40
35.56
1.90
48.26
2.20
55.88
Dim C
0.67
17.02
1.07
27.18
0.82
20.82
1.07
27.18
1.07
27.18
1.47
37.34
1.97
50.04
2.27
57.66
Dim D
0.30
7.62
0.30
7.62
0.80
20.32
0.80
20.32
1.80
45.72
1.90
48.26
1.90
48.26
.040±.005
1.02±0.13
Dim. A ±.005
±0.13
1.90
48.26
BPR
Dim. B ±.005
±0.13
Lead: Tin Plated Copper Alloy
Substrate: 96% Alumina
Resistor: Thick Film
Dim. C ±.020
±0.51
.200±.020
5.08±0.51
.020±.005
0.51±0.13
.040±.005
1.02±0.13
.200±.002
5.08±0.05
Dim. D ±.015
±0.38
Notes:
1. Contact factory for custom products, non-standard values and tolerances.
Items
Power Rating
Specification
3W, 5W, 7W, 10W, 20W, 30W, 40W & 50W,
Operating Voltage Max
300Vac, 500VDC
Resistance Range
0.1Ω to 200 KΩ
Conditions
@ ambient temp < 70°C
TCR
Tolerance
100 ppm/°C
Extended resistance range available.
For -55 to +155°C and above 1Ω
+/-5%, optional 1%, 2%
OperatiingTemp. Range
-55 - +155 °C
Dielectric Withstand Voltage
5KV minimum
Mechanical Shock
ΔR +/- 0.25 %
100G.
Load Life
ΔR +/- 2.0 %
70°C, 90 min. ON, 30 min.OFF, 1000 hours.
Humidity
ΔR +/- 0.5 %
85°C, 85% RH, DC 0.1W, 1000 hours.
Temperature Cycle
ΔR +/- 0.5%
-55°C, 30 min.,+155°C 30min., 5cycles.
Solder Heat (Max)
ΔR +/- 0.25 %
250+/-5°C, 10 seconds,
Min 95% coverage
230+/-5°C, 5 seconds.
Solderability
Insulation Resistance
Over 1000 MΩ
Between terminals and metal back plate.
Vibration
ΔR +/- 0.25 %
20G, 10Hz to 2 KHz.
Specifications subject to change without notice
General Note
TT electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT electronics’ own data and is considered accurate at time of going to print.
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03. 12
