PSB Series
Alpha Electronics
Ultra Precision Shunt Resistor (40 Watts)
FEATURES
PSB
• Excellent temperature characteristics created by Bulk Metal
®
foil technology
• Accurate value on four-terminal wiring, even in low extremity of resistance
• High heat dissipation due to aluminum-clad construction with fins
• Readiness to mount to heat sink or water-cooled radiator
• Availability of threaded holes to fix cables with screw
Caution
Please screw current terminals
>5N
⋅
m, voltage terminal >1N
⋅
m
APPLICATIONS
• Current-sensing in precise power supply, motor driver, etc.
COMPOSITION OF TYPE NUMBER
TCR, RESISTANCE RANGE, TOLERANCE,
RATED POWER
TCR (ppm/°C)
0°C to +60°C
0±15 (W)
0±5 (X)
0±15 (W)
Resistance
Range
(Ω)
0.001 to 0.005
0.005 to 1
Resistance
Tolerance
(%)
±0.1 (B)
±0.5 (D)
±1 (F)
Rated Power
(W)
at 25°C
12
in free air
and
40
On heat sink*
PSB X R0100 B
Resistance value in ohm is expressed by a series of four
significant digits and an R designating the decimal point.
*Thermal resistance of the heat sink 1°C/W.
Available to use higher rated power with elevation of cooling effect.
Please keep temperature of element surface less than 60°C.
POWER DERATING CURVE
CONFIGURATION
(DIMENSIONS IN mm)
100
6
88
6
6
2
8
60
48
16
16
2-M6
6
EXAMPLE OF APPLICATIONS
60
20
2-M3
Motor Control Circuit Using Shunt Resistor
1V
dd
V
IN
1
2
2V
ee
6
5
4 10
Current Buffer
C.B.
i
M
Shunt Resistor
R
20
Schematic of PSB Type
V
V
4-Terminal Connection
I
I
Weight =170g
I=
V
IN
R
www.alpha-elec.co.jp
22
For technical questions, contact
sales-alpha@alpha-elec.co.jp
Document No.: 67010
Revision: 29-Oct-2013
PSB Series
Alpha Electronics
Ultra Precision Shunt Resistor (40 Watts)
PERFORMANCE
Parameters
Maximum Rated Operating Temperature
Working Temperature Range
Maximum Working Current
Power Conditioning
25°C, Rated Power, 96 hrs.
Test Condition
ALPHA
Specification
ALPHA Typical
Test Data
25°C
–55°C to +85°C
100A
±0.1%
±0.1%
±0.05%
±0.05%
Low Temperature Storage and Operation
–55°C, No Load, 24 hrs.
Dielectric Withstanding Voltage
Insulation Resistance
Low Temperature Operation
Overload
Moisture Resistance
Shock
High Frequency Shock
Life
High Temperature Exposure
Storage Life
Internal Thermal Resistance
Thermal Electromotive Force
Atmo. Pres.: AC 750V, 1 min.
DC 500V, 2 min.
–55°C, Rated Power
Rated Power x 2.5, 5 sec.
+65°C to –10°C, 90% RH to 98% RH, Rated Voltage, 10 cycles (240 hrs.)
30G, 11 ms., Half-Sine Wave, X, Y, Z, 10 shocks each
10 Hz to 50 Hz to 10 Hz, 1 min. X, Y, Z, 2.0 hrs. each
25°C, Rated Power, 1.5 hrs. – ON, 0.5 hrs. – OFF, 2,000 hrs.
85°C, No Load, 2,000 hrs.
15°C to 35°C, 15% RH to 75% RH, No Load, 10,000 hrs.
Between resistive element and base plate
±0.05%
±0.01%
over 10,000 MΩ over 10,000 MΩ
±0.1%
±0.05%
±0.1%
±0.05%
±0.1%
±0.05%
±0.05%
±0.2%
±0.2%
±0.05%
0.3°C/W
1 µV/°C
±0.05%
±0.1%
±0.1%
±0.05%
±0.05%
±0.01%
FREQUENCY CHARACTERISTICS
(%)
3
2
1
R(AC)/R(DC)
0
-1
-2
-3
100 m
1
10 m
TEMPERATURE OF RESISTOR SURFACE
A: Element’s Surface
Screwed Down
B: Bottom of Resistor
Aluminum Heat Sink
T (°C)
70
60
In Free Air
A (4.7°C/W)
B (4.4°C/W)
100 mm (L) x 60 mm (W) x 60 mm (H)
A (1.5°C/W)
B (1.2°C/W)
Temperature Rise
50
40
30
20
10
On Heat Sink
(Rth 1°C/W)
0.1
1
Frequency
10
100
(kHz)
5
10
15
20
25
Applied Power
30
30
40 (W)
Document No.: 67010
Revision: 29-Oct-2013
For technical questions, contact
sales-alpha@alpha-elec.co.jp
www.alpha-elec.co.jp
23
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