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Test Conditions and Standards
CRB, CRC Series
Electrical Characteristics
Item
Standard
Test Conditions
Resistor
Jumper
Resistor
Jumper
DC Resistance
Within Initial Tolerance
50m W max.
Power Contdition A
(20 ° C, 65%RH)
D R/ R = R 2 ? R 1 / R 1 × 1/ T 2 ? T 1 × 10
Temperature
Characteristics
Resistance ( W )
R < 10
10 ≤ R ≤ 1M
1M < R
TCR (ppm/ ° C)
? 100 to + 600
? 250 to + 250
? 500 to + 300
Test Temperature: 25,125 ( ° C)
6
D R/ R: Temp. Coefficient
(ppm/ ° C)
T 1 : 25 ( ° C)
T 2 : 125 ( ° C)
R 1 : T 1 Resistance at ( W )
R 2 : T 2 Resistance at ( W )
Short-time
Overload
D R/ R
± (2.0% + 0.10 W ) max.
of the initial value
50m W max.
(1) Apply 2.5 × rated voltage for
5 sec.
(2) Wait 30 minutes
(3) Measure resistance
(1) 2A for 5 sec.
(2) Wait 30 minutes
(3) Measure
resistance
Visual
No evidence of mechanical damage
intermittent overload
50m W max.
Intermittent
Overload
D R/ R
Visual
± (5% + 0.1 W ) max.
of the initial value
No evidence of mechanical damage
(1) Perform 10000 voltage
cycles as follows:
ON (2.5 × rated voltage) 1 sec.
OFF 25 sec.
(2) Stabilization time 30 min.
without loading
(3) Measure resistance
(1) Perform 10000
current cycles as
follows:
ON (2A) 1 sec.
OFF 25 sec.
(2) Wait 30 minutes
(3) Measure
resistance
Dielectric
Withstanding Voltage
Insulation Resistance
No evidence of mechanical damage
10 8 W min.
Apply 300VAC for 1 sec.
Apply 100V DC.
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