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DQS - Application Notes

Specifications

Test Item

Test Methods

Characterstics

Resistance tolerance

JIS-C-5202 5-1

Resistance

Nominal

Tolerance

1≤R

1>R

±5%(J) ±10%(K)

Temperature coefficient JIS-C-5202 5-2

±200PPM/°C MAX

Load rating

JIS-C-5202 5-4

ΔR/R≤±(0.5%+0.1Ω) Surface temperature

up 350°C MAX

Short-term overload

JIS-C-5202 5-5

1000% rated wattage 5 seconds

Free of appearance or structural irregularity

ΔR/R≤ ±(2%+0.1Ω)

Insulation resistance

JIS-C-5202 5-6 500VDC

100MΩ min

Dielectric withstanding

voltage

JIS-C-5202 5-7

1000VDC 1 minute Between terminal and

anchor stand

Free of appearance or structural irregularity

ΔR/R≤ ±(0.1%+0.05Ω)

Terminal strength

JIS-C-5202 6-1 8kg 30 seconds

Free of appearance or structural irregularity

Vibration

JIS-C-5202 6-3

1.5m/m 10 ~ 50 ~ 10 Hz/min X-Y-Z

2 hours each

Free of appearance or structural irregularity

Surface coating crack ΔR/R≤ ±(1%+0.05Ω)

Thermal shock

JIS-C-5202 7-3

Room temp 30 minutes ON-55°C

15 minutes OFF

Free of structural irregularity

ΔR/R≤ ±(2%+0.1Ω)

Humidity

JIS-C-5202 7-5

40°C 90%RH 240 hours

Free of appearance or structural irregularity

Surface coating crack ΔR/R≤ ±(3%+0.1Ω)

Load life

JIS-C-5202 7-10

90 minutes ON - 30 minutes OFF 500 hours

Free of appearance or structural irregularity

Surface coating crack ΔR/R≤ ±(1%+0.05Ω)

Flame retardation

JIS-C-5202 7-13-3-2

100% - 600% rated wattage load

US UL-94 flame retardation test V-0 grade

noncombustible

REMARKS:

1. Resistance and resistance tolerance were tested in-house with micro resistance meter.

2. Coating refers to UL-certified data provided by supplier.

Determination of End Resistance Value of FVR, DQS, DSRA, DSRB, BSR, BSQ:

● Resistance Range means you can choose one maximum resistance value (End resistance value)

at one of FVR, DQS, DSRA, DSRB, BSR, BSQ VR (Variable Resistor) type.

● After End Resistance Value confirmed, the minimum resistance (start resistance value) will be

determined by depending on resistance of wire and wirewound type.

Power Rating of Variable Resistor:

The part Nunber formation of FVR, DQS, DSRA, DSRB, BSR, BSQ:

Product type

Rated Wattage

Resistance Value (Ω)

Resistance Tolerance

-

-

-

Version 2010

DRS Power Adjustable Resistors

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