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SS-217 R2

6-2 Voltage Rating

Resistors shall have a rated direct-current (DC)

continuous working voltage or approximate

sine-wave root-mean-square (R.M.S.) continuous

working voltage at commercial-line frequency and

wave-form corresponding the power rating as

determined from the following formula:

Where: E: Rated Voltage (V)

E=

P: Power Rating (W)

R: Nominal Resistance (Ω)

However, if the rated voltage thus obtained surpasses the

specified maximum working voltage, it shall be considered

the rated voltage.

6. Environmental Applications

For temperature in excess of 70°C, the load shall be derated

in accordance with the following figure.

KOA SPEER ELECTRONICS, INC.

Specifications given herein may be changed at any time without pr ior notice. P lease confir m technical specifications before you order and/or use.

Derating Curve

Surface Temperature Rise

100

80

60

40

20

20

40

60

80

100

120

140

160

125

70

Ambient Temperature

(

°C)

0

0

60

50

40

30

20

1/32

1/16

1/10

1/8

(W) Power

0

0

10

CNB2B9Z

CND2A10Y

CND2B10

7. Body Color and Marking

Body Color:

Black

Marking Color: White

10 3

103

Nominal resistance at 3-digit numbers

3-digit numbers

The first and the second numbers show

2 effective numbers, the third number shows

a multiple of 10.

Example:

103

10,000Ω

10kΩ

472

4,700Ω

4.7kΩ

* RCWV = Rated Continuous Working Voltage.

8. Performance

Parameter

Thermal Shock

MIL-STD-202, Method 107, -55°C to +125°C, 5 cycles

±(1.0% + 0.1Ω)

Low Temperature Operation

MIL-R-55342 π 4.7.4, 1 hour @ -55°C followed by 45 minutes of RCWV*

High Temperature Exposure

MIL-R-55342 π 4.7.6, 100 hours @ 125°C

Short Time Overload

MIL-R-55342 π 4.7.5, 2.5 x RCWV for 5 seconds

±(2.0% + 0.05Ω)

Resistance to Solder Heat

MIL-R-55342 π 4.7.7, 260°C for 10 seconds

1.2 Kg for 1 minute

±(1.0% + 0.1Ω)

±(0.5% + 0.05Ω)

Terminal Strength-Push

Terminal Strength-Bend

5mm deflection in either direction for 10 seconds

Moisture Resistance

MIL-STD-202, Method 103, 40°C, 90 - 95% RH, 1000 hours

±5.0%

±1.0%

Life

Dielectric Withstanding Voltage

Pulse

Temperature Cycling

MIL-STD-202, Method 108, 70°C, 1000 hours @ RCWV, 1.5 hr ON, 0.5 hr OFF

2.5 x RCWV, not exceeding max. overload voltage, 1 sec. ON, 25 sec. OFF, 10,000 cycles

30 min. @ -55°C, 15 min. @ +25°C, 30 min. @ +125°C, 15 min. @ +25°C, 5 cycles

15 Grams Minimum

Terminal Adhesion

Axial pull, one terminal at a time

—

1 minute minimum, MIL-STD-202, Method 301

400V

Insulation Resistance

1,000 MΩ Minimum

Maximum Δ R

Test Method

SS-217 R2

6/4/07

1:29 PM

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