Wirewound Anti-Surge Resistor

Type EP Series

9-1773463-6 CIS WR 03/2012

Dimensions are in millimeters

Dimensions are shown for

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and inches unless otherwise

reference purposes only.

specified. Values in brackets

Specifications subject

are standard equivalents.

to change.

Characteristics – Environmental

Item

Limits

TestMethod

(JISC5201-1)

TemperatureCoefficient

<20Ω : ±400PPM/°C

R2-R1

ofResistance(TCR):

≥20Ω : ±300PPM/°C

R1 (t2-t1) x106 (PPM/°C)

ShortTimeOverload:

± (2% + 0.05Ω) Max

RCWV*2.5 for 5 seconds

LoadLife:

±(5.0%+0.05Ω)

70±2°C Max. working voltage for 1000 hrs

with 1.5 hrs “ON” and 0.5 hrs “OFF”

40±2°C, 90-95% R.H. Max working voltage

LoadLifeinHumidity:

±(5.0%+0.05Ω)

for 1000 hrs with 1.5hrs hrs “ON”

and 0.5 hrs “OFF”

Solderability:

95% min. coverage

245±5°C for 3 seconds

ResistancetoSolderingHeat:

±(1.0%+0.05Ω)

Leads immersed 3.2 – 4.8 mm

from body - 350±10°C for 3±0.05 seconds

ResistancetoSolvent:

No deterioration of

Immersed in trichroethane bath

protective coating and markings

for 3 minutes with ultrasonic

SurgeImmunityTest:

±(5% + 0.05Ω) Max.

Refer to

Max Surge

IEC61000-4-5

Voltage

1/2W

4KV

1WS

1W

5KV

2WS

2W

6KV

3WS

3W

8KV

5WS

5W

9KV

7WS

7W

10KV

8WS

8W

11KV

9WS

9W

12KV

10WS

StorageTemperature:25±3°C;Humidity60%RH±10%

Marking

For EP Normal Size 1/2W, 1W, 2W, 3W and EP Small Size 1WS, 2WS, 3WS, 5WS Resistors shall be marked with

color coding in accordance with JIS C 0802.

For EP Normal Size 5W, 7W, 8W 9W and EP Small Size 7WS, 8WS, 9WS, 10WS Resistors will be marked with

power rating, nominal resistance and resistance tolerance code.

1stsignificantfigure

2ndsignificantfigure

Multiplier

Tolerence

YellowcolorcodeforAnti-Surge

9W100 ΩJ

13

2

1.2 μsec rising time and 50 μsec discharge;

every 1 minute for 10 cycle