7D301K datasheet(5/65 Pages) WPI

5 / 65 page

Metal Oxide VaristOrs

WORLD PRODUCTS INC. 19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com

Rev. 9.9

Metal Oxide Varistors | 3

General Characteristics

Storage Temperature

- 55° C to + 125° C

Operating Surface Temperature

125° C

Operating Ambient Temperature

- 55° C to + 85° C (without derating)

Maximum Voltage-Temperature

Coefficient

< -0 .01 % / °C

Insulation Resistance

1000 Megohm min .

Hi POT (Leads to Case, 1 min.)

2500 VDC (Phenolic coating 500 VDC and 2000 VDC ratings)

Typical Response Time

< 15 nsec .

Epoxy Rating

94 V-0

Current/Energy Derating (>85°C)

- 2 .5 % / °C

DC Leakage Current

200µA Max (at rated DC working voltage)

Solderability

MIL STD 202G, Method 208H

Failure Criteria

Voltage change ± 10% from initially measured Varistor Voltage . When

determining if varistor is within aforementioned criteria the same temperature

must be observed as was used for initial Varistor Voltage measurements .

Part Marking

Example: 20E241K-VB

241

K - N B

–– –– ––– ––

–– ––

(1)

(2)

(3)

(4)

(5) (6)

(1) Disk Diameter

5 = 5mm, 7 = 7mm, 10 = 10mm,

14 = 14mm, 18 = 18mm, 20 = 20mm,

25 = 25mm, 32 = 32mm, 34 = 34mm,

40 = 40mm, 53 = 53mm

(2) Type

D = Standard

E = High Energy

R = (applicable only for 34mm Types)

(3) Varistor Voltage

241 = 24 x 101 = 240

(4) Tolerance

J = ±5%, K = ±10%, M = ±20%

(5) N = RoHs Compliant Series (as of October 2007 forward, per Date Code)

(6) B = Phenolic coating rated at 500 VDC . Phenolic coating rated at 2000 VDC requires no marking .

Date Code

037 = First digit represents year (0 = 2010) . Second and third digits represent the week of the year.

This new date code system was implemented from 9/15/05 .

NOTE: Parts will be marked SINCERA . (This is the brand name .)

SINCERA

40D511K-N

J=5%, K=10%

C=Halogen Free Coating

RoHS

Compliant -N

(as of October 2007)

Phenolic Coating

Rated at 500 VDC

SINCERA

20E241K-NB

037

5mm – 32mm (Wire Lead)

32mm – 53mm

Date Code

Factory Identiﬁer

depicted with black

dot(s) in this position.

SINCERA

40D511K-N

037

There are two options for placement

of date code for 32mm - 53mm.

J=5%, K=10%

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