20E241K-NB Datasheet, PDF (5/65 Pages) World Produts Inc. – Metal Oxide Varistors

Metal Oxide Varistors
General Characteristics
Storage Temperature
Operating Surface Temperature
Operating Ambient Temperature
Maximum Voltage-Temperature
Coefficient
Insulation Resistance
Hi POT (Leads to Case, 1 min.)
Typical Response Time
Epoxy Rating
Current/Energy Derating (>85°C)
DC Leakage Current
Solderability
Failure Criteria
- 55° C to + 125° C
125° C
- 55° C to + 85° C (without derating)
< -0.01 % / °C
1000 Megohm min.
2500 VDC (Phenolic coating 500 VDC and 2000 VDC ratings)
< 15 nsec.
94 V-0
- 2.5 % / °C
200µA Max (at rated DC working voltage)
MIL STD 202G, Method 208H
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
20 E 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)
5mm – 32mm (Wire Lead)
SINCERA
J=5%, K=10% 20E241K-NB
C037
Factory Identifier
depicted with black
dot(s) in this position.
RoHS
Compliant -N
(as of October 2007)
Phenolic Coating
Rated at 500 VDC
Date Code
C=Halogen Free Coating
32mm – 53mm
SINCERA
40D511K-N
037
SINCERA
40D511K-N
037
(3) Varistor Voltage
241 = 24 x 10¹ = 240
(4) Tolerance
J = ±5%, K = ±10%, M = ±20%
J=5%, K=10%
There are two options for placement
of date code for 32mm - 53mm.
(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.)
WORLD PRODUCTS INC. 19654 Eighth Street East, Sonoma, CA 95476 | Phone [phone] | Fax [phone] | www.worldproducts.com
Rev. 9.9
Metal Oxide Varistors | 3