Artikelnummer / part number :

Bezeichnung :

description :

DIAM:

20

MM

BASIC TEST AND ENVIRONMENTAL RELIABILITY TEST

Freigabe erteilt /

Kunde / customer

general release:

Datum / date

Unterschrift / signature

JP Penlou

New P/N

2006-06-01

Würth Elektronik

JP Penlou

Customer Layout

2006-05-11

JP Penlou

Factory codes

2005-11-16

JP Penlou

Lead Free Marking

2004-10-19

Geprüft / checked

2006-06-01 Kontrolliert / approved

JP. Penlou

Name

Änderung / modification

Datum / date

Spezifikation für Freigabe / specification for release

http://www.we-online.com

D-74638 Waldenburg · Max-Eyth-Straße 1 - 3 · Germany · Telefon (+49) (0) 7942 - 945 - 0 · Telefax (+49) (0) 7942 - 945 - 400

Würth Elektronik eiSos GmbH & Co.KG - Radialex department

Kunde / customer :

STANDARD VARISTOR DISC

820 526 811

Humidity

The specimen shall be subjected to 40+/-2°C, 90 to 95% R.H.

For 1000 hours without load and then stored at room

temperature and normal humidity for 1 to 2 hours. Thereafter,

the change of Vn shall be measured and meet the requirement

of:

∆ Vn/Vn≤ ± 5%.

Impulse life

The impulse current listed on catalog is applied 1000 times

continuously with the interval of 30 seconds at room

temperature. The change of Vn shall be measured

∆ Vn/Vn≤ ± 10%

Low temperature

The specimen shall be subjected to 40 ±2°C without load for

1000 hours and then stored at room temperature and normal

humidity for 1 to 2 hours. Thereafter, the change of Vn shall be

measured and meet the requirement of ∆ Vn/Vn ≤± 5%.

High temperature load

After being continuously applied the maximum allowable

Voltage at 85 ±2°C for 1000 hours, the specimen shall be

stored at room temperature and humidity for 1 to 2 hours. The

change of Vn shall be measured and meet the requirement of

Vn/Vn ≤± 10%.

High temperature storage

The specimen shall be subjected to 125 ±1°C for 1000 hours. In

a drying oven without load stored at room temperature and

humidity for 1 to 2 hours. The change of Vn shall be measured

and meet the requirement of ∆ Vn/Vn ≤± 5%.

Withstanding Voltage

The specified voltage shall be applied between both terminals

of the specimen connected together for 1 minute, with no

remarkable mechanical damage.

Withstanding Voltage (Body Insulation)

Classification (Nom. varistor voltage)

Test Voltage (AC)

1 000 Vrms

1 500 Vrms

Terminal pull strength

After gradually applying the load specified below and keeping

the unit fixed for 10 ±1 seconds, with no remarkable mechanical

damage.

Terminal diameter

Loading weight in pull strength

0.6mm (0.024”)

10N (1.02Kg)

0.8 mm (0.031”)

10N (1.02Kg)

1.0 mm (0.039”)

20N (2.04Kg)

Terminal bending strength

The unit shall be secured with its terminal kept vertical and the

weight specified above shall be applied in the axial direction.

The terminal shall gradually be bent 90° in one direction, then

90° in the opposite direction, and again back to the original

position. A bend of lead wire shall be repeated 2 times, with no

remarkable mechanical damage.

Loading weight in bending strength

5N (0.51Kg)

5N (0.51Kg)

10N (1.02Kg)

Vibration

Subjected to simple harmonic motion of 0.75 mm amplitude 1.5

mm maximum total excursion between limits of 10-55 Hz.

Frequency scan shall be traversed in one minute. This motion

shall then be applied for period of 2 hours in each of three

mutually perpendicular directions, with no remarkable

mechanical damage.

Solderability

After dipping the terminal to a depth of approximately 3mm from

the body in a soldering bath of 235 ±5°C for 2 ±0.5 seconds, the

terminal shall be visually examined. Approximately 95% of the

terminals shall be covered with new solder uniformly.

Resistance to soldering heat

The terminal shall be dipped into a soldering bath with

temperature of 260 ±5°C to a point of 2~2.5 mm from the body

of the unit, be held there for 10 ±1 sec (5N series: 5 ±1 sec) and

then be stored at room temperature and humidity for 1 to 2

hours. The change of Vn shall be measured and meet the

requirement of ∆ Vn/Vn ≤ ± 5% with no remarkable mechanical

damage.

Damp heat load

The specimen shall be subjected to 40 ±2°C, 90 to 95% R.H.

and the maximum allowable voltage for 100 hours and then

stored at room temperature and normally humidity for 1 to 2

hours. The change of Vn shall be measured and meet the

requirement of

∆ Vn/Vn ≤ ± 10%.

Temperature cycle

The temperature cycle is repeated fives cycles with

(1)-40 ±3°C keeping 30 ±3 minutes then (2) room temperature

keeping 15 ±3 minutes then (3)125 ±2°C keeping 30 ±3 minutes

then (4) room temperature keeping 15 ±3 minutes and then

stored at room temperature and humidity for 1 to 2 hours. The

change of Vn shall be measured and meet requirement

∆ Vn/Vn ≤ ± 5% with no remarkable mechanical damage.

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