D/CRCW e3

www.vishay.com

Vishay

Revision: 05-Aug-2022

4

Document Number: 20035

For technical questions, contact: thickfilmchip@vishay.com

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

DESCRIPTION

Production is strictly controlled and follows an extensive set

of instructions established for reproducibility. A cermet film

layer and a glass-over are deposited on a high grade (Al2O3)

ceramic substrate with its prepared inner contacts. A

special laser is used to achieve the target value by smoothly

fine trimming the resistive layer without damaging the

ceramics. The resistor elements are covered by a protective

coating designed for electrical, mechanical and climatic

protection. The terminations receive a final pure tin on nickel

plating.

The result of the determined production is verified by an

extensive testing procedure on 100 % of the individual chip

resistors. Only accepted products are laid directly into

the tape in accordance with IEC 60286-3 Type 1a and

Type 2a (1)

.

ASSEMBLY

The resistors are suitable for processing on automatic SMD

assembly systems. They are suitable for automatic

soldering using wave, reflow or vapor phase as shown in

IEC 61760-1 (1)

. The encapsulation is resistant to all

cleaning solvents commonly used in the electronics

industry, including alcohols, esters and aqueous solutions.

The suitability of conformal coatings, potting compounds

and their processes, if applied, shall be qualified by

appropriate means to ensure the long-term stability of the

whole system.

The resistors are RoHS-compliant, the pure tin plating

provides

compatibility

with

lead

(Pb)-free

and

lead-containing

soldering

processes.

Solderability

is

specified for 2 years after production or requalification. The

permitted storage time is 20 years. The immunity of the

plating against tin whisker growth has been proven under

extensive testing.

MATERIALS

Vishay acknowledges the following systems for the

regulation of hazardous substances:

• IEC 62474, Material Declaration for Products of and for the

Electrotechnical Industry, with the list of declarable

substances given therein (2)

• The

Global

Automotive

Declarable

Substance

List

(GADSL) (3)

• The REACH regulation (1907/2006/EC) and the related list

of substances with very high concern (SVHC) (4) for its

supply chain

The

products

do

not

contain

any

of

the

banned

substances as per IEC 62474, GADSL, or the SVHC list,

see www.vishay.com/how/leadfree.

Hence the products fully comply with the following

directives:

• 2000/53/EC End-of-Life Vehicle Directive (ELV) and

Annex II (ELV II)

• 2011/65/EU

Restriction

of

the

Use

of

Hazardous

Substances

Directive

(RoHS)

with

amendment

2015/863/EU

• 2012/19/EU Waste Electrical and Electronic Equipment

Directive (WEEE)

Vishay pursues the elimination of conflict minerals from its

supply

chain,

see

the

Conflict

Minerals

Policy

at

www.vishay.com/doc?49037.

APPROVALS

The resistors are qualified according to AEC-Q200.

Where applicable, the resistors are tested in accordance

with

EN 140401-802

which

refers

to

EN 60115-1,

EN 60115-8

and

the

variety

of

environmental

test

procedures of the IEC 60068 (1) series.

RELATED PRODUCTS

For more information about products with better TCR and

tighter tolerance please refer to the “Lead (Pb)-Free Thick

Film,

Rectangular,

Semi-Precision

Chip

Resistors”

datasheet (www.vishay.com/doc?20036).

The D/CRCW with SnPb termination plating is designed for

applications

where

lead

bearing

terminations

are

mandatory. For ordering D/CRCW with SnPb terminations

please refer to latest edition of datasheet D/CRCW

(www.vishay.com/doc?20008).

Notes

(1) The quoted IEC standards are also released as EN standards with the same number and identical contents

(2) The IEC 62474 list of declarable substances is maintained in a dedicated database, which is available at http://std.iec.ch/iec62474

(3) The Global Automotive Declarable Substance List (GADSL) is maintained by the American Chemistry Council and available at www.gadsl.org

(4) The SVHC list is maintained by the European Chemical Agency (ECHA) and available at http://echa.europa.eu/candidate-list-table