SMM0204

www.vishay.com

Vishay Draloric

Revision: 09-Nov-2021

4

Document Number: 20004

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

DESCRIPTION

Production is strictly controlled and follows an extensive set

of

instructions

established

for

reproducibility.

A

homogeneous film of metal alloy is deposited on a high

desired

temperature

coefficient.

Nickel

plated

steel

termination caps are firmly pressed on the metallized rods.

A special laser is used to achieve the target value by

smoothly cutting a helical groove in the resistive layer

without damaging the ceramic. The resistor elements are

covered by a protective coating designed for electrical,

mechanical and climatic protection. The terminations

receive a final pure matte tin on nickel and copper plating for

enhanced temperature cycling stability. Four or five color

code rings designate the resistance value and tolerance in

The result of the determined production is verified by an

extensive testing procedure performed on 100 % of the

individual resistors. This includes full screening for the

elimination of products with a potential risk of early field

failures (feasible for

R ≥ 10 Ω) according to EN 140401-803,

2.1.2.2. Only accepted products are laid directly into the

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

. 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 completely lead (Pb)-free, the pure matte

tin plating provides compatibility with lead (Pb)-free and

lead

containing

soldering

processes.

Solderability

is

specified for 2 years after production or requalification,

however, excellent solderability is proven after extended

storage in excess of 10 years. 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

• The

Global

Automotive

Declarable

Substance

List

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

supply chain

The products do not contain any of the banned substances

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

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

APPROVALS

The resistors are qualified according to AEC-Q200.

Resistors approved according to EN 140401-803 are

available by using the related ordering code.

RELATED PRODUCTS

MELF resistors of other sizes are available:

Thin Fim Micro-MELF Resistors SMM0102

Thin Fim MELF Resistors SMM0207

Resistors are available with established reliability in

accordance with EN 140401-803 Version E. Please refer to

datasheet “MELF Resistors with Established Reliability”

MS1 .... ESCC high-reliability thin film MINI-MELF resistors

are the premium choice for design and manufacture of

equipment, where matured technology and proven reliability

are of utmost importance. They are regularly used in

communication and research satellites and fit equally well

into aircraft and military electronic systems.

Approval of the MS1 .... ESCC products is granted by the

European Space Components Coordination and registered

in the ESCC Qualified Parts List, REP005.

Notes