Document Number: 28751

For technical questions, contact: filmresistors.thinfilmarray@vishay.com

www.vishay.com

Revision: 11-Sep-08

279

ACAC 0612, ACAS 0612 - Precision

Precision Thin Film Chip Resistor Array

Vishay Beyschlag

APPLICATION INFORMATION

DESCRIPTION

The production of the components is strictly controlled and

follows an extensive set of instructions established for

reproducibility. A homogeneous film of metal alloy is

and conditioned to achieve the desired temperature

coefficient. Specially designed inner contacts are realised on

both sides. A special laser is used to achieve the target value

by smoothly cutting a meander groove in 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

and

optical

inspection

performed on 100 % of the individual chip resistors. Only

accepted products are laid directly into the paper tape in

accordance with IEC 60286-3*.

ASSEMBLY

The resistors are suitable for processing on automatic

SMD assembly systems. They are suitable for automatic

soldering using reflow or vapour phase as shown in

IEC 61760-1*. For ACAC resistor arrays automatic soldering

using wave can also be used. 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, 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. The

permitted storage time is 20 years, whereas the solderability

is specified for 2 years after production or requalification. The

immunity of the plating against tin whisker growth has been

proven under extensive testing.

All

products

comply

with

the

and

the

list

of

legal

restrictions

on

hazardous substances. This includes full compliance with

the following directives:

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

Annex II (ELV II)

• 2002/95/EC Restriction of the use of Hazardous

Substances directive (RoHS)

• 2002/96/EC Waste Electrical and Electronic Equipment

Directive (WEEE)

APPROVALS

Where applicable, the resistors are tested in accordance with

EN 140401-801 which refers to EN 60115-1 and EN 140400.

Notes

organisation representing the information and communications technology and consumer electronics), see www.eicta.org

→ issues →

environment policy

→ chemicals → chemicals for electronics

• The quoted IEC standards marked with an asterisk (*) are also released as EN standards with the same number and identical contents

Circuit Type 03