www.vishay.com

Document Number: 28769

160

Revision: 16-Oct-09

MBA/SMA 0204 HF

Vishay Beyschlag

High Frequency Thin Film Leaded Resistors

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 grade

desired

temperature

coefficient.

Nickel

plated

steel

termination caps are firmly pressed on the metallised rods. A

special laser is used to achieve the target value by smoothly

cutting a low-inductivity non-helical groove in the resistive

layer without damaging the ceramics. Connecting wires of

electrolytic copper plated with 100 % pure tin are welded to

the termination caps. The resistors are covered by protective

coating designed for electrical, mechanical and climatic

protection.The terminations receive a final pure tin on nickel

plating. Four colour code rings designate the resistance

value and tolerance in accordance with IEC 60062.

Additional black dots near the 3rd colour ring identify the

special HF product.

The result of the determined production is verified by an

extensive testing procedure performed on 100 % of the

individual resistors. Only accepted products are stuck

directly

on

the

adhesive

tapes

in

accordance

with

IEC 60286-1.

ASSEMBLY

The resistors are suitable for processing on automatic

insertion equipment and cutting and bending machines.

Excellent solderability is proven, even after extended

storage. They are suitable for automatic soldering using

wave or dipping. The encapsulation is resistant to all

cleaning solvents commonly used in the electronics industry,

including alcohols, esters and aqueous solutions. The

resistors are completely lead (Pb)-free, the pure tin plating

provides

compatibility

with

lead

(Pb)-free

and

lead-containing soldering processes. The immunity of the

plating against tin whisker growth has been proven under

hazardous substances. This includes full compatibility with

the following directives:

Annex II (ELVII)

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

Substances Directive (RoHS)

Directive (WEEE)

APPROVALS

Where applicable, the resistors are tested in accordance with

CECC 40101-806

which

refers

to

EN 60115-1

and

EN 140100.

Vishay

Beyschlag

has

achieved

“Approval

of

Manufacturer” in accordance with IEC QC 001002-3,

clause 2. The release certificate for “Technology Approval

Schedule” in accordance with CECC 240001 based on

IEC QC 001002-3, clause 6 is granted for the Vishay

Beyschlag manufacturing process.

Notes

trade

organisation

representing

the

information

and

communications

technology

and

consumer

electronics),

see

www.eicta.org/index.php?id=1053&id_article=340

FUNCTIONAL PERFORMANCE

°C

100

150

0

- 50

0

5

0

0. 5

1

W

70

ϑ

MBA/SMA 0204 HF

Derating - Standard Operation