Document Number: 28725

For technical questions contact: ff3cresistors@vishay.com

www.vishay.com

Revision: 20-Sep-05

59

MBA 0204, MBB 0207, MBE 0414 - Precision

Lead (Pb)-Free Precision Leaded Resistors

Vishay Beyschlag

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

the 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 helical groove in the resistive layer without

damaging the ceramics. A further conditioning is applied in

order to stabilise the trimming result. 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 or five colour code rings designate the

resistance

value

and

tolerance

in

accordance

with

IEC 60062.

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

extensive

testing.

All

products

comply

with

the

CEFIC-EECA-EICTA list of legal restrictions on hazardous

substances. This includes full compliance with the following

directives:

• 2000/53/EC Annex II to End of Vehicle Life Directive (ELV II)

• 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. Approval of conformity is indicated by the CECC

logo on the package label.

Vishay

BEYSCHLAG

has

achieved

"Approval

of

Manufacturer" in accordance with EN 100114-1.

SPECIALS

On request, resistors are available with established reliability

in accordance with CECC 40101-806 Version E. Please

refer to the special data sheet for information on failure rate

level, available resistance ranges and ordering codes.

FUNCTIONAL PERFORMANCE

0.5

1

W

Ambient Temperature

100

150

-50

50

0

70

amb

ϑ

C

0

MBE 0414

MBA 0204

MBB 0207

Derating - Long Term Operation