Document Number 28530

For technical questions, contact: dc-film@vishay.com

www.vishay.com

Revision: 18-Oct-07

329

BFC2 809 07...

Vishay BCcomponents

Film Dielectric Trimmers

FEATURES

• High temperature type

• Housing dimensions:

11 mm x14mmx9mm

• For a basic grid of 2.54 mm

• Top adjustment

APPLICATIONS

• For fine adjustment in professional applications

DESCRIPTION:

The trimmers consist of a glass reinforced polysulphone

frame with a polysulphone dust cover, brass rotor and stator

with PTFE or polycarbonate film as the dielectric. The stator

plates are stacked on pins and separated by rings, so that it

is possible to produce a single stator or a differential type.

The rotor contact surfaces are plated to ensure a long life

and a stable contact even under severe climatic conditions.

QUALITY LEVEL:

Sampling and data evaluation for quality level in accordance

with

“MIL-STD-105D” and “IEC 60410”:

< 0.15 % major defects

< 0.65 % minor defects

subjected to the full test voltage.

SINGLE STATOR TYPE

2.5/20 to 7/100 pF

DIFFERENTIAL TYPE

2/12 to 7/150 pF

RATED VOLTAGE (DC):

200 V

LIFE OF TRIMMER:

Maximum 10 cycles: rotation in 180° only (the electrical and

mechanical performance is not guaranteed if rotated beyond

10 cycles)

TEST VOLTAGE (DC) FOR 1 MINUTE:

400 V

MAXIMUM CONTACT RESISTANCE:

5 m

Ω

MINIMUM INSULATION RESISTANCE BETWEEN

STATOR AND ROTOR:

10 000 M

Ω

CATEGORY TEMPERATURE RANGE:

- 40 to + 125 °C

CLIMATIC CATEGORY (IEC 60068):

40/125/21

MINIMUM STORAGE TEMPERATURE:

- 55 °C

RELATED SPECIFICATION:

IEC 60418-1 and 4

EFFECTIVE ANGLE OF ROTATION:

180° (rotation in 180° only, see “Life of Trimmer”)

OPERATING TORQUE:

1.5 to 25 mNm

MAXIMUM AXIAL THRUST:

2 N

e3