MODEL WVLM
Vishay Dale
Inductors
Variable, Subminiature, Shielded
FEATURES
• Subminiature shielded adjustable inductor.
• High Q values.
• Vertical or horizontal mounting.
• Unitized epoxy-molded construction.
• Inductance range is .10µH to 100,000µH.
• .300" [7.62mm] diameter by .400" [10.16mm] length.
• Printed board mounting facilitated by .200" [5.08mm] grid spacing.
• Unit has shield construction to allow maximum density packaging.
• Accommodates close inductance adjustments in high density circuits that
demand exceptional stability and high “Q” in the smallest size available.
ELECTRICAL SPECIFICATIONS
Operating Temperature: - 55°C to + 105°C.
Adjustable Inductance Range: Tunable range; ± 5% for
.10µH to 1µH. ± 10% for 1.2µH to 100,000µH.
MECHANICAL SPECIFICATIONS
Tuning Tool: Use Vishay Dale No. 642866-01.
Torque: .40 to 6 inch-ounces.
Dielectic Strength: 840V RMS at sea level.
Working Voltage: 300 VDC.
Terminal Pull: 3 pounds.
Rated Current: Based on temperature rise not to exceed
15°C at + 90°C ambient.
DENSITY SPECIFICATIONS
Weight: 1.5 grams maximum.
Shielding: 3% coupling maximum when two units are
tested side by side.
Incremental Current: The DC current required to cause
a five percent reduction in the nominal inductance value.
DIMENSIONAL CONFIGURATIONS [Numbers in brackets indicate millimeters]
Vertical Style
Horizontal Style
.320 [8.13]
.400 [10.16]
.300 ± .020
[7.62 ± .508]
.400 ± .030
[10.16 ± .762]
3/8 ± 1/16
[9.52 ± 1.59]
.020
[.508]
Dia. Wire
Phosphor-Bronze
3/8 ± 1/16
[9.52 ± 1.59]
.200 ± .010
[5.08 ± .254]
.375 [9.53]
.050 [1.27]
#24 .020 ± .002
[.508 ± .051] TCW
.200 ± .010
[5.08 ± .254]
Tuning Tool P/N 642866-01
www.vishay.com
130
Document Number 34087
Revision 26-Apr-99
