INCH-POUND
MIL-PRF-19/3D
31 July 2007
SUPERSEDING
MIL-PRF-19/3C
11 June 1999
PERFORMANCE SPECIFICATION
RESISTOR, VARIABLE, WIREWOUND
(LOW OPERATING TEMPERATURE), STYLE RA30
This specification is approved for use by all Department of Departments
and agencies of the Department of Defense.
1. SCOPE
1.1 Scope. This specification covers the requirements for style RA30, low operating temperature, wirewound,
variable resistors.
1.2 Part or Identifying Number (PIN). Variable resistors covered by this specification are identified by a PIN, which
is in the following form:
RA30
N
A
SK
103
A
⏐
⏐
⏐
⏐
⏐
⏐
Resistance
Operating shaft
Resistance
Bushing
Switch
characteristic
Style
and length
(1.2.4)
(1.2.1)
(1.2.2)
(1.2.5)
(1.2.3)
1.2.1 Bushing. The type of bushing applicable to this specification is identified by a single symbol in accordance
with table I.
TABLE I. Bushing.
Symbol
Bushing
N
Standard
L
Locking
S
Shaft and panel-seal (standard)
T
Shaft and panel seal (locking)
1.2.2 Switch. The type of switch or lock of switch applicable to this specification is identified by a single symbol in
accordance with table II.
TABLE II. Switch.
Symbol
Switch
A
No switch
Single pool, single throw switch which is actuated to the
B
"on" position at the start of the clockwise rotation.
Comments, suggestions, or questions on this document should be addressed to: Defense Supply Center, Columbus,
ATTN: DSCC VAT, Post Office Box 3990, Columbus, Ohio 43218-3990 or by email Resistor@dla.mil. Since contact
information can change, you may want to verify the currency of this address information using the ASSIST Online
database at https://assist.daps.dla.mil/ .
AMSC N/A
FSC 5905
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business