INCH-POUND
MIL-PRF-26/4F
15 September 2006
SUPERSEDING
MIL-PRF-26/4E
14 June 2001
PERFORMANCE SPECIFICATION SHEET
RESISTOR, FIXED, WIRE-WOUND (POWER TYPE),
STYLES RW55, RW56, RW67, RW68, and RW69
ALL STYLES, EXCEPT RW56, ARE INACTIVE FOR NEW DESIGN
This specification is approved for use by all Departments
and Agencies of the Department of Defense.
1. SCOPE
1.1 Scope. This specification covers the associated requirements for styles RW55, RW56, RW67,
RW68, and RW69, wirewound inductive resistors.
1.2 Part or Identifying Number (PIN). Resistors covered by this specification are identified by a PIN that
consists of the style designation, characteristic, and coded resistive value. The PIN is derived in
accordance with MIL-PRF-26 and is in the following form:
RW56
V
471
│
│
│
Style
Characteristic
Resistance
(1.2.1)
(1.2.2)
(1.2.3)
1.2.1 Style. The style is identified by the two-letter symbol "RW" followed by a two-digit number.
1.2.2 Characteristic. The characteristic is identified by a single letter that identifies the maximum
continuous operating temperature (surface hot spot), the minimum insulation resistance value at the end
of the moisture resistance test, and the resistance temperature characteristic in accordance with table I.
1.2.3 Resistance. The nominal resistance expressed in ohms is identified by a three-digit number: The
first two digits represent significant figures and the last digit specifies the number of zeroes to follow.
When resistance values less than 10 ohms are required, the letter "R" is substituted for one of the
significant digits to represent the decimal point. When the letter "R" is used, succeeding digits of the
group represent significant figures as shown in the following example.
R47 = 0.47 ohm
4R7 = 4.7 ohm
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