RWR81S3R92FSB12 Vishay, RWR81S3R92FSB12 Datasheet - Page 2

• Manufacturer Part Number: RWR81S3R92FSB12
• Manufacturer: Vishay
• Type: Wirewoundr

Specifications of RWR81S3R92FSB12

• Power Rating(s): 1W
• Resistance: 3.92ohm
• Tolerance (+ Or -): 1%
• Temperature Coefficient: ±50
• Termination Style: Axial
• Operating Temp Range: -65C to 250C
• Case Style: Ceramic Hi Temp Sil
• Military Standard: MIL-PRF-39007
• Failure Rate: S
• Lead Spacing (nom): Not Requiredmm
• Product Length (mm): 6.35mm
• Product Depth (mm): Not Requiredmm
• Product Height (mm): Not Requiredmm
• Construction: Cylindrical
• Lead Free Status / Rohs Status: Not Compliant

DIMENSIONS in inches [millimeters]
Note
(1)
MATERIAL SPECIFICATIONS
Element: Copper-nickel alloy or nickel-chrome alloy,
depending on resistance value
Core: Ceramic, beryllium oxide, steatite or alumina,
depending on power requirement
Coating: Special high temperature silicone
Terminal and Winding: The terminal and the winding are
identified by a letter symbol in the military type designation.
Terminals: Solderable - Tinned Copperweld
Weldable - bare nickel per MIL-STD-1276, Type N-1
End Caps: Stainless steel
Part Marking: Source code, JAN, military PIN, date/lot code
Note
(2)
Document Number: 30203
Revision: 23-Feb-11
MILITARY MODEL
RWR81
RWR82
RWR80
RWR71
RWR89
RWR74
RWR84
RWR78
PERFORMANCE
TEST
Thermal Shock
Short Time Overload
Dielectric Withstanding Voltage
Low Temperature Storage
High Temperature Exposure
Moisture Resistance
Shock, Specified Pulse
Vibration, High Frequency
Load Life
Extended Life
Terminal Strength
On some standard reel pack methods, the leads may be trimmed to a shorter length than shown.
For resistance values above 100 , test limit is ± 1.0 %.
Military symbol:
S = Solderable, inductively wound
W = Weldable, inductively wound
N = Solderable, non-inductively wound
Z = Weldable, non-inductively wound
0.406 ± 0.031 [10.31 ± 0.787]
0.250 ± 0.031 [6.35 ± 0.787]
0.312 ± 0.016 [7.92 ± 0.406]
0.812 ± 0.062 [20.62 ± 1.58]
0.560 ± 0.062 [14.22 ± 1.58]
0.875 ± 0.062 [22.23 ± 1.58]
0.875 ± 0.062 [22.23 ± 1.58]
1.780 ± 0.062 [45.21 ± 1.58]
Wirewound Resistors, Military/Established Reliability
MIL-PRF-39007 Qualified, Type RWR, R Level
MIL-STD-2.2, method 303
5 x rated power (RWR71, RWR80, RWR81, RWR89, RWR82),
10 x rated power (RWR74, RWR78, RWR84) for 5 s
500 V
1000 V
- 65 °C for 24 h
250 °C for 2000 h
MIL-STD-202, method 106
MIL-STD-202, method 205, condition C
MIL-STD-202, method 204, condition D
2000 h at rated power, + 25 °C, 1.5 h “ON”, 0.5 h “OFF”
10 000 h at rated power, + 25 °C, 1.5 h “ON”, 0.5 h “OFF”
MIL-STD-202, method 211, condition A and C
5 pound (RWR80, RWR81, RWR82),
10 pound (RWR71, RWR74, RWR78, RWR84, RWR89)
A
For technical questions, contact:
rms
rms
(RWR80, RWR81, RWR82),
(RWR71, RWR74, RWR78, RWR84, RWR89), 1 min duration
®
B
0.078 + 0.016 - 0.031 [1.98 + 0.406 - 0.787]
CONDITIONS OF TEST
DIMENSIONS in inches [millimeters]
0.085 ± 0.020 [2.16 ± 0.508]
0.094 ± 0.031 [2.39 ± 0.787]
0.187 ± 0.031 [4.75 ± 0.787]
0.187 ± 0.031 [4.75 ± 0.787]
0.312 ± 0.031 [7.92 ± 0.787]
0.312 ± 0.031 [7.92 ± 0.787]
0.312 ± 0.031 [7.92 ± 0.787]
A
[e-mail]
DERATING
120
100
1.50 [38.10]
40
80
60
20
- 65 - 50
0
B
min.
C
(1)
0
25
50
AMBIENT TEMPERATURE IN °C
0.020 ± 0.0015 [0.508 ± 0.038]
0.020 ± 0.0015 [0.508 ± 0.038]
0.020 ± 0.0015 [0.508 ± 0.038]
0.032 ± 0.002 [0.813 ± 0.051]
0.032 ± 0.002 [0.813 ± 0.051]
0.040 ± 0.002 [1.02 ± 0.051]
0.040 ± 0.002 [1.02 ± 0.051]
0.040 ± 0.002 [1.02 ± 0.051]
± (1.0 % + 0.005 ) R
RWR Military
± (0.2 % + 0.005 ) R
± (0.2 % + 0.005 ) R
± (0.1 % + 0.005 ) R
± (0.1 % + 0.005 ) R
± (0.2 % + 0.005 ) R
± (0.1 % + 0.005 ) R
± (0.1 % + 0.005 ) R
± (0.5 % + 0.005 ) R
± (1.0 % + 0.005 ) R
± (0.1 % + 0.005 ) R
150
TEST LIMITS
Vishay Dale
C
www.vishay.com
(2)
250
2