SM
www.vishay.com
Vishay Huntington
Wirewound Resistors, Precision Power, Surface Mount
FEATURES
• All welded construction
• Molded encapsulation
• Wraparound terminations
• Excellent stability at different environmental
conditions
• High power ratings (up to 4 W)
• Available in non-inductive styles (“NI”
SPECIAL)
with
Ayrton-Perry
winding
(Resistance max. value is one half standard
value)
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
STANDARD ELECTRICAL SPECIFICATIONS
POWER RATING
RESISTANCE
RANGE
GLOBAL
MODEL
HISTORICAL
MODEL
TOLERANCE
ꢀ
WEIGHT (TYPICAL)
g/1000 PIECES
P70 °C
W
SM-1
SM-2
SM-3
SM-4
SM-5
SM1
SM2
SM3
SM4
SM5
0.5
1
0.1 to 400
0.1 to 3K
0.1, 0.25, 0.5, 1, 5
0.1, 0.25, 0.5, 1, 5
0.1, 0.25, 0.5, 1, 5
0.1, 0.25, 0.5, 1, 5
0.1, 0.25, 0.5, 1, 5
45
230
3
0.1 to 25K
0.1 to 15K
0.1 to 50K
1360
680
2
4
2040
TECHNICAL SPECIFICATIONS
PARAMETER
UNIT
ppm/°C
VAC
SM RESISTOR CHARACTERISTICS
Temperature Coefficient
20 > 10 , 50 1 to 10 , contact factory for 0.99 and below
Dielectric Withstanding Voltage
Operating Temperature Range
Maximum Working Voltage
1000
°C
-55 to +275
(P x R)1/2
V
GLOBAL PART NUMBER INFORMATION
Global Part Numbering example: SM-2R4000FE6 (visit www.vishay.net SAP parts manual for all options)
E
6
S
M
-
2
R
4
0
0
0
F
GLOBAL MODEL
(4 digits)
VALUE
(5 digits)
TOLERANCE
(1 digit)
PACKAGING CODE
(2 digits)
SPECIAL
(up to 3 digits)
SM-1
SM-2
SM-3
SM-4
SM-5
R = Decimal
K = Thousand
1R500 = 1.5
4K000 = 4 k
B = 0.1 ꢀ
C= 0.25 ꢀ
D = 0.5 ꢀ
F = 1 ꢀ
E6 = lead (Pb)-free,
7" tape and reel pack
E7 = lead (Pb)-free,
13" tape and reel pack
(Dash Number)
From 1 to 999
as applicable
NI = Non-inductive
J = 5ꢀ
Historical Part Number example: SM2-0.4-1ꢀ
SM2
0.4
1 ꢀ
TOLERANCE
HISTORICAL MODEL
RESISTANCE VALUE
Revision: 06-Apr-18
Document Number: 31812
1
For technical questions, contact: ww2bresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000