English
Language : 

WSZ_15 Datasheet, PDF (1/3 Pages) Vishay Siliconix – Wirewound Resistors, Surface Mount,Silicone or Cement Coated, High Power
www.vishay.com
WSZ
Vishay
Wirewound Resistors, Surface Mount,
Silicone or Cement Coated, High Power
FEATURES
• Low cost, high power (up to 3.75 W)
Available
• All welded construction
• Ideal for pulsing application
• Ceramic core
• Available on tape and reel
• AEC-Q200 qualified available (1)
Available
• Material categorization: 
For definitions of compliance please see
www.vishay.com/doc?99912
Available
Note
Available
(1) Flame retardance test may not be applicable to
some resistor technologies.
Available
Note
* This datasheet provides information about parts that are RoHS-compliant and/or parts that are non-RoHS-compliant. For example, parts
with lead (Pb) terminations are not RoHS-compliant. Please see the information/tables in this datasheet for details.
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
WSZ6720
WSZ7532
SIZE
POWER
RATING
P25 °C
W
RESISTANCE
RANGE (2) 
TCR
(- 10 to - 80) ppm/K (3)
(CLASS 1)
RESISTANCE
RANGE (2) 
TCR
(100 to 180) ppm/K
(CLASS 3)
1 to 510
n/a
6720 1.8 (4)
0.22 to 510
0.10 to 510
n/a
24 to 3.3K
0.10 to 510
1.8 to 3.3K
7532 3.75
n/a
n/a
n/a
n/a
RESISTANCE
RANGE 
TCR
± 50 ppm/°C
n/a
n/a
n/a
n/a
n/a
1 to 9.99
RESISTANCE
RANGE 
TCR
± 30 ppm/°C
n/a
n/a
n/a
n/a
10 to 15K
10 to 15K
TOLERANCE
±%
WEIGHT
(typical)
g
1
2
5
0.6
10
1, 3
5, 10
0.7
ENCAPS.
Cement
Silicone
Notes
(2) Lower TCR or other power range on request. Resistance value to be selected for ± 10 % tolerance from E12 and for ± 5 % from E24.
(3)  1   400 ppm/K.
(4) Power rating depends on the maximum temperature at the solder point, solder pad dimensions, the component placement density and the
substrate material.
GLOBAL PART NUMBER INFORMATION
Global Part Numbering example: WSZ672011509KBM000
WS Z 6 7 2 0 1 1 5 0 9 KBM0 0 0
GLOBAL MODEL
TCR/MATERIAL
VALUE
TOLERANCE CODE
WSZ6720
1=
(-10 to -80) ppm/K
WM 50
Class 1
3=
(100 to 180) ppm/K
WM 110
Class 3
3 digit value
1 digit multiplier
MULTIPLIER
7 = *10-3
8 = *10-2
9 = *10-1
0 = *100
1 = *101
2 = *102
3 = *103
F = ± 1.0 %
G = ± 2.0 %
J = ± 5.0 %
K = ± 10.0 %
Historical Part Numbering example: WSZ6720 WM 50 15  10 % BM
WSZ6720
WM 50
15 
PACKAGING
BM = Lead (Pb)-free,
tape/reel
LX = Lead (Pb)-free,
bulk
10 %
HISTORICAL MODEL
TCR/MATERIAL
VALUE
TOLERANCE CODE
Global Part Numbering example: WSZ75321K000JTA
WS Z 7 5 3 2 1 K 0 0 0 J T A
SPECIAL
3 digits
000 = Standard
BM
PACKAGING
GLOBAL MODEL
WSZ7532
VALUE
R = Decimal
K = Thousand
54R15 = 54.15 
1K325 = 1325 
TOLERANCE CODE
F = ± 1.0 %
G = ± 2.0 %
H = ± 3.0 %
J = ± 5.0 %
K = ± 10 %
PACKAGING
EA = Lead (Pb)-free, tape/reel
EK = Lead (Pb)-free, bulk
TA = Tin/lead, tape/reel
BA = Tin/lead, bulk
SPECIAL
(Dash number)
(Up to 3 digits)
From 1 to 999
as applicable
Revision: 02-Apr-14
1
Document Number: 30246
For technical questions on the WSZ670, contact: ww1resistors@vishay.com; on the WSZ7532, 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