WSZ
Vishay Dale
Wirewound Resistors, Surface Mount,
Silicone or Cerment Coated, High Power
FEATURES
• Low cost, high power (up to 3.75 W)
• All welded construction
• Ideal for pulsing application
• Ceramic core
• Available on tape and reel
• Lead (Pb)-free version is RoHS compliant
STANDARD ELECTRICAL SPECIFICATIONS
RESISTANCE RANGE (1)
RESISTANCE RANGE
POWER
RATING
P25 °C
E12 = 1ꢀ ꢁ Tol., E24 = 5 ꢁ Tol.
DIN 41432
MODEL
TOLERANCE
ENCAPSULATION
(3)
TCR - 1ꢀ ... - 8ꢀ ppm/K (2)
TCR 1ꢀꢀ ... 18ꢀ ppm/K
TCR
TCR
3ꢀ ppm/°C
(CLASS 3)
5ꢀ ppm/°C
(CLASS 1)
1 %
2 %
1 Ω to 510 Ω
0.22 Ω to 510 Ω
0.10 Ω to 510 Ω
0.10 Ω to 510 Ω
-
-
-
-
-
-
-
-
-
-
WSZ6720 1.8 W
WSZ7532 3.75 W
Cement
Silicone
15 %
24 Ω to 3.3 kΩ
1.8 Ω to 3.3 kΩ
10 %
1 %, 3 %
5 %, 10 %
-
-
-
-
-
10 Ω to 15 kΩ
1 Ω to 9.99 Ω 10 Ω to 15 kΩ
Notes
(1) Lower TCR or other power range on request
(3) Power rating depends on the maximum temperature at the solder
point, solder pad dimensions, the component placement density
and the substrate material
(2)
≤ 1 Ω ≤ 400 ppm/K
PART NUMBER AND PRODUCT DESCRIPTION
Part Number: WSZ672ꢀ115ꢀ9KBMꢀꢀꢀ
W
S
Z
6
7
2
ꢀ
1
1
5
ꢀ
9
K
B
M
ꢀ
ꢀ
ꢀ
MODEL
TCR/MATERIAL
VALUE
TOLERANCE CODE
PACKAGING CODE
SPECIAL
WSZ672ꢀ
1 =
- 10 ... - 80 ppm/K
WM 50
3 digit value
1 digit multiplier
MULTIPLIER
7 = *10-3
F = 1.0 %
G = 2.0 %
J = 5.0 %
K = 10.0 %
BM = Lead (Pb)-free,
tape/reel
LX = Lead (Pb)-free,
bulk
3 digits
ꢀꢀꢀ = Standard
Class 1
3 =
8 = *10-2
100 ... 180 ppm/K
WM 110
9 = *10-1
ꢀ = *100
Class 3
1 = *101
2 = *102
3 = *103
Product Description: WSZ672ꢀ WM 5ꢀ 15 Ω 1ꢀ ꢁ BM
WSZ672ꢀ
WM 5ꢀ
15 Ω
1ꢀ ꢁ
BM
MODEL (4)
TCR/MATERIAL (4)
VALUE (4)
TOLERANCE CODE (4)
PACKAGING DESCRIPTION(5)
Part Number: WSZ75321KꢀꢀꢀJBA1
W
S
Z
7
5
3
2
1
K
ꢀ
ꢀ
ꢀ
J
B
A
1
MODEL
VALUE
TOLERANCE CODE
PACKAGING CODE
SPECIAL
WSZ7532
R = Decimal
K = Thousand
54R15 = 54.15
1K325 = 1325
F = 1.0 %
G = 2.0 %
H = 3.0 %
J = 5.0 %
K = 10 %
EA = Lead (Pb)-free, tape/reel
EK = Lead (Pb)-free, bulk
(Dash number)
(up to 3 digits)
From 1 to 999
as applicable
TA = Tin/lead, tape/reel
BA = Tin/lead, bulk
Product Description: WSZ7532-1 1 kΩ 5 ꢁ B43
WSZ7532-1
1 kΩ
5 ꢁ
B43
PACKAGING DESCRIPTION(5)
MODEL (4)
VALUE (4)
TOLERANCE CODE (4)
Notes
(4) See “Part Number and Product Description”
(5) See “Packaging Table”
* Pb containing terminations are not RoHS compliant, exemptions may apply
** Please see document “Vishay Green and Halogen-Free Definitions (5-2008)”: www.vishay.com/doc?99902
www.vishay.com
312
For technical questions in Europe, contact: ww1resistors@vishay.com
For technical questions in Americas/Asia, contact: ww2aresistors@vishay.com
Document Number: 30246
Revision: 04-Mar-09
