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
E12 = ± 10 % Tol., E24 = ± 5 % Tol.
RATING TOLERANCE
DIN 41432
ENCAPSULATION
MODEL
P
25 °C (3)
TCR
TCR
TCR - 10 ... - 80 ppm/K
(2)
TCR 100 ... 180 ppm/K
(CLASS 3)
± 50 ppm/°C ± 30 ppm/°C
(CLASS 1)
-
-
±1%
1
Ω
to 510
Ω
-
±2%
0.22
Ω
to 510
Ω
-
-
-
Cement
WSZ6720 1.8 W
± 15 %
0.10
Ω
to 510
Ω
24
Ω
to 3.3 kΩ
-
-
± 10 %
0.10
Ω
to 510
Ω
1.8
Ω
to 3.3 kΩ
-
-
± 1 %, ± 3 %
-
-
-
10
Ω
to 15 kΩ
Silicone
WSZ7532 3.75 W
± 5 %, ± 10 %
-
-
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
(2)
≤
1
Ω ≤
400 ppm/K
point, solder pad dimensions, the component placement density
and the substrate material
PART NUMBER AND PRODUCT DESCRIPTION
Part Number: WSZ672011509KBM000
W
MODEL
WSZ6720
S
Z
6
7
2
0
VALUE
1
1
5
0
9
K
B
M
0
0
0
TCR/MATERIAL
1
=
- 10 ... - 80 ppm/K
WM 50
Class 1
3
=
100 ... 180 ppm/K
WM 110
Class 3
TOLERANCE CODE
F
= ± 1.0 %
G
= ± 2.0 %
J
= ± 5.0 %
K
= ± 10.0 %
PACKAGING CODE
BM
= Lead (Pb)-free,
tape/reel
LX
= Lead (Pb)-free,
bulk
SPECIAL
3 digits
000
= Standard
3 digit value
1 digit multiplier
MULTIPLIER
7
= *10
-3
8
= *10
-2
9
= *10
-1
0
= *10
0
1
= *10
1
2
= *10
2
3
= *10
3
Product Description: WSZ6720 WM 50 15
Ω
10 % BM
WSZ6720
MODEL
(4)
WM 50
TCR/MATERIAL
(4)
15
Ω
VALUE
(4)
10 %
TOLERANCE CODE
(4)
BM
PACKAGING DESCRIPTION
(5)
Part Number: WSZ75321K000JBA1
W
MODEL
WSZ7532
S
Z
7
VALUE
5
3
2
1
K
0
0
0
J
B
A
1
SPECIAL
(Dash number)
(up to 3 digits)
From
1 to 999
as applicable
TOLERANCE CODE
F
= ± 1.0 %
G
= ± 2.0 %
H
= ± 3.0 %
J
= ± 5.0 %
K
= ± 10 %
5%
TOLERANCE CODE
(4)
PACKAGING CODE
EA
= Lead (Pb)-free, tape/reel
EK
= Lead (Pb)-free, bulk
TA
= Tin/lead, tape/reel
BA
= Tin/lead, bulk
B43
R
= Decimal
K
= Thousand
54R15
= 54.15
1K325
= 1325
Product Description: WSZ7532-1 1 kΩ 5 % B43
WSZ7532-1
MODEL
(4)
1 kΩ
VALUE
(4)
PACKAGING DESCRIPTION
(5)
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
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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
WSZ
Wirewound Resistors, Surface Mount,
Silicone or Cerment Coated, High Power
DIMENSIONS
D
A
Vishay Dale
DIMENSIONS
in millimeters [inches]
MODEL
WSZ6720
C
A
max.
B
C
max.
D
nom
E
Z
E
B
a
13.2 17 ± 0.5 4.8
0.8
5 ± 0.5
3.6 ± 0.5
[0.512] [0.670] [0.189] [0.031] [0.20 ± 0.02] [0.142 ± 0.02]
8.18
[0.322]
6.5
[0.256]
14.27 19.86
4.78 0.813
WSZ7532 [0.562] [0.782] [0.188] [0.032]
Z
≤
0.4 PIN PLANE
b
I
MODEL
WSZ6720
WSZ7532
SOLDER PAD DIMENSIONS
in millimeters [inches]
a
10 [0.394]
4.0 [0.157]
b
10 [0.394]
9.50 [0.374]
l
14.5 [0.57]
15.05 [0.593]
TECHNICAL SPECIFICATIONS
PARAMETER
Operating Temperature Range
Maximum Working Voltage
Weight (Typical)
Terminal Strength
UNIT
°C
V
g
lb
WSZ6720
- 55/+ 250
(P x
R)
1/2
0.6
10 minimum
WSZ7532
- 65/+ 350
(P x
R)
1/2
0.7
10 minimum
PERFORMANCE
TEST
Temperature Cycling
High Temperature Exposure
Short Time Overload
Shock, Specified Pulse
Vibration, High Frequency
Load Life
Resistance to Soldering Heat
Temperature Rise in °C
300
CONDITIONS OF TEST
- 55 °C to + 125 °C, 5 cycles, 15 min at each extreme
1000 h at + 250 °C
5 x rated power for 5 s
100 g’s for 6 ms, 10 shocks
Frequency varied 10 Hz to 2000 Hz, 20 g peak, 2 directions 6 each
2000 h at rated power, + 25 °C, 1.5 h ON, 0.5 h OFF
+ 260 °C solder, 10 - 12 s dwell, 25 mm/s emergence
Rated Power in
%
120
100
80
60
40
20
0
0
1
2
3
4
5
0
- 55
50
TEST LIMITS
WSZ6720
± 3 %
ΔR
± 3 %
ΔR
± 1 %
ΔR
± 1 %
ΔR
± 1 %
ΔR
± 3 %
ΔR
± 1 %
ΔR
WSZ7532
± (2 % + 0.05
Ω) ΔR
± (2 % + 0.05
Ω) ΔR
± (2 % + 0.05
Ω) ΔR
± (0.2 % + 0.05
Ω) ΔR
± (0.2 % + 0.05
Ω) ΔR
± (3 % + 0.05
Ω) ΔR
± (0.5 % + 0.05
Ω) ΔR
200
WSZ6720
100
WSZ7532
WSZ7532
WSZ6720
150
250
350
Power in W
Temperature Rise
Measurement
based
on recommended solder pads
Derating
Ambient Temperature in °C
PACKAGING
MODEL
WSZ6720
WSZ7532
(1)
REEL
TAPE WIDTH
24 mm
32 mm/Embossed plastic
DIAMETER
330 mm
330 mm/13"
PIECES/REEL
1250
350
CODE
BM
EA/TA
Note
(1)
Embossed Carrier Tape per latest revision of EIA-481-3
Document Number: 30246
Revision: 04-Mar-09
For technical questions in Europe, contact: ww1resistors@vishay.com
For technical questions in Americas/Asia, contact: ww2aresistors@vishay.com
www.vishay.com
313
Legal Disclaimer Notice
Vishay
Disclaimer
All product specifications and data are subject to change without notice.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf
(collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein
or in any other disclosure relating to any product.
Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any
information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this
document or by any conduct of Vishay.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such
applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting
from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding
products designed for such applications.
Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000
Revision: 18-Jul-08
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