SMPZ3925B thru SMPZ3940B
New Product
Vishay General Semiconductor
Surface Mount Power Voltage-Regulating Diodes
FEATURES
• Very low profile - typical height of 1.0 mm
• Ideal for automated placement
• Low Zener impedance
• Low regulation factor
• Meets MSL level 1, per J-STD-020C, LF max peak
of 260 °C
DO-220AA (SMP)
• Component in accordance to RoHS 2002/95/EC
and WEEE 2002/96/EC
TYPICAL APPLICATIONS
For general purpose regulation
applications.
and
protection
MAJOR RATINGS AND CHARACTERISTICS
V
Z
P
D
P
D
T
j
max.
10 V to 43 V
1.5 W at T
L
= 75 °C
0.5 W at T
A
= 25 °C
150 °C
MECHANICAL DATA
Case:
DO-220AA (SMP)
Epoxy meets UL 94V-0 flammability rating
Terminals:
Matte tin plated leads, solderable per
J-STD-002B and JESD22-B102D
E3 suffix for commercial grade, HE3 suffix for high
reliability grade (AEC Q101 qualified)
Polarity:
Color band denotes cathode end
MAXIMUM RATINGS
(T
A
= 25 °C, unless otherwise noted)
PARAMETER
Power dissipation at T
L
= 75 °C (see Fig. 1)
(1)
Power dissipation at T
A
= 25 °C (see Fig. 1)
(2)
Maximum instantaneous forward voltage at 200 mA for all types
(3)
Operating junction and storage temperature range
Note:
(1) Mounted on P.C.B. with 5.0 x 5.0 mm copper pads attached to each terminal
(2) Mounted on minimum recommended pad layout
(3) Pulse test: 300 µs pulse width, 1 % duty cycle
SYMBOL
P
D
P
D
V
F
T
J
, T
STG
VALUE
1.5
0.5
1.5
- 65 to + 150
UNIT
W
W
V
°C
Document Number 88482
06-Dec-06
www.vishay.com
1
SMPZ3925B thru SMPZ3940B
Vishay General Semiconductor
ELECTRICAL CHARACTERISTICS
SYMBOL
V
Z
I
ZT
Z
ZT
I
ZK
Z
ZK
I
R
V
R
I
F
V
F
I
ZM
PARAMETER
Reverse Zener Voltage at I
ZT
Reverse Current
Maximum Zener Impedance at I
ZT
Reverse Current
Maximum Zener Impedance at I
ZK
Reverse Leakage Current at V
R
Reverse Voltage
Forward Current
Forward Voltage at I
F
Maximum DC Zener Current
V
Z
V
R
I
R
V
F
V
I
F
I
ZT
Zener Voltage Regulator
ELECTRICAL CHARACTERISTICS
(T
A
= 25 °C unless otherwise noted)
DEVICE
MARKING
CODE
MIN
SMPZ3925B
SMPZ3926B
SMPZ3927B
SMPZ3928B
SMPZ3929B
SMPZ3930B
SMPZ3931B
SMPZ3932B
SMPZ3933B
SMPZ3934B
SMPZ3935B
SMPZ3936B
SMPZ3937B
SMPZ3938B
SMPZ3939B
SMPZ3940B
25B
26B
27B
28B
29B
30B
31B
32B
33B
34B
35B
36B
37B
38B
39B
40B
9.5
10.5
11.4
12.4
14.3
15.2
17.1
19.0
20.9
22.8
25.7
28.5
31.4
34.2
37.1
40.9
ZENER
VOLTAGE
V
Z
AT I
ZT
(V)
NOM
10
11
12
13
15
16
18
20
22
24
27
30
33
36
39
43
MAX
10.5
11.6
12.6
13.7
15.8
16.8
18.9
21.0
23.1
25.2
28.4
31.5
34.7
37.8
41.0
45.2
37.5
34.1
31.2
28.8
25.0
23.4
20.8
18.7
17.0
15.6
13.9
12.5
11.4
10.4
9.6
8.7
TEST
CURRENT
I
ZT
(mA)
MAXIMUM
ZENER
IMPEDANCE
Z
ZT
AT I
ZT
(Ω)
4.5
5.5
6.5
7.0
9.0
10.0
12.0
14.0
17.5
19.0
23.0
26.0
33.0
38.0
45.0
53.0
Z
ZK
AT I
ZK
(Ω)
500
550
550
550
600
600
650
650
650
700
700
750
800
850
900
950
(mA)
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
MAXIMUM
REVERSE
LEAKAGE
CURRENT
I
R
AT V
R
(µA)
2.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
(V)
8.0
8.4
9.1
9.9
11.4
12.2
13.7
15.2
16.7
18.2
20.6
22.8
25.1
27.4
29.7
32.7
150
136
125
115
100
94
83
75
68
63
56
50
45
42
38
35
MAXIMUM
ZENER
CURRENT
I
ZM
(mA)
PART
NUMBER
THERMAL CHARACTERISTICS
(T
A
= 25 °C unless otherwise noted)
PARAMETER
Typical thermal resistance junction-to-lead
Typical thermal resistance junction-to-ambient
Note:
(1) Mounted on P.C.B. with 5.0 x 5.0 mm copper pads attached to each terminal
(2) Mounted on minimum recommended pad layout
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Document Number 88482
06-Dec-06
SYMBOL
R
θJL
R
θJA
LIMIT
50
250
UNIT
°C/W
°C/W
SMPZ3925B thru SMPZ3940B
Vishay General Semiconductor
ORDERING INFORMATION
PREFERRED P/N
SMPZ3925B-E3/84A
SMPZ3925B-E3/85A
UNIT WEIGHT (g)
0.024
0.024
PREFERRED PACKAGE CODE
84A
85A
BASE QUANTITY
3000
10000
DELIVERY MODE
7" Diameter Plastic Tape & Reel
13" Diameter Plastic Tape & Reel
RATINGS AND CHARACTERISTICS CURVES
(T
A
= 25 °C unless otherwise noted)
4.0
50
V
Z
- Temperature Coefficient (mV/°C)
P
D
, Maximum Power Dissipation (W)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
25
50
75
100
125
150
T
A
T
L
V
Z
at I
ZT
40
30
20
10
0
10
20
30
40
50
Temperature (°C)
V
Z
- Zener
Voltage
(V)
Figure 1. Steady State Power Durating
Figure 3. Typical Temperature Coefficients
100
10000
C
J
- Junction Capacitance (pF)
I
Z
, Zener Test Current (mA)
10
1000
Measured at Zero Bias
1
100
Measured at
V
Z
/2
T
j
= 25 °C
f = 1.0 MHz
V
sig
= 50 mVp-p
0.1
0
20
40
60
10
10
100
V
Z
, Zener
Voltage
(V)
V
(BR)
- Breakdown
Voltage
(V)
Figure 2. Typical Zener Voltage
Figure 4. Typical Junction Capacitance
Document Number 88482
06-Dec-06
www.vishay.com
3
SMPZ3925B thru SMPZ3940B
Vishay General Semiconductor
1000
Z
Z
- Dynamic Impedance (Ω)
100
I
Z
= 1 mA
10
I
Z
= 10 mA
I
Z
= 20 mA
1
10
15
20
25
30
35
40
45
V
Z
- Zener
Voltage
(V)
Figure 5. Typical Zener Impedance
PACKAGE OUTLINE DIMENSIONS
in inches (millimeters)
DO-220AA (SMP)
Cathode
band
0.012 (0.30) REF
0.086 (2.18)
0.074 (1.88)
0.053 (1.35)
0.041 (1.05)
0.036 (0.91)
0.024 (0.61)
0.142 (3.61)
0.126 (3.19)
0.158 (4.00)
0.146 (3.70)
0.103 (2.60)
0.087 (2.20)
0.032 (0.80)
0.016 (0.40)
0.013 (0.35)
0.004 (0.10)
0.045 (1.15)
0.033 (0.85)
0.012 (0.30)
0.000 (0.00)
0.100
(2.54)
0.018 (0.45)
0.006 (0.15)
0.105
(2.67)
0.025
(0.635)
0.030
(0.762)
0.050
(1.27)
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Document Number 88482
06-Dec-06
Legal Disclaimer Notice
Vishay
Notice
Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc.,
or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, by
estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's
terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express
or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness
for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify Vishay for any damages resulting from such improper use or sale.
Document Number: 91000
Revision: 08-Apr-05
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