PTZ Series
Diodes
Zener diode
PTZ Series
zExternal dimensions (Unit : mm)
zApplications
1) Voltage regulation and voltage limiting.
2) Voltage surge absorption.
4.5±0.2
zFeatures
1) Small surface mounting type. (PMDS)
2) 1W of power can be obtained despite compact size.
3) High surge withstand level.
0.1
+0.02
−0.1
5.0±0.3
1.2±0.3
1.5±0.2
CATHODE MARK
0∼0.1
2.0±0.2
2.6±0.2
ROHM : PMDS
EIAJ : −
JEDEC : SOD-106
Model name (voltage rank)
Date of manufacture Ex. 1999.12→9.C
zConstruction
Silicon epitaxial planar
zAbsolute maximum ratings (Ta=25°C)
Parameter
Symbol
Limits
Unit
Power dissipation ∗
P
1
W
Junction temperature
Tj
150
°C
Storage temperature
Tstg
−55 to +150
°C
∗ Mounting density of other power components should be taken into consideration when laying out the
pattern.
zMarking (Voltage rank)
Type No.
Type No.
Type No.
PTZ3.6B
3.6
B
PTZ8.2B
8.2
B
PTZ20B
20
B
PTZ3.9B
3.9
B
PTZ9.1B
9.1
B
PTZ22B
22
B
PTZ4.3B
4.3
B
PTZ10B
10
B
PTZ24B
24
B
PTZ4.7B
4.7
B
PTZ11B
11
B
PTZ27B
27
B
PTZ5.1B
5.1
B
PTZ12B
12
B
PTZ30B
30
B
PTZ5.6B
5.6
B
PTZ13B
13
B
PTZ33B
33
B
PTZ6.2B
6.2
B
PTZ15B
15
B
PTZ36B
PTZ6.8B
6.8
B
PTZ16B
16
B
−
−
PTZ7.5B
7.5
B
PTZ18B
18
B
−
−
36
B
(Ex.) PTZ3.6B
3.6B
9
C
Zener voltage category
Year of manufacture: last
digit of Western calendar
Ex.) PTZ3.6B
1999
Dec.
Month Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec.
Symbol 1
2
3
4
5
6
7
8
9
O
A
C
Month of manufacture
Rev.A
1/4
PTZ Series
Diodes
zElectrical characteristics (Ta=25°C)
Operating
resistance
Zener voltage subdivision
Type
VZ (V)
Reverse current
ZZ (Ω)
IR (µA)
Max.
IZ
(mA)
Max.
VR
(V)
Min.
Max.
IZ
(mA)
PTZ 3.6B
3.600
4.000
40
15
40
20
1.0
PTZ 3.9B
3.900
4.400
40
15
40
20
1.0
PTZ 4.3B
4.300
4.800
40
15
40
20
1.0
PTZ 4.7B
4.700
5.200
40
10
40
20
1.0
PTZ 5.1B
5.100
5.700
40
8
40
20
1.0
PTZ 5.6B
5.600
6.300
40
8
40
20
1.5
PTZ 6.2B
6.200
7.000
40
6
40
20
3.0
PTZ 6.8B
6.800
7.700
40
6
40
20
3.5
PTZ 7.5B
7.500
8.400
40
4
40
20
4.0
PTZ 8.2B
8.200
9.300
40
4
40
20
5.0
PTZ 9.1B
9.100
10.200
40
6
40
20
6.0
PTZ 10B
10.000
11.200
40
6
40
10
7.0
PTZ 11B
11.000
12.300
20
8
20
10
8.0
PTZ 12B
12.000
13.500
20
8
20
10
9.0
PTZ 13B
13.300
15.000
20
10
20
10
10.0
PTZ 15B
14.700
16.500
20
10
20
10
11.0
PTZ 16B
16.200
18.300
20
12
20
10
12.0
PTZ 18B
18.000
20.300
20
12
20
10
13.0
PTZ 20B
20.000
22.400
20
14
20
10
15.0
PTZ 22B
22.000
24.500
10
14
10
10
17.0
PTZ 24B
24.000
27.600
10
16
10
10
19.0
PTZ 27B
27.000
30.800
10
16
10
10
21.0
PTZ 30B
30.000
34.000
10
18
10
10
23.0
PTZ 33B
33.000
37.000
10
18
10
10
25.0
PTZ 36B
36.000
40.000
10
20
10
10
27.0
Notes) 1. The Zener voltage is measured 40ms after power is supplied.
2. The operating resistances (Zz, Zzk) are measured by superimposing a minute alternating current on
the regulated current (Iz).
Rev.A
2/4
PTZ Series
Diodes
zElectrical characteristic curves (Ta=25°C)
Ceramic substrate
82×30×1.0 (mm)
800
600
400
Individual part
(not mounted)
200
0
0
25
50
87.5 100
150
200
AMBIENT TEMPERATURE : Ta (°C)
Fig.1 Derating curve
Mounting position
15mm
1.5W
A
1.0W
100
0.5W
Alumina substrate
114×124×1.6
(Units : mm)
0
1
10
100
MOUNTING QUANTITY (pcs/substrate)
200
Mounting position
15mm
1.5W
10mm
1000
200
RISE IN DIODE A SURFACE TEMPERATURE (°C)
POWER DISSIPATION : Pd (mn)
Glass epoxy substrate 32×30×1.6 (mm)
10mm
RISE IN DIODE A SURFACE TEMPERATURE (°C)
1200
A
1.0W
0.5W
100
0
Glass epoxy
substrate
144×220×1.6
(Units : mm)
1
10
100
MOUNTING QUANTITY (pcs/substrate)
Fig.3 Rise in surface temperature
Fig.2 Rise in surface temperature
ZENER CURRENT : IZ (A)
36
33
30
27
24
22
20
18
16
15
13
11
12
10
9.1
8.2
6.8
7.5
5.6
6.2
4.3
4.7
5.1
3.9
3.6
100m
10m
1m
100µ
10µ
1µ
5
0
10
15
20
25
30
35
40
ZENER VOLTAGE : VZ (V)
200
Mounting position
15mm
1.5W
10mm
RISE IN DIODE A SURFACE TEMPERATURE (°C)
Fig.4 Zener voltage characteristics
A
1.0W
0.5W
100
0
Glass epoxy
substrate
144×220×1.6
(Units : mm)
1
10
100
MOUNTING QUANTITY (pcs/substrate)
Fig.3 Rise in surface temperature
Rev.A
3/4
PTZ Series
Diodes
zMakeup of the part number
• Please follow the part number designation when the order is placed.
• Fill in from the left, leaving any extra boxes empty on the right.
• Please refer packing specification about packing form.
zZener diodes
Example)
U D Z T E − 1 7 2 .
Part number
Packaging configuration
0 B
Zener voltage
Subdivision
Rev.A
4/4
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.1
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