PTZ Series
Diodes
Zener diode
PTZ Series
Applications
1) Voltage regulation and voltage limiting.
2) Voltage surge absorption.
External dimensions
(Unit : mm)
1.5±0.2
CATHODE MARK
4.5±0.2
1.2±0.3
Features
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
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
Construction
Silicon epitaxial planar
Absolute maximum ratings
(Ta=25°C)
Parameter
Power dissipation
∗
Junction temperature
Storage temperature
Symbol
P
Tj
Tstg
Limits
1
150
−55
to
+150
Unit
W
°C
°C
∗
Mounting density of other power components should be taken into consideration when laying out the
pattern.
Marking
(Voltage rank)
Type No.
PTZ3.6B
PTZ3.9B
PTZ4.3B
PTZ4.7B
PTZ5.1B
PTZ5.6B
PTZ6.2B
PTZ6.8B
PTZ7.5B
(Ex.) PTZ3.6B
Zener voltage category
Year of manufacture: last
digit of Western calendar
Month of manufacture
Ex.) PTZ3.6B
1999
Dec.
Type No.
3.6
3.9
4.3
4.7
5.1
5.6
6.2
6.8
7.5
Type No.
8.2
9.1
10
11
12
13
15
16
18
B
B
B
B
B
B
B
B
B
PTZ8.2B
PTZ9.1B
PTZ10B
PTZ11B
PTZ12B
PTZ13B
PTZ15B
PTZ16B
PTZ18B
B
B
B
B
B
B
B
B
B
PTZ20B
PTZ22B
PTZ24B
PTZ27B
PTZ30B
PTZ33B
PTZ36B
−
−
20
22
24
27
30
33
36
−
−
B
B
B
B
B
B
B
3.6B
9
C
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
Rev.A
1/4
5.0±0.3
PTZ Series
Diodes
Electrical characteristic curves
(Ta=25°C)
RISE IN DIODE A SURFACE TEMPERATURE (°C)
10mm
Glass epoxy substrate
32
×
30
×
1.6 (mm)
POWER DISSIPATION : Pd (mn)
1000
800
600
400
200
0
Ceramic substrate
82×30×1.0 (mm)
1.5W
A
A
1.0W
100
1.0W
100
0.5W
Individual part
(not mounted)
0.5W
Alumina substrate
114
×
124
×
1.6
0
25
50
87.5 100
150
200
0
1
(Units : mm)
10
MOUNTING QUANTITY (pcs/substrate)
100
0
Glass epoxy
substrate
144×220×1.6
(Units : mm)
1
10
100
AMBIENT TEMPERATURE : Ta (°C)
MOUNTING QUANTITY (pcs/substrate)
Fig.1 Derating curve
Fig.2 Rise in surface temperature
Fig.3 Rise in surface temperature
100m
3.6
3.9
4.3
4.7
5.1
5.6
6.2
6.8
7.5
8.2
9.1
10
11
12
13
15
16
18
20
22
24
27
30
33
36
ZENER CURRENT : I
Z
(A)
10m
1m
100µ
10µ
1µ
0
5
10
15
20
ZENER VOLTAGE : V
Z
(V)
25
30
35
40
Fig.4 Zener voltage characteristics
RISE IN DIODE A SURFACE TEMPERATURE (°C)
200
1.5W
A
1.0W
100
0.5W
0
Glass epoxy
substrate
144×220×1.6
(Units : mm)
1
10
100
MOUNTING QUANTITY (pcs/substrate)
Fig.3 Rise in surface temperature
10mm
Mounting position
15mm
Rev.A
3/4
10mm
Mounting position
15mm
RISE IN DIODE A SURFACE TEMPERATURE (°C)
1200
200
200
1.5W
Mounting position
15mm
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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