400 mW DHD ZENER DIODE
(DO-34)
DESCRIPTION
NEC Type RD2.0ES to RD39ES Series are planar type diodes into DO-34
Package (Body length 2.4 mm MAX.) with DHD (Double Heatsink Diode)
construction having allowable power dissipation of 400 mW.
FEATURES
DO-34 Glass sealed package
This diode can be inserted into a PC board with a shorter pitch (5 mm)
Planar process
DHD (Double Heatsink Diode) construction
V
Z
Applied E24 standard
ORDERING INFORMATION
RD2.0ES to RD39ES with suffix "AB1", "AB2", or "AB3" should be applied
for orders for suffix "AB".
APPLICATIONS
Circuits for Constant Voltage, Constant Current, Waveform clipper, Surge absorber, etc.
ABSOLUTE MAXIMUM RATINGS (T
A
= 25
C)
Forward Current
I
F
150 mA
Power Dissipation
P
400 mW
to see Fig. 6
Surge Reverse Power
P
RSM
100 W (t = 10
s)
to see Fig. 10
Junction Temperature
T
j
175
C
Storage Temperature
T
stg
65 to +175
C
ZENER DIODES
RD2.0ES to RD39ES
Document No. D13935EJ6V0DS00 (6th edition)
(Previous No. DC-2140)
Date Published March 1999 N CP(K)
Printed in Japan
1984
DATA SHEET
0.4
Cathode
indication
2.0 MAX.
25 MIN.
25 MIN.
2.4 MAX.
DO-34 (JEDEC)
Marking color: Black
PACKAGE DIMENSIONS
(in millimeters)
5 mm
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for availability
and additional information.
5
RD2.0ES to RD39ES
Data Sheet D13935EJ6V0DS00
Fig. 6
POWER DISSIPATION vs.
AMBIENT TEMPERATURE
Fig. 7
THERMAL RESISTANCE vs.
SIZE OF P.C BOARD
Fig. 8
DYNAMIC IMPEDANCE vs.
ZENER CURRENT
Fig. 9
ZENER VOLTAGE TEMPERATURE
COEFFICIENT vs. ZENER VOLTAGE
Fig. 10 SURGE REVERSE POWER RATINGS
0.08
0.06
0.04
0.02
0
0.02
0.04
0.06
32
0.1
TYP.
40
24
16
8
0
8
16
24
0.08
32
0.1
40
8
4
12
16
20
Z
V
Z
Temperature Coefficience %/
C
Z
V
Z
Temperature Coefficience mV/
C
24
28
32
36
40
mV/
C
RD2.0ES to RD39ES
%/
C
V
Z
Zener Voltage V
44
0
500
400
300
200
100
0
20
40
60
80
100
T
A
Ambient Temperature
C
P Power Dissipation mW
120 140 160 180 200
= 5 mm
= 10 mm
7 mm P.C. Board
t = 0.035 mm
= 5 mm
= 10 mm
= 3 mm
= 3 mm
3 mm P.C. Board
t = 0.035 mm
500
400
300
200
100
0
20
40
S Size of P.C. Board mm
2
R
th
Thermal Resistance
C/W
60
80
100
= 10 mm
= 5mm
= 3mm
S
Junction to ambient
1000
100
10
TYP.
1
0.01
0.1
I
Z
Zener Current mA
Z
Z
Dynamic Impedance
10
1
100
RD3.3ES
RD15ES
RD39ES
RD20ES
RD5.6ES
RD10ES
RD7.5ES
RD5.1ES
RD2.0ES
RD3.9ES
RD4.7ES
1000
T
A
=25
C
Non-Repetitive
t
T
P
RSM
100
10
1
1
10
100 m
100
1 m
10 m
t
T
Pulse Width s
P
RSM
Surge Reverse Power W
2
RD2.0ES to RD39ES
[MEMO]
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confirm that this is the latest version.
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M7 98.8