Notice
1.
All information included in this document is current as of the date this document is issued. Such information, however, is
subject to change without any prior notice. Before purchasing or using any Renesas Electronics products listed herein, please
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You should not alter, modify, copy, or otherwise misappropriate any Renesas Electronics product, whether in whole or in part.
Descriptions of circuits, software and other related information in this document are provided only to illustrate the operation of
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and information in the design of your equipment. Renesas Electronics assumes no responsibility for any losses incurred by
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Renesas Electronics has used reasonable care in preparing the information included in this document, but Renesas Electronics
does not warrant that such information is error free. Renesas Electronics assumes no liability whatsoever for any damages
incurred by you resulting from errors in or omissions from the information included herein.
Renesas Electronics products are classified according to the following three quality grades: “Standard”, “High Quality”, and
“Specific”. The recommended applications for each Renesas Electronics product depends on the product’s quality grade, as
indicated below. You must check the quality grade of each Renesas Electronics product before using it in a particular
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consent of Renesas Electronics. The quality grade of each Renesas Electronics product is “Standard” unless otherwise
expressly specified in a Renesas Electronics data sheets or data books, etc.
Computers; office equipment; communications equipment; test and measurement equipment; audio and visual
equipment; home electronic appliances; machine tools; personal electronic equipment; and industrial robots.
“High Quality”: Transportation equipment (automobiles, trains, ships, etc.); traffic control systems; anti-disaster systems; anti-
crime systems; safety equipment; and medical equipment not specifically designed for life support.
“Specific”:
Aircraft; aerospace equipment; submersible repeaters; nuclear reactor control systems; medical equipment or
systems for life support (e.g. artificial life support devices or systems), surgical implantations, or healthcare
intervention (e.g. excision, etc.), and any other applications or purposes that pose a direct threat to human life.
You should use the Renesas Electronics products described in this document within the range specified by Renesas Electronics,
especially with respect to the maximum rating, operating supply voltage range, movement power voltage range, heat radiation
characteristics, installation and other product characteristics. Renesas Electronics shall have no liability for malfunctions or
damages arising out of the use of Renesas Electronics products beyond such specified ranges.
Although Renesas Electronics endeavors to improve the quality and reliability of its products, semiconductor products have
specific characteristics such as the occurrence of failure at a certain rate and malfunctions under certain use conditions. Further,
Renesas Electronics products are not subject to radiation resistance design. Please be sure to implement safety measures to
guard them against the possibility of physical injury, and injury or damage caused by fire in the event of the failure of a
Renesas Electronics product, such as safety design for hardware and software including but not limited to redundancy, fire
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the evaluation of microcomputer software alone is very difficult, please evaluate the safety of the final products or system
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Please contact a Renesas Electronics sales office for details as to environmental matters such as the environmental
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This document may not be reproduced or duplicated, in any form, in whole or in part, without prior written consent of Renesas
Electronics.
Please contact a Renesas Electronics sales office if you have any questions regarding the information contained in this
document or Renesas Electronics products, or if you have any other inquiries.
“Standard”:
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
(Note 1) “Renesas Electronics” as used in this document means Renesas Electronics Corporation and also includes its majority-
owned subsidiaries.
(Note 2) “Renesas Electronics product(s)” means any product developed or manufactured by or for Renesas Electronics.
DATA SHEET
RD2.0E to RD120E
500 mW PLANAR TYPE SILICON ZENER DIODES
ZENER DIODES
DESCRIPTION
These products are zener diodes with an allowable
dissipation of 500 mW and a planar type glass sealed DHD
(double heatsink diode) structure.
PACKAGE DRAWING (Unit: mm)
φ
0.5
25 MIN.
Cathode
indication
• The zener voltage series has a wide voltage range of 2 to
120 V and is ideal for standardization.
• The E24 series is employed for the zener voltage nominal
value.
φ
2.0 MAX.
25 MIN.
ORDERING INFORMATION
Any of the B1 to B7 voltage classifications are available for
customers who request the B grade product of the RD2.0E to
RD39E.
Marking color: Black
JEDEC: DO-35
APPLICATIONS
• Zener voltage and constant-current circuit
• Waveform clipper circuit and limiter circuit
• Surge absorption circuit
ABSOLUTE MAXIMUM RATINGS (T
A
= 25°C)
Parameter
Power dissipation
Junction temperature
Forward current
Storage temperature
Surge reverse power
P
T
i
I
F
T
stg
P
RSM
Symbol
Ratings
500
175
200
−65
to +175
100 (t = 100
µ
s)
Unit
mW
°C
mA
°C
W
Refer to Figure 6.
Remarks
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 products and/or types are available in every country. Please check with an NEC Electronics
sales representative for availability and additional information.
Document No. D10211EJ6V1DS00 (6th edition)
Date Published December 2004 NS CP(K)
Printed in Japan
The mark
shows major revised points.
4.2 MAX.
FEATURES
2002
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