JULY 12, 2005
Vol.191
MRJ SBD Series of Schottky Barrier Diodes Developed
With low VF, low IR and a guaranteed Tj=150
°
C,
we have realized- high-temperature performance
SANYO Electric Co., Ltd. has developed the MRJ SBD series of Schottky Barrier Diodes.
By optimizing its unique microfabrication technology and withstand-voltage design, SANYO has
achieved both a low forward voltage (VF) and a low leakage current (IR) for these diodes. We have
also ensured that the diodes will operate under high temperatures by guaranteeing a junction
temperature of 150°C. Sample shipments are scheduled to begin in July.
SBJ100-04J, SBJ100-06J, SBJ200-04J, SBJ200-06J, SBJ300-04J, SBJ300-06J,
SBJ400-04J, SBJ400-06J Series
Overview
Although the time for conserving energy is ripe as the world confronts the problem of the depletion of
energy resources on a global scale, electronic products are advancing down the road toward more
sophisticated functions and increased functionality, and tend to consume more, rather than less, power.
The rectifying devices mounted in the power supplies, adapters, and other areas of these electronic
products must meet the following requirements: a low forward voltage (VF), low leakage current (IR),
high-speed switching and high-temperature guarantees, if their efficiency is to be increased.
Generally, Schottky Barrier Diodes (SBD) are widely used as rectifying devices for the secondary
sides of power supplies owing to their low VF and high-speed switching characteristics. However,
regular SBDs have faced a trade-off between their VF and IR characteristics, and until now it has been
difficult to achieve both low VF and low IR. Common SBDs with a low VF have a high IR, so when
they are used in high-temperature environments, such as in adapters where high-density mounting can
be expected, there is the possibility that thermal runaway may occur, and it is in environments such as
these that the need for SBDs with a low IR has arisen.
With a view to meeting the need for low VF, low IR and high-speed switching, SANYO has
developed the MRJ SBD (Multi Refined PN Junction SBD) series of SBDs, with a new structure.
With the advent of this series, SANYO has achieved the lowest VF and IR in the industry by
optimizing its unique microfabrication technology and withstand voltage design. Compared with the
company's previous SBDs, the ones in this new series feature lower VF, equivalent switching
characteristics, and a IR that is ten times lower. These features can contribute to improving.
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the efficiency of electronic equipment and conserving energy, and by guaranteeing a junction tempera-
ture (Tj) of 150°C over and above the low IR at high temperatures, these SBDs can be used in high-
temperature environments. Moreover, by optimizing the guard ring structure, they can now withstand
higher ESD levels.
More specifically, a comparison of the power loss between the MRJ SBD series and the company's
existing products conducted on SANYO's demonstration boards has shown that the new SBDs are
capable of decreasing the power loss by 6.3% in environments where the temperature (Tc) is 125°C or
higher a level that causes thermal runaway in the existing products.
The first model scheduled for mass production and marketing in the summer of 2005 is an SBD with a
40 V withstand voltage, 10 A rated current and TO-220ML package (TO220AB) for use in adapters.
These products feature a VF of 0.48 V typ., which is the lowest in their class, and achieve both a low
VF and a low IR of 8µA typ. (Ta=25°C; 100µA for existing products), and with a low IR at high
temperatures and by guaranteeing a junction temperature (Tj) of 150°C, they can be expected to
operate stably in high-temperature environments.
A total of seven models with a 40 V withstand voltage and 20 A, 30 A or 40 A rated current or a 60 V
withstand voltage and 10 A, 20 A, 30 A or 40 A rated current will be made available in the series, and
SANYO aims to successively configure a line up of products tailored to different applications. In
order to exploit fully the low IR featured by the MRJ SBD series, the company also plans to develop
an MRJ SBD series with a high withstand voltage.
In the past, SANYO Electric has expanded its high-performance SBDs with withstand voltages rang-
ing from 5 V to 180 V and rated currents ranging from 10 mA to 35 A into many and varied packages
to meet the needs of its customers. With its new MRJ SBD series, it can satisfy even further the re-
quirements of its customers for low VF and low IR, high-speed switching characteristics and a high-
temperature guarantee. By pushing ahead with the development of products that respond to customer
needs to make products in smaller sizes and with features such as easier portability and greater energy
savings, SANYO will continue to meet the expectations of its customers and win their trust.
Features
• Low VF and IR, constituting the highest performance in the industry, achieved
- In the 40 V/10 A class, SANYO's new SBDs achieve the lowest VF of 0.48 V typ.
(at IF=5 A) and IR of 8µA typ. (at VR=40 V). These levels are the lowest in the industry.
(The figures denote the respective values per device.)
• High-temperature operation
- The low IR at high temperatures and Tj=150°C guarantee enable the SBDs to operate in
high-temperature environments.
• High-ESD tolerance
- The MRJ structure increases the ability of the SBDs to withstand higher ESD levels.
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Specifications
Absolute maximum ratings
Type No.
Package
VRRM
(V)
IO
(A)
10
20
40
TO-220ML
60
30
40
10
20
30
40
150
150
Tj
(
°
C)
5
10
15
20
5
10
15
20
0.6
30
0.54
20
Electrical characteristics (figures denote the respective values per device)
VF(V) max
IF(A)
VR(V)
IR1(µA)
typ
5
10
15
20
5
10
15
20
max
50
100
150
200
50
100
150
200
60
40
VR(V)
IR2(µA)
typ
8
20
30
40
10
20
30
40
max
100
200
300
400
100
200
300
400
SBJ100-04J
SBJ200-04J
SBJ300-04J
SBJ400-04J
SBJ100-06J
SBJ200-06J
SBJ300-06J
SBJ400-06J
Sample Availability
The MRJ SBD series will be available in sample quantities in July 2005 and in production quantities
in the third quarter of 2005.
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s
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
s
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
s
Specifications of any and all SANYO products described or contained herein stipulate the performance,
characteristics, and functions of the described products in the independent state, and are not guarantees
of the performance, characteristics, and functions of the described products as mounted in the customer’s
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer’s products or equipment.
s
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.
s
In the event that any or all SANYO products (including technical data, services) described or contained
herein are controlled under any of applicable local export control laws and regulations, such products must
not be exported without obtaining the export license from the authorities concerned in accordance with the
above law.
s
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co., Ltd.
s
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the “Delivery Specification”
for the SANYO product that you intend to use.
s
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not
guaranteed for volume production. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.
PS.D3005/191
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