Data Sheet
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© 2015 ROHM Co., Ltd. All rights reserved.
Schottky Barrier Diode
RB551VM-40
lApplication lDimensions (Unit : mm) lLand size figure (Unit : mm)
Small current rectification
lFeatures
1) Small mold type (UMD2)
2) High reliability
3)
Super low VF
lStructure
lConstruction
Silicon epitaxial planar type
lTaping specifications (Unit : mm)
lAbsolute Maximum Ratings (Tc= 25°C)
Repetitive peak reverse voltage
VRM V
Reverse voltage
VRV
Operating junction temperature
Tj°C
Storage temperature
Tstg °C
lElectrical Characteristics (Tj= 25°C)
Symbol Min. Typ. Max. Unit
VF- - 0.43 V
IR1 - - 80 mA
IR2 - - 300 mA
mA
resistive load
Non-repetitive forward current surge peak
IFSM
60Hz half sin wave, Non-repetitive at
1
A
Ta=25ºC , 1cycle
Average forward rectified current
Io
Glass epoxy board mounted, 60Hz half sin wave,
Unit
Duty≦0.5
40
Direct reverse voltage
40
Reverse current
Parameter
Symbol
Conditions
Limits
200
Parameter
Conditions
-
IF=200mA
Forward voltage
VR=40V
125
-
-55 to +125
VR=10V
ROHM : UMD2
JEITA : SC-90/A
: Manufacture date
JEDEC :SOD-323
(2) Anode
(1) Cathode
0.9
0.8
2.1
UMD2
(1)
(2)
1.0 +0.2
-0
5.5±0.2
0.25±0.05
1.5 MAX
3.5±0.05
4.0±0.1
2.8±0.1
2.0±0.05
1.75±0.1
4.0±0.1
8.0±0.2
1.4 +0.1
-0.05
1.5 +0.1
-0
0.3±0.05
0.7±0.2
0.1
0.1±0.1
0.05
1.7±0.1
2.5±0.2
1.25±0.1
1/4
2015.10 - Rev.A
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© 2015 ROHM Co., Ltd. All rights reserved.
Data Sheet
RB551VM-40
lElectrical Characteristic Curves
FORWARD CURRENT : IF (mA)
FORWARD VOLTAGE : VF(mV)
VF-IF CHARACTERISTICS
REVERSE CURRENT : IR (mA)
REVERSE VOLTAGE : VR(V)
VR-IR CHARACTERISTICS
AVERAGE RECTIFIED
FORWARD CURRENT : Io (mA)
Io-PF CHARACTERISTICS
FORWARD POWER
DISSIPATION : PF (W)
REVERSE VOLTAGE : VR (V)
VR-PR CHARACTERISTICS
REVERSE POWER
DISSIPATION : PR (mW)
0.1
1
10
100
1000
10000
100000
010 20 30 40
Tj = 25°C
Tj = -25°C
Tj = 75°C
Tj = 125°C
0.1
1
10
100
1000
0 100 200 300 400 500 600 700 800 900
Tj = 75°C
Tj = 25°C
Tj = 125°C
Tj = -25°C
0
200
400
600
800
1000
010 20 30 40
D = 1/2
DC
Sin(θ=180)
Tj = 125°C
0.00
0.02
0.04
0.06
0.08
0.10
0.12
0.14
050 100 150 200 250 300 350
D = 1/2
DC
Sin(θ=180)
Tj = 125°C
2/4
2015.10 - Rev.A
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© 2015 ROHM Co., Ltd. All rights reserved.
Data Sheet
RB551VM-40
lElectrical Characteristic Curves
0
100
200
300
400
500
025 50 75 100 125
D = 1/2
DC
Sin(θ=180)
0
100
200
300
400
500
025 50 75 100 125
D = 1/2
DC
Sin(θ=180)
1
10
100
0 5 10 15 20 25 30
Tj = 25°C
f = 1MHz
10
100
1000
0.001 0.01 0.1 1 10 100 1000
Rth(j-c)
Rth(j-a)
AVERAGE RECTIFIED
FORWARD CURRENT : Io (mA)
AMBIENT TEMPERATURE : Ta (°C)
DERATING CURVE (Io-Ta)
Tj=125°C
D=t/T
VR=VRM/2
T
t
0A
0V
IO
VR
Glass epoxy board mounted
AVERAGE RECTIFIED
FORWARD CURRENT : Io (mA)
CASE TEMPERATURE : Tc (°C)
DERATING CURVE (Io-Tc)
Tj=125°C
D=t/T
VR=VRM/2
T
t
0A
0V
IO
VR
Glass epoxy board mounted
CAPACITANCE BETWEEN
TERMINALS : Ct (pF)
REVERSE VOLTAGE : VR(V)
VR-Ct CHARACTERISTICS
TRANSIENT
THERMAL IMPEDANCE : Rth (°C/W)
TIME : t (s)
Rth-t CHARACTERISTICS
1ms
IM=10mA IF=0.3A
300ms
time
Glass epoxy board mounted
3/4
2015.10 - Rev.A
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
Data Sheet
RB551VM-40
lElectrical Characteristic Curves
1
10
110 100
1
10
110 100
PEAK SURGE
FORWARD CURRENT : IFSM (A)
NUMBER OF CYCLES
IFSM-CYCLE CHARACTERISTICS
PEAK SURGE
FORWARD CURRENT : IFSM (A)
TIME : t (ms)
IFSM-t CHARACTERISTICS
IFSM time
Ta=25°C
1cyc
8.3
IFSM
1cyc
ms 8.3
ms
Ta=25°C
4/4
2015.10 - Rev.A
Datasheet
Datasheet
Notice-PGA-E Rev.001
© 2015 ROHM Co., Ltd. All rights reserved.
Notice
Precaution on using ROHM Products
1. Our Products are designed and manufactured for applicatio n in ordinar y elec tronic eq uipm ents (such as AV equipment ,
OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you
intend to use our Products in devices requiring extremely high reliability (such as medical equipment (Note 1), transport
equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car
accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or
serious damage to property (“Specific Applications”), please consult with the ROHM sales representative in advance.
Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any
damages, expenses or losses incurred b y you or third parties arisin g from the use of an y ROHM’s Prod ucts for Specific
Applications.
(Note1) Medical Equipment Classification of the Specific Applications
JAPAN USA EU CHINA
CLASSⅢ CLASSⅢ CLASSⅡb CLASSⅢ
CLASSⅣ CLASSⅢ
2. ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor
products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate
safety measures including but not limited to fail-safe d esign against the physical injur y, damage to any property, which
a failure or malfunction of our Products may cause. T he following are examples of safety measures:
[a] Installation of protection circuits or other protective devices to improve system safety
[b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure
3. Our Products are designed and manufactured for use under standard conditions and not under any special or
extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way
responsible or liable for any damages, expenses or losses arising from the use of any ROHM’s Products under any
special or extraordinary environments or conditions. If you intend to use our Products under any special or
extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of
product performance, reliabili ty, etc, prior to use, must be necessary:
[a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents
[b] Use of our Products outdoors or in places where the Products are exposed to direct sunlig ht or dust
[c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2,
H2S, NH3, SO2, and NO2
[d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves
[e] Use of our Products in proximity to heat-producing comp onents, plastic cords, or other flammable items
[f] Sealing or coating our Products with resin or other coating materials
[g] Use of our Products without cleaning residue of flu x (even if you use no-clean type fluxes, cleaning residue of
flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning
residue after soldering
[h] Use of the Products in places subject to dew condensation
4. The Products are not subject to radi ation-proof design.
5. Please verify and confirm ch aracteristics of the final or mounted products in using the Products.
6. In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied,
confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power
exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect
product performance and reliability.
7. De-rate Po wer Dissipation (P d) depe nding on Ambient temperature (T a). When us ed in sealed area, confirm the actual
ambient temperature.
8. Confirm that operation temperature is within the specified range described in the product specification.
9. ROHM shall not be in any way responsible or liable for failure induced under deviant co ndition from what is defined in
this document.
Precaution for Mounting / Circuit board design
1. When a highly active halogen ous (chlori ne, bromine, etc.) flu x is used, the residue of flux may negativel y affect product
performance and reliability.
2. In principle, the reflow soldering method must be used on a surface-mount products, the flow soldering method must
be used on a through hole mount products. If the flow soldering method is preferred on a surface-mount products,
please consult with the ROHM represe ntative in advance.
For details, please refer to ROHM Mounting specification
Datasheet
Datasheet
Notice-PGA-E Rev.001
© 2015 ROHM Co., Ltd. All rights reserved.
Precautions Regarding Application Examples and External Circuits
1. If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the
characteristics of the Products and external components, including transient characteristics, as well as static
characteristics.
2. You agree that application notes, reference designs, and associated data and information contained in this document
are presented only as guidance for Products use. Therefore, in case you use such information, you are solely
responsible for it and you must exercise you r own indepen dent verificatio n and judgmen t in the use of such information
contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses
incurred by you or third parties arising from the use of such information.
Precaution for Electrostatic
This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper
caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be
applied to Products. Please t ake special care under dry condit ion (e.g. Grounding of human body / equipment / sol der iron,
isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control).
Precaution for Storage / Transportati on
1. Product performance and soldered connections may deteriorate if the Products are stored in the pl aces where:
[a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2
[b] the temperature or humidity exceeds those recommende d b y ROHM
[c] the Products are exposed to direct sunshine or condensation
[d] the Products are exposed to high Electrostatic
2. Even under ROHM recommended storage condition, solderabilit y of products out of recommended storage time period
may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is
exceeding the recommen de d storage time period.
3. Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads
may occur due to excessive s t ress applied when dropping of a carton.
4. Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Pr oducts of
which storage time is exceeding the recommended storage time period.
Precaution for Product Label
QR code printed on ROHM Products label is for ROHM’s internal use only.
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When disposing Products pl ease dispose them properly using an auth orized industry waste company.
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Since concerned goods might be fallen under listed items of export control prescribed by Foreign exchange and Foreign
trade act, please consult with ROHM in case of export.
Precaution Regarding Intellectual Property Rights
1. All information and data including but not limited to application example contained in this document is for reference
only. ROHM does not warrant that foregoi ng information or data will not infringe any int ellectual property rights or any
other rights of any third party regarding such information or data.
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Other Precaution
1. This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM.
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consent of ROHM.
3. In no event shall you use in any way whatsoever the Products and the related technical information contained in the
Products or this document for any military purposes, including b ut not limited to, the development of mass-destruction
weapons.
4. The proper names of companies or products described in this document are trademarks or registered trademarks of
ROHM, its affiliated companies or third parties.
DatasheetDatasheet
Notice – WE Rev.001
© 2015 ROHM Co., Ltd. All rights reserved.
General Precaution
1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents.
ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny
ROHM’s Products against warning, caution or note contained in this document.
2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior
notice. Before purchasing or using ROHM’s Products, please confirm the la test information with a ROHM sale s
representative.
3. The information contained in this doc ument is provi ded on an “as is” basis and ROHM does not warrant that all
information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or
liable for any damages, expenses or losses incurred b y you or third parties resulting from inaccuracy or errors of or
concerning such information.
