Data Sheet
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© 2011 ROHM Co., Ltd. All rights reserved.
1/4 2011.11 - Rev.A
Bi direct io n ESD Protect ion Diod e
RSB33F2FH
Applications Dimensions (Unit : m m) Land size figure (Unit : mm)
ESD Protection
Features
1)Small mold type. (UMD3)
2)High reliability.
3)Bi-directionality.
Constructions
Silicon epitaxial planer Structure
Absolute maximum ratings (Ta=25°C)
Symbol Unit
Pd mW
Tj °C
Tstg °C
Electrical characteristics (Ta=25°C)
Symbol Min. Typ. Max. Unit Conditions
Zener voltage VZ29.7 -36.3 VIZ=1mA
Reverse current IR- - 0.1 μＡVR=25V
Ct - - 30 pF VR=0V , f=1MHz
*Zener voltage (Vz) shall be measured at 40ms after loading current.
Junction capacitance
Taping dimensions (Unit : mm)
Parameter Limits
Power dissipation(*) 200
Junction temperature 150
Storage temperature −55 to +150
(*)Total two elements
Parameter
ROHM : UMD3
JEITA : SC-70
JEDEC : SOT-323
dot(year week factory)
UMD3
0.9MIN.
0.8MIN.
1.6
0.65
1.3
4.0±0.1
4.0±0.1 2.0±0.05 φ1.55±0.05
3.5±0.05 1.75±0.1
8.0±0.2
φ0.5±0.05
2.4±0.1
2.25±0.1
0
5.5±0.2
1.25±0.1
2.4±0.1
0.3±0.1
0～0.1
2.0±0.2
2.1±0.1
1.25±0.1
0.3±0.1
各リードとも
同寸法
(3)
1.3±0.1
（0.65） （0.65）
(2) (1)
0.15±0.05
0.9±0.1
0.7±0.1
0.1Min
0～0.1
Each lead has same dimension
AEC-Q101 Qualified
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© 2011 ROHM Co., Ltd. All rights reserved.
Data Sheet
RSB33F2FH
2/4 2011.11 - Rev.A
0.01
0.1
1
10
25 30 35 40 45
ZENER CURRENT:Iz(mA)
ZENER VOLTAGE:Vz(V)
Vz-Iz CHARACTERISTICS(1)
Ta=−25°C Ta=125°C
Ta=75°C
Ta=25°C Ta=150°C
apply voltage
0.01
0.1
1
10
25 30 35 40 45
ZENER CURRENT:Iz(mA)
ZENER VOLTAGE:Vz(V)
Vz-Iz CHARACTERISTICS(2)
Ta=−25°C
Ta=125°C
Ta=75°C
Ta=25°C
Ta=150°C
apply voltage
0.001
0.01
0.1
1
10
100
1000
0 5 10 15 20 25 30
Ta=125°C
Ta=25°C
Ta=75°C
REVERSE CURRENT:IR (nA)
REVERSE VOLT AGE：VR(V)
VR-IR CHARACTERISTICS(1)
Ta=150°C
apply voltage
0.001
0.01
0.1
1
10
100
1000
0 5 10 15 20 25 30
REVERSE CURRENT:IR (nA)
REVERSE VOLT AGE：VR(V)
V
R
-I
R
CHARACTERISTICS(2)
Ta=125°C
Ta=25°C
Ta=75°C
Ta=150°C
apply voltage
1
10
100
0 5 10 15 20 25
CAPACITANC E BETWEEN
TERMINALS:Ct(pF)
REVERSE VOLT AGE:VR(V)
V
R
-Ct CHARACTERISTICS(1)
f=1MHz
apply voltage
1
10
100
0 5 10 15 20 25
CAPACITANC E BETWEEN
TERMINALS:Ct(pF)
REVERSE VOLT AGE:VR(V)
V
R
-Ct CHARACTERISTICS(2)
f=1MHz
apply voltage
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© 2011 ROHM Co., Ltd. All rights reserved.
Data Sheet
RSB33F2FH
3/4 2011.11 - Rev.A
20
22
24
26
28
30
32
34
36
38
40
ZENER VOLTAGE:Vz(V)
Ta=25°C
IZ=1mA
n=30pcs
AVE:32.73V
Vz DISPERSION MAP
AVE:34.52V
apply voltage apply voltage
0
1
2
3
4
5
6
7
8
9
10
REVERSE CURRENT:IR(nA)
Ta=25°C
VR=25V
n=30pcs
AVE:0.39nA
IR DISPERSION MAP
AVE:1.38nA
apply voltage apply voltage
0
1
2
3
4
5
6
7
8
9
10
CAPACITANCE BETWEEN TERMINALS:Ct(pF)
Ta=25°C
f=1MHz
VR=0V
n=20pcs
Ct DISPERSI ON MAP
AVE：9.07pF
AVE
：
8.86pF
apply voltage apply voltage
1
10
100
1000
10000
0.1 110
DYNAMIC IMPEDANCE: Zz (Ω)
ZENER CURRENT(mA)
Zz-Iz CHARACTERISTICS(1)
apply voltage
1
10
100
1000
10000
0.1 110
DYNAMIC IMPEDANCE: Zz (Ω)
ZENER CURRENT(mA)
Zz-Iz CHARACTERISTICS(2)
apply voltage
1
10
100
1000
0.001 0.01 0.1 110 100 1000
TRANSIENT
THERMAL IMPEDANCE：Rth(°C/W)
Rth(j-a)
Rth(j-c)
On glass-epoxy substrate
TIME(s)
Rth-t CHARACTERISTICS
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© 2011 ROHM Co., Ltd. All rights reserved.
Data Sheet
RSB33F2FH
4/4 2011.11 - Rev.A
0
5
10
15
20
25
30
AVE：26.5kV
No break at 30kV
C=200pF
R=0Ω C=150pF
R=330Ω C=100pF
R=1.5kΩ
AVE：6.3kV
ELECTROSTATIC
DISCHARGE TEST ESD [kV]
ESD DISPERSIO N MAP(1 )
apply voltage
0
5
10
15
20
25
30
No break at 30kV
C=200pF
R=0Ω C=150pF
R=330Ω C=100pF
R=1.5kΩ
AVE：8.90kV
ELECTROSTATIC
DISCHARGE TEST ESD [kV]
ESD DISPERSIO N MAP(2 )
apply voltage
Datasheet
Datasheet
Notice-PAA-E Rev.001
© 2015 ROHM Co., Ltd. All rights reserved.
Notice
Precaution on using ROHM Products
1. If you intend to use our Products in devices requiring extremely high reliability (such as medical equipment (Note 1),
aircraft/spacecraft, nuclear power controllers, 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 arising from the use of an y
ROHM’s Products 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 not designed 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, expens es or losses arising from the
use of any ROHM’s Products under an y special or extraordinary envir onments 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 perfor mance, reliability, 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 radiation-proof design.
5. Please verify and confirm characteristics of the final or mounted products in using the Pro ducts.
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 specificati on.
9. ROHM shall not be in any way r esponsible or liable for failure induced under dev iant condition from what is defined in
this document.
Precaution for Mounting / Circuit board design
1. When a highly active halog enous (chlor ine, bromine, etc.) flux is used, the residue of flux ma y negatively 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-PAA-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 verificati on and judgme nt in the use of such information
contained in this document. ROHM shall n ot 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 a nd soldered connections may deteriorate if the Products are store d in the places 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 recommended by 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, solderabil ity of products out of recommended storage time perio d
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 r equired before using Products 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.
Precaution for Disposition
When disposing Products pl ease dispose them properly using an auth orized industry waste company.
Precaution for Foreign Exchange and Foreign Trade act
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.
2. ROHM shall not have any obligations where the claims, actions or demands arising from the combination of the
Products with other articles such as components, circuits, systems or external equipment (including software).
3. No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any
third parties with respect to the Products or the information contained i n this document. Provide d, however, that ROHM
will not assert its intellectual property rights or other rights against you or your customers to the extent necessary to
manufacture or sell products containing the Products, subject to the terms and conditions herein.
Other Precaution
1. This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM.
2. The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written
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.
