Datasheet
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
Switching Diode
1SS355
lApplication lDimensions (Unit : mm) 　lLand size figure (Unit : mm)
High speed switching
lFeatures
1) Ultra small mold type.
(UMD2)
2) High reliability.
　lStructure
lConstruction lTaping specifications (Unit : mm)
Silicon epitaxial planar
lAbsolute maximum ratings (Ta= 25°C)
Symbol Unit
Reverse voltage (repetitive peak)
VRM V
Reverse voltage (DC)
VRV
Forward current
IFM mA
Average rectified forward current Io mA
Surge current (t=1s)
Isurge mA
Junction temperature Tj °C
Storage temperature Tstg °C
Symbol Min. Typ. Max. Unit
Forward voltage
VF- - 1.2 V IF=100mA
Reverse current
IR- - 0.1 mAVR=80V
Capacitance between terminals Ct - - 3 pF
VR=0.5V, f=1MHz
Reverse recovery time trr - - 4 ns
Parameter
Limits
VR=6V, IF=10mA,RL=100W
Parameter
Conditions
-55 to +150
90
80
100
500
150
225
UMD2
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
2.1
0.8MIN.
0.9MIN.
dot (year week factory)
ROHM : UMD2
JEITA : SC-90/A
JEDEC : SOT-323
4.0±0.1
2.0±0.05
φ1.55±0.05
1.40±0.1
4.0±0.1
φ1.05
2.75
3.5±0.05
1.75±0.1
8.0±0.2
0.3±0.1
1.0±0.1
2.8±0.1
f1.05
f1.550.05
1/5
2013.11 - Rev.E
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
Data Sheet
1SS355
lElectrical characteristic curves
0.1
1
10
100
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2
Ta = 75°C
Ta = 25°C
Ta = 125°C
Ta = -25°C
0.01
0.1
1
10
100
1000
10000
010 20 30 40 50 60 70 80
Ta = 75°C
Ta = 25°C
Ta = 125°C
Ta = -25°C
0.1
1
10
010 20 30
f = 1MHz
FORWARD CURRENT : IF(mA)
FORWARD VOLTAGE : VF(V)
VF-IF CHARACTERISTICS
REVERSE CURRENT : IR(nA)
REVERSE VOLTAGE : VR(V)
VR-IR CHARACTERISTICS
CAPACITANCE BETWEEN
TERMINALS : Ct(pF)
REVERSE VOLTAGE : VR(V)
VR-Ct CHARACTERISTICS
FORWARD VOLTAGE : VF(mV)
VF DISPERSION MAP
860
870
880
890
900
910
AVE : 885.9mV
Ta=25°C
IF=100mA
n=30pcs
2/5
2013.11 - Rev.E
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
Data Sheet
1SS355
lElectrical characteristic curves
0
10
20
30
40
50
60
70
80
90
100
Ta=25°C
VR=80V
n=30pcs
AVE : 15.4nA
0.9
0.91
0.92
0.93
0.94
0.95
0.96
0.97
0.98
0.99
1
AVE : 0.961pF
Ta=25°C
f=1MHz
VR=0V
n=10pcs
0
5
10
15
20
AVE : 13.6A
0
0.5
1
1.5
2
2.5
3
AVE : 1.3ns
Ta=25°C
VR=6V
IF=10mA
RL=100W
REVERSE CURRENT : IR(nA)
IR DISPERSION MAP
CAPACITANCE BETWEEN
TERMINALS : Ct(pF)
Ct DISPERSION MAP
PEAK SURGE
FORWARD CURRENT : IFSM(A)
IFSM DISPERSION MAP
REVERSE RECOVERY TIME : trr(ns)
trr DISPERSION MAP
8.3ms
IFSM
1cyc.
3/5
2013.11 - Rev.E
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
Data Sheet
1SS355
lElectrical characteristic curves
0
5
10
15
20
110 100
1
10
100
110 100
1
10
100
1000
0.001 0.1 10 1000
Rth(j-a)
Rth(j-c)
0
0.0005
0.001
050 100
D = 1/2
DC
Sin(θ=180)
PEAK SURGE
FORWARD CURRENT : IFSM(A)
NUMBER OF CYCLES
IFSM-CYCLE CHARACTERISTICS
PEAK SURGE
FORWARD CURRENT : IFSM(A)
TIME : t(ms)
IFSM-t CHARACTERISTICS
TRANSIENT
THERMAL IMPEDANCE : Rth (°C/W)
TIME : t(s)
Rth-t CHARACTERISTICS
1cyc.
8.3ms
IFSM
8.3ms IFSM
time
1ms
IM=1mA IF=10A
300ms
time
Mounted on glass epoxy board
REVERSE POWER DISPERSION : PR (W)
REVERSE VOLTAGE : VR(V)
VR-PR CHARACTERISTICS
4/5
2013.11 - Rev.E
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
Data Sheet
1SS355
lElectrical characteristic curves
0
0.05
0.1
0.15
0.2
025 50 75 100 125 150
D = 1/2
DC
Sin(θ=180)
0.00
0.05
0.10
0.15
0.20
025 50 75 100 125 150
D = 1/2
DC
Sin(θ=180)
0
5
10
15
20
AVE : 9.4kV
AVE : 2.4kV
AVERAGE RECTIFIED
FORWARD CURRENT : Io(A)
AMBIENT TEMPERATURE : Ta(°C)
DERATING CURVE (Io-Ta)
AVERAGE RECTIFIED
FORWARD CURRENT : Io(A)
CASE TEMPERATURE : Tc(°C)
DERATING CURVE (Io-Tc)
ELECTROSTATIC
DISCHARGE TEST ESD(kV)
ESD DISPERSION MAP
C=100pF
R=1.5kW
C=200pF
R=0W
T Tj=150°C
D=t/T
t VR
Io
VR=40V
0A
0V
T Tj=150°C
D=t/T
t VR
Io
VR=40V
0A
0V
5/5
2013.11 - Rev.E
R1102
A
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
Notice
ROHM Customer Support System
http://www.rohm.com/contact/
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact us.
Notes
The information contained herein is subject to change without notice.
Before you use our Products, please contact our sales representative
and verify the latest specifica-
tions :
Although ROHM is continuously working to improve product reliability and quality, semicon-
ductors can break down and malfunction due to var ious factors.
Therefore, in order to prevent personal injury or fire arising from failure, please take safety
measures such as complying with the derating characteristics, implementing redundant and
fire prevention designs, and utilizing backups and fail-safe procedures. ROHM shall have no
responsibility for any damages arising out of the use of our Poducts beyond the rating specified by
ROHM.
Examples of application circuits, circuit constants and any other information contained herein are
provided only to illustrate the standard usage and operations of the Products. The peripheral
conditions must be taken into account when designing circuits for mass production.
The technical information specified herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly,
any license to use or exercise intellectual property or other rights held by ROHM or any other
parties. ROHM shall have no responsibility whatsoever for any dispute arising out of the use of
such technical information.
The Products are intended for use in general electronic equipment (i.e. AV/OA devices, communi-
cation, consumer systems, gaming/entertainment sets) as well as the applications indicated in
this document.
The Products specified in this document are not designed to be radiation tolerant.
For use of our Products in applications requiring a high degree of reliability (as exemplified
below), please contact and consult with a ROHM representative : transportation equipment (i.e.
cars, ships, trains), primary communication equipment, traffic lights, fire/crime prevention, safety
equipment, medical systems, servers, solar cells, and power transmission systems.
Do not use our Products in applications requiring extremely high reliability, such as aerospace
equipment, nuclear power control systems, and submarine repeaters.
ROHM shall have no responsibility for any damages or injury arising from non-compliance with
the recommended usage conditions and specifications contained herein.
ROHM has used reasonable care to ensur the accuracy of the information contained in this
document. However, ROHM does not warrants that such information is error-free, and ROHM
shall have no responsibility for any damages arising from any inaccuracy or misprint of such
information.
Please use the Products in accordance with any applicable environmental laws and regulations,
such as the RoHS Directive. For more details, including RoHS compatibility, please contact a
ROHM sales office. ROHM shall have no responsibility for any damages or losses resulting
non-compliance with any applicable laws or regulations.
When providing our Products and technologies contained in this document to other countries,
you must abide by the procedures and provisions stipulated in all applicable export laws and
regulations, including without limitation the US Export Administration Regulations and the Foreign
Exchange and Foreign Trade Act.
This document, in part or in whole, may not be reprinted or reproduced without prior consent of
ROHM.
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
11)
12)
13)
14)