RB721Q-40
Diodes
Schottky barrier diode
RB721Q-40
!
Applications
High speed switching
!
External dimensions
(Units : mm)
CATHODE BAND (BLACK)
!
Features
1) Glass-sealed envelope for high reliability. (MSD)
2) Small pitch enables insertion on PCBs.
3) Low V
F
and low I
R
.
φ0.4±0.1
29±1
2.7±0.3
29±1
φ1.8±0.2
!
Construction
Silicon epitaxial planar
ROHM : MSD
EIAJ :
−
JEDEC : DO-34
S
Product identification number
2
−
is stamped on body of main unit.
!
Absolute maximum ratings
(Ta=25°C)
Parameter
Peak reverse voltage
DC reverse voltage
Mean rectifying current
Peak forward surge current
∗
Junction temperature
Storage temperature
∗
60 Hz for 1
Symbol
V
RM
V
R
I
O
I
FSM
Tj
Tstg
Limits
40
40
30
200
125
−40~+125
Unit
V
V
mA
mA
°C
°C
!
Electrical characteristics
(Ta=25°C)
Parameter
Forward voltage
Reverse current
Capacitance between terminals
Note) ESD sensitive product handling required.
Symbol
V
F
I
R
C
T
Min.
−
−
−
Typ.
−
−
2.0
Max.
0.37
0.5
−
Unit
V
µA
pF
I
F
=1mA
V
R
=25V
Conditions
V
R
=1V, f=1MHz
RB721Q-40
Diodes
!
Electrical characteristic curves
(Ta=25°C)
100m
FORWARD CURRENT : I
F
(A)
Typ.
pulse measurement
REVERSE CURRENT : I
R
(A)
100µ
CAPACITANCE BETWEEN TERMINALS : C
T
(pF)
Typ.
pulse measurement
°
C
Ta=100
Ta=75
°
C
100
10m
10µ
10
1m
1µ
Ta=50
°C
100µ
Ta
=50
°
=2
5
°
C
C
100n
5
°
C
Ta=25
°
C
1
=7
Ta=
0
°
C
Ta=
−
40
°
C
Ta
Ta
10µ
10n
1µ
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
1n
0
5
10
15
20
25
30
35
0.1
0
5
10
15
20
25
FORWARD VOLTAGE : V
F
(V)
REVERSE VOLTAGE : V
R
(V)
REVERSE VOLTAGE : V
R
(V)
Fig.1 Forward characteristics
Fig.2 Reverse characteristics
Fig.3 Capacitance between
terminals characteristics
10
REVERSE RECOVERY TIME : t
rr
(ns)
5
I
R
=10mA
I
rr
=1mA
100
Io CURRENT (%)
2
1
0.5
80
60
40
20
0
0
0.2
0.1
0
10
20
30
25
50
75
100
125
FORWARD CURRENT : I
F
(mA)
AMBIENT TEMPERATURE : Ta (°C)
Fig.4 Reverse recovery time
characteristics
Fig.5 Derating curve
(mounting on glass epoxy PCBs)
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document use silicon as a basic material.
Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.0
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