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RB481K
Diodes
Schottky barrier diode
RB481K
Applications Low current rectification External dimensions (Unit : mm) Land size figure (Unit : mm)
0.7
0.25 0.1 0.05 0.150.05
0.6
Features 1) Ultra small mold type. (UMD4) 2) Low VF 3) High reliability.
(3)
(2)
0.9MIN.
2.00.2 Each lead has same dimension
1.250.1
2.10.1
00.1 (4) 0.65 0.65 (1) 0.1Min
1.3
UMD4
1.30.1
0.7 0.9 0.1
Construction Silicon epitaxial planar
Structure
ROHM : UMD4 JEDEC : SOT-343 JEITA : SC-82 dot (year week factory) 1Pin Mark
Taping specification (Unit : mm)
4.00.1 2.00.05 1.550.05 0.30.1 1.750.1
3.50.05
2.450.1
2.40.1
8.00.2
5.50.2
2.20.1
4.00.1
1.10.1
00.5
2.40.1 1.150.1
Absolute maximum ratings (Ta=25C) Parameter Symbol VRM Reverse voltage (repetitive peak) VR Reverse voltage (DC) Average rectified forward current*1 Io IFSM Forward current surge peak 60Hz1cyc*1 Junction temperature Tj Storage temperature Tstg (*1) Rating of per diode Electrical characteristics (Ta=25C) Parameter Symbol VF1 VF2 Forward voltage VF3 VF4 Reverse current IR
Limits 30 30 200 1 125 -40 to +125
Unit V V mA A
Min. -
Typ. -
Max. 0.28 0.33 0.43 0.50 30
Unit V V V V A
Conditions IF=1mA IF=10mA IF=100mA IF=200mA VR=10V
Rev.C
1.6
0.05
1/3
RB481K
Diodes
Electrical characteristic curves (Ta=25C)
1000 100000 100 Ta=125 f=1MHz
FORWARD CURRENT:IF(mA)
REVERSE CURRENT:IR(uA)
10 1 0.1
Ta=75
1000 100 10 1 0.1 0.01
Ta=75 Ta=25 Ta=-25
Ta=-25 Ta=25
0.01 0.001 0 100 200 300 400 500 FORWARD VOLTAGEVF(mV) VF-IF CHARACTERISTICS
CAPACITANCE BETWEEN TERMINALS:Ct(pF)
30
100
Ta=125
10000
10
0
10 20 REVERSE VOLTAGEVR(V) VR-IR CHARACTERISTICS
1 0 5 10 15 REVERSE VOLTAGE:VR(V) VR-Ct CHARACTERISTICS 20
450
50
20
FORWARD VOLTAGE:VF(mV)
REVERSE CURRENT:VR(uA)
440 430 420 410 AVE:421.0mV 400
40 35 30 25 20 15 10 5 0 AVE:4.775uA
CAPACITANCE BETWEEN TERMINALS:Ct(pF)
Ta=25 IF=200mA n=10pcs
45
Ta=25 VR=10V n=30pcs
19 18 17 16 15 14 13 12 11 10 AVE:14.33pF
Ta=25 f=1MHz VR=0V n=10pcs
VF DISPERSION MAP
IR DISPERSION MAP
Ct DISPERSION MAP
20
10
10 Ifsm 8.3ms 8.3ms 1cyc
PEAK SURGE FORWARD CURRENT:IFSM(A)
PEAK SURGE FORWARD CURRENT:IFSM(A)
PEAK SURGE FORWARD CURRENT:IFSM(A)
Ifsm 15
1cyc 8.3ms
Ifsm t
10
5
5
5 AVE:5.60A 0
0 1 IFSM DISPERSION MAP 10 NUMBER OF CYCLES IFSM-CYCLE CHARACTERISTICS 100
0 1 10 TIME:t(ms) IFSM-t CHARACTERISTICS 100
1000
TRANSIENT THAERMAL IMPEDANCE:Rth (/W)
0.2 Rth(j-a)
0.5 0.4
FORWARD POWER DISSIPATION:Pf(W)
Rth(j-c) 100
REVERSE POWER DISSIPATIONPR (w)
0.15
D=1/2 DC
0.3 0.2 0.1 0 DC Sin(180) D=1/2
Mounted on epoxy board IM=10mA IF=100mA
0.1
Sin(180)
1ms
time
0.05
300us
10 0.001
10 TIME:(s) Rth-t CHARACTERISTICS
0.1
1000
0 0 0.1 0.2 0.3 0.4 AVERAGE RECTIFIED FORWARD CURRENTIo(A) Io-P CHARACTERISTICS 0.5
0
10 20 REVERSE VOLTAGEVR(V) VR-PR CHARACTERISTICS
30
Rev.C
2/3
RB481K
Diodes
0.5
0A 0V DC
Io
0.5
AVERAGE RECTIFIED FORWARD CURRENT Io(A)
AVERAGE RECTIFIED FORWARD CURRENT Io(A)
0.4 0.3 0.2 0.1 0 0
t T
VR D=t/T VR=15V Tj=125
0A 0V DC D=1/2
Io t T VR D=t/T VR=15V Tj=125
0.4 0.3 0.2 0.1 0
D=1/2
Sin(180)
Sin(180)
25 50 75 100 AMBIENT TEMPERATURETa() Derating Curve
125
0
25
50
75
100
125
CASE TEMPARATURETc() Derating Curve
Rev.C
3/3
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 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-Rev1.1

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