ISSUED DATE :2003/01/28
REVISED DATE :2005/05/05B
GTM
CORPORATION
G491SD
S U R F A C E M O U N T, S C H O T T K Y B A R R I E R D I O D E
V O LT AG E 2 5 V, C U R R E N T 1 A
Description
The G491SD is low power rectification for switching power supply.
Package Dimensions
TPU.34)QBDLBHF*
Millimeter
Millimeter
Min. Max.
1.90 REF.
REF.
REF.
Min.
Max.
3.10
2.80
1.60
0.50
0.10
0.55
A
B
C
D
E
F
2.70
2.40
1.40
0.35
0
G
H
K
J
L
M
1.00
1.30
0.20
-
1.15
10̓
0.10
0.40
0.85
0̓
0.45
Absolute Maximum Ratings at Ta = 25к
Parameter
Symbol
Tj
Ratings
Unit
ć
ć
V
Junction Temperature
+125
Storage Temperature
Tstg
VRRM
VRMS
VDC
IFSM
CJ
-40 ~ +125
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
25
18
20
3
V
Maximum DC Blocking Voltage
V
Peak Forward Surge Current at 8.3mSec single half sine-wave
Typical Junction Capacitance between Terminal
Maximum Average Forward Rectified Current
Total Power Dissipation
A
30
1.0
225
pF
A
Io
PD
mW
Characteristics at Ta = 25к
Characteristics
Symbol
V(BR)R
VF
Min.
Max.
Unit
Test Condition
IR = 100uA
Reverse breakdown voltage
25
-
-
V
V
Maximum Instantaneous Forward Voltage
Maximum Average Reverse Current
0.45
200
IF = 1A
IR
-
uA
VR = 20V
G491SD
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