ER490 / ER491
Features
Low Turn-on Voltage
Fast Switching
PN Junction Guard Ring for Transient a
nd
ESD Protection
S
CURRENT 1.0 Ampere
VOLTAGE 20 to 40 Volts
A
L
2
3
Top View
1
D
G
C
H
3
2
1
K
J
B
SC-59
Dim
A
B
C
D
G
H
J
K
L
S
Min
2.70
1.30
1.00
0.35
1.70
0.00
0.10
0.20
1.25
2.25
Max
3.10
1.70
1.30
0.50
2.30
0.10
0.26
0.60
1.65
3.00
Mechanical Data
Case: Molded Plastic
Terminals: Solderable per MIL-STD-202,
Method 208
Polarity: See Diagrams Below
Weight: 0.008 grams (approx.)
Mounting Position: Any
All Dim ension in mm
3
CATHODE
2
ANODE
3
CATHODE
2
ANODE
ER491 Marking : 10T
ER490 Marking : 10F
Maximum Ratings and Electrical Characteristics
Type Number
ER491
Rating at 25
o
C ambient temperature unless otherwise specified Single phase, half wave,
60 Hz, resistive or inductive load. For capacitive load, derate current by 20%
ER490
Units
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward Rectified Current
Peak Forward Surge Current, 8.3 ms SingleHalf
Sine-wave Superimposed on Rated Loadmethod
(JEDEC)
Maximum lnstantaneous Forward Voltage At 1.0A
Maximum D.C. Reverse Current @ T
A
=25
o
C
At Rated DC Blocking Voltage @ T
A
=100
o
C
Operating Junction Temperature Range T
J
Storage Temperature Range T
STG
20
14
20
1.0
5.00
0.45
0.1
4.0
-25+125
-50+125
40
28
40
v
v
v
A
A
0.53
V
mA
mA
o
C
o
C
DAESAN [ DAESAN ELECTRONICS CORP. ]
