SMD Small Signal Schottky Barrier Diode
RB490D / RB491D
List
Formosa MS
List................................................................................................. 1
Package outline............................................................................... 2
Features.......................................................................................... 2
Mechanical data............................................................................... 2
Maximum ratings ............................................................................. 2
Rating and characteristic curves........................................................ 3
Pinning information........................................................................... 4
Marking........................................................................................... 4
Suggested solder pad layout............................................................. 4
Packing information.......................................................................... 5
Reel packing.................................................................................... 6
Suggested thermal profiles for soldering processes............................. 6
High reliability test capabilities........................................................... 7
http://www.formosams.com/
TEL:886-2-22696661
FAX:886-2-22696141
Document ID
Issued Date
2009/08/10
Revised Date
2011/05/13
Revision
C
Page.
7
Page 1
DS-22163F
SMD Small Signal Schottky Barrier Diode
RB490D / RB491D
1.0A Surface Mount Small Signal
Schottky Diodes -20V-40V
Features
0.042 (1.05)
Formosa MS
Package outline
SC-59
•
Low current rectification and high speed switching.
•
S mall surface mount type.
•
Up to 500mA current capability.
•
Low forward voltage drop .
•
Silicon epitaxial planar chip, metal silicon junction.
•
Lead-free parts for green partner, exceeds environmental
standards of MIL-STD-19500 /228
0.034 (0.85)
0.020 (0.50)
(C)
0.122 (3.10)
0.106 (2.70)
.091(2.30)
.068(1.70)
(B)
(A)
•
High speed ( trr < 5 ns )
•
Suffix "-H" indicates Halogen-free part, ex.RB490D-H.
0.068 (1.70)
0.052 (1.30)
0.118 (3.00)
0.090 (2.25)
0.028 (0.70)
0.020 (0.50)
0.013 (0.35)
0.003 (0.10)
0.011 (0.26)
Mechanical data
0.052 (1.30)
0.040 (1.00)
•
Epoxy:UL94-V0 rated flame retardant
•
Case : Molded plastic, SC-59
•
Terminals : Solder plated, solderable per
MIL-STD-750, Method 2026
Dimensions in inches and (millimeters)
•
Mounting Position : Any
•
Weight : Approximated 0.008 gram
Maximum ratings
(AT T =25 C unless otherwise noted)
o
A
PARAMETER
Maximum recurrent peak reverse voltage
Maximum RMS voltage
Maximum DCblocking voltage
Maximum average forward rectified current
Peak forward surge current
Junction temperature
Storage temperature
Maximum instantaneous forward voltage
Maximum DC reverse current
at 1.0 A
T
A
= 25 C
O
CONDITIONS
Symbol
V
RRM
V
RMS
V
R
I
O
RB490D
40
28
40
1.0
RB491D
25
14
20
UNIT
V
V
V
A
A
o
8.3 ms single half sine-wave
superimposed on rated load(JEDEC method)
I
FSM
T
J
T
STG
V
F
3.00
-55 ~ +125
-65 ~ +175
0.53
0.2
0.45
C
C
o
V
mA
mA
at rated DC blocking voltage T
A
= 100 C
O
I
R
4.0
http://www.formosams.com/
TEL:886-2-22696661
FAX:886-2-22696141
Document ID
Issued Date
2009/08/10
Revised Date
2011/05/13
Revision
C
Page.
7
Page 2
DS-22163F
Rating and characteristic curves for each diode (RB490D / RB491D)
Fig1. Typical Forward Characteristics
Fig 2. Typical Forward Current Derating Curve
1.2
1.0
0.8
0.6
0.4
0.2
0
0
20
40
60
80
100
120
140
160
180
200
Instantaneous Forward Current, I
F
(A)
Average Forward Current, I
F(AV)
(A)
B4
91
D
0D
R
Single phase
helf wave 60Hz
resistive or inductive load
RB
49
Ambient Temperature, T
A
(°C)
Forward Voltage, V
F
V)
Fig 3. Typical Reverse Characteristics
100
Reverse Leakage Current, I
R
, (mA)
10
175
Fig 4. Typical Junction Capacitance
Junction Capacitance, C
J
(pF)
150
125
100
75
50
25
1.0
T
J
=75 C
.1
T
J
=25 C
.01
0
0
20
40
60
80
100 120 140
.01
.05
.1
.5
1
5
10
50
100
PercentagRated Peak Reverse Voltage, (%)
Reverse Voltage, V
R
(V)
http://www.formosams.com/
TEL:886-2-22696661
FAX:886-2-22696141
Document ID
Issued Date
2009/08/10
Revised Date
2011/05/13
Revision
C
Page.
7
Page 3
DS-22163F
SMD Small Signal Schottky Barrier Diode
RB490D / RB491D
Formosa MS
Pinning information
Type number
RB490D
Marking code
10F,D21
C
A
B
Symbol
A
B
RB491D
10T
C
Suggested solder pad layout
SC-59
0.037(0.95)
0.037(0.95)
0.095(2.4)
0.039(1.00)
0.031(0.80)
Dimensions in inches and (millimeters)
http://www.formosams.com/
TEL:886-2-22696661
FAX:886-2-22696141
Document ID
Issued Date
2009/08/10
Revised Date
2011/05/13
Revision
C
Page.
7
Page 4
DS-22163F
SMD Small Signal Schottky Barrier Diode
RB490D / RB491D
Packing information
P
0
P
1
d
E
F
B
W
Formosa MS
A
P
D
2
T
C
D
W
1
D
1
unit:mm
Item
Symbol
Tolerance
SC-59
Carrier width
Carrier length
Carrier depth
Sprocket hole
13" Reel outside diameter
13" Reel inner diameter
7" Reel outside diameter
7" Reel inner diameter
Feed hole diameter
Sprocket hole position
Punch hole position
Punch hole pitch
Sprocket hole pitch
Embossment center
Overall tape thickness
Tape width
Reel width
A
B
C
d
D
D
1
D
D
1
D
2
E
F
P
P
0
P
1
T
W
W
1
0.1
0.1
0.1
0.1
2.0
min
2.0
min
0.5
0.1
0.1
0.1
0.1
0.1
0.1
0.3
1.0
3.15
2.77
1.22
1.50
-
-
178.00
62.00
13.00
1.75
3.50
4.00
4.00
2.00
0.23
8.00
11.40
Note:Devices are packed in accor dance with EIA standar RS-481-A and specifications listed above.
http://www.formosams.com/
TEL:886-2-22696661
FAX:886-2-22696141
Document ID
Issued Date
2009/08/10
Revised Date
2011/05/13
Revision
C
Page.
7
Page 5
DS-22163F
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