Microsemi Corporation 1N647-1, 1N647, 1N646UR-1 Datasheet
Silicon Rectifier Diodes DO-35 Glass Package
6 Lake Street - Lawrence, MA 01841
Tel: 978-681-0392 - Fax: 978-681-9135
Absolute Maximum Ratings Symbol Value Unit
Power Dissipation at 3/8" from the body, TL= 75 oC P
tot
600 mWatts
Average Forward Rectified Current at TL= 75 oC I
AV
400 mAmps
Operating and Storage Temperature Range T
O&S
-65 to 175
o
C
Thermal Impedance Z
qJX
35
o
C/W
Detail Specifications
Features
Six Sigma quality
Humidity proof glass
Metallurgically bonded
Thermally matched system
No thermal fatigue
High surge capability
Sigma Bond™ plated contacts
100% guaranteed solderability
(DO-213AA) SMD MELF commercial (LL) and MIL (UR-1) types available
Use Advantages
Used as a general purpose rectifier in power supplies, or for clipping and
steering applications.
High performance alternative to small signal diodes where space does not
permit use of power rectifiers.
May be used in hostile environments where hermeticity and reliability are
important i.e. (Military and Aero/Space). MIL-S- 19500/ 240 approvals.
Available up to JANTXV-1 level.
"S" level screening capability to Source Control Drawings.
Breakdown Maximum Forward Maximum Maximum Typical
Reverse Voltage Average Rectified Current Voltage Reverse Leakage Current Surge Junction
Voltage (MIN.) _______________ Drop _______________ Current Capacitance
@ 100µA (IO)(I
O
)(VF) @ IF = 400mA (IR) @ V
R
(I
FSM
) @ -12V
(VR)(B
V
) 25° C 150° C (MIN.) (MAX.) 25° C 100° C (NOTE 1) (CO)
Type Volts Volts Amps Amps Volts µA µ A Amps pF
1N645,-1 225 275 0.4 0.15 1.0 0.2 15 3 9
1N646,-1 300 360 0 .4 0.15 1.0 0.2 15 3 9
1N647,-1 400 480 0 .4 0.15 1.0 0.2 20 3 9
1N648,-1 500 600 0 .4 0.15 1.0 0.2 20 3 9
1N649,-1 600 720 0.4 0.15 1.0 0.2 25 3 9
Note 1: Surge Current @TA = +25° C to +150° C, for 1 Second
For MELF DO-213AA surface mount package, replace "1N" prefix with "LL" for commercial.
1N645 to 649
or
1N645-1 to 649-1
DO-35 Glass Package
Dia.
0.06-0.09"
1.0"
25.4 mm
(Min .)
Len
g
th
0.120-.200"
3.05-5.08-
mm
1.53-2.28 mm
0.018-0.022"
0.458-0.558 mm
Lead Dia.
Silicon Rectifier Diodes DO-35 Glass Package
6 Lake Street - Lawrence, MA 01841
Tel: 978-681-0392 - Fax: 978-681-9135
0 20 40 60 80 100 120 140 160 180
T em perature ( 3/8" from body) C
0
100
200
300
400
500
Power Dissipated (MilliWatts)
DO-35 POWER DERATING CURVE
DO-35 DERATING (175 C Tj)
1N645-1
thru
1N649-1
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