USD545HR2 Datasheet PDF - Microsemi

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USD545HR2
Microsemi

Part Number USD545HR2
Description POWER SCHOTTKY RECTIFIERS
Page 3 Pages


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SCOTTSDALE DIVISION
USD520, USD520HR2, USD535, USD535HR2,
USD545, USD545HR2, USD550, USD550HR2
POWER SCHOTTKY RECTIFIERSTM
DESCRIPTION
This series of 75 Amp rated average forward current series of Schottky
barrier power rectifiers in 20 through 50 volt selections is ideally suited for
output rectifiers and catch diodes in low voltage power supplies. The
Microsemi high conductivity design, using a heavy copper top post and 4-
point crimp, ensures cool thermal operation and low dynamic impedance
with applicable heat sinking for peak repetitive forward currents up to 150
Amps at 50% duty cycle. This rugged DO-5 hermetically sealed design
absorbs stress that can otherwise damage glass-to-metal seals during
installation and operation. It is also available in a flexible top lead as
described herein.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
APPEARANCE
DO-5
FEATURES
Very Low Forward Voltage (0.6V at 60A, 125oC)
Low Recovered Charge
Rugged Package Design (DO-5)
Low Reverse Current (<50mA at rated VR at
125oC)
Hermetically sealed
High Reliability Screening Option with HR2 Suffix
(ie. USD520HR2)
Available with Flexible Top Lead with F suffix to
part number
ABSOLUTE MAXIMUM RATINGS
DC Blocking Voltage VR: Same as VRWM (see below)
Peak Repetitive Forward Current IFRM: 150 A
@ TC = 115 oC (Rated VR, Sq Wave, 20 kHz, 50 % Duty Cycle)
Average Forward Current, IF(AV): 75 A @ TC = 115 oC
Non-Repetitive Peak Surge Current (8.3 ms), IFSM: 1000 A
Peak Reverse Transient Current, IRM: 2 A
Storage Temperature Range, TSTG: -55oC to +200oC
Operating Junction Temperature TJ(PK): 175 oC
Thermal Resistance, Junction to Case, R?JC: 0.8oC/W
APPLICATIONS / BENEFITS
Output Schottky Rectifiers for Low Voltage Power
Supplies
Catch Diodes for Low Voltage Power Supplies
High Efficiency for Low Voltage Supplies
Robust Construction with Heavy Copper Top Post
and Four-Point Crimp
High Peak Operating Temperature
Low Thermal Resistance (0.8oC/W)
High Surge Current (1000A)
MECHANICAL AND PACKAGING
Industry Standard DO-5 (DO-203AB) Package with
11/16 inch Hex and 1/4-28 Threaded Stud
Hermetically Sealed Metal and Glass Case Body
Metal Surface Finish: Tin Plated
Weight: 16 grams (approximate)
Maximum Unlubricated Stud Torque: 30 inch pounds
Angular Orientation of Terminal Undefined
Marking: Part Number and Logo
Flexible Top Lead Option: Add an “F” Suffix to Part
Number (see mechanical specifications on page 3)
ELECTRICAL CHARACTERISTICS (TCASE = 25oC)
Non Maximum
Working Repetitive
Forward
Peak
Peak
Voltage
Microsemi Part Number
USD520 USD520HR2
Reverse
Voltage
VRWM
20 V
Reverse
Voltage
VRSM
@ IRM
24 V
@10 A,
25oC
VF
@60 A,
25oC
USD535
USD545
USD535HR2
USD545HR2
35 V
45 V
42 V
54 V
0.50 V
0.68 V
USD550 USD550HR2
50 V
60 V
* Duty Cycle = 1%
@60 A,
125 oC
0.60 V or
0.63 V with
flexible
lead option
Maximum Reverse
Current (pulsed)*
IR @ VRWM
@TC =
25oC
20 mA
@TC =
125oC
50 mA
50 mA
50 mA
75 mA
Maximum
Capacitance
@VR = 5.0 V
4000 pF
Copyright © 2003
02-03-2003 REV 0
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 1



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SCOTTSDALE DIVISION
USD520, USD520HR2, USD535, USD535HR2,
USD545, USD545HR2, USD550, USD550HR2
POWER SCHOTTKY RECTIFIERSTM
OUTLINE AND CIRCUIT
OPTIONAL HIGH RELIABILITY (HR2) SCREENING
1. High Temperature
2. Temperature Cycle
SCREEN
MIL-STD-750
METHOD
1032
1051
3. Hermetic Seal
a. Fine Leak
b. Gross Leak
4. Thermal Impedance
5. Interim Electrical Parameters
6. High Temperature Reverse Blocking
7. Final Electrical Parameters
1071
3101
GO/NO GO
As Applicable
GO/NO GO
The following tests are performed on 100% of the devices.
CONDITIONS
24 Hours @ TA = 150oC
F, 20 Cycles, -55 to +150oC. No dwell required @
25oC, T>10 min. @ extremes
H, Helium
C, Liquid
As Applicable
T=48 hrs, Tc=125°C with applicable bias conditions
As Applicable
Copyright © 2003
02-03-2003 REV 0
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 2



No Preview Available !

SCOTTSDALE DIVISION
USD520, USD520HR2, USD535, USD535HR2,
USD545, USD545HR2, USD550, USD550HR2
POWER SCHOTTKY RECTIFIERSTM
MECHANICAL SPECIFICATIONS
Notes:
1.
2.
3.
4.
Cathode is stud
Maximum unlubricated stud torque: 30 inch pounds.
Angular Orientation of terminal is undefined.
Maximum tension (90o) anode terminal 15 pounds for 30
seconds
INCHES
MILLIMETERS
A .225 +/- .005
5.72 +/- 0.13
B .060 MIN.
1.52 MIN.
C .156 +/- .020
3.96 +/- 0.51
D .156 MIN. FLAT 3.96 MIN. FLAT
E .667 DIA. MAX 16.94 DIA. MAX.
F .090 MAX
2.29 MAX.
G .677 +/- .010
17.20 +/- 0.25
H .375 MAX.
9.53 MAX.
J .140 MIN. DIA. 3.56 MIN. DIA.
K 1.000 MAX.
25.40 MAX.
L .450 MAX.
11.43 MAX.
M .438 +/- .015
11.13 +/- 0.38
N .078 MAX.
1.98 MAX.
FLEXIBLE TOP LEAD (OPTIONAL) Add an “F” suffix to Part Number.
INCHES
M .718 MAX
N 4.50 +/- .250
P .525 MAX.
Q .675 +/- .035
R .205 +/- .005
S .075 +/- .010
T 1.125 MAX.
MILLIMETERS
18.24 MAX
114.3 +/- 6.35
13.23 MAX.
17.15 +/- 0.89
5.21 +/- 0.13
1.91 +/- 0.25
28.58 MAX.
*To 125oC (Ambient)
Note: Consult Factory for Non-standard Lead Lengths.
DO-5 with Flexible Lead
Copyright © 2003
02-03-2003 REV 0
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 3



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