ULTRAFAST RECTIFIERS,
High Efficiency, 20ATM
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page
1
Copyright 2002
2-3-2003 REV 0
WWW.
Microsemi
.COM
SCOTTSDALE DIVISION
UES704 UES704HR2
UES705 UES705HR2
UES706 UES706HR2
DESCRIPTION APPEARANCE
The UES704 series of ultrafast high-efficiency rectifiers is specifically
designed for operation in power switching circuits operating at frequencies
of 20 kHz or higher. The low thermal resistance and forward voltage drop
of this series allows the user to replace DO-5 size devices in many
applications. These devices have also been demonstrated capability in
passing power-stress testing to 25 thousand cycles with full-rated forward
current turned on and off without a heat sink. This forces case temperature
increases of 75 °C at which time the current is removed to simulate worst
case applications. The switching times increase relatively little with
temperature or at different currents.
DO-4
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES APPLICATIONS / BENEFITS
• Very Low Forward Voltage
• Very Fast Recovery Times
• Low Thermal Resistance
• High Reliability Screening Option with HR2 Suffix (ie.
UES704HR2)
• Mechanically rugged
• Standard Polarity is Cathode to Stud. For Reverse
Polarity, Add Suffix R (ie. UES704R)
• Power Switching Circuits 20 kHz and above with
minimal parasitic switching losses
• Catch Diodes for Switching Regulators
• Output Rectifiers for High Frequency Square-Wave
Inverters
• Extremely Robust in Power Cycling
• High Surge Capability
• Hermetically Sealed
• Marking: Part Number and Logo
ABSOLUTE MAXIMUM RATINGS MECHANICAL AND PACKAGING
• Peak Inverse Voltage, UES704, UES704HR2……….200 V
• Peak Inverse Voltage, UES705, UES705HR2……….300 V
• Peak Inverse Voltage, UES706, UES706HR2……….400 V
• Average DC Output Current, IO @ TC = 100oC………20 A
• Surge Current, 8.3 ms………………………………….300 A
• Thermal Resistance, Junction to Case…………….1.5oC/W
• Operating and Storage Temp. Range…….-55oC to +150oC
• Industry Standard DO-4 (DO-203AA) Package with
7/16 inch Hex and 10-32 Threaded Stud
• Hermetically Sealed Metal and Glass Case Body
• Metal Surface Finish: Tin Plated
• Weight: 10 grams (approximate)
• Maximum unlubricated stud Torque: 15 inch pounds
• Angular Orientation of Terminal is Undefined
• Marking: Part Number
ELECTRICAL CHARACTERISTICS @ 25°C unless otherwise stated
Microsemi Part Number
Working
Peak
Reverse
Voltage
VRWM
Maximum
Forward
Voltage
VF
@ 20 A
tp = 300 µs
Maximum
Reverse
Current
IR
@ VRWM
Maximum
Reverse Recovery
Time*
trr
TC =
25oC TC = 125oC TC = 25oC TC = 125oC
UES704
UES705
UES706
UES704HR2
UES705HR2
UES706HR2
200 V
300 V
400 V 1.25 V
1.15 V
50 µA 10 mA 50 ns
* Measured in circuit IF = 0.5 A, IR = 1 A, IREC = 0.25 A
UES704 series
ULTRAFAST RECTIFIERS,
High Efficiency, 20ATM
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page
2
Copyright 2002
2-3-2003 REV 0
WWW.
Microsemi
.COM
SCOTTSDALE DIVISION
UES704 UES704HR2
UES705 UES705HR2
UES706 UES706HR2
OUTLINE AND CIRCUIT
UES704 series
O
ULTRAFAST RECTIFIERS,
High Efficiency, 20ATM
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page
3
Copyright 2002
2-3-2003 REV 0
WWW.
Microsemi
.COM
SCOTTSDALE DIVISION
UES704 UES704HR2
UES705 UES705HR2
UES706 UES706HR2
OPTIONAL HIGH RELIABILITY (HR2) SCREENING
The following tests are performed on 100% of the devices.
MECHANICAL
SPECIFICATIONS
INCHES MM
A .078 MAX 1.98 MAX.
B .437 +/- .015 11.10 +/- 0.38
C .405 MAX 10.29 MAX.
D .800 MAX 20.32 MAX.
E .430 +/- .010 10.92 +/- 0.25
F .250 MAX 6.35 MAX.
G .424 MAX 10.77 MAX.
H .066 MIN. DIA 1.68 MIN. DIA
Notes:
1. Cathode is stud.
2. All metal surfaces tin plated.
3. Maximum unlubricated stud
torque: 10 inch pounds.
4. Angular Orientatio
n of terminal
is undefined.
SCREEN MIL-STD-750
METHOD CONDITIONS
1. High Temperature 1032 24 Hours @ TA = 150oC
2. Temperature Cycle 1051 F, 20 Cycles, -55 to +150oC. No dwell required @
25oC, T>10 min. @ extremes
3. Hermetic Seal
a. Fine Leak
b. Gross Leak
1071
H, Helium
C, Liquid
4. Thermal Impedance 3101
5. Interim Electrical Parameters GO/NO GO As applicable
6. High Temperature Reverse Blocking As Applicable t= 48 hours, Tc = 125°C with applicable bias conditions
7. Final Electrical Parameters GO/NO GO As applicable
NOTES:
1. Oscilloscope: Rise time ≤ 3 ns; input impedance = 50 Ω.
2. Pulse Generator: Rise time ≤ 8 ns; source impedance 10 Ω.
3. Current viewing resistor, non-inductive, coaxial
recommended.
UES704 series