UES804 UES804HR2
UES805 UES805HR2
ULTRAFAST RECTIFIERS,
S C O T T S D A L E D I V I S I O N
High Efficiency, 50ATM
DESCRIPTION
APPEARANCE
DO-5
The UES804 series of ultrafast high-efficiency rectifiers is specifically
designed for operation in power switching circuits operating at frequencies
of 20 kHz or higher. These devices have 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.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES
APPLICATIONS / BENEFITS
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Very Low Forward Voltage
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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
Very Fast Recovery Times
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High Reliability Screening Options with HR2 Suffix
(ie. UES804HR2)
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Low Thermal Resistance
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Extremely Robust in Power Cycling
High Surge Capability
Mechanically rugged
Standard Polarity is Cathode to Case. For Reverse
Polarity, Add Suffix R (ie. UES804R)
Hermetically Sealed
ABSOLUTE MAXIMUM RATINGS
MECHANICAL AND PACKAGING
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Peak Inverse Voltage, UES804, UES804HR2……….200 V
Peak Inverse Voltage, UES805, UES805HR2……….300 V
Peak Inverse Voltage, UES806, UES806HR2……….400 V
Average DC Output Current, IO @ TC = 100oC………50 A
Surge Current, 8.3 ms …………………………………600 A
Thermal Resistance, Junction to Case……………0.8 oC/W
Operating and Storage Temp. Range…….-55oC to +150oC
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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
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Metal Surface Finish: Tin-Lead Plated
Weight: 15.5 grams (approximate)
Maximum Stud Torque: 30 inch pounds
Marking: Part Number and Logo
ELECTRICAL CHARACTERISTICS
Maximum
Forward
Voltage
Maximum
Reverse
Current
Maximum
Reverse
Recovery
Time*
Working Peak
Reverse
Microsemi Part Number
Voltage
V
F
I
R
V
@ 50 A
RWM
t
@ VRWM
rr
tp = 300 µs
TC = 25oC
1.25 V
TC = 125oC
1.15 V
TC = 25oC
TC = 125oC
30 mA
UES804
UES805
UES806
UES804HR2
UES805HR2
UES806HR2
200 V
300 V
400 V
50 ns
70 µA
* Measured in circuit IF = 0.5 A, IR = 1 A, IREC = 0.25 A
Copyright 2003
Microsemi
Page 1
9-20-2004 REV B
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503