UES804R Datasheet, PDF (1/3 Pages) Microsemi Corporation – ULTRAFAST RECTIFIERS, High Efficiency, 50A

SCOTTSDALE DIVISION
UES804 UES804HR2
UES805 UES805HR2
UES806 UES806HR2
ULTRAFAST RECTIFIERS,
High Efficiency, 50A^TM
DESCRIPTION
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.
APPEARANCE
DO-5
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES
• Very Low Forward Voltage
• Very Fast Recovery Times
• High Reliability Screening Options with HR2 Suffix
(ie. UES804HR2)
• Low Thermal Resistance
• Mechanically rugged
• Standard Polarity is Cathode to Case. For Reverse
Polarity, Add Suffix R (ie. UES804R)
APPLICATIONS / BENEFITS
• 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
ABSOLUTE MAXIMUM RATINGS
• 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, I_O @ T_C = 100^oC………50 A
• Surge Current, 8.3 ms …………………………………600 A
• Thermal Resistance, Junction to Case……………0.8 ^oC/W
• Operating and Storage Temp. Range…….-55^oC to +150^oC
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-Lead Plated
• Weight: 15.5 grams (approximate)
• Maximum Stud Torque: 30 inch pounds
• Marking: Part Number and Logo
ELECTRICAL CHARACTERISTICS
Maximum
Microsemi Part Number
Working Peak
Reverse
Voltage
V_RWM
UES804
UES804HR2
200 V
Forward
Voltage
V_F
@ 50 A
t_p = 300 µs
T_C = 25^oC
T_C = 125^oC
UES805
UES805HR2
300 V
1.25 V
1.15 V
UES806
UES806HR2
400 V
* Measured in circuit I_F = 0.5 A, I_R = 1 A, I_REC = 0.25 A
Maximum
Reverse
Current
I_R
@ V_RWM
T_C = 25^oC T_C = 125^oC
70 µA
30 mA
Maximum
Reverse
Recovery
Time*
t_rr
50 ns
Copyright  2003
9-20-2004 REV B
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, [phone], Fax: [phone]
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