ULTRA FAST RECOVERY
1N5811D3A / 1N5811D3B
DLCC3 - Light Weight Hermetic Ceramic Surface Mount
Package is designed as a drop In replacement for “D-5B” / “E-
Ultra Fast Reverse Recovery
Switching Power Supply Applications
Space Level and High-Reliability Screening Options Available
ABSOLUTE MAXIMUM RATINGS
(TA = 25°C unless otherwise stated)
Working Peak Reverse Voltage
Maximum Rectified Current Io
= TA +55°C
Derate above TA 55°C
Surge Current, tp = 8.3ms
Junction Temperature Range
Storage Temperature Range
-65 to +175°C
-65 to +175°C
Thermal Resistance, Junction To Solder Pads TSP = 25°C
Thermal Resistance, Junction To Ambient, On Cheap PCB
Thermal Resistance, Junction To Ambient, On PCB
(1) IO1 is rated at 3.0A @ TA = 55°C for PC boards where thermal resistance from mounting point to ambient is sufficiently controlled where
TJ(Max) does not exceed 175°C; This equates to R
(2) TA = 25°C @ IO=3.0A and VRWM for ten 8.3mS surges at 1 minute intervals.
(3) PCB = FR4, 0.0625 Inch (1.59mm) thick, single layer, 1.0-Oz Cu, Pad Size, (1.0” x 1.0”), (645mm x 645mm) , horizontal in still air.
(4) PCB = FR4, 0.0625 Inch (1.59mm) thick, single layer, 1.0-Oz Cu, Pad Size, (0.070” x 0.155”)‡, (1.78mm x 3.94mm) ‡, horizontal in still air.
IO1 is rated at 1.5A @ TA = 55°C for PC boards where R
120°C/W. Derate at 12.5mA/°C above TA = 55°C in this case.
‡ Recommended solder pad layout dimensions for this device, as detailed within this datasheet for the D-5B device.
Semelab plc reserves the right to change test conditions, parameter limits and package dimensions without notice.
Information furnished by Semelab is believed to be both accurate and reliable at the time of going to press. However
Semelab assumes no responsibility for any errors or omissions discovered in its use. Semelab encourages customers to
verify that datasheets are current before placing an order.
Telephone +44 (0) 1455 556565
Coventry Road, Lutterworth, Leicestershire, LE17 4JB
Fax +44 (0) 1455 552612
Document Number 8613
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