PD - 20358C
SCHOTTKY RECTIFIER 25 Amp
22DGQ045
The 22DGQ045 (series doubler) Schottky rectifier has
been expressly designed to meet the rigorous
requirements of hi-rel environments. It is packaged in the
hermetic, isolated, TO-254AA package and has extremely
low reverse leakage at high temperature. Full MIL-PRF-
19500 quality conformance testing is available on source
controlled drawings to JANTX, JANTXV, or JANS levels.
Typical applications include switching power supplies and
resonant power converters.
• Hermetically sealed
• High frequency operation
• Guard ring for enhanced ruggedness and long term
reliability
• Schottky's connected in series
• Electrically isolated
• Ceramic eyelets
Desciption/Features
02/26/99
Characteristics 22DGQ045 Units
IF(AV) Rectangular 25 A
waveform
VRRM (Per Leg) 45 V
IFSM@ tp = 8.3ms sine 300 A
VF @ 25Apk, T J = 125°C 0.76 V
(Per Leg)
TJ, Tstg Operating and storage -55 to 150 °C
Major Ratings and Characteristics
CASE STYLE
Conforms to JEDEC Outline TO-254AA
Dimensions in millimiters and (inches)
(ISOLATED BASE)
ANODE COMMON ANODE
CATHODE
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M-1982
2. ALL DIMENSIONS ARE SHOW IN MILLIMETERS (INCHES).
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22DGQ045
2 www.irf.com
Part number 22DGQ045
VRMax. DC Reverse Voltage (V) (Per Leg)
VRWM Max. Working Peak Reverse Voltage (V) (Per Leg)
Voltage Ratings
45
Parameters 22DGQ045 Units Conditions
VFM Max. Forward Voltage Drop 0.82 V @ 25A
(Per Leg) See Fig. 1 1.18 V @ 50A
0.76 V @ 25A
1.11 V @ 50A
IRM Max. Reverse Leakage Current 0.5 mA TJ = 25°C
(Per Leg) See Fig.2 20 mA TJ = 125°C
CTMax. Junction Capacitance (Per Leg) 1400 pF VR = 5VDC, (test signal range 100KHz to 1MHz) 25°C
LSTypical Series Inductance (Per Leg) 8.7 nH Measured lead to lead 5mm from package body
TJ = 25°C
TJ = 125°C
VR = rated VR
Electrical Specifications
Pulse Width < 300µs, Duty Cycle < 2%
Parameters 22DGQ045 Units Conditions
IF(AV) Max. Average Forward Current 25 A 50% duty cycle @ TC = 100°C, rectangular waveform
See Fig. 4
IFSM Max. Peak One Cycle Non - Repetitive 300 A @ tp = 8.3 ms sine
Surge Current (Per Leg)
Absolute Maximum Ratings
Parameters 22DGQ045 Units Conditions
TJMax.Junction Temperature Range -55 to 150 °C
Tstg Max. Storage Temperature Range -55 to 150 °C
RthJC Max. Thermal Resistance, Junction 1.67 °C/W DC operation See Fig. 5
to Case (Per Leg)
RthJC Max. Thermal Resistance, Junction 1.67 °C/W DC operation
to Case (Per Package)
RthCS Typical Thermal Resistance, Case 0.21 °C/W Mounting surface, smooth and greased
to Heatsink
wt Weight (Typical) 9.3 g
Die Description (Square) 0.150 inches
Case Style TO-254AA JEDEC
Thermal-Mechanical Specifications
22DGQ045
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Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg) Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage (Per Leg)
Fig. 3 - Typical Junction Capacitance Vs.
Reverse Voltage (Per Leg) Fig. 4 - Max. Allowable Case Temperature Vs.
Average Forward Current (Per Leg)
Reverse Current - IR ( mA )
0.0001
0.001
0.01
0.1
1
10
100
0 1020304050
R
A
T = 150°C
125°C
100°C
25°C
J
Reverse Voltage - V (V)
22DGQ045
4 www.irf.com
Fig.5 - Max. Thermal Impedance ZthJC characteristics (Per Leg)
WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 322 3331
IR GREAT BRITAIN: Hurst Green, Oxted, Surrey RH8 9BB, UK Tel: ++ 44 1883 732020
IR CANADA: 15 Lincoln Court, Brampton, Ontario L6T3Z2, Tel: (905) 453 2200
IR GERMANY: Saalburgstrasse 157, 61350 Bad Homburg Tel: ++ 49 6172 96590
IR ITALY: Via Liguria 49, 10071 Borgaro, Torino Tel: ++ 39 11 451 0111
IR FAR EAST: K&H Bldg., 2F, 30-4 Nishi-Ikebukuro 3-Chome, Toshima-Ku, Tokyo Japan 171 Tel: 81 3 3983 0086
IR SOUTHEAST ASIA: 1 Kim Seng Promenade, Great World City West Tower, 13-11, Singapore 237994 Tel: ++ 65 838 4630
IR TAIWAN:16 Fl. Suite D. 207, Sec. 2, Tun Haw South Road, Taipei, 10673, Taiwan Tel: 886-2-2377-9936
http://www.irf.com/ Data and specifications subject to change without notice. 2/99
