Bulletin PD-20721 rev. A 06/02
249NQ...(R) SERIES
SCHOTTKY RECTIFIER 240 Amp
D-67
Major Ratings and Characteristics Characteristics
IF(AV) Rectangular waveform VRRM range IFSM @ tp = 5 µs sine VF TJ @ 240Apk, TJ=125°C range
Description/ Features
The 249NQ...(R) high current Schottky rectifier module series has been optimized for low reverse leakage at high temperature. The proprietary barrier technology allows for reliable operation up to 175° C junction temperature. Typical applications are in switching power supplies, converters, freewheeling diodes, and reverse battery protection. 175° C TJ operation Unique high power, Half-Pak module Replaces four parallel DO-5's Easier to mount and lower profile than DO-5's High purity, high temperature epoxy encapsulation for enhanced mechanical strength and moisture resistance Low forward voltage drop High frequency operation Guard ring for enhanced ruggedness and long term reliability
249NQ...(R) Units
240 135 to 150 20000 0.72 - 55 to 175 A V A V °C
249NQ150 Lug Terminal Anode
Base Cathode
249NQ150R Lug Terminal Cathode
Base Anode
Outline D-67 HALF PAK Module Dimensions in millimeters and (inches)
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249NQ...(R) Series
Bulletin PD-20721 rev. A 06/02
Voltage Ratings
Part number
VR Max. DC Reverse Voltage (V) VRWM Max. Working Peak Reverse Voltage (V)
249NQ135
135
249NQ150
150
Absolute Maximum Ratings
Parameters
IF(AV) Max. Average Forward Current * See Fig. 5 IFSM EAS IAR Max. Peak One Cycle Non-Repetitive Surge Current * See Fig. 7 Non-Repetitive Avalanche Energy Repetitive Avalanche Current
249NQ Units
240 20000 2300 15 1 A
Conditions
50% duty cycle @ TC = 117° C, rectangular wave form Following any rated load condition and 10ms Sine or 6ms Rect. pulse with rated VRRM applied 5µs Sine or 3µs Rect. pulse TJ = 25 °C, IAS = 1 Amps, L = 30 mH Current decaying linearly to zero in 1 µsec Frequency limited by TJ max. VA = 1.5 x VR typical
A mJ A
Electrical Specifications
Parameters
VFM Max. Forward Voltage Drop * See Fig. 1 (1)
249NQ Units
1.07 1.27 0.74 0.86 V V V V mA mA pF nH V/ µs @ 240A @ 480A @ 240A @ 480A TJ = 25 °C TJ = 125 °C
Conditions
TJ = 25 °C TJ = 125 °C VR = rated VR
IRM CT LS
Max. Reverse Leakage Current (1) * See Fig. 2 Max. Junction Capacitance Typical Series Inductance
6 85 6000 5.0 10000
VR = 5VDC, (test signal range 100Khz to 1Mhz) 25 °C From top of terminal hole to mounting plane (Rated VR)
dv/dt Max. Voltage Rate of Change
(1) Pulse Width < 300µs, Duty Cycle < 2%
Thermal-Mechanical Specifications
Parameters
TJ Tstg Max. Junction Temperature Range Max. Storage Temperature Range
249NQ Units
-55 to 175 -55 to 175 0.20 0.15 °C °C °C/W °C/W DC operation
Conditions
RthJC Max. Thermal Resistance Junction to Case RthCS Typical Thermal Resistance, Case to Heatsink wt T Approximate Weight Mounting Torque Terminal Torque Case Style Min. Max. Min. Max.
* See Fig. 4
Mounting surface , smooth and greased
25.6 (0.9) g (oz.) 40 (35) 58 (50) 58 (50) 86 (75) Kg-cm (Ibf-in) Non-lubricated threads
HALF PAK Module
2
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249NQ...(R) Series
Bulletin PD-20721 rev. A 06/02
1000
1000 100
Reverse Current - IR (mA)
T = 175˚C J 150˚C 125˚C 100˚C 75˚C
10 1 0.1
50˚C
100
Instantaneous Forward Current - IF (A)
TJ = 175˚C TJ = 125˚C TJ = 25˚C
0.01 0.001 0 30
25˚C
60
90
120
150
Reverse Voltage - VR (V) Fig. 2 - Typical Values Of Reverse Current Vs. Reverse Voltage
10000
Junction Capacitance - CT (pF)
10
T = 25˚C J
1000
1 0 0.4 0.8 1.2 1.6 Forward Voltage Drop - VFM (V) 2
100 0 30 60 90 120
Reverse Voltage - VR (V) Fig. 3 - Typical Junction Capacitance Vs. Reverse Voltage
Fig. 1 - Max. Forward Voltage Drop Characteristics
1
Thermal Impedance ZthJC (°C/W)
0.1
D = 0.75 D = 0.50 D = 0.33 D = 0.25 D = 0.20
PDM
t1
0.01
Notes:
t2
Single Pulse (Thermal Resistance)
1. Duty factor D = t1 / t 2 2. Peak T J = P DM x Z thJC + T C
0.001 0.00001
0.0001
0.001
0.01
0.1
1
10
100
t1, Rectangular Pulse Duration (Seconds) Fig. 4 - Max. Thermal Impedance ZthJC Characteristics
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3
249NQ...(R) Series
Bulletin PD-20721 rev. A 06/02
180
Allowable Case Temperature - (°C)
280
Average Power Loss - (Watts)
160
DC
240 200 160
140 120 100 Square wave (D = 0.50)
Rated V applied R
D = 0.20 D = 0.25 D = 0.33 D = 0.50 D = 0.75 DC RMS Limit
120 80 40 0 0 100 200 300 400
Average Forward Current - IF(AV) (A) Fig. 6 - Forward Power Loss Characteristics
80
see note (2)
60 0 100 200 300 400
Average Forward Current - IF(AV) (A) Fig. 5 - Max. Allowable Case Temperature Vs. Average Forward Current
Non-Repetitive Surge Current - IFSM (A)
100000
At Any Rated Load Condition And With Rated VRRM Applied Following Surge
10000
1000 10
100
1000
10000
Square Wave Pulse Duration - tp (microsec) Fig. 7 - Max. Non-Repetitive Surge Current
L H IG H-SPE ED S W ITC H FR EE-W H E EL D IO D E 40H FL40 S02 V d = 25 V olt
D UT
IRFP460 Rg = 25 ohm
+
C URRE NT M O N ITO R
Fig. 8 - Unclamped Inductive Test Circuit
(2) Formula used: TC = TJ - (Pd + PdREV) x RthJC ; Pd = Forward Power Loss = IF(AV) x VFM @ (IF(AV) / D) (see Fig. 6); PdREV = Inverse Power Loss = VR1 x IR (1 - D); IR @ VR1 = rated VR
4
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249NQ...(R) Series
Bulletin PD-20721 rev. A 06/02
Data and specifications subject to change without notice. This product has been designed and qualified for Industrial Level. Qualification Standards can be found on IR's Web site.
IR WORLD HEADQUARTERS: 2 33 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 TAC Fax: (310) 252-7309 Visit us at www.irf.com for sales contact information. 06/02
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