Vishay 40L40CW, 40L45CW Data Sheet

40L40CW/40L45CW

Vishay High Power Products

Schottky Rectifier, 2 x 20 A

	Base
	common
	cathode
	2
1	3

TO-247AC	Anode	2	Anode
	1		2

Common

cathode

FEATURES

•150 °C TJ operation

•Center tap TO-247 package

•High purity, high temperature epoxy encapsulation for enhanced mechanical strength and moisture resistance

•Very low forward voltage drop

•High frequency operation

•Guard ring for enhanced ruggedness and long term reliability

•Designed and qualified for industrial level

DESCRIPTION

PRODUCT SUMMARY

IF(AV)	2 x 20 A
VR	40/45 V

The 40L..CW center tap Schottky rectifier has been optimized for very low forward voltage drop with moderate leakage. The proprietary barrier technology allows for reliable operation up to 150 °C junction temperature. Typical applications are in parallel switching power supplies.

MAJOR RATINGS AND CHARACTERISTICS

SYMBOL	CHARACTERISTICS	VALUES	UNITS
IF(AV)	Rectangular waveform	40	A
VRRM		40/45	V
IFSM	tp = 5 µs sine	1240	A
VF	20 Apk, TJ = 125 °C (per leg, typical)	0.42	V
TJ		- 55 to 150	°C

VOLTAGE RATINGS

	PARAMETER	SYMBOL	40L40CW	40L45CW	UNITS
	Maximum DC reverse voltage	VR	40	45	V
	Maximum working peak reverse voltage	VRWM

ABSOLUTE MAXIMUM RATINGS

	PARAMETER		SYMBOL	TEST CONDITIONS		VALUES	UNITS
	Maximum average	per leg				20
	forward current		IF(AV)	50 % duty cycle at TC = 122 °C, rectangular waveform
		per device				40
	See fig. 5						A
	Maximum peak one cycle non-repetitive			5 µs sine or 3 µs rect. pulse	Following any rated load	1240
	surge current per leg		IFSM		condition and with rated
				10 ms sine or 6 ms rect. pulse		350
	See fig. 7				VRRM applied
	Non-repetitive avalanche energy per leg		EAS	TJ = 25 °C, IAS = 3 A, L = 4.4 mH		20	mJ
	Repetitive avalanche current per leg		IAR	Current decaying linearly to zero in 1 µs		3	A
				Frequency limited by TJ maximum VA = 1.5 x VR typical

Document Number: 93344	For technical questions, contact: [e-mail]	www.vishay.com
Revision: 21-Aug-08		1

40L40CW/40L45CW

Vishay High Power Products Schottky Rectifier, 2 x 20 A

ELECTRICAL SPECIFICATIONS
PARAMETER		SYMBOL	TEST CONDITIONS		TYP.	MAX.				UNITS
			20 A	TJ = 25 °C	0.48		0.53
Maximum forward voltage drop per leg		VFM (1)	40 A		0.61		0.69			V
See fig. 1			20 A	TJ = 125 °C	0.42		0.49
			40 A		0.60		0.70
Reverse leakage current per leg		IRM (1)	TJ = 25 °C	VR = Rated VR	-		1.5			mA
See fig. 2			TJ = 100 °C		20		80
Threshold voltage		VF(TO)	TJ =TJ maximum		0.27					V
Forward slope resistance		rt			8.72					mΩ
Maximum junction capacitance per leg		CT	VR = 5 VDC (test signal range 100 kHz to 1 MHz) 25 °C		-	1500				pF
Typical series inductance per leg		LS	Measured lead to lead 5 mm from package body		7.5		-			nH
Maximum voltage rate of change		dV/dt	Rated VR		10 000					V/µs
Note
(1) Pulse width < 300 µs, duty cycle < 2 %
THERMAL - MECHANICAL SPECIFICATIONS
PARAMETER		SYMBOL	TEST CONDITIONS		VALUES				UNITS
Maximum junction and storage		TJ, TStg			- 55 to 150					°C
temperature range
Maximum thermal resistance,			DC operation		1.6
junction to case per leg			See fig. 4
		RthJC
Maximum thermal resistance,			DC operation		0.8				°C/W
junction to case per package
Typical thermal resistance,		RthCS	Mounting surface, smooth and greased		0.24
case to heatsink
Approximate weight					6					g
					0.21					oz.
Mounting torque	minimum		Non-lubricated threads		6 (5)				kgf cm
									(lbf in)
	maximum				12 (10)
Marking device			Case style TO-247AC (JEDEC)			40L40CW
						40L45CW

www.vishay.com	For technical questions, contact: [e-mail]	Document Number: 93344
2		Revision: 21-Aug-08

40L40CW/40L45CW

Schottky Rectifier, 2 x 20 A Vishay High Power Products

	<![if ! IE]> <![endif]>Current (A)	1000
	<![if ! IE]> <![endif]>Forward	100
							TJ = 150 °C
							TJ	= 125 °C
	<![if ! IE]> <![endif]>- Instantaneous
							TJ = 25 °C
		10
		1
	<![if ! IE]> <![endif]>F
		0	0.2	0.4	0.6	0.8	1.0	1.2	1.4	1.6	1.8
	<![if ! IE]> <![endif]>I

VFM - Forward Voltage Drop (V)

Fig. 1 - Maximum Forward Voltage Drop Characteristics

(Per Leg)

10 000

<![if ! IE]> <![endif]>(pF)
<![if ! IE]> <![endif]>CapacitanceJunction-	1000
<![if ! IE]> <![endif]>T
<![if ! IE]> <![endif]>C
	100

0 10

	1000
<![if ! IE]> <![endif]>(mA)	100			TJ =		150 °C
					TJ = 125 °C
<![if ! IE]> <![endif]>Current
	10		TJ = 100 °C
<![if ! IE]> <![endif]>Reverse	1			TJ = 75 °C
				TJ	= 25 °C
<![if ! IE]> <![endif]>-	0.1			TJ	= 50 °C
<![if ! IE]> <![endif]>R	0.01
<![if ! IE]> <![endif]>I
	0.001
																		40
	0		5		10		15			20		25		30		35				45

VR - Reverse Voltage (V)

Fig. 2 - Typical Values of Reverse Current vs.

Reverse Voltage (Per Leg)

TJ = 25 °C

20

30

40

50

VR - Reverse Voltage (V)

Fig. 3 - Typical Junction Capacitance vs. Reverse Voltage (Per Leg)

<![if ! IE]> <![endif]>(°C/W)	10
<![if ! IE]> <![endif]>Impedance	1
							PDM
							t1
<![if ! IE]> <![endif]>- Thermal
	0.1				D = 0.75		t2
			Single pulse		D = 0.50
					D = 0.33	Notes:
		(thermal resistance)
					D = 0.25
						1. Duty factor D = t1/t2
<![if ! IE]> <![endif]>thJC					D = 0.20
						2. Peak TJ = PDM x ZthJC + TC
<![if ! IE]> <![endif]>Z	0.01
	0.00001	0.0001	0.001	0.01	0.1	1	10	100

t1 - Rectangular Pulse Duration (s)

Fig. 4 - Maximum Thermal Impedance ZthJC Characteristics (Per Leg)

Document Number: 93344	For technical questions, contact: [e-mail]	www.vishay.com
Revision: 21-Aug-08		3