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RHRD440

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RHRD440, RHRD450, RHRD460, S E M I C O N D U C T O R RHRD440S, RHRD450S, RHRD460S

April 1995

4A, 400V - 600V Hyperfast Diodes

Features

•Hyperfast with Soft Recovery . . . . . . . . . . . . . . . . <30ns

•Operating Temperature . . . . . . . . . . . . . . . . . . . . +175oC

•Reverse Voltage Up to . . . . . . . . . . . . . . . . . . . . . . . 600V

•Avalanche Energy Rated

•Planar Construction

Applications

•Switching Power Supplies

•Power Switching Circuits

•General Purpose

Description

RHRD440, RHRD450, RHRD460, RHRD440S, RHRD450S, and RHRD460S (TA49055) are hyperfast diodes with soft recovery characteristics (tRR < 30ns). They have half the recovery time of ultrafast diodes and are silicon nitride passivated ionimplanted epitaxial planar construction.

These devices are intended for use as freewheeling/clamping diodes and rectiﬁers in a variety of switching power supplies and other power switching applications. Their low stored charge and hyperfast soft recovery minimize ringing and electrical noise in many power switching circuits, reducing power loss in the switching transistors.

PACKAGING AVAILABILITY

PART NUMBER	PACKAGE	BRAND

RHRD440	TO-251	RHR440

RHRD450	TO-251	RHR450

RHRD460	TO-251	RHR460

RHRD440S	TO-252	RHR440

RHRD450S	TO-252	RHR450

RHRD460S	TO-252	RHR460

NOTE: When ordering, use the entire part number. Add the sufﬁx 9A to obtain the TO-252AA variant in the tape and reel, i.e., RHRD450S9A.

Package

JEDEC STYLE TO-251

ANODE

CATHODE

CATHODE (FLANGE)

JEDEC STYLE TO-252

CATHODE (FLANGE)

CATHODE

ANODE

Symbol

Absolute Maximum Ratings TC = +25oC, Unless Otherwise Speciﬁed
					RHRD440	RHRD450	RHRD460
					RHRD440S	RHRD450S	RHRD460S	UNITS
Peak Repetitive Reverse Voltage. . . . . . . . . . . . . . .	. .	.VRRM			400	500	600	V
Working Peak Reverse Voltage . . . . . . . . . . . . . . . .	. .	VRWM			400	500	600	V
DC Blocking Voltage. . . . . . . . . . . . . . . . . . . . . . . . . .	.	. . .	VR		400	500	600	V
Average Rectified Forward Current . . . . . . . . . . . . . .	.	. IF(AV)			4	4	4	A
(T = +157oC)
C
Repetitive Peak Surge Current. . . . . . . . . . . . . . . . . .	.	. .IFSM			8	8	8	A
(Square Wave, 20kHz)
Nonrepetitive Peak Surge Current . . . . . . . . . . . . . . .	.	. .IFSM			40	40	40	A
(Halfwave, 1 Phase, 60Hz)
Maximum Power Dissipation . . . . . . . . . . . . . . . . . . .	.	. . .	PD		50	50	50	W
Avalanche Energy (See Figures 10 and 11). . . . . . . .	.	. EAVL			10	10	10	mj
Operating and Storage Temperature . . . . . . . . . . . .	T	STG	, T	J	-65 to +175	-65 to +175	-65 to +175	oC
		STG		J
Copyright © Harris Corporation 1995							File Number	3613.4
					7-5

Speciﬁcations RHRD440, RHRD450, RHRD460, RHRD440S, RHRD450S, RHRD460S

Electrical Speciﬁcations					TC = +25oC, Unless Otherwise Speciﬁed

												LIMITS

							RHRD440				RHRD450				RHRD460
							RHRD440S				RHRD450S				RHRD460S

SYMBOL				TEST CONDITION		MIN		TYP	MAX	MIN		TYP	MAX	MIN		TYP	MAX	UNITS

VF		IF = 4A, TC = +25oC				-		-	2.1	-		-	2.1	-		-	2.1	V
VF		IF = 4A, TC = +150oC				-		-	1.7	-		-	1.7	-		-	1.7	V
I	R	V	R	= 400V, T	= +25oC	-		-	100	-		-	-	-		-	-	μA
	R		R	C
		V	R	= 500V, T	= +25oC	-		-	-	-		-	100	-		-	-	μA
			R	C
		V	R	= 600V, T	= +25oC	-		-	-	-		-	-	-		-	100	μA
			R	C
I	R	V	R	= 400V, T	= +150oC	-		-	500	-		-	-	-		-	-	μA
	R		R	C
		V	R	= 500V, T	= +150oC	-		-	-	-		-	500	-		-	-	μA
			R	C
		V	R	= 600V, T	= +150oC	-		-	-	-		-	-	-		-	500	μA
			R	C
tRR		IF = 1A, dIF/dt = 200A/μs				-		-	30	-		-	30	-		-	30	ns
		IF = 4A, dIF/dt = 200A/μs				-		-	35	-		-	35	-		-	35	ns
tA		IF = 4A, dIF/dt = 200A/μs				-		16	-	-		16	-	-		16	-	ns
tB		IF = 4A, dIF/dt = 200A/μs				-		7	-	-		7	-	-		7	-	ns
QRR		IF = 4A, dIF/dt = 200A/μs				-		45	-	-		45	-	-		45	-	nC
CJ		VR = 10V, IF = 0A				-		15	-	-		15	-	-		15	-	pf
RθJC						-		-	3	-		-	3	-		-	3	oC/W
DEFINITIONS

VF = Instantaneous forward voltage (pw = 300μs, D = 2%).

IR = Instantaneous reverse current.

tRR = Reverse recovery time (See Figure 2), summation of tA + tB. tA = Time to reach peak reverse current (See Figure 2).

tB = Time from peak IRM to projected zero crossing of IRM based on a straight line from peak IRM through 25% of IRM (See Figure 2).

QRR = Reverse recovery charge.

CJ = Junction Capacitance.

RθJC = Thermal resistance junction to case.

EAVL = Controlled avalanche energy. (See Figures 10 and 11). pw = pulse width.

D = duty cycle.

V1 AMPLITUDE CONTROLS IF			+V3
V2 AMPLITUDE CONTROLS dIF/dt			t1 ³ 5tA(MAX)
	R1	Q2	t1 ³ 5tA(MAX)
L1 = SELF INDUCTANCE OF R4		Q2	t2 > tRR
+ LLOOP			t2 > tRR
+ LLOOP	Q1		t3 > 0
+V1	Q1		L1 £ tA(MIN)
+V1			L1 £ tA(MIN)
0			R4	10
0			LLOOP		dIF		tRR
	t2			IF	dIF
					dt
					dt	tA	tB
t1	R2		DUT	0		tA	tB
t1			DUT	0
			Q4
	t3						0.25 IRM
0	C1		R4				IRM
0	Q3						VR
	Q3						VR
-V2	R3		-V4
						VRM

FIGURE 1. tRR TEST CIRCUIT

FIGURE 2. tRR WAVEFORMS AND DEFINITIONS

7-6

RHRD440, RHRD450, RHRD460, RHRD440S, RHRD450S, RHRD460S

Typical Performance Curves

	20
(A)	10		+175oC
(A)
CURRENT			+100oC
			+100oC
FORWARD,	1				+25oC
					+25oC
F
I
	0.5	0.5	1
	0	0.5	1	1.5	2	2.5	3
			VF , FORWARD VOLTAGE (V)
FIGURE 3. TYPICAL FORWARD CURRENT vs FORWARD
		VOLTAGE DROP
	30				TC = +25oC, dIF/dt = 200A/μs
	30
(ns)	25
(ns)				tRR
TIMES	20			tRR
RECOVERYt,	15			tB
				tA
	10
	5
	0
	0.5		1				4
			IF , FORWARD CURRENT (A)

FIGURE 5. TYPICAL tRR, tA AND tB CURVES vs FORWARD CURRENT

TC = +175oC, dIF/dt = 200A/μs

	50
(ns)	tRR
TIMES	40
RECOVERY	tB
	30
	tA
	20
t,	10
	10

0.5

IF , FORWARD CURRENT (A)

FIGURE 7. TYPICAL tRR, tA AND tB CURVES vs FORWARD CURRENT AT 175oC

	500
	+175oC
(μA)	100
(μA)
CURRENT	10
	+100oC
REVERSE	1
REVERSE	0.1
	0.1
	+25	o	C
,	+25		C
,

R	0.01
I

0.001

0	100	200	300	400	500	600
		VR , REVERSE VOLTAGE (V)

FIGURE 4. TYPICAL REVERSE CURRENT vs REVERSE

		VOLTAGE
	50	TC = +100oC, dIF/dt = 200A/μs
	50
(ns)	40
(ns)
TIMES	30	tRR
		tRR
RECOVERYt,
RECOVERYt,	20	tB
		tA
	10

0.5

IF , FORWARD CURRENT (A)

FIGURE 6. TYPICAL tRR, tA AND tB CURVES vs FORWARD CURRENT AT 100oC

(A)	5
CURRENT	4
	4
FORWARD					DC
FORWARD	3
	3
			SQ. WAVE
AVERAGE,	2
AVERAGE,	1
	1
F(AV)	0
I	0	150	155	160	165	170	175
	145	150	155	160	165	170	175

TC , CASE TEMPERATURE (oC)

FIGURE 8. CURRENT DERATING CURVE FOR ALL TYPES

7-7

RHRD440, RHRD450, RHRD460, RHRD440S, RHRD450S, RHRD460S

Typical Performance Curves (Continued)

(pF)

CAPACITANCE

JUNCTION

0 0

100

150

200

VR , REVERSE VOLTAGE (V)

FIGURE 9. TYPICAL JUNCTION CAPACITANCE vs REVERSE VOLTAGE

Test Circuit and Waveforms

IMAX = 1A

L = 40mH

R < 0.1Ω

AVL

= 1/2LI2

/(V

- V

)]

AVL

Q1 AND Q2 ARE 1000V MOSFETs

VDD

130Ω

1MΩ

DUT

VAVL

12V

CURRENT

130Ω

SENSE

I V

VDD

12V

FIGURE 10. AVALANCHE ENERGY TEST CIRCUIT

FIGURE 11. AVALANCHE CURRENT AND VOLTAGE

WAVEFORMS

7-8

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