LITEON SMB20A, SMB20CA, SMB22, SMB22A, SMB22C Datasheet

POWER	SMB SERIES
LITE ON SEMICONDUCTOR

SURFACE MOUNT

UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS

FEATURES

Rating to 200V VBR

For surface mounted applications

Reliable low cost construction utilizing molded plastic technique

Plastic material has UL flammability classification 94V-O

Typical IR less than 1uA above 10V

Fast response time: typically less than 1.0ps for Uni-direction,less than 5.0ns for Bi-direction,form 0 Volts to BV min

MECHANICAL DATA

Case : Molded plastic

Polarity : by cathode band denotes uni-directional device none cathode band denotes bi-directional device Weight : 0.003 ounces, 0.093 gram

STAND-OFF VOLTAGE - 6.8 to 200 Volts POWER DISSIPATION - 600 WATTS

SMB

				SMB
A			DIM.	MIN.	MAX.
			A	4.06	4.57
B			B	3.30	3.94
		C	C	1.96	2.21
			D	0.15	0.31
			E	5.21	5.59
G			F	0.05	0.20
H	F	D	G	2.01	2.62
			H	0.76	1.52
E
			All Dimensions in millimeter

MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS

Ratings at 25C ambient temperature unless otherwise specified.

Single phase, half wave, 60Hz, resistive or inductive load.

For capacitive load, derate current by 20%

CHARACTERISTICS	SYMBOLS	VALUE		UNIT
PEAK POWER DISSIPATION AT TA = 25 C,	PPK	Minimum 600		WATTS
TP = 1ms (Note 1,2)
Peak Forward Surge Current 8.3ms
single half sine-wave super imposed	IFSM	100		AMPS.
on rated load (Note 3)
(JEDEC METHOD)
Steady State Power Dissipation at TL =75 C	PM(AV)	5.0		WATTS
Maximum Instantaneous forward voltage	VF	SEE NOTE 4		Volts
at 50A for unidirectional devices only (Note 3)
Operating Temperature Range	TJ	-55 to +150		C
Storage Temperature Range	TSTG	-55 to +175		C
NOTES : 1. Non-repetitive current pulse, per fig. 3 and derated above TA= 25 C per fig.1.			REV. 1, 24-May-2000

2.Thermal Resistance junction to Lead

3.8.3ms single half-sine wave duty cycle= 4 pulses maximum per minute (unidirectional units only).

4.VF= 3.5V on SMB6.8 thru SMB90A devices and VF= 5.0V on SMB100 thru SMB200A devices.

RATING AND CHARACTERISTIC CURVES SMB SERIES

LITEON

PEAK PULSE DERATING IN % OF PEAK POWER OR CURRENT

		FIG.1 - PULSE DERATING CURVE						CURRENT,	FIG.2 - MAXIMUM NON-REPETITIVE SURGE CURRENT
100										120
										100
75								FORWARDSURGE
									AMPERES	80
50										60	Pulse Width 8.3ms
25										40
	10 X 1000 WAVEFORM AS							PEAK		20	Single Half-Sine-Wave
0	DEFINED BY R.E.A.									0
											(JEDEC METHOD)
0	25	50	75	100	125	150	175	200		1	2	5	10	20	50	100

AMBIENT TEMPERATURE, C

NUMBER OF CYCLES AT 60Hz

FIG.3 - PULSE WAVEFORM

FIG.4 - TYPICAL JUNCTION CAPACITANCE

IPPEAK PULSE CURRENT , (%)

100

50

0

TR=10us

Peak value (IRSM)

IRSM

Half value=

2

Pulse width (TP) is defined

as that point where the

peak current decays to

50% of IRSM

10 x 1000 waveform as

TJ=25 C

defined by R.E.A.

TP

0

1.0

2.0

3.0

4.0

T, TIME ( ms )

10000

	, (pF)	1000
	CAPACITANCE
		100
		10

1

	FIG.5 - PULSE RATING CURVE					(W)
100							5.0
				TA=150 C		STEADY STATE POWER DISSIPATION	4.0
			NON-REPETITIVE
10			PULSE WAVEFORM
			SHOWN IN FIG 3.				3.0
							2.0
1.0
POWERPEAKPWKP)(,	5.0mm LEAD AREAS						1.0
0.1						PM(AV)	0.0
0.1us	1.0us	10us	100us	1.0ms	10ms		0
		TP, PULSE WIDTH

	Uni-directional
	TJ = 25 C
Bi-directional
10	100	1000

STAND-OFF VOLTAGE, VOLTS

FIG.6 - STEADY STATE POWER DERATING CURVE

60Hz RESISTIVE OR

INDUCTIVE LOAD

25

50

75

100

125

150

175

200

TL, LEAD TEMPERATURE

REV. 1, 24-May-2000