Littelfuse SACB User Manual

Transient Voltage Suppression Diodes

Surface Mount – 500W > SACB series

SACB Series

Uni-directional

Agency Approvals

AGENCY AGENCY FILE NUMBER

E230531

Maximum Ratings and Thermal Characteristics
(T

=25°C unless otherwise noted)

A

Parameter Symbol Value Unit

Peak Pulse Power Dissipation at
ta=25°C by 10/1000μs Waveform
(g.1)( Note 1)
Power Dissipation on Innite Heat
Sink at TL=50ºC
Peak Pulse Power Dissipation at
Ta=25ºC by 10/1000μs Waveform
(Fig. 3) (Note 1)

Operating Junction and Storage
Temperature Range
Typical Thermal Resistance Junction

to Lead

Typical Thermal Resistance Junction
to Ambient

Note:

1. Non-repetitive current pulse , per Fig. 3 and derated above T

P

PPM

P

M(AV)

I

PPM

, T

T

J

R

uJL

R

uJA

500 W

3.0 W

See

Table 1

-55 to 150 °C

STG

30 °C/W

120 °C/W

= 25°C per Fig. 2.

A

Amps

RoHS

Description

SACB series is designed specifically to protect sensitive
electronic equipment from voltage transients induced by
lightning and other transient voltage events.

Features

• For surface mounted

applications in order to
optimize board space

• Low prole package

• Built-in strain relief

• Typical failure mode is
short from over-specied

voltage or current

• Whisker test is conducted

based on JEDEC
JESD201A per its table 4a
and 4c

• IEC-61000-4-2 ESD

15kV(Air), 8kV (Contact)

• ESD protection of data

lines in accordance with
IEC 61000-4-2 (IEC801-2)

• EFT protection of data

lines in accordance with
IEC 61000-4-4 (IEC801-4)

•

VBR @TJ= VBR@25°C × (1+αT

x (TJ - 25))

(αT: Temperature Coefcient)

• Glass passivated chip

• 500W peak pulse power

capability at 10/1000μs

waveform, repetition rate
(duty cycles):0.01%

• Fast response time:

typically less than 1.0ps
from 0V to BV min

• Excellent clamping

capability

• Low incremental surge

resistance

• High temperature

soldering guaranteed:

260°C/40 seconds at

terminals

• Plastic package has
underwriters laboratory
ammability 94V-O

• Meet MSL level1, per

J-STD-020, LF maximum
peak of 260°C

• Matte tin lead–free plated

• Halogen free and RoHS

compliant

junction

Applications

TVS devices are ideal for the protection of I/O Interfaces,
V

bus and other vulnerable circuits used in Telecom,

CC

Computer, Industrial and Consumer electronic applications.

Additional Information

Datasheet

Resources

Specifications are subject to change without notice.

Samples

© 2014 Littelfuse, Inc.

Revised: 01/20/14

Transient Voltage Suppression Diodes

0.1µ

1.0µ

10µs

100µs

1.0ms

10ms

Non-repetitive Pulse

Current Waveforms

Square

P

td=7tp

td

td

P

Half Sine

Impulse

td

P

Exponential

Decay

SACB: Revised Figure 1 - Peak Pulse Power Rating Curve

Surface Mount – 500W > SACB series

Electrical Characteristics (T

Stand-Off

Part

Number

Marking

Code

Voltage

(Note1) V

(V)

=25°C unless otherwise noted)

A

BR

Maximum

Reverse
Leakage

at V

(V)

Minimum

Breakdown

Voltage at

R

=1.0MA

I

T

V

A)

R IR

Maximum

Clamping

Voltage at

I

=5.0A

PP

V

C

(V)

Maximum

Peak

Pulse

Current

per (Fig.3)

(A)

I

PP

Maximum

Junction

Capacitance

at

0 Volts (pF)

Working

Inverse

Blocking

Voltage

V

(V)

WIB

Inverse
Blocking
Leakage

Current at

@ I

V

WIB

IB

(mA)

Peak Inverse

Blocking

Voltage V

(V)

PIB

Recognition

SACB5.0 SKE 5.0 7.60 300 10.0 44.0 45 75 1.0 100 X
SACB6.0 SKG 6.0 7.90 300 11.2 41.0 45 75 1.0 100 X
SACB7.0 SKM 7.0 8.33 300 12.6 38.0 45 75 1.0 100 X
SACB8.0 SKR 8.0 8.89 100 13.4 36.0 45 75 1.0 100 X
SACB8.5 SKT 8.5 9.44 50 14.0 34.0 45 75 1.0 100 X

SACB10 SKX 10.0 11.10 5 16.3 29.0 45 75 1.0 100 X
SACB12 SLE 12.0 13.30 5 19.0 25.0 45 75 1.0 100 X
SACB15 SLM 15.0 16.70 5 23.6 20.0 45 75 1.0 100 X
SACB18 SLT 18.0 20.00 5 28.8 15.0 45 75 1.0 100 X
SACB22 SLX 22.0 24.40 5 35.4 14.0 45 75 1.0 100 X
SACB26 SME 26.0 28.90 5 42.3 11.1 45 75 1.0 100 X
SACB30 SMK 30.0 33.30 5 48.6 10.0 45 75 1.0 100 X
SACB36 SMP 36.0 40.00 5 60.0 8.6 45 75 1.0 100 X
SACB45 SMV 45.0 50.00 5 77.0 6.8 45 150 1.0 200 X
SACB50 SMZ 50.0 55.50 5 88.0 5.8 45 150 1.0 200 X

Ratings and Characteristic Curves (T

Ratings and Characteristic Curves (T

=25°C unless otherwise noted

= 25°C unless otherwise noted)

A

A

Figure 1 - Peak Pulse Power Rating Curve Figure 2 - Pulse Derating Curve

100

30

10

- Peak Pulse Power (kW)

".5"

PK

1

PPM

I

PK

PK

0.1
s

s

Waveform shown in Fig. 3

T

=25°C

A

td - Pulse Width (sec.)

100

Average Power

75

50

Peak Power

(Single Pulse)

25

Percentage of Rated Power (%)

0

0255075100 125 150

TL - Lead Temperature (ºC)

UL

Figure 3 - Pulse Waveform

150

RSM

100

50

- Peak Pulse Current, % I

PPM

I

0

© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/20/14

tr=10µsec

Peak Value
I

PPM

t

d

0

1.0 2.0 3.0 4.0

Half Value

I

PPM

I

PPM

( )

2

10/1000µsec. Waveform
as defined by R.E.A

t-Time (ms)

TJ=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of I

PPM

Figure 4 - AC Line Protection Application

Low Capacitance

Application Note: Device must be used with two
units in parallel, opposite in polarity as shown in
circuit for AC signal line protection.