© 2017 Littelfuse, Inc.

Specifications are subject to change without notice.

Revised: 02/23/17

General Purpose ESD Protection - SP05 Series

Time

25

time to peak temperature

Preheat

Preheat

Ramp-up

Ramp-up

Ramp-down

Ramp-do

Critical Zone

Critical Zone

Reflow Condition

Pb – Free assembly

Pre Heat

-Temperature Min (T

150°C

-Temperature Max (T

200°C

-Time (min to max) (t

60 – 180 secs

Average ramp up rate (Liquidus) Temp

(T

5°C/second max

T

5°C/second max

Reflow

-Temperature (T

217°C

-Temperature (t

60 – 150 seconds

PeakTemperature (T

Time within 5°C of actual peak

Temperature (t

20 – 40 seconds

Ramp-down Rate

5°C/second max

Time 25°C to peakTemperature (T

8 minutes Max.

Do not exceed

260°C

Soldering Parameters

Package Dimensions — SOT143

503B

E

E1

c

e

e1

1

2

4

3

b2

b

A1

A

D

L

L1

3.40 (.134")

3.60 (.140")

0.80 (.032")

1.00 (.040")

2.20

(.087")

REF

1.90

(.075")

1.70

(.067")

1.00 (.040")

1.20 (.048")

0.80 (.032")

1.00 (.040")

BSC

MAX

1.40 (.055")

SP0503BAHTG - SOT143-4

Package

SOT143-4

Pins

4

JEDEC

TO-253

Millimeters

Inches

Min

Max

Min

Max

A

0.8

1.22

0.03

0.048

A1

0.05

0.15

0.002

0.006

b

0.30

0.50

0.012

0.020

b2

0.76

0.89

0.030

0.035

c

0.08

0.20

0.003

0.008

D

2.80

3.04

0.110

0.120

E

2.10

2.64

0.082

0.104

E1

1.20

1.40

0.047

0.055

e

1.92 BSC

0.076 BSC

e1

0.20 BSC

0.008 BSC

L

0.4

0.6

0.016

0.024

L1

0.550 REF

0.022 REF

503B

E

E1

c

e

e1

1

2

4

3

b2

b

A1

A

D

L

L1

3.40 (.134")

3.60 (.140")

0.80 (.032")

1.00 (.040")

2.20

(.087")

REF

1.90

(.075")

1.70

(.067")

1.00 (.040")

1.20 (.048")

0.80 (.032")

1.00 (.040")

BSC

MAX

1.40 (.055")

Recommended Pad Layout