PolySwitch®

PTC Devices

Overcurrent Protection Device

PRODUCT: SRP420F

DOCUMENT: SCD25985

REV LETTER: E

REV DATE: JULY 26, 2016

PAGE NO.: 1 OF 2

© 2016 Littelfuse, Inc.

Specifications are subject to change without notice.

littelfuse.com

Revised July 26, 2016

Specification Status: Released

Electrical Rating

Voltage: 30V MAX

Current: 100A MAX

Chip Size: 13.1x15.9mm

Leads: Nickel 1/4H

0.125mm nominal thickness

Tape:

Polyester(White)

19.5mm Width

Solder: Lead-free

Lot Marking Ink Color (Green)

Marking:

Manufacturer's Mark

420

Lot Identification

Part Identification

ORIENTATION MARK (Blue)

TABLE I. DIMENSIONS:

A

B

C

D

E

F

MIN

MAX

MIN

MAX

MIN

MAX

MIN

MAX

MIN

MAX

MIN

MAX

mm: 30.6

32.4

12.9

13.6

0.5

1.1

5.0

7.5

5.0

7.5

6.0

6.7

in*:

(1.20)

(1.28)

(0.51)

(0.54)

(0.02)

(0.04)

(0.20)

(0.30)

(0.20)

(0.30)

(0.24)

(0.26)

*Rounded off approximation

TABLE II. PERFORMANCE RATINGS: As measured in Muller Kelvin Clips Model BU-75K.

I HOLD

CURRENT TRIP LIMITS

TIME TO

TRIP

REFERENCE

RESISTANCE

ONE-HOUR

POST-TRIP

RESISTANCE

TRIPPED-

STATE

POWER

DISSIPATION

AMPS

20°C

AMPS

AT 0°C

AMPS

AT 20°C

AMPS

AT 60°C

SECONDS AT

20°C,20.0A

OHMS

AT 20°C

OHMS

AT 20°C

WATTS AT

20°C, 30V

HOLD HOLD

TRIP

HOLD TRIP HOLD

TRIP

TYP

MAX

MIN

MAX

MIN

TYP

TYP

MAX

4.2

5.1

9.5

4.2

7.6

3.0

5.5

--

6

0.012 0.024

0.012

0.040

--

2.9

Agency Recognition:

UL, TUV, CSA

Reference Document:

PS300

Precedence:

This specification takes precedence over documents referenced herein.

Effectivity:

Reference documents shall be the issue in effect on the date of invitation for bid.

CAUTION:

Operation beyond the rated voltage or current may result in rupture, electrical arcing or flame.

Materials Information

ROHS Compliant

ELV Compliant

Pb-Free