Littelfuse 0402L User Manual

0402L Series

POLY-FUSE® Resettable PTCs

Surface Mount > 0402L Series

Description

The 0402L Series PTC provides surface mount
overcurrent protection for applications where space is at
a premium and resettable protection is desired.

Features

Agency Approvals

AGENCY AGENCY FILE NUMBER

E183209

R50119118

• RoHS compliant, lead-free

and halogen free

• Fast response to fault

currents

• Compact design saves

board space

• Low resistance

Applications

• USB peripherals

• Disk drives

• CD-ROMs

• Plug and play protection

for motherboards and

• Low-prole

• Compatible with high

temperature solders

• 0402 size- the smallest

PPTC in the market
compatible with high
temperature solders

• PDAs / digital cameras

• Game console port

protection

• Tablet and Notebook PCs

• E-readers

peripherals

Electrical Characteristics

Part Number

I

hold

(A)

Maximum Time

Current

(A)

To Trip

Time

(Sec.)

I

V

I

(A)

trip

max

(Vdc)

(A)

max

P d typ.

(W)

Resistance

R

min

(Ω)

R

1max

(Ω)

0402L010SL 0.10 0.30 6 40 0.5 0.50 1. 0 0 0.150 2.000 X X

0402L020SL 0.20 0.50 6 40 0.5 1. 00 1. 0 0 0.100 1.250 X X

0402L035SL 0.35 0.70 6 50 0.5 8.00 0.10 0.050 0.700 X X

0402L050SL 0.50 1. 00 6 50 0.5 8.00 0.10 0.040 0.400 X X

Agency

Approvals

I

= Hold current: maximum current device will pass without tripping in 20°C still air.

hold

I

= Trip current: minimum current at which the device will trip in 20°C still air.

trip

V

= Maximum voltage device can withstand without damage at rated current (I max)

max

I

= Maximum fault current device can withstand without damage at rated voltage (V

max

P d = Power dissipated from device when in the tripped state at 20°C still air.

R

= Minimum resistance of device in initial (un-soldered) state.

min

R

= Maximum resistance of device at 20°C measured one hour after tripping or reow soldering of 260°C for 20 sec.

1max

Caution: Operation beyond the specied rating may result in damage and possible arcing and ame.

)

max

Specifications are subject to change without notice.

© 2014 Littelfuse, Inc.

Revised: 01/17/14

POLY-FUSE® Resettable PTCs

Surface Mount > 0402L Series

Temperature Rerating

Ambient Operation Temperature

-40°C -20°C 0°C 20°C 40°C 50°C 60°C 70°C 85°C

Part Number

0402L010SL 0.15 0.13 0.12 0.10 0.09 0.07 0.06 0.05

0402L020SL 0.29 0.27 0.24 0.20 0.17 0.14 0.11 0.10

0402L035SL 0.51 0.47 0.41 0.35 0.30 0.25 0.20 0.18

0402L050SL 0.74 0.67 0.59 0.50 0.43 0.36 0.29 0.26

Hold Current (A)

0.01

0.03

0.07

0.10

Temperature Rerating Curve

170%

150%

130%

110%

90%

70%

50%

Percentage of Rated Current

30%

10%

-40 -30 -20 -10010 20 30 40 50 60 70 80

Temperature (°C)

Average Time Current Curves

100.00

10.00

1.00

0.10

Time in Seconds

0.01

0.00

0.10 1.00 10.00

The average time current curves and Temperature Rerating curve performance is affected
by a number or variables, and these curves provided as guidance only. Customer must
verify the performance in their application.

Time-to-Trip Curve

A

C

D

B

Current in Amperes

A-0402L010SL
B-0402L020SL
C-0402L035SL
D-0402L050SL

© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/17/14