2920L185 データシートの表示（PDF） - Littelfuse, Inc

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2920L185

POLY-FUSE® Resettable PTCs Surface Mount > 2920L Series

Littelfuse, Inc 

2920L Series

POLY-FUSE® Resettable PTCs

Surface Mount > 2920L Series

RoHS

Agency Approvals

AGENCY AGENCY FILE NUMBER

E183209

R50119118

Description

The 2920L Series PTC provides surface mount overcurrent

protection for medium voltage (≤60V) applications where

resettable protection is desired.

Features

• RoHS compliant, lead-free

and halogen-free

• Fast response to fault

currents

• High voltage

• Low-profile

Applications

• IEE1394 port protection

• P owered ethernet port

protection (IEEE 802.3 af)

• Automotive electronic

control module protection

• Low voltage telecom

equipment protection

Electrical Characteristics

Part Number

2920L030

2920L050

2920L075

2920L075/60

2920L100

2920L125

2920L150

2920L185

2920L200

2920L200/24

2920L250

2920L260

2920L300

2920L300/15

2920L500/16

Marking

I hold

(A)

I trip

V max

I max

(A) (Vdc) (A)

LF030 0.30 0.60 60 10

LF050 0.50 1.00 60 10

LF075 0.75 1.50 30 40

LF075-60 0.75 1.50 60 10

LF100 1.10 2.20 33 40

LF125 1.25 2.50 15 40

LF150 1.50 3.00 33 40

LF185 1.85 3.70 33 40

LF200 2.00 4.00 15 40

LF200-24 2.00 4.00 24 40

LF250 2.50 5.00 15 40

LF260 2.60 5.00 6

40

LF300 3.00 5.00 6

40

LF300-15 3.00 5.00 15 40

LF500-16 5.00 10.00 16 40

Maximum Time

Pd

To Trip

typ.

(W) Current Time

(A)

(Sec.)

1.50 1.50

3.00

1.50 2.50

4.00

1.50 8.00

0.30

1.50 8.00

0.30

1.50 8.00

0.50

1.50 8.00

2.00

1.50 8.00

2.00

1.50 8.00

2.50

1.50 8.00

5.00

1.50 8.00

5.00

1.50 8.00

10.00

1.50 8.00

10.00

1.50 8.00

20.00

1.50 8.00

20.00

2.0 20.00

5.00

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

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

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

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

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

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

R typ = Typical resistance of device in initial (un-soldered) state.

R 1max = Maximum resistance of device at 20°C measured one hour after tripping or reflow soldering of 260°C for 20 sec.

Caution: Operation beyond the specified rating may result in damage and possible arcing and flame.

Resistance

R min

(Ω)

1.200

0.350

0.350

0.300

0.120

0.070

0.080

0.050

0.050

0.050

0.035

0.025

0.015

0.015

0.005

R typ

(Ω)

3.000

0.870

0.670

0.60

0.270

0.160

0.150

0.110

0.090

0.090

0.060

0.050

0.033

0.033

-

R 1max

(Ω)

4.800

1.400

1.000

0.950

0.410

0.250

0.230

0.150

0.125

0.125

0.085

0.075

0.048

0.048

0.025

Agency

Approvals

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

© 2013 Littelfuse, Inc.

Specifications are subject to change without notice.

Revised: 11/12/13

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