Littelfuse LR Series Manual de usuario descargar pdf

113

Revised: June 4, 2010

POLYFUSE

Resettable PTCs

POLYFUSE

Resettable PTCs

LR Series

Axial Lead Battery Strap Type > LR Series

Speciﬁcations are subject to change without notice.

Please refer to www.littelfuse.com/series/LR.html for current information.

LR Series

The new LR Series device provides reliable, noncycling

protection against overcharging and short circuits events

for rechargeable battery cells where resettable protection

is desired.

Agency Approvals

Electrical Characteristics

Part Number

hold

(A)

trip

(A)

max

(Vdc)

max

(A)

max.

(W)

Maximum Time

To Trip

Resistance

Agency

Approvals

Current

(A)

Time

(Sec.)

min

(Ω)

typ

(Ω)

1max

(Ω)

15LR190 1.9 3.9 15 100 1.2 9.50 5.00 0.039 0.072 0.102

15LR190S 1.9 3.9 15 100 1.2 9.50 5.00 0.039 0.072 0.102

15LR260 2.6 5.8 15 100 2.5 13.00 5.00 0.020 0.042 0.063

15LR260S 2.6 5.8 15 100 2.5 13.00 5.00 0.020 0.042 0.063

15LR380 3.8 8.3 15 100 2.5 19.00 5.00 0.013 0.026 0.037

20LR450 4.5 8.9 20 100 2.5 22.50 5.00 0.011 0.020 0.028

20LR550 5.5 10.5 20 100 2.8 27.50 5.00 0.009 0.016 0.022

20LR600 6.0 11.7 20 100 2.8 30.00 5.00 0.007 0.014 0.019

20LR730 7.3 14.1 20 100 3.3 30.00 5.00 0.006 0.012 0.015

hold

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

trip

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

max

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

max

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

max

)

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

min

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

typ

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

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.

Description

Features

Applications

• RoHS compliant and

lead–free

• Weldable Nickel terminals

• Slim, low proﬁle design

• Compact design saves

board space

• Low resistance

• Fast trip time

• Rechargeable battery cell

protection

• Portable Computers

• Camcorders

AGENCY AGENCY FILE NUMBER

E183209

R50119583

1 2 3 4

Indice de contenidos

Pagina 1 - LR Series

Pagina 2

Pagina 3

Pagina 4 - 15 LR 190 S U

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