72R185XF Littelfuse Inc, 72R185XF Datasheet

72R185XF

Manufacturer Part Number

72R185XF

Description

PTC RESETTABLE 72V 1.85A RADIAL

Manufacturer

Littelfuse Inc

Series

POLYFUSE® 72Rr

Datasheet

1.72R020XU.pdf (7 pages)

Specifications of 72R185XF

R Min/max

0.080 ~ 0.190 Ohm

Voltage - Max

72V

Time To Trip

12.6s

Current - Hold (ih) (max)

1.85A

Current - Trip (it)

3.7A

Current - Max

40A

Package / Case

Radial

Holding Current

1.85A

Tripping Current

3.7A

Initial Resistance Max

0.19ohm

Operating Voltage

72VDC

Ptc Fuse Case

Radial Lead

Initial Resistance Min

0.08ohm

External Depth

3.1mm

Rohs Compliant

Yes

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

72R185X
F3203

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Speciﬁcations are subject to change without notice.

Please refer to www.littelfuse.com/series/72R.html for current information.

* Effective January 1, 2010, all 72R PTC products will be manufactured Halogen Free (HF). Existing Non-Halogen Free 72R PTC products may continue to be sold, until supplies are depleted.

hold

trip

max

min

Agency Approvals

AGENCY

Electrical Characteristics

= Power dissipated from device when in the tripped state at 23°C still air.

= Trip current: minimum current at which the device will trip in 23°C still air.

Part Number

= Hold current: maximum current device will pass without tripping in 23°C still air.

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

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

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

72R300X

72R020X

72R025X

72R030X

72R040X

72R050X

72R065X

72R075X

72R090X

72R135X

72R160X

72R185X

72R250X

72R375X

72R110X

AGENCY FILE NUMBER

E183209

R50119318

72R Series

3.00

0.20

0.25

0.30

0.40

0.50

0.65

0.75

0.90

1.35

1.60

1.85

2.50

3.75

1.10

(A)

hold

0.40

0.50

0.60

0.80

2.20

2.70

3.20

3.70

5.00

6.00

1.00

1.30

1.50

1.80

7 .50

(A)

trip

(Vdc)

max

Radial Leaded > 72R Series

POLYFUSE

(A)

max

Revised: July 12, 2010

0.41

0.45

0.49

0.56

0.77

0.88

0.92

0.99

1.50

1.70

1.90

2.10

2.50

2.80

3.20

typ.

(W)

max

)

Resettable PTCs

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

and ﬂame.

Current

1max

Description

The 72R Series is designed to provide overcurrent

protection to 72Vdc maximum voltage with a maximum

40A short circuit rating.

Features

Applications

12.50

15.00

18.75

2.00

2.50

3.25

3.75

4.50

5.50

6.75

8.00

9.25

1.00

1.25

1.50

40A short circuit rating

Maximum Time

(A)

and Halogen Free*

range of low voltage power

supplies

= Maximum resistance of device at 23°C measured one hour after tripping or reﬂow

soldering of 260°C for 20 sec.

To Trip

(Sec.)

24.00

Time

12.60

15.60

19.80

11.40

2.20

2.50

3.00

3.80

4.00

5.30

6.30

8.20

9.60

7 .20

0.880

0.550

0.500

0.310

0.250

0.200

0.150

0.120

0.090

0.080

0.050

0.040

0.030

1.830

1.250

(Ω)

min

Resistance

general electronics using a

low voltage power supply

4.400

3.000

0.720

0.600

0.470

0.380

0.300

0.220

0.080

2.100

1.290

0.190

0.130

0.100

1.170

(Ω)

1max

Approvals

Agency

72R Series

Related parts for 72R185XF

72R185XF Summary of contents

Page 1

Series Agency Approvals AGENCY AGENCY FILE NUMBER E183209 R50119318 Electrical Characteristics Part Number hold trip (A) (A) (Vdc) 72R020X 0.20 0.40 72 72R025X 0.25 0.50 72 72R030X 0.30 0.60 72 72R040X 0.40 0.80 72 72R050X 0.50 ...

Page 2

POLYFUSE Temperature Rerating -40°C -20°C Part Number 72R020X 0.31 0.27 72R025X 0.39 0.34 72R030X 0.47 0.41 72R040X 0.62 0.54 72R050X 0.78 0.68 72R065X 1.01 0.88 72R075X 1.16 1.02 72R090X 1.40 1.22 72R110X 1.71 1.50 72R135X 2.09 1.84 72R160X 2.48 2.18 ...

Page 3

Soldering Parameters - Wave Soldering Refer to the condition recommended by the ﬂux manufacturer. Pre-Heating Zone Max. ramping rate should not exceed 4°C/Sec. Max. solder temperature should not Soldering Zone exceed 260°C Cooling Zone Cooling by natural convection in air. ...

Page 4

POLYFUSE Dimensions Part Number Inches mm Inches Max. Max. Max. 72R020X 0. 0.46 72R025X 0. 0.50 72R030X 0. 0.50 72R040X 0. 0.53 72R050X 0. 0.54 ...

Page 5

... Littelfuse, Inc Speciﬁcations are subject to change without notice. ...

Page 6

POLYFUSE Tape and Ammo Speciﬁcations Devices taped using EIA468-B/IE286-2 standards. See table below and Figure 1 for details. Dimension Carrier tape width Hold down tape width Top distance between tape edges Sprocket hole position Sprocket hole diameter* Abscissa to plane ...

Page 7

Tape and Ammo Diagram Δh Δ © 2010 Littelfuse, Inc Speciﬁcations are subject to change without notice. Please refer to www.littelfuse.com/series/72R.html for current information. POLYFUSE ® Resettable PTCs Radial ...

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