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SMD2920P185TF PolyFuse 7351 Surface Mount Resettable Fuses PPTC 1.85A 33V 2920 For Low Voltage Telecom Equipment

China SMD2920P185TF PolyFuse 7351 Surface Mount Resettable Fuses PPTC 1.85A 33V 2920 For Low Voltage Telecom Equipment supplier
SMD2920P185TF PolyFuse 7351 Surface Mount Resettable Fuses PPTC 1.85A 33V 2920 For Low Voltage Telecom Equipment supplier SMD2920P185TF PolyFuse 7351 Surface Mount Resettable Fuses PPTC 1.85A 33V 2920 For Low Voltage Telecom Equipment supplier SMD2920P185TF PolyFuse 7351 Surface Mount Resettable Fuses PPTC 1.85A 33V 2920 For Low Voltage Telecom Equipment supplier SMD2920P185TF PolyFuse 7351 Surface Mount Resettable Fuses PPTC 1.85A 33V 2920 For Low Voltage Telecom Equipment supplier

Large Image :  SMD2920P185TF PolyFuse 7351 Surface Mount Resettable Fuses PPTC 1.85A 33V 2920 For Low Voltage Telecom Equipment

Product Details:

Certification: UL,RoHS
Model Number: LSMD185

Payment & Shipping Terms:

Minimum Order Quantity: 1000 PCS
Price: USD 0.065 to 0.08 Per Pieces
Packaging Details: Tape,1000pcs / Reel
Delivery Time: 10 Workdays
Payment Terms: T/T, Western Union
Supply Ability: 5,000,000 PCS Per Month
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Detailed Product Description
Name: Resettable Fuses PPTC Mounting Style: SMD/SMT
Hold Current: 1.85A Maximum Voltage: 33V
Trip Current: 3.7A Current Rating - Max: 40A
Package / Case: 2920 (7351 Metric) Minimum Operating Temperature: -40C
Maximum Operating Temperature: +85C Type: PolyFuse Resettable PTC
Pd - Power Dissipation: 1.5W

 

SMD2920P185TF PolyFuse 7351 Surface Mount Resettable Fuses PPTC 1.85A 33V 2920 For Low Voltage Telecom Equipment

 

 

Overview

 

The 2920 series provides surface mount resettable overcurrent protection with holding current from 0.3A to 5.0A. This series is suitable for applications with higher holding currant and higher working voltage up to 60V.

 

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Agency Approval 

 

NO Agency
1 UL
2 TUV
3 CSA

 

 

Environmental Compliance

 

Regulation Standard
RoHS 2011/65/EU
Halogen-free IEC 61249-2-21:2003

 

 

Dimension  (unit:mm)

 

SMD2920P185TF PolyFuse 7351 Surface Mount Resettable Fuses PPTC 1.85A 33V 2920 For Low Voltage Telecom Equipment

P/N

Marking

 

A B C D
Min. Max. Min. Max. Min. Max. Min.
LSMD030 T030 6.73 7.98 4.80 5.44 0.75 1.15 0.30
LSMD050 T050 6.73 7.98 4.80 5.44 0.75 1.15 0.30
LSMD075 T075 6.73 7.98 4.80 5.44 0.75 1.15 0.30
LSMD100 T100 6.73 7.98 4.80 5.44 0.65 1.05 0.30
LSMD125 T125 6.73 7.98 4.80 5.44 0.65 1.05 0.30
LSMD150 T150 6.73 7.98 4.80 5.44 0.65 1.50 0.30
LSMD185 T185 6.73 7.98 4.80 5.44 0.65 1.50 0.30
LSMD200 T200 6.73 7.98 4.80 5.44 0.55 0.95 0.30
LSMD250 T250 6.73 7.98 4.80 5.44 0.55 0.95 0.30
LSMD260 T260 6.73 7.98 4.80 5.44 0.45 0.85 0.30
LSMD300 T300 6.73 7.98 4.80 5.44 0.45 0.85 0.30
LSMD300D T300 6.73 7.98 4.80 5.44 0.65 1.50 0.30

 

 

Electrical Characteristics

 

P/N         Max time to trip Power Resistance(Ω)
IH, (A) IT,(A) Vmax,(v) Imax,(A) (A) (Sec.) Pd typ(W) Rmin R1max
LSMD030 0.30 0.60 60 10 1.5 3.0 1.5 0.600 4.800
LSMD050 0.50 1.00 60 10 2.5 4.0 1.5 0.180 1.400
LSMD075 0.75 1.50 33 40 8.0 0.3 1.5 0.100 1.000
LSMD100 1.00 2.00 33 40 8.0 0.5 1.5 0.065 0.410
LSMD125 1.25 2.50 33 40 8.0 2.0 1.5 0.050 0.250
LSMD150 1.50 3.00 33 40 8.0 2.0 1.5 0.035 0.230
LSMD185 1.85 3.70 33 40 8.0 2.5 1.5 0.030 0.150
LSMD200 2.00 4.00 16 40 8.0 4.5 1.5 0.020 0.120
LSMD250 2.50 5.00 16 40 8.0 16.0 1.5 0.020 0.085
LSMD260 2.60 5.20 6 40 8.0 10.0 1.5 0.014 0.075
LSMD300 3.00 6.00 6 40 8.0 20.0 1.5 0.010 0.055
LSMD300D 3.00 5.20 24 20 8.0 20.0 1.5 0.010 0.055
 

 

Note on Electrical Characteristics

 

Vocabulary

Ihold = Hold current: maximum current device will pass without tripping in 23ºC still air.

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

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

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

Pd typ = Typical power dissipated from device when in the tripped state at 23 ºC still air.

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

R1max = Maximum resistance of device at 23 ºC measured one hour after tripping or reflow soldering of 260 ºC for 20 sec. Value specified is determined by using the PWB with 0.150”*1.5oz copper traces.

 

Caution: Operation beyond the specified rating may result in damage and possible arcing and flame. Specifications are subject to change without notice. Po

 

 

Features

 

RoHS compliant and lead-free

Halogen-free

High voltage

Low profile

Fast response to fault current

Compatible with high temperature solders 

 

 

Application

 

Power over Ethernet (POE)

Powered USB for POS and IPC

Automotive electronics control module protection

IEEE 1394 port protection

Low voltage telecom equipment

Industrial control

Security systems 

 

 

Polymeric PTC Selecting Guide

 

a.Determine the following operating parameters for the circuits:

 

*Normal operating current (Ihold)            *Maximum interrupt current (Imax)

*Maximum circuit voltage (Vmax)            *Normal operating temperature surrounding device (minºC/maxºC)

 

b.Select the device form factor and dimension suitable for the application:

 

*Surface Mount Device (SMD)   *Axial Leaded Device (ALD)    *Other Customized Form Factors

*Radial Leaded Device (RLD)    *DISC Device

 

c.Compare the maximum rating for Vmax and Imax of the PPTC device with the circuit in application and make sure the circuit’s requirement does not exceed the device rating.

d.Check that PPTC device’s trip time (time-to-trip) will protect the circuit.

e.Verify that the circuit operating temperature is within the PPTC device’s normal operating temperature range.

f.Verify the performance and suitability of the chosen PPTC device in the application. 

 

 

Thermal Derating Chart – I hold (Amps)

 

P/N Ambient Operating Temperature
-40℃ -20℃ 0℃ 25℃ 40℃ 50℃ 60℃ 70℃ 85℃
LSMD030 0.45 0.40 0.35 0.30 0.25 0.23 0.20 0.17 0.14
LSMD050 0.76 0.67 0.59 0.50 0.42 0.38 0.33 0.29 0.23
LSMD075 1.13 1.01 0.88 0.75 0.62 0.56 0.50 0.44 0.34
LSMD100 1.66 1.47 1.29 1.10 0.91 0.83 0.73 0.64 0.50
LSMD125 1.89 1.68 1.46 1.25 1.04 0.94 0.83 0.73 0.56
LSMD150 2.27 2.01 1.76 1.50 1.25 1.13 1.00 0.87 0.74
LSMD185 2.80 2.47 2.17 1.85 1.54 1.39 1.22 1.07 0.85
LSMD200 3.02 2.68 2.34 2.00 1.66 1.50 1.32 1.16 0.90
LSMD250 3.78 3.35 2.93 2.50 2.08 1.88 1.65 1.45 1.13
LSMD260 3.64 3.25 2.91 2.60 2.26 2.08 1.95 1.74 1.13
LSMD300 4.53 4.02 3.51 3.00 2.52 2.26 1.99 1.75 1.34
LSMD300D 4.53 4.02 3.51 3.00 2.52 2.26 1.99 1.75 1.34
 
 

Typical time to trip at 25℃

 

The Time to Trip curves represent typical performance of a device in a simulated application environment. Actual performance in specific customer applications may differ from these values due to the influence of other variables.

SMD2920P185TF PolyFuse 7351 Surface Mount Resettable Fuses PPTC 1.85A 33V 2920 For Low Voltage Telecom Equipment

A=LSMD030

B=LSMD050

C=LSMD075

D=LSMD100

E=LSMD125

F=LSMD150

G=LSMD185

H=LSMD200

I=LSMD250

J=LSMD260

K=LSMD300

 

 

Package

 

Model                                                                               Qty/Reel

LSMD150/185/300D                                                     1000 pcs

LSMD030 ~ LSMD125                                                  1500 pcs

LSMD200 ~ LSMD300                                                  2000 pcs

Note: Reel packaging per EIA-481-1 standard

Contact Details
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Contact Person: eric.lye

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