MF-LR550S Bourns Inc., MF-LR550S Datasheet

PTC Resettable Fuses 20Volt Imax 100Amps Slotted Lead

MF-LR550S

Manufacturer Part Number

MF-LR550S

Description

PTC Resettable Fuses 20Volt Imax 100Amps Slotted Lead

Manufacturer

Bourns Inc.

Type

PTC Resettable Fusesr

Series

MF-LRr

Datasheet

1.MF-LR730.pdf (4 pages)

Specifications of MF-LR550S

Hold Current

5.5 Amps

Trip Current

10.5 Amps

Current Rating (max)

100 Amps

Resistance

0.019 Ohms

Maximum Voltage

20 VoltsDC

Termination Style

Axial

Mounting Style

Snap In

Current Rating

100 Amps

Dimensions

21.6 mm L x 7.5 mm W x 1 mm H

Operating Temperature Range

- 40 C to + 85 C

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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*I trip is approximately two times I hold.

Operating/Storage Temperature ........................-40 °C to +85 °C

Maximum Device Surface Temperature

Passive Aging......................................................+70 °C, 1000 hours ....................................±10 % typical resistance change

Humidity Aging....................................................+85 °C, 85 % R.H. 7 days ..........................±10 % typical resistance change

Vibration ..............................................................MIL-STD-883C, Condition A ......................No change

Test

Visual/Mech. ......................................................Verify dimensions and materials..................Per MF physical description

Resistance ..........................................................In still air @ 23 °C ........................................Rmin ≤ R ≤ R1max

Time to Trip ........................................................At specified current, Vmax, 23 °C ..............T ≤ max. time to trip (seconds)

Hold Current ......................................................30 min. at Ihold............................................No trip

Trip Cycle Life ....................................................Vmax, Imax, 100 cycles ..............................No arcing or burning

Trip Endurance....................................................Vmax, 48 hours ..........................................No arcing or burning

UL File Number ..................................................E 174545S

CSA File Number ................................................CA 110338

TÜV File Number ................................................R2057213

Electrical Characteristics

TÜV recognition pending.

MF-LR190

MF-LR190S

MF-LR260

MF-LR260S

MF-LR380

MF-LR450

MF-LR550

MF-LR600

MF-LR730

MF-LR730/20*

MF-LR900/20*

Thermal Derating Chart - I hold (Amps)

in Tripped State ................................................125 °C

MF-LR190

MF-LR190S

MF-LR260

MF-LR260S

MF-LR380

MF-LR450

MF-LR550

MF-LR600

MF-LR730

MF-LR730/20

MF-LR900/20

Model

Environmental Characteristics

Test Procedures And Requirements For Model MF-LR Series

Model

V max.

Volts

-40 °C

10.5

12.7

2.8

3.8

5.5

6.5

8.0

8.7

I max.

Amps

100

-20 °C

11.4

2.5

3.4

4.9

5.8

7.1

7.8

9.5

I hold

Hold

1.90

2.60

3.80

4.50

5.50

6.00

7.30

9.00

MF-LR Series -

Test Conditions

Amperes

At 23 °C

Features

Axial leaded

Fully compatible with current

industry standards

Weldable nickel terminals

Very low internal resistance

Operating currents to 9.0 Amps

RoHS compliant*

0 °C

10.0

2.3

3.1

4.4

5.3

6.2

7.1

8.6

10.50

11.70

14.10

16.70

I trip

3.90

5.80

8.30

8.90

Trip

Ambient Operating Temperature

23 °C

1.9

2.6

3.8

4.5

5.5

6.0

7.3

9.0

0.039

0.020

0.013

0.011

0.009

0.007

0.006

Min.

Resistance

PTC Resettable Fuses

At 23 °C

Initial

Ohms

40 °C

Customers should verify actual device performance in their specific applications.

1.6

2.2

3.3

3.9

4.7

5.2

7.4

7.5

0.072

0.042

0.026

0.020

0.019

0.014

0.012

0.010

Max.

Accept/Reject Criteria

50 °C

1.5

2.0

3.0

3.6

4.3

4.7

6.8

1 Hour (R 1 )

Resistance

At 23 °C

Post-Trip

Ohms

0.102

0.083

0.037

0.028

0.022

0.019

0.015

0.014

Max.

Applications

Agency recognition:

Any application that requires protection

at low resistances

Rechargeable battery packs

Cellular phones

Laptop computers

RoHS Directive 2002/95/EC Jan 27 2003 including Annex

Specifications are subject to change without notice.

60 °C

Amperes Seconds

At 23 °C

1.4

1.9

2.8

3.3

4.0

4.4

6.2

13.0

19.0

22.5

27.5

30.0

45.0

9.5

Max. Time

To Trip

At 23 °C

70 °C

1.2

1.7

2.5

2.9

3.6

3.9

5.5

5.0

Dissipation

At 23 °C

Tripped

Watts

Power

85 °C

T V Rheinland

Typ.

1.2

1.3

2.5

1.4

2.8

3.0

1.0

1.4

2.1

2.5

3.0

3.3

4.5

Related parts for MF-LR550S

MF-LR550S Summary of contents

Page 1

... Passive Aging......................................................+70 °C, 1000 hours ....................................±10 % typical resistance change Humidity Aging....................................................+85 ° R.H. 7 days ..........................±10 % typical resistance change Vibration ..............................................................MIL-STD-883C, Condition A ......................No change Test Procedures And Requirements For Model MF-LR Series Test Visual/Mech. ......................................................Verify dimensions and materials..................Per MF physical description Resistance ..........................................................In still air @ 23 °C ........................................Rmin ≤ R ≤ R1max Time to Trip ........................................................At specified current, Vmax, 23 ° ...

Page 2

... MF-LR Series - PTC Resettable Fuses Product Dimensions A Model Min. Max. 19.9 22.1 MF-LR190 (0.783) (0.870) 19.9 22.1 MF-LR190S (0.783) (0.870) 20.9 23.1 MF-LR260 (0.823) (0.909) 20.9 23.1 MF-LR260S (0.823) (0.909) 24.0 26.0 MF-LR380 (0.945) (1.024) 24.0 26.0 MF-LR450 (0.945) (1.024) 35.0 37 ...

Page 3

... Bulk Packaging Designator for Models MF-LR730/20 and MF-LR900/ Tape and Reel*** *Vmax entry applies only to Models MF-LR730/20 & MF-LR900/20. **Slotted Lead Option applies only to Models MF- LR190 & MF-LR260. ***Packaged per EIA 486-B MF-LR SERIES, REV. O, 02/08 Specifications are subject to change without notice. ...

Page 4

... MF-S, MF-LS, MF-LR and MF-VS Series Tape and Reel Specifications Taped Component Dimensions 1.0 + 0.1/ -0 (.039 + .004/-0) DIA. 5.56 ± 0.10 (.219 ± .004) Reel Dimensions 330 (13.0) 48.0 ± 0.3 (1.90 ± .012) 12.0 ± 0.1 (.472 ± .004) 4.0 ± 0.1 (.157 ± ...

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