*

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

Specifications are subject to change without notice.

Customers should verify actual device performance in their specific applications.

Max. Time

Tripped

Ihold

Itrip

To Trip

Power

Resistance

Dissipation

Model

Amperes

Ohms

Amperes

Seconds

Watts

V max.

I max.

at 23

°C

at 23

°C

at 23

°C

at 23

°C

at 23

°C

Volts

Amps

Hold

Trip

RMin.

R1Max.

Max.

Typ.

MF-SMHT136

16

100

1.36

2.72

0.085

0.33

8.0

10.0

2.1

MF-SMHT160

16

100

1.60

3.20

0.050

0.15

8.0

10.0

2.1

Electrical Characteristics

4A

136

4A

136

Features

■

Operating temperature range up to 125 °C

■

Low thermal derating factor

■

Higher hold currents at elevated

temperature

■

Choice of operating currents

■

RoHS compliant*

Applications

■

Protection of automotive circuitry

including engine control modules

■

Overcurrent surge protection of electronic

equipment required to operate at high

operating temperature ranges

■

Resettable fault protection of general

electronic equipment

Thermal Derating Chart - Ihold / Itrip (Amps)

Operating Temperature ..............................................................-40 °C to +125 °C

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

Passive Aging ............................................................................+125 °C, 1000 hours ........................................................±15 % typical resistance change

Humidity Aging ..........................................................................+85 °C, 85 % R.H. 7 days................................................±15 % typical resistance change

Thermal Shock ..........................................................................MIL-STD-202F, Method 107G, ........................................±15 % typical resistance change

+125 °C to -55 °C,10 cycles

Vibration ....................................................................................MIL-STD-883C, Method 2007.1, Condition A..................No change

Environmental Characteristics

Test

Test Conditions

Accept/Reject Criteria

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

Solderability ......................................MIL-STD-202F, Method 208F ................................................95 % min. coverage

Test Procedures And Requirements For Model MF-SMHT Series

Ambient Operating Temperature

Model

-40

°C

-20

°C0 °C

23

°C

40

°C

50

°C

60

°C

70

°C

85

°C

125

°C

MF-SMHT136

1.91 / 3.82 1.72 / 3.44 1.54 / 3.08 1.36 / 2.72 1.18 / 2.36 1.09 / 2.18 1.00 / 2.00 0.91 / 1.82 0.77 / 1.54 0.40 / 0.80

MF-SMHT160

2.15 / 4.30 1.96 / 3.92 1.78 / 3.56 1.60 / 3.20 1.42 / 2.48 1.33 / 2.66 1.24 / 2.48 1.15 / 3.30 1.02 / 2.04 0.64 / 1.28

Circuit Protection Division

Asia-Pacific:

Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116

Europe:

Tel: +41-41 768 5555 • Fax: +41-41 768 5510

The Americas:

Tel: +1-951 781-5500 • Fax: +1-951 781-5700

www.bourns.com