Category: Hi-Rel Fuses

FM13

Features

AEM, Inc. is the sole U.S. manufacturer of solid body current limiting fuses produced utilizing thick film technology with subsequent screening and qualification for spacecraft/ satellite applications. AEM, Inc.’s Hi-Rel fuses have been selected by most major space programs and have been in orbit for decades with zero failures.

Applications

Used in military and commercial satellites and spacecraft including manned space vehicles

  • Protection of power supplies, batteries and solar arrays
  • Isolation of redundant and branch circuits
  • Short circuit protection from fired squib and jettison circuitry

Features

  • Consistent clearing times achieved at overload currents regardless of vacuum conditions
  • Solid body construction without outgassing and not subjected to the de-rating factors of MIL-STD-975
  • Solid body construction capable of withstanding greater vibration and shock exposure without damage
  • Positive temperature coefficient of fuse element causing resistance to increase (prior to opening) thereby preventing absolute short to the power source
  • Internal construction ensuring that arc, plasma and vapor are contained within the fuse package during overload current conditions
  • Groups A/B data supplied with each shipment and Group C inspection optional

Electrical Characteristics

Fuse Part Number / Ratings

DC Resistance (Ohms) 1/

Overload Interrupt Time (Seconds) 2/

Maximum I2T (Ampere 2 Seconds) 3/

Style

Characteristic

Maximum Voltage (VDC)

Current Rating (Amps)

MIN

MAX

250%

400%

600%

250%

400%

600%

FM13

A

125V

2.0A

0.045

0.135

.005-.5

.0005-.015

.000075-.003

12.500

0.960

0.432

FM13

A

125V

1/8A

6.375

10.625

.005-30.0

.0005-.015

.000075-.003

2.93

0.004

0.002

FM13

A

125V

1/4A

1.875

3.125

.005-30.0

.0005-.015

.000075-.003

11.719

0.015

0.007

FM13

A

125V

3/8A

1.125

1.875

.005-.5

.0005-.015

.000075-.003

0.439

0.034

0.015

FM13

A

125V

1/2A

0.675

1.125

.005-.5

.0005-.015

.000075-.003

0.781

0.060

0.027

FM13

A

125V

3/4A

0.225

0.375

.005-.5

.0005-.015

.000075-.003

1.758

0.135

0.061

FM13

A

125V

1A

0.090

0.270

.005-.5

.0005-.015

.000075-.003

3.125

0.240

0.108

FM13

A

125V

1.5A

0.085

0.225

.005-.5

.0005-.015

.000075-.003

7.031

0.540

0.243

FM13

A

72 V

1/8A

6.375

10.625

.005-30.0

.0005-.015

.000075-.003

2.93

0.004

0.002

FM13

A

125V

3.0A

0.035

0.105

.005-.5

.0005-.015

.000075-.003

28.125

2.160

0.972

FM13

A

72 V

1/4A

1.875

3.125

.005-30.0

.0005-.015

.000075-.003

11.719

0.015

0.007

FM13

A

72 V

3/8A

1.125

1.875

.005-.5

.0005-.015

.000075-.003

0.439

0.034

0.015

FM13

A

72 V

1/2A

0.675

1.125

.005-.5

.0005-.015

.000075-.003

0.781

0.060

0.027

FM13

A

72 V

3/4A

0.225

0.375

.005-.5

.0005-.015

.000075-.003

1.758

0.135

0.061

FM13

A

72 V

1A

0.135

0.225

.005-.5

.0005-.015

.000075-.003

3.125

0.240

0.108

FM13

A

72 V

1.5A

0.097

0.163

.005-.5

.0005-.015

.000075-.003

7.031

0.540

0.243

FM13

A

72 V

2.0A

0.045

0.075

.005-.5

.0005-.015

.000075-.003

12.5

0.960

0.432

FM13

A

72 V

3.0A

0.0262

0.0438

.005-.5

.0005-.015

.000075-.003

28.125

2.16

0.972

FM13

A

72 V

4.0A

0.0195

0.0325

.005-.5

.0005-.015

.000075-.003

50.0

3.84

1.728

FM13

A

72 V

5.0A

0.0135

0.0225

.005-.5

.0005-.015

.000075-.003

78.125

6.00

2.70

FM13

A

72 V

6.0A

0.0100

0.0180

.005-.5

.0005-.015

.000075-.003

112.50

8.64

3.888

FM13

A

72 V

7.5A

0.0070

0.0110

.005-.5

.0005-.015

.000075-.003

175.781

13.50

6.075

FM13

A

72 V

10A

0.0046

0.0079

.005-.5

.0005-.015

.000075-.003

312.50

24.0

10.8

FM13

A

72 V

15A

0.0040

0.0075

.005-.5

.0005-.015

.000075-.003

703.125

54.0

24.30

FM13

A

50V

20A

0.0020

0.0056

.005-.5

.0005-.015

.000075-.003

1250.0

96.0

43.2