BK/MCR-3 datasheet, PDF - EEWORLD Datasheet

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BK/MCR-3: DescriptionElectric Fuse, Fast Blow, 3A, 50A (IR),; CategoryCircuit protection Circuit protection; File Size77KB，2 Pages; ManufacturerCooper Industries

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BK/MCR-3 Overview

Electric Fuse, Fast Blow, 3A, 50A (IR),

BK/MCR-3 Parametric

Parameter Name	Attribute value
Maker	Cooper Industries
Reach Compliance Code	unknown
Fusing characteristics	FAST
body height	7.54 mm
Body length or diameter	3.1 mm
Circuit protection type	Electric Fuse
Joule integral nominal
Maximum operating temperature	125 °C
Minimum operating temperature	-55 °C
physical size	3.1mm x 7.54mm
Pre-discharge rating	0.35 A2/s
Rated breaking capacity	50 A
Rated current	3 A
Rated voltage	125 V
Guideline	CSA, UL
Terminal shape	PIN WIRE
Disconnect time or delay	14400 s

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Subminiature Through Hole

MCR Series, Fast Acting, Solid Matrix

Description

• Axial Leaded

• Fast Acting, Solid Matrix Construction

• High Temperature Thermoplastic Body, UL 94 VO

• Tin-lead plated copper Lead Wires, .025" diameter

ELECTRICAL CHARACTERISTICS

% of Amp Rating (0-10A)

Opening Time

100%

4 hours minimum

250%

5 seconds maximum

OBSOLETE

- Recommended replacement with MCRW, Data Sheet 4074 -

OBSOLETE

0210

Agency Information

• UL Recognition Guide & File Numbers:

JDYX2 & E19180

• CSA Certification File & Class Numbers: 053787 C 00 &

1422 30 (0 - 1/8A); 053787 C 00 & 1422 01 (1/4A - 8A)

Ordering

• Specify product code and packaging code

Environmental Data

• Life Test: 2000 hours at 80% rated current, 55°C

• Moisture Resistance: MIL-STD-202, Method 106, 90%

relative humidity at 65°C.

• Operating Temperature: -55°C to 125°C with proper fuse

derating

• Resistance to Soldering Heat: MIL-STD-202, Method

210, Test Condition C (260°C)

• Salt Spray: MIL-STD-202, Method 101, Test Condition B

• Shock: MIL-STD-202, Method 213, Test Condition I,

100G’s for 6 milliseconds

• Solderability: MIL-STD-202, Method 208

• Terminal Strength: MIL-STD-202, Method 211, Test

Condition A, will withstand 7 lb. axial pull test.

• Thermal Shock: MIL-STD-202, Method 107, Test

Condition B, -65°C to 125°C

• Thermal Cycle: EIA-STD-RS-186-C, Test Condition A,

-55°C to 85°C

• Vibration: MIL-STD-202, Method 204, Test Condition C,

(55 to 2000 HZ, 10G’s peak)

• Wave Soldering: Maximum reservoir temperature

260°C, 10 second maximum exposure, .125" from body.

Dimensions

⁄

(inches)

*All tolerances:

±0.005"

±0.13mm

1.13"

28.58mm

.12"

3.10mm

.025"

0.64mm

1.13"

28.58mm

.297"

7.54mm

SPECIFICATIONS

Product

Code

MCR-1/16

MCR-1/8

MCR-1/4

MCR-3/8

MCR-1/2

MCR-3/4

MCR-1

MCR-1 1/2

MCR-2

MCR-2 1/2

MCR-3

MCR-3 1/2

MCR-4

MCR-5

MCR-7

MCR-10

Rated

Voltage

125V

60V

90V

60V

90V

Interrupting

Rating

50A

300A

50A

300A

50A

300A

50A

300A

50A

300A

50A

300A

50A

300A

50A

300A

50A

300A

50A

300A

50A

300A

50A

300A

50A

300A

50A

300A

50A

300A

50A

300A

Pre-arching

t (A

sec)

-6

1.1 x 10

1.0 x 10

-7

-6

4.3 x 10

7.1 x 10

-7

8.0 x 10

-5

1.0 x 10

-6

9.7 x 10

-5

6.7 x 10

-6

7.4 x 10

-4

5.4 x 10

-5

1.3 x 10

-3

7.4 x 10

-5

.01

.03

.02

.09

.07

.19

.14

.35

.28

.56

.37

.96

.67

1.82

1.34

1.48

.49

3.62

1.16

Typical Total Clearing

t (A

sec)

-6

1.8 x 10

1.5 x 10

-7

-6

7.3 x 10

8.7 x 10

-7

1.2 x 10

-4

1.3 x 10

-6

1.1 x 10

-4

8.3 x 10

-6

6.2 x 10

-3

6.8 x 10

-5

7.5 x 10

-2

9.2 x 10

-5

.02

.01

.04

.03

.11

.08

.25

.17

.45

.32

.83

.43

1.37

.77

2.53

1.51

2.02

.58

4.41

1.38

Typical Voltage

Drop Volts at

100% Rated

2.33

1.52

.76

.73

.65

.55

.24

.20

.16

.15

.14

.13

.11

.10

.08

1. Interrupting ratings were measured at 100% (1/16 to 5) and 100% (7, 10) power factors on AC, and a time constant less than 1 ms. on DC.

2. I

t was measured at 50 amps 125 VAC, .95PF, (random closing angle) and 300 amps 125 VDC, TC <1ms. for 1/16 through 5 amps and 50 amps 60 VAC, .95PF,

(random closing angle), and 300 amps 90 VDC, TC <1ms. for the 7 and 10 amp fuses.

NOTE: All values shown above are typical.

• Device designed to carry rated current for four hours minimum. An operating current of 80% or less of rated current is recommended, with further derating required

at elevated ambient temperatures.

BU-SB10142

Page 1 of 2

Data Sheet 2003

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