Temperature Range ........-55 ºC to +125 ºC

Environmental Characteristics

Thermal Shock ......................MIL-STD-202,

Method 107, Test Condition B

(-65 °C to +125 °C)

Shock ..........MIL-STD-202, Method 213,

Test Condition I

(100 Gs peak for 6 milliseconds)

Vibration ........MIL-STD-202, Method 201

(10-55 Hz, 0.06 inch total excursion)

Salt Spray ....MIL-STD-202, Method 101,

Test Condition B (48 hrs.)

Insulation Resistance ........MIL-STD-202,

Method 302, Test Condition A

(after opening)

10,000 ohms minimum

Solderability ..MIL-STD-202, Method 208

Resistance to Solder Heat

..................MIL-STD-202, Method 210,

Test Condition J (235 °C, 30 sec.)

Physical Characteristics

Body Material

..........Ceramic with tin plated brass caps

Solder ............................................Lead free

Solder Reflow Temperature

..............................240 °C for 30 seconds

260 °C for 3 seconds

Packaging ..............2,000 pcs. per 13 ” reel

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

Specifications are subject to change without notice.

Customers should verify device performance in their specific applications.

Telefuse

Features

■

For use in telecommunication circuit applications requiring low current protection

with high surge tolerance

■

Overcurrent protection to Telcordia GR-1089-CORE Issue 4 (B1250T only)

& UL 1950/60950

■

Bourns

■

Agency recognition:

File: E198545

■

RoHS compliant*

Max. Rise/

Repetitions

Minimum

Minimum Withstand Peak Current (A)

Min. Decay

Peak

(µs)

Total

Each Polarity Voltage (V)

B0500T

B1250T

B2000T

10/1000

50

25

1000

25

100

120

10/360

50

25

1000

30

125

150

2/10

20

10

2500

120

500

600

10/360

10

5

1000

30

125

150

2/10

2

1

5000

120

500

600

8/20

2

1

5000

75

300

350

Lightning Surge Withstand Capabilities

Ampere

Voltage

Typical

Volt-drop

Melting I2T

Melting I2T

Maximum

Model

Rating

Rating

Cold

@ 100 % In

< 10 msec

@ 10 In

Power

Number

(A)

(VRMS)

Resistance

(Volts)

(A2 sec.)

(A2 sec.)

Dissipation

(ohms)

max.

(W)

B0500T

0.500

600

0.350

0.23

2

2.3

0.20

B1250T

1.25

600

0.075

0.18

14

17

0.40

B2000T

2.0

600

0.056

0.16

33

37

0.52

Electrical Characteristics

Asia-Pacific:

TEL +886- (0)2 25624117

FAX +886- (0)2 25624116

Europe:

TEL +41-41 7685555

FAX +41-41 7685510

The Americas:

TEL +1-951 781-5500

FAX +1-951 781-5700

www.bourns.com

Test Methods per GR-1089/TIA-968-A (FCC Pt. 68)

Short

Fuse Characteristics

GR-1089

Circuit

1st Level

Voltage

Current

Test

(VRMS)

(A)

Applications

Duration

B0500T

B1250T

B2000T

1

50

0.33

1

15 min.

2

100

0.17

1

15 min.

3

200,400,

1

60

1 sec.

Parts pass all 1st Level tests

600

4

1000

1

60

1 sec.

6

600

0.5

1

30 sec.

7

440

2.2

5

2 sec.

Will open

8

600

3

5

1.1 sec.

Will open

9

1000

5

5

0.4 sec.

Will open

AC Power Fault Tests

Maximum Time for Fuse to Open (Seconds)

Voltage

Current

(Vac)

(A)

Duration

B0500T

B1250T

B2000T

600

2.2

1.0

900

Will not open

600

2.6

0.8

50

2000

600

3.0

0.5

10

100

600

3.75

0.3

5

10

600

5

0.2

2

3

600

7

Up to 15 Min.

0.08

1

2

600

10

0.04

0.5

0.7

600

12.5

0.01

0.2

0.3

600

20

0.005

0.07

0.1

600

25

0.004

0.04

0.07

600

30

0.003

0.02

0.05

AC Current Limiting Protector Tests/Fusing Coordination Tests