AN2064 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

AN2064

Compliance of series/parallel protections for Telecom CO

STMicroelectronics 

1 2 3 4 5 6 7 8 9 10 Next

AN2064 - APPLICATION NOTE

Figure 7: Fuse choice

Line side

TCP1.25A

Series element

TRISIL

Protected side

Table 5 gives data about the TCP fuse series from Cooper Bussmann. The TCP1.25A fulfills the Telcordia

10/1000µs and 2/10µs lightning test requirements and the interrupting capabilities with respect to the 25A

and the 60A power cross requests requested by this standard (see figure 7).

Table 5: TCP series datasheet lightning and power cross specification from Cooper Bussmann

Surge Specification

FCC 47 Part 68

LIGHTNING SURGE SPECIFICATIONS

Surge

Repetitions

Waveform

(µSec.)

Current

(A)

Voltage

(V)

TCP 500mA tested

Longitudinal Type B

2

5x320

37.5

N/A

FCC 47 Part 68

Metallic Type A

2

10x560

100

800

Surge out

FCC 47 Part 68

FCC 47 Part 68

Bellcore GR-1089-CORE

Bellcore GR-1089-CORE

Surge out

Surge out

25

10x160

TCP 1.25A and TCP2A tested

Longitudinal Type A

2

10x160

Metallic Type B

2

First Level Lightning

50

First Level Lightning

50

1

1

10x560

10x1000

2x10

10x160

10x560

65

100 per

fuse

100

100

500

160

115

N/A

1500

800

1000

2500

N/A

N/A

Performance

Requirement

Fuse cannot open

Fuse must open

safely

Fuse cannot open

Fuse cannot open

Fuse cannot open

Fuse cannot open

Fuse cannot open

Fuse cannot open

Fuse cannot open

ELECTRICAL AND POWER CROSS SPECIFICATIONS

Product Voltage Interrupting

Code Rating AC

Rating*

DC Cold

Typical

Melting

I2t†

Maximum

Total

Clearing

Typical

Voltage

Drop‡

Alpha Code

Marking

250VAC 600VAC

Resistance**

(ohms)

1st 2nd

Code Code

min. typ. max.

TCP500mA 250 V

50 A

40 A 0.420 0.530 0.640 1.3 A2s 100 A2s 471mV F

TCP1.25A 250 V

50 A

60 A 0.070 0.090 0.110 22.2 A2s 100 A2s 150mV J

R***

TCP2A

250 V

50 A

60 A 0.050 0.075 0.100 30 A2s 100 A2s 205mV N

* AC Interrupting Rating (Measured at designated voltage, 100% power factor)

** DC Cold Resistance (Measured at 10% of rated current)

*** On RoHS Compliant Version (-R option)

† Typical Melting I2t (Measured with a battery bank at 60V DC, 10x-rated current, time constant of calibrated circuit less than 50 microseconds)

‡ Typical Voltage Drop (Measured at rated current after temperature stabilizes)

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