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MH80625C
Protection SIP Preliminary Information
Features
* * 2 x 5.5 ohm high power, high voltage, thick film protection resistors 2 replaceable 2AG fuses in surface-mounted fuse clips
DS ISSUE 2 April 1995
Ordering Information MH80625C 10 Pin SIL Package 0C to 70C
Applications
* * Protection circuit for the MH89625C OPS SLIC Protection circuit for analog line interfaces, power supplies, etc.
Description
The MH80625C hybrid SIP provides a protection circuit consisting of two 2AG size fuses in surfacemounted fuse clips and two high voltage, high power resistors. The SIL hybrid, together with an external solid state protector, provides full secondary protection for the MH89625C Off-Premise SLIC, allowing conformance to the requirements of CCITT K.20.
F1 TIN
R1 TOUT
F2 RIN
R2 ROUT
Figure 1 - Functional Block Diagram
1
MH80625C
Preliminary Information
IC NC RIN NC TOUT ROUT NC TIN NC IC
1 2 3 4 5 6 7 8 9 10
Figure 2 - Pin Connections
Pin Description
Pin # 1 2 3 4 5 6 7 8 9 10 Name IC NC RIN NC TOUT ROUT NC TIN NC IC Internal Connection. No Connection. Ring Input: Connects to Ring conductor of the Subscriber Loop. No Connection. Tip Output: Connects to Tip conductor of the SLIC. Ring Output: Connects to Ring conductor of the SLIC. No Connection. Tip Input: Connects to Tip conductor of the Subscriber Loop. No Connection. Internal Connection. Description
2
Preliminary Information
Electrical Characteristics 0C to 70 C
Characteristics 1 2 3 4 Resistance - absolute Resistance - absolute Resistance - match Fuse Symbol R1 R2 Min 4.5 4.5 Typ* 5.5 5.5 Max 6 6 1 Units % Amps
MH80625C
Test Conditions
F1
0.25
5
Fuse
F2
0.25
Amps
Match between R1 & R2 Littlefuse 2AG, 250VAC P/N 229.250 Slow Blow Littlefuse 2AG, 250VAC P/N 229.250 Slow Blow
* Typical figures are at 25C and are for design aid only.
Reference Specification 1 CCITT K.20
Test Lightning Surge Simulation Power Induction Power Cross
Description 1kV 10 x 700 sec 300 Vrms 200 msec 220 Vrms 15 min
Performance No damage No arcing, fuse intact No damage No arcing, fuse intact No damage No arcing, fuse blows
Comments See Note 1
2 3
CCITT K.20 CCITT K.20
See Note 1 See Note 1
Note 1: Refer to CCITT K.20 specification for details of tests.
MDF PRIMARY PROTECTION
SECONDARY PROTECTION TIN 8 F1 R1 5 RING RELAY R2 TOUT
MH89625C
TIP
1 TISP 3082
TIP
MH80625C
RIN RING 3 F2
2 6 ROUT 7 P6KE39C 90 VRMS 25Hz 6
RING
RF2
RF1 -VBAT
Figure 3 - Application Circuit - Secondary Protection
3
MH80625C
Preliminary Information
0.34 MAX 0.01 MIN (0.25) 1.0 + 0.020 (25.4 + 0.5)
FUSE AREA 0.7 + 0.020 (17.8 + 0.5) FUSE AREA
1 1 2 3 4
10 5 6
0.05 + 0.01 (1.3 + 0.5) * 0.05 + 0.02 0.020 + 0.005 (1.225 + 0.05) (0.51 + 0.13) * *
0.18 + 0.02 (4.6 + 0.5)
Notes: 1) Not to scale 2) Dimensions in inches). 3) (Dimensions in millimetres). *Dimensions to centre of pin & tolerance non accumulative.
0.100 + 0.010 (2.54 + 0.26)
Figure 4 - Mechanical Data
4
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