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Электронный компонент: MH80626C

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2-7
Features
2 x high power, high voltage, thick film surge
protection resistors
2 x high accuracy, high stability matched
battery feed resistors
2 replaceable 2AG fuses in surface-mounted
fuse clips
Used with the MH89626C for a complete OPS
line interface
Applications
Battery feed and secondary protection for Off-
Premise SLICS
Description
The MH80626C hybrid SIP provides a protection
circuit consisting of two 2AG size fuses in surface-
mounted fuse clips and two high voltage, high power
5.5
surge resistors.
The MH80626C also provides two high stability, high
power 50
feed resistor matched to 0.1%.
The SIP provides full secondary protection for the
MH89626C Off-Premise SLIC, allowing conformance
to the requirements of various international safety
and performance standards.
Figure 1 - Functional Block Diagram
F1
F2
R1
R2
TIN
RIN
R3
R4
R5
TCOM
TF
T
RF2
RF1
R
RF
RCOM
ISSUE 2
April 1995
Ordering Information
MH80626C 20 Pin SIL Package
0
C to 70
C
MH80626C
Battery Feed/Protection SIP
Preliminary Information
2-8
MH80626C
Preliminary Information
Figure 2 - Pin Connections
Pin Description
Pin #
Name
Description
1
TIN
TIP Input. Connects to TIP conductor of the Subscriber Loop.
2
NC
No Connection: There is no pin in this location
3
IC
Internal Connection: Do no connect to this pin.
4
NC
No Connection: There is no pin in this location.
5
TCOM
TIP Common: Connects to TIP pin of the SLIC via a normally closed ringing relay. See
Figure 1.
6
T
TIP Connection: Connects to TIP pin of the SLIC.
7
R
RING Connection: Connect to the RING pin of the SLIC.
8
RCOM
RING Common: Connects to RING pin of the SLIC via a normally closed ringing relay. See
Figure 1.
9
NC
No Connection: There is no pin in this location.
10
IC
Internal Connection: Do not connect to this pin.
11
NC
No Connection: There is no pin in this location.
12
RF
RING Feed Connection: Connects to the RF pin of the SLIC.
13
NC
No Connection: There is no pin in this location.
14
TF
TIP Feed Connection: Connect to the TF pin of the SLIC.
15
NC
No Connection: There is no pin in this location.
16
RF1
RING Feed 1. Ringing Input: Connects to ringing supply.
17
NC
No Connection: There is no pin in this location.
18
RF2
RING Feed 2. Ringing Output: Connects to RING line through the ring relay contact.
19
NC
No Connection: There is no pin in this location.
20
RIN
RING Input: Connects to RING conductor of the subscriber loop.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
TIN
NC
IC
NC
TCOM
T
R
RCOM
NC
IC
NC
RF
NC
TF
NC
RF1
NC
RF2
NC
RIN
2-9
Preliminary Information
MH80626C
Electrical Characteristics 0C to 70C
* Typical figures are at 25C and are for design aid only
Note 1: Refer to the appropriate Telecom Equipment Safety specifications for full details of the test and requirements
Characteristics
Symbol
Min
Typ*
Max
Units
Test Conditions
1
Resistance - absolute
R1
4.5
5.5
6
2
Resistance - absolute
R2
4.5
5.5
6
3
Resistance - match
1
%
Match between R1 &
R2
4
Resistance - absolute
R3
49.75
50
50.25
5
Resistance - absolute
R4
49.75
50
50.25
6
Resistance - match
0.1
%
Match between R3 &
R4
7
Resistance - absolute
R5
555
560
565
8
Fuse
F1
0.25
Amps
250 VAC
Slow Blow
9
Fuse
F2
0.25
Amps
250 VAC
Slow Blow
Reference
Specification
Test
Description
Performance
Comments
1
CCITT K.20
Lightning Surge
Simulation
1kV
10 x 700
sec
No damage
No arching, fuse intact
See Note 1
2
CCITT K.20
Power Induction
300 Vrms
200 msec
No damage
No arching, fuse intact
See Note 1
3
CCITT K.20
Power Cross
220 Vrms
15 min
No damage
No arching, fuse blows
See Note 1
2-10
MH80626C
Preliminary Information
Figure 3 - Mechanical Data
2.0 + 0.020
(50.8 + 0.5)
0.7 + 0.020
(17.8 + 0.5)
0.05 + 0.01
(1.3 + 0.5)
*
*
*
0.05 + 0.02
(1.225 + 0.05)
0.020 + 0.005
(0.51 + 0.13)
0.100 + 0.010
(2.54 + 0.26)
0.18 + 0.02
(4.6 + 0.5)
FUSE AREA
FUSE AREA
1
2
3
4
5
6
0.34 MAX
0.01 MIN
(0.25)
1
20
Notes:
1) Not to scale
2) Dimensions in inches).
3) (Dimensions in millimetres).
*Dimensions to centre of pin &
tolerance non accumulative.