
Industrial Environment
Switching Regulators, PCB & Chassis
PSC-Family
Edition 2/96 - Melcher AG
4 - 63
MELCHER
The Power Partners.
4.2
Mechanical Data
Dimensions in mm. Tolerances
±0.3 mm unless otherwise specified.
Type Key and Product Marking
Type Key
PSC 12 8 -7 L i R P C D
Positive switching regulator in case C03 .................... PSC
Blank ..................................................................................
Nominal output voltage in volt (5A –> 5.1) ............. 5.1...36
Nominal output current in ampere ............................. 8...12
Ambient temperature range
TA = –25...71°C ................................................... -7
T
A = –40...71°C ................................................... -9
Input filter ......................................................................... L
Inhibit input ........................................................................ i
External output voltage adjustment ................................. R
Potentiometer ................................................................... P
Thyristor-Crowbar ........................................................... C
"Save Data" undervoltage monitor .................................. D
Example:PSC 128-7LiPC = A positive switching regulator with a 12 V, 8 A output, ambient temperature range of
– 25…71
°C, input filter, inhibit input, potentiometer and thyristor-crowbar.
Produkt Marking
Main face: Family designation, applicable safety approval and recognition marks, warnings, Melcher patent nos. and com-
pany logo.
Cover:
Specific type designation, input voltage range, nominal output voltage and current, pin allocation, identification
of LED, potentiometers and degree of protection.
Rear side: Label with batch no., serial no. and data code comprising production site, modification status of the main PCB
and date of production.
Gi–
Go–
Vo+
i
Vi+
D
Uo
Uo
Ut
GR
7.5
27.5
18.5
11.3
40
7.5 10 7.5 10
(14)
7.5
10
±2
4.3
min.
8
5 ±0.5
144
12.5 ±1
43
±1
(45)
88
±1
7
±2
151 ±1
32.2
±0.5
2.8
x
0.8
8.1
±1
6.35
±1
6.3
x
0.8
Distance between M4 mounting screws
Measuring point
of case temperature
TC
LED-output
voltage indicator
Potentiometer
(option P)
Potentiometer
(option D)
Fig. 12
Case C03 (weight 440 g)
European
Projection