
PIN OUT
B4-30
MSR SERIES
4 WATT
DC/DC C
ONVERTERS
MODEL NUMBERING KEY
MSR 28 512 T / ES
Base Model
Input Voltage
Output Voltage
Screening
(Standard screening has no designator
in this position.)
Number of Outputs
(S = single, D = dual, T = triple)
Dot on top of cover
indicates pin one.
BOTTOM VIEW
MSR
1 2
9
10
17
18
See section B8, case C2, for dimensions.
F
IGURE
3: P
IN
O
UT
Pin
1, 2
1
Single Output
Dual Output
Triple Output
Positive Input
Positive Input
Positive Input
3
No connection
No connection
No connection
4
Case
Case
Case
5
No connection
No connection
Negative Aux. Output
Output Common Main
2
Output Common Aux.
2
6
No connection
No Connection
7
No connection
Output Common
3
Output Common
3
No connection
8
Output Common
Positive Aux. Output
9
No connection
+5 VDC Output
10
No connection
Positive Output
No connection
11
No connection
Positive Output
3
Positive Output
3
No connection
No connection
12
Negative Output
No connection
13
No connection
No connection
14
No connection
Ext. Capacitor
No connection
15
Inhibit
Inhibit
Inhibit
16
17, 18
1
No connection
No connection
No connection
Input Common
Input Common
Input Common
Pin Out Notes
1. Make external connection to both pins on all models.
Pins 1 and 2 positive input
Pins 17 and 18 input common
2. Pins 6 and 7 on triple output models are connected internally.
3. On the HR41-2805:
Make external connections to both output common pins (8 and 9).
Make external connections to both positive output pins (12 and 13).
W
ARNING
: E
XTERNAL
C
APACITORS
R
EQUIRED
O
PERATION WITHOUT EXTERNAL CAPACITORS WILL RESULT IN DAMAGE TO THE INTERNAL CIRCUITRY
.
24021-001-DTS Rev A
All technical information is believed to be accurate, but no responsibility is
assumed for errors or omissions. Interpoint reserves the right to make changes in
products or specifications without notice. MSR Series is a trademark of Interpoint.
Copyright 1992 - 1999 Interpoint. All rights reserved.
DQ# 1022