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UM8-40 OPTIONS
C Option
Fast Rise Time Applications-
If applications demand a power supply that is optimized for fast rise time requirements, then the C
Option should be considered. If used for capacitor charging, a Spellman Capacitor Charging
Questionnaire should be filled out to assure all aspects of the intended usage is understood assuring
the appropriate unit is provided. Speak to a Spellman sales person for more details.
T Option
Low Temperature Coefficient-
The T Option offers the UM with an improved temperature coefficient. The standard voltage
feedback divider is replaced with one having a superior temperature coefficient, resulting in
a unit with 25ppm/C° (typical) temperature coefficient.
Maximum short circuit
discharge rate:
CV2
2
C = Output capacitance of unit
C ext = External capacitance
V = Maximum rated voltage
f
= Frequency of discharge
T = Nominal output current
t
R
= Rise time
(
f
) <1 watt
C + C ext
I
t
R =
Minimum rise time is 10ms
Typical Rise Time:
(
V
)
S Option
RF Tight Shielded Can-
The S Option mounts the UM module inside
of a flanged RF tight aluminum can.
1.30 (33.01)
UM8/12
UM15/20
1.15 (29.22)
.49 (12.35)
MOUNTING HOLES:
.156 DIA. TYP 4X
1
1A
2
2A
3
3A
4
4A
5
5A
6
6A
7
UM25/40 8.25 (209.55)
UM25/40 7.88 (200.15)
UM15/20 5.75 (146.05)
UM15/20 5.38 (136.65)
UM8/12 4.75 (120.65)
UM8/12 4.38 (111.25)
.10 (2.54)
TYP. 12X
.28 (7.12)
TYP. 13X
.10 (2.54)
.25 (6.35)
.19 (4.70)
.06 (1.59)
TYP. 2X
UM25/40
7.50 (190.50)
UM15/20 5.00 (127.00)
UM8/12 4.00 (101.60)
1.50 (38.10)
2.00 (50.80)
1.80 (45.72)
PINS:
GOLD-PLATED 0.025
(0.64) SQ.
.38 (9.53)
.40 (10.16)
UM15/20
UM8/12
SPELLMAN HIGH VOLTAGE ELECTRONICS CORPORATION
UM8-40
HIGH VOLTAGE
MODULE
B Option
Terminal Block-
The B Option provides terminal block
connections for both the customer inter-
face and high voltage output/return. This
feature can be helpful in situations where
frequent wiring changes are anticipated,
as in a testing or prototype environment.
PHYSICAL INTERFACING
SHIELDING OPTIONS
Corporate Headquarters
Hauppauge, New York USA
+1-631-630-3000 FAX: +1-631-435-1620
e-mail: sales@spellmanhv.com
www.spellmanhv.com
128074-001 REV. K
Spellman High Voltage is an ISO 9001:2008 and ISO 14001:2004 registered company
Copyright © 2010 Spellman High Voltage Electronics Corp.
