Series SIR
Surface Mount
DC to DC Converters
Single and Dual Output
Wide Input Range up to 3.33:1
Isolated Regulated up to 8 Watt DCDC Converters
Fully Regulated All Units Shielded
This series of high efficiency, wide input range, encapsulated regulators come in 85 different models. These
units feature a 500 VOLT DC input to output isolation in both single and dual output models. The SIR
Series will operate over a temperature range of 25º C TO +70º C with no heat sink or electrical derating.
These units are excellent for applications where input voltage varies dramatically, yet a high efficiency and
output voltage regulation must be maintained.
FEATURES
Single and dual isolated outputs
Voltage regulation over input range of
Unit
SIRE
SIRF
SIRA
SIRB
SIRC
Low
5V
8V
18V
36V
18V
High
15V
24V
36V
60V
60V
TYPICAL CHARACTERISTICS:
Test conditions: 25º C ambient
Operating temperature: 25º C to +70º C
ambient
Output voltage tolerance: ± 1% at typical input
voltage
Output voltage temperature coefficient:
0.02%/ºC
Storage temperature: 55º C to 125º C
Short circuit protection: Temporary
Operating frequency: 40Khtz, typical
OPTIONS AVAILABLE
Encapsulated semiconductors, conservatively
rated for maximum reliability.
Load regulation (see table for typical variation
at different loads)
Line regulation = Typical values
515V DC = ±1.5%
824V DC = ±1.5%
1836V DC = ±1.0%
3660V DC = ±1.0%
1860V DC = ±1.5%
High efficiency up to 82%
Will operate over a temperature range of 25º
C to +70º C with no heat sink or electrical
derating.
Isolation 100 megohms at 500 volts DC
External output trimming pin standard +5%
Each unit is supplied with an external control
pin. This "C" pin, when connected to the
Selected MILSTD883
Expanded operating temp. (55º C to +85º
C)
Stabilization Bake (125º C ambient)
Temperature Cycle (55º C to +125º C)
High Temp, full power burn in (100% power,
125º C case temp)
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