300 Myles Standish Blvd., Taunton, MA 02780
Ph: 1-800-823-8082 Fax: 508-823-8181
CostCutter Isolated and Regulated
25 WATT Modular DC/DC Converters
Wide 2 : 1 Input Range
High Efficiency
Regulated Outputs
500V Isolation
Epoxy encapsulated
Short circuit protection
SKE25, DKE25,
TKE25 Series
Contact
Factory
for
High Volume
Pricing
MODEL SELECTIONS Unit measures 2.85”W x 2.66”L x 0.866”H
Output Output Input Model Price
Voltage Amps Range Number 1 10
SINGLE OUTPUT
5 VDC 5 9-18VDC SKE25A-05 $69 $65
5 18-36VDC SKE25B-05 $69 $65
5 36-72VDC SKE25C-05 $69 $65
12 VDC 2.1 9-18VDC SKE25A-12 $69 $65
2.1 18-36VDC SKE25B-12 $69 $65
2.1 36-72VDC SKE25C-12 $69 $65
15 VDC 1.7 9-18VDC SKE25A-15 $69 $65
1.7 18-36VDC SKE25B-15 $69 $65
1.7 36-72VDC SKE25C-15 $69 $65
DUAL OUTPUT
+/-5 VDC +/-2.5 9-18VDC DKE25A-05 $71 $67
+/-2.5 18-36VDC DKE25B-05 $71 $67
+/-2.5 36-72VDC DKE25C-05 $71 $67
+/-12 VDC +/-1.05 9-18VDC DKE25A-12 $71 $67
+/-1.05 18-36VDC DKE25B-12 $71 $67
+/-1.05 36-72VDC DKE25C-12 $71 $67
+/-15 VDC +/-0.85 9-18VDC DKE25A-15 $71 $67
+/-0.85 18-36VDC DKE25B-15 $71 $67
+/-0.85 36-72VDC DKE25C-15 $71 $67
TRIPLE OUTPUT
+5,+/-12 4,+/-0.25 9-18VDC TKE25A-B $73 $69
+5,+/-12 4,+/-0.25 18-36VDC TKE25A-B $73 $69
+5,+/-12 4,+/-0.25 36-72VDC TKE25A-B $73 $69
+5,+/-15 3.5,+/-0.25 9-18VDC TKE25A-B $73 $69
+5,+/-15 3.5,+/-0.25 18-36VDC TKE25A-B $73 $69
+5,+/-15 3.5,+/-0.25 36-72VDC TKE25A-B $73 $69
300 Myles Standish Blvd., Taunton, MA 02780
Ph: 1-800-823-8082 Fax: 508-823-8181
CostCutter Isolated and Regulated
25 Watt Modular DC/DC Converters
OUTPUT DERATING CURVE
MECHANICAL DIMENSIONS
All specifications are typical at nominal input, full load, and 25DegC
unless otherwise noted
Astrodyne products are not authorized or warranteed for
use as critical components in life support systems,
equipment used in hazardous environments, nuclear
controls systems, or other mission-critical applications.
* These are stress ratings. Exposure of the devices to any of these conditions
may adversely affect long term reliability. Proper operation under conditions other
than the standard operating conditions is neither warranteed nor implied.
0
20
40
60
80
100
120
-15 -5 0 10 50 60 70 80
Ambient Temp, Deg C
Output W(%)
Pin # Single Dual Triple
1 + Input + Input + Input
2 - Input - Input - Input
3 + Sense - Output + Output
4 Trim Common Common
5 - Sense No Connection - Output
6 + Output + Output +5 Volt
7 - Output Common Common
8 Control Control Control
INPUT SPECIFICA TIONS
Input V oltage, Nominal 12VDC, 24VDC, 48VDC
Input V oltage Ranges 9-18, 18-36, 36-72VDC
Input Surge V oltage 30V (12V Models), *
52V (24V Models), *
96V (48V Models), *
10 mS duration, min.
OUTPUT SPECIFICA TIONS
V oltage and Current See Selection Chart
Load Regulation +/- 1%, NL - FL (Single)
+/- 2%, 20% - FL (Dual/Triple)
Line Regulation +/- 0.5%, typ
Temperature Coefficient +/-0.02%/DegC (0~50°C)
Ripple/Noise(Single/Dual) 60mV Pk-Pk, typ
Overcurrent Protection 160-220%, Auto Recovery *
V oltage Stability +/-2%, max
Transient Response <0.250 msec / 25% Load Step
Change, max
Short Circuit Protection Continuous, self-recovering
GENERAL SPECIFICA TIONS
On/Off Control (Ref to - Input pin)
Logic "0"/Open=ON
Logic "1"=OFF
Shutdown Idle Current 60mA, typ
Input-Out Isolation 500VDC
In/Out Capacitance 10000 pF
Efficiency 82%, typ
Switching Frequency 100Khz
ENVIRONMENTAL SPECIFICATIONS
Oper. Temperature -15°C to +60°C (FL)
80% Load @ 71°C
Storage Temperature -25°C to +85°C *
Maximum Case Temp 80 DegC *
Input Fusing 12V: 3A, 24V:2A, 48V: 1A
MTBF SKE25 DKE25 TKE25
kHrs 155 142 114
Mil Std 217F, 25C
Shock/Vibration To MIL-STD 810C
PHYSICAL SPECIFICA TIONS
Case Material Six-Sided Shield Metal
Case
Construction Fully Encapsulated
Weight 6.79 oz, (190g)
