2
SPECIFICATIONS
GENERAL SPECIFICATIONS OUTPUT SPECIFICATIONS
Input Voltage 36~75V Voltage Accuracy Typical ±1%
Switching Frequency Typical (3.3V) 290KHz Line Regulation Typical ±0.1%
Isolation Voltage In/Out 1500V Load Regulation 0%~100% ±0.2%
Isolation
Typical 500pF Ripple & Noise 20MHz BW Typical 50 mV
Isolation Resistance
Minimum 100MΩ Current Limits Typical 150%
MTBF Bellcore 3M hours
Over Voltage
Typical 125%
Encapsulated 2.00”×1.00”×0.42” Voltage Trim +10%, -10%
Size
Open Frame 1.93”×0.93”×0.36”
PART NUMBERING SYSTEM
S 48 S R 3R3 04 E R F A
Form Factor Input
Voltage
Number of
Outputs
Product
Series
Output
Voltage
Output
Current
ON/OFF
Logic
Pin
Length
Option Code
S- Small
Power
48V S- Single R- Thru-hole
1R8- 1.8V
2R5- 2.5V
3R3- 3.3V
050- 5.0V
120- 12V
01- 1.25A
02- 2.0A
03- 3.0A
04- 4.5A
05- 5.0A
E- No ON/OFF
Control
Function
R- 0.170”
N- 0.145”
K- 0.110”
F- RoHS
6/6
(Lead
Free)
A- Encapsulated &
Trim
B- Encapsulated & No
Trim
C- Open Frame & Trim
D- Open Frame & No
Trim
MODEL LIST
MODEL NAME INPUT OUTPUT EFF @ 100% LOAD
S48SR1R805ERFA 36V~75V 0.5A 1.8V 5.0A 80.0%
S48SR2R504ERFA 36V~75V 0.5A 2.5V 4.5A 83.0%
S48SR3R303ERFA 36V~75V 0.5A 3.3V 3.0A 84.5%
S48SR3R304ERFA
36V~75V 0.6A 3.3V 4.5A 86.0%
S48SR05002ERFA 36V~75V 0.5A 5.0V 2.0A 85.0%
S48SR05003ERFA 36V~75V 0.6A 5.0V 3.0A 86.5%
S48SR12001ERFA 36V~75V 0.6A 12.0V 1.25A 86.5%
MECHANICAL DRAWING
Open Frame Version Encapsulated Version
CONTACT:
www.delta.com.tw/dcdc
USA:
Telephone:
East Coast: (888) 335 8201
West Coast: (888) 335 8208
Fax: (978) 656 3964
Email:
DCDC@delta-corp.com
Europe:
Phone: +41 31 998 53 11
Fax: +41 31 998 53 53
Email:
DCDC@delta-es.com
Asia & the rest of world:
Telephone: +886 3 4526107 ext 6220
Fax: +886 3 4513485
Email:
DCDC@delta.com.tw
