2
SPECIFICATIONS
Input Voltage 42~53V Voltage Accuracy Typical 3.5V
Switching Frequency Typical 150KHz Line Regulation Typical (Q48SB12020) 2.4V
Isolation Voltage In/Out 2250V Typical (Q48SB12025) 2.7V
Isolation Capacitance Typical (Q48SB12020) 500pF Load Regulation 0%~100% 500mV
Typical (Q48SB12025) 960pF Ripple & Noise 20MHz BW Typical 90 mV (Q48SB12020)
Isolation Resistance
Minimum 10M ohm 100mV (Q48SB12025)
Size (Q48SB12020) 57.9x36.8x10.9mm 2.28”x1.45”x0.43” Current Limits Typical (Q48SB12020) 25A
(Q48SB12025) 57.9x36.8x12.7mm 2.28”x1.45”x0.50” Typical (Q48SB12025) 30A
PART NUMBERING SYSTEM
Q
48 S B 120 20 N R F A
Type of
Product
Input
Voltage
Number of
Outputs
Product
Series
Output
Voltage
Output
Current
ON/OFF
Logic
Pin
Length
Option Code
Q- Quarter
Brick
48V S- Single B- Bus
Converter
120- 12V
108- 9.6V
20- 20A
25- 25A
31- 31A
N- Negative
P- Positive
R- 0.170”
N- 0.145”
K- 0.110”
F- RoHS 6/6
(Lead Free)
A- Standard Functions
H- with heat spreader
MODEL LIST
MODEL NAME INPUT OUTPUT EFF @ 100% LOAD
Q48SB10828NRFA 36V~60V 6.3A 9.6V 31A 95.5%
Q48SB12020NRFA 42V~53V 5A 12V 20A 96.0%
Q48SB12025NRFA 42V~53V 6.25A 12V 25A 96.0%
Default remote on/off logic is negative and pin length is 0.170”
For different remote on/off logic and pin length, please refer to part numbering system above or contact your local sales
MECHANICAL DRAWING
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:
Telephone: +41 31 998 53 11
Fax: +41 31 998 53 53
Email:
DCDC@delta-es.tw
Asia & the rest of world:
Telephone: +886 3 4526107 x 6220
Fax: +886 3 4513485
Email:
DCDC@delta.com.tw
WARRANTY
Delta offers a two (2) year limited warranty. Complete warranty information is listed on our web site or is available upon request from Delta.
Information furnished by Delta is believed to be accurate and reliable. However, no responsibility is assumed by Delta for its use, nor for any
infringements of patents or other rights of third parties, which may result from its use. No license is granted by implication or otherwise under any patent
or patent rights of Delta. Delta reserves the right to revise these specifications at any time, without notice.
