Datasheet
DS_Q48SQ12033_09272013 
13 
RECOMMENDED LAYOUT 
PART NUMBERING SYSTEM 
Q 
48 
S 
Q 
120 
33 
N 
R 
F 
H 
Form 
Factor 
Input 
Voltage 
Number of 
Outputs 
Product 
Series 
Output 
Voltage 
Output 
Current 
ON/OFF 
Logic 
Pin 
Length 
Q - Quarter 
Brick 
48-36V~75V 
S - Single 
Q- QB high 
power 
series 
120 - 12V 
33 - 33A 
N - Negative 
P - Positive 
K - 0.110” 
N - 0.146” 
R - 0.170” 
F - RoHS 6/6 
(Lead Free) 
Space - RoHS5/6 
A - with trim/ sense pin   
no heat spreader 
B - no trim/sense pin 
     no heat spreader 
H - with trim/sense pin 
       with heat spreader 
N - no trim/sense pin 
       with heat spreader 
* For modules with through-hole pins and the optional heatspreader, they are intended for wave soldering assembly 
onto system boards; please do not subject such modules through reflow temperature profile. 
CONTACT: www.deltaww.com/dcdc 
USA:   
Telephone: 
East Coast: 978-656-3993 
West Coast: 510-668-5100 
Fax: (978) 656 3964 
Email: DCDC@delta-corp.com   
Europe: 
Phone: +31-20-655-0967 
Fax: +31-20-655-0999 
Email: DCDC@delta-es.com 
Asia & the rest of world: 
Telephone: +886 3 4526107   
ext 6220~6224 
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. 










