QM48T45 Family DC-DC Converter Data Sheet
36-75 VDC Input; 1.0-3.3 VDC @ 45 A Output
Pad/Pin Connections
Pad/Pin #
Function
1
2
3
4
5
6
7
8
Vin (+)
1
2
3
8
7
6
5
4
ON/OFF
Vin (-)
TOP VIEW
SIDE VIEW
Vout (-)
SENSE(-)
TRIM
SENSE(+)
Vout (+)
QM48T Platform Notes
•
•
All dimensions are in inches [mm]
Pins 1-3 and 5-7 are Ø 0.040” [1.02]
with Ø 0.078” [1.98] shoulder
Pins 4 and 8 are Ø 0.062” [1.57] without
shoulder
•
QM48T Pinout (Through-hole)
•
•
Pin Material: Brass
Pin Finish: Tin/Lead over Nickel or
Matte Tin over Nickel for “G” version
Converter Weight: 1.1 oz [31.5 g] typical
HT
CL
PL
•
Pin
Option
Height
(Max. Height) (Min. Clearance)
Option +0.000 [+0.00]
Pin Length
+0.016 [+0.41]
-0.000 [- 0.00]
±0.005 [±0.13]
-0.038 [- 0.97]
A
B
C
0.188 [4.77]
0.145 [3.68]
0.110 [2.79]
A
B
D
0.325 [8.26]
0.358 [9.09]
0.422 [10.72]
0.030 [0.77]
0.063 [1.60]
0.127 [3.23]
Converter Part Numbering/Ordering Information
Rated
Maximum
Height
[HT]
Pin
Length
[PL]
Product
Series
Input
Mounting
Scheme
Output
ON/OFF
Logic
Special
Features
Environ-
mental
Load
Voltage
Voltage
Current
QM
48
T
45
033
-
N
B
A
0
No Suffix
⇒ RoHS
lead-solder-
exemption
compliant
010 ⇒ 1.0 V
012 ⇒ 1.2 V
015 ⇒ 1.5 V
018 ⇒ 1.8 V
020 ⇒ 2.0 V
025 ⇒ 2.5 V
033 ⇒ 3.3 V
Through
hole
Through
hole
N ⇒
Negative
Quarter-
Brick
Format
T ⇒
Through-
hole
36-75 V
45 ADC
0 ⇒ STD
A ⇒ 0.325”
B ⇒ 0.358”
D ⇒ 0.422”
A ⇒ 0.188”
B ⇒ 0.145”
C ⇒ 0.110”
P ⇒
Positive
G ⇒ RoHS
compliant
for all six
substances
The example above describes P/N QM48T45033-NBA0: 36-75 V input, through-hole mounting, 45 A @ 3.3 V output, negative ON/OFF logic, a
maximum height of 0.358”, a through the board pin length of 0.188”, and Eutectic Tin/Lead solder. Please consult factory for the complete list of
available options.
Models highlighted in yellow or shaded are not recommended for new designs.
NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not designed, intended for use in, or authorized for use as critical
components in life support systems, equipment used in hazardous environments, or nuclear control systems without the express written
consent of the respective divisional president of Power-One, Inc.
TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on
the date manufactured. Specifications are subject to change without notice.
MCD10073 Rev. 1.0
Page 36 of 36
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