SRAH-03H120R Bel Fuse Inc, SRAH-03H120R Datasheet - Page 3

• Manufacturer Part Number: SRAH-03H120R
• Description: CONV DC/DC 1.2V 3A 4.5-32VIN SMD
• Manufacturer: Bel Fuse Inc
• Series: xRAH-03Hxx0r
• Type: Point of Load (POL) Non-Isolated with Remote On/Off and UVLOr

Specifications of SRAH-03H120R

• Output: 1.2V
• Number Of Outputs: 1
• Power (watts): 4W
• Mounting Type: Surface Mount
• Voltage - Input: 4.5 ~ 32V
• Package / Case: 7-DIP SMD Module
• 1st Output: 1.2 VDC @ 3A
• Size / Dimension: 0.78" L x 0.70" W x 0.32" H (19.8mm x 17.8mm x 8.1mm)
• Power (watts) - Rated: 3.6W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 81%
• Approvals: cUL, UL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -

General Specifications
Control Specifications
Output Trim Equations
Equations for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) and the nominal output
voltage of the converter (Vnom) are shown below. The Trim Down resistor should be connected between the Trim
pin and Vout. The Trim Up resistor should be connected between the Trim pin and Ground. Only one of the
resistors should be used for any given application.
Efficiency
Switching Frequency
Output Trim Range (narrow trim)
MTBF
Dimensions (surface mount)
Dimensions (vertical)
Weight
Remote On/Off
Signal Low (Unit On)
Signal High (Unit Off)
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 32 Vdc Input
R
R
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
Parameter
trimup
Vnom
trimdown
5.0
3.3
2.5
1.8
1.5
1.2
Millimeters (L × W × H)
Millimeters (L × W × H)
Parameter
Inches (L × W × H)
Inches (L × W × H)
=
V
=
adj
V
V
V
V
V
V
Vo=1.2 V
nom
O
O
O
O
O
C
−
=5.0 V
=3.3 V
=2.5 V
=1.8 V
=1.5 V
V
61.850
53.840
9.556
3.849
3.102
1.794
A
−
nom
-0.3 V
A
2.8 V
Min
V
1.2 Vdc - 5.0 Vdc/3 A Output
adj
−
200 kHz
90%Vo
89%
87%
85%
82%
80%
78%
Min
D
−
-
B
19.81 x 17.78 x 8.13
17.78 x 7.82 x 16.51
Typ
0.70 x 0.308 x 0.65
8,120,000 hours
0.78 x 0.70 x 0.32
-
-
15.620
13.830
14.420
29.400
61.700
10.910
300 kHz
5.1 g
92%
90%
88%
85%
83%
81%
Typ
B
-
12 V
Max
1 V
400 kHz
110%Vo
Max
-
-
-
-
-
-
11.760
17.200
Remote on/off pin open, unit on.
4.496
3.064
3.536
3.536
Module
Module
C
Measured at Vin=12 V, full load and
Ta=25 °C
Calculated Per Bell Core SR-332 (I
Nominal; T
Vout
Trim
GND
Vout
GND
Trim
a
= 25 °C)
Notes
14.700
40.200
10.000
10.000
10.000
6.490
Rtrim-down
Rtrim-up
Notes
D
O
=