B1203LS-1WR3 footprint, schematic symbol and 3D model by Mornsun Power

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PCB Footprints

B1203LS-1WR3 - Mornsun Power PCB footprint - Other - Other - SIP-6

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3D Models

B1203LS-1WR3 - Mornsun Power - 3D model - Other - SIP-6

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Datasheet Download Datasheet
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Part Number B1203LS-1WR3
Manufacturer Mornsun Power
Pin Count 4
Part Category Power Supply
Package Category Other
Footprint Name Other - SIP-6
Released Date Jan 18, 2026
Last Modified Date Jan 18, 2026 12:49 PM UTC
Pinout / Pin List Click Here (Member Only)

B1203LS-1WR3 Details

Manufacturer Part Number:
B1203LS-1WR3
Rohs Code:
Yes
Part Life Cycle Code:
Active
Package Description:
MODULE-6/4
ECCN Code:
EAR99
Manufacturer:
MORNSUN
YTEOL:
6
Analog IC - Other Type:
DC-DC UNREGULATED POWER SUPPLY MODULE
Approvals:
BS, CB, CE, EN, IEC, UKCA
Efficiency (Main Output):
75%
Input Voltage-Max:
13.2 V
Input Voltage-Min:
10.8 V
Input Voltage-Nom:
12 V
JESD-30 Code:
R-PSMA-T4
Length:
19.65 mm
Line Regulation-Max:
1.5%
Load Regulation-Max:
20%
Number of Functions:
1
Number of Outputs:
1
Number of Terminals:
4
Operating Temperature-Max:
105 °C
Operating Temperature-Min:
-40 °C
Output Current-Max:
0.303 A
Output Voltage-Nom:
3.3 V
Package Body Material:
PLASTIC/EPOXY
Package Code:
SMA
Package Equivalence Code:
MODULE,4/6LEAD(UNSPEC)
Package Shape:
RECTANGULAR
Package Style:
MICROELECTRONIC ASSEMBLY
Peak Reflow Temperature (Cel):
NOT SPECIFIED
Protections:
SHORT CIRCUIT
Ripple Voltage (Main Out):
0.0265125 Vrms
Screening Level:
EN/IEC 62368-1
Seated Height-Max:
10.41 mm
Surface Mount:
NO
Technology:
HYBRID
Terminal Form:
THROUGH-HOLE
Terminal Pitch:
2.54 mm
Terminal Position:
SINGLE
Time@Peak Reflow Temperature-Max (s):
NOT SPECIFIED
Total Power Output-Max:
1 W
Trim/Adjustable Output:
NO
Width:
6 mm

B1203LS-1WR3 Frequently Asked Questions (FAQs)

MORNSUN recommends a PCB layout with a large copper area connected to the tab of the device to dissipate heat effectively. A minimum of 1 square inch of copper area is recommended.
Yes, the B1203LS-1WR3 is designed to withstand vibrations up to 10G peak acceleration, making it suitable for use in high-vibration environments. However, it's recommended to follow proper mounting and soldering techniques to ensure reliability.
To ensure the device operates within the specified temperature range, make sure to provide adequate heat sinking, avoid overheating, and keep the device away from high-temperature sources. Also, ensure that the ambient temperature is within the specified range.
MORNSUN recommends using a low-ESR ceramic capacitor with a value of 10uF to 22uF for optimal performance. The capacitor should be placed as close to the input pins as possible.
Yes, the B1203LS-1WR3 is designed to operate in humid environments, but it's recommended to follow proper conformal coating and sealing techniques to prevent moisture ingress. The device is rated for operation in environments with a relative humidity of up to 95%.

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