MD-40SMK footprint, schematic symbol and 3D model by Same Sky

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PCB Footprints

MD-40SMK - Same Sky PCB footprint - Other - Other - MD-40SMK-2

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Part Number MD-40SMK
Manufacturer Same Sky
Pin Count 7
Part Category Connector
Package Category Other
Footprint Name Other - MD-40SMK-2
Released Date May 4, 2020
Last Modified Date Jul 25, 2026 11:43 AM UTC
Pinout / Pin List Click Here (Member Only)

MD-40SMK Details

Manufacturer Part Number:
MD-40SMK
Rohs Code:
Yes
Part Life Cycle Code:
Obsolete
ECCN Code:
EAR99
HTS Code:
8536.69.40.20
Manufacturer:
Same Sky
YTEOL:
0
Board Mounting Option:
SOLDER HOLDING FLANGE
Body Breadth:
0.504 inch
Body Depth:
0.508 inch
Body Length:
0.551 inch
Body/Shell Style:
JACK
Connector Type:
MINI DIN CONNECTOR
Contact Finish Mating:
NOT APPLICABLE
Contact Gender:
FEMALE
Contact Material:
NOT APPLICABLE
Contact Resistance:
30 mΩ
Contact Style:
SQ PIN-SKT
Dielectric Withstanding Voltage:
250VAC V
Durability:
1000 Cycles
EMI Shielded:
YES
Insertion Force-Max:
44.1 N
Insulation Resistance:
50000000 Ω
Insulator Material:
POLYBUTYLENE TEREPHTHALATE
Mounting Option 1:
LOCKING
Mounting Style:
RIGHT ANGLE
Mounting Type:
BOARD
Number of Ports:
1
Operating Temperature-Max:
85 °C
Operating Temperature-Min:
-40 °C
Option:
GENERAL PURPOSE
Polarization Key:
POLARIZED HOUSING
Rated Current (Signal):
2 A
Reference Standard:
UL
Shell Finish:
TIN
Shell Material:
STEEL
Terminal Length:
0.138 inch
Termination Type:
SOLDER
Total Number of Contacts:
4

MD-40SMK Frequently Asked Questions (FAQs)

CUI Devices recommends a PCB layout with a solid ground plane and thermal vias to dissipate heat. A minimum of 2 oz copper thickness is recommended. Additionally, a thermal pad on the bottom of the module can be connected to a heat sink or a thermal interface material to improve heat dissipation.
To ensure reliable operation in high-vibration environments, CUI Devices recommends securing the module to the PCB using screws or adhesive, and using a conformal coating to protect the module from moisture and contaminants. Additionally, the PCB should be designed to minimize flexure and vibration transmission to the module.
The maximum allowable capacitance for the output filter capacitor is 10uF. Exceeding this value may cause instability or oscillation in the converter.
Yes, the MD-40SMK can be used in a redundant or parallel configuration, but it requires additional external circuitry to ensure proper operation and fault tolerance. CUI Devices recommends consulting with their application engineers for guidance on implementing such configurations.
CUI Devices recommends using a fuse with a rating of 5A to 10A, depending on the input voltage and current requirements. A slow-blow fuse (e.g., Littlefuse 5A or 10A) is recommended to ensure reliable operation and protection against input overcurrent conditions.

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MD-40SMK Overview

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About Same Sky

Tracing our roots back to 1989 just outside of Portland, Oregon, Same Sky® (formerly CUI Devices) is an electronic components manufacturer dedicated to nurturing the spirit of innovation by caring more than is expected, embracing evolution, taking a holistic approach, and having fun along the away. We specialize in an ever-expanding range of product technologies, including audio, interconnect, motion, relay, sensor, switch and thermal management solutions.

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