Molex Connector Mini-fit 4 pin 0039012040

SKU 0039012040 Brand Molex
Molex logo — Molex spare parts for burners and boilers Brand Molex
Buy Molex Connector Mini-fit 4 pin 0039012040

Key specifications

Poles / outlets4
Pitch4.2
Colornatural
Materialpolyamide (pa66), nylon 6/6
Operating principlereceptacle (female socket)
Mounting featurefree hanging (in-line)
Connection typecrimp
Standardsul 94v-2, rohs
Number of rows2
all specifications (9) ↓

0.24EUR

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  • Original manufacturer part
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Description

The Molex Connector Mini-fit 4 pin 0039012040 is a 4-position, 4.20 mm pitch receptacle housing (female socket) with 2 rows. It is designed for free hanging (in-line) mounting and uses crimp termination. The connector is made of polyamide (PA66) nylon 6/6 in natural color and complies with UL 94V-2 and RoHS standards. It is compatible with Molex Mini-fit Jr. 5556 and Mini-fit Plus 45750 series socket contacts.

Further details

Applicationwire-to-board and wire-to-wire connections in compact electronic and electrical systems
Key featurereliable power delivery and signal transmission
Qualityrobust design and secure connection features

Choosing and fitting

Parts of this type are selected by matching the number of poles, pitch, and row configuration to the mating connector and wire harness. The mounting style (free hanging, panel mount, or board mount) must correspond to the application. Ensure the contact termination type (crimp, solder, etc.) matches the tooling and wire gauge. Verify the operating temperature range and material compatibility with the environment.

Signs of failure

Common failure modes for connectors of this kind include loose or corroded contacts, which can cause intermittent electrical connections, overheating, or complete loss of signal or power. Physical damage to the housing or latches may lead to disconnection. Check for bent or broken pins, signs of arcing or melting, and ensure the connector is fully seated and locked.

All specifications

Poles / outlets4
Pitch4.2
Colornatural
Materialpolyamide (pa66), nylon 6/6
Operating principlereceptacle (female socket)
Mounting featurefree hanging (in-line)
Connection typecrimp
Standardsul 94v-2, rohs
Number of rows2

Part numbers

SKU0039012040
Additional article728.640.902
Type designation5556
Type designation45750

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