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You are here: Home » Products » IDC Connector » 2.54mm pitch IDC connector » 2.54mm Pitch Feed Through IDC M2051-N
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2.54mm Pitch Feed Through IDC M2051-N

  • M2051-N
  • HRB
  • 8536909000

Product Description

2.54 Pitch IDC Feed Through IDC without Polarizing Tabs

HRB P/N definition

M2051-N

    ① ② ③④

①M2051: HRB series 

②Without R(Blank): Feed through 180°

③N: Number of pins: 2-24

④Without R(Blank): Without polarizing tabs


M2051-N dimensions


Part No.
Dimensions Part No.
Dimensions Part No.
Dimensions
UL94V-2 Circuits Dim: A Dim: B UL94V-2 Circuits Dim: A Dim: B UL94V-2 Circuits Dim: A Dim: B
M2051-2 2 2.54 5.08 M2051-10 10 22.86 25.40 M2051-18 18 43.18 45.72
M2051-3 3 5.08 7.62 M2051-11 11 25.40 27.94 M2051-19 19 45.72 48.26
M2051-4 4 7.62 10.16 M2051-12 12 27.94 30.48 M2051-20 20 48.26 50.80
M2051-5 5 10.16 12.70 M2051-13 13 30.48 33.02 M2051-21 21 50.80 53.34
M2051-6 6 12.70 15.24 M2051-14 14 33.02 35.56 M2051-22 22 53.34 55.88
M2051-7 7 15.24 17.78 M2051-15 15 35.56 38.10 M2051-23 23 55.88 58.42
M2051-8 8 17.78 20.32 M2051-16 16 38.10 40.64 M2051-24 24 58.42 60.96
M2051-9 9 20.32 22.86 M2051-17 17 40.64 43.18




Key Features

  • Standard 2.54mm pitch IDC, fits AWG22-26 discrete conductors

  • Feed-through design enables daisy-chain mid-cable wiring

  • No polarizing tabs offers greater mating flexibility 

  • IDC solder-free termination, quick tool-free assembly

  • Matches M2545 vertical and M2545R right angle PCB header for wire-to-board connection

  • Fits M2053 cover to protect contacts against dust & moisture

  • UL94V-2 flame retardant housing, RoHS compliant


Mating diagram

  • Designed to pair with M2053 series housing covers, effectively preventing dust, moisture and foreign debris from damaging exposed contact terminals.

  • M2051-N: Indirect PCB mating; mates with M2545 and M2545R series PCB headers to achieve reliable wire-to-board interconnection.






Technical parameters

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FAQs

Frenquently Asked Questions


Technical FAQs


Q1: What wire gauge fits M2051-N feed through IDC?

A: Designed for AWG22~26 discrete single conductors, standard 2.54mm pitch.

Q2: What are the differences in Application: With vs Without Polarizing Tabs?

Answers are below:

①With Polarizing Tabs

  • Features integrated polarization tabs that ensure correct mating orientation.

  • Prevents incorrect insertion and reduces the risk of miswiring or connection errors.

  • Recommended for applications where reliable, error-free assembly is critical.

  • Available with integrated polarization tabs to prevent incorrect mating and ensure proper connector orientation during assembly

②Without Polarizing Tabs

  • Standard connector design without polarization features.

  • Offers greater mating flexibility but requires proper alignment during installation.

  • Suitable for applications where connector orientation is clearly identified and the risk of mis-mating is low.

  • Non-polarized versions are also available for applications where keying is not required.

Note: Electrical & IDC crimp performance are identical for both versions.

Q3: Can this IDC mate with PCB header directly?
A: Indirect PCB connection only, pair with M2545 vertical and M2545R right angle PCB header for wire-to-board assembly.
Q4: Is matching protective cover available?
A: Compatible with M2053 series cover to shield pins from dust, moisture and debris.
Q5: Material & flammability grade of insulator housing?
A: UL94V-2 flame retardant nylon; tin-plated copper alloy contacts, RoHS compliant.
Q6: Can it realize middle-of-cable feed-through daisy chain wiring?

A: Yes, feed-through structure allows continuous in-line wiring without cutting finished harness.

Q7: What are the advantages of a 180° IDC Feed through connector?

A: Key benefits include:

  • Supports daisy-chain wiring, allowing multiple connectors to be installed on a single cable assembly.

  • Reduces cable and assembly costs by minimizing the number of separate cable harnesses required.

  • Ideal for bus architectures and distributed I/O systems.

  • Simplifies field maintenance, as individual devices can often be disconnected without replacing the entire cable assembly.

Typical applications: Industrial I/O modules, LED display systems, control networks, and multi-board assemblies.

Q8: Which connector type should I choose, closed end IDC or feed through IDC?

A: Selection depends on your application requirements:

Application Recommended Connector
Point-to-point connections 90° IDC Closed End
Space-constrained designs 90° IDC Closed End
High-vibration environments 90° IDC Closed End
Daisy-chain wiring 180° IDC Feedthrough
Multi-board systems 180° IDC Feedthrough
Bus or distributed I/O architectures 180° IDC Feedthrough
Cost-sensitive cable assemblies 180° IDC Feedthrough


Order FAQs


Q1: Available pin counts for M2051-N series?

A: Standard range from 2P to 24P, customized pin positions negotiable upon bulk order.
Q2: What’s your MOQ for regular stock items?
A: Small MOQ for in-stock specs; customized color/spec needs higher minimum order quantity.
Q3: Lead time for sample & mass production?
A: Samples ship within 1~3 working days; bulk orders around 7~15 working days based on quantity.
Q4: Can we customize housing color or contact plating?
A: Custom black/other housing color, gold plating contacts available for large-volume orders.
Q5: Are free samples available for customer test?
A: Free small quantity samples offered, buyer covers international courier freight.



Specification

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Application

Widely used in industrial control, power supply, home appliance, LED lighting and consumer electronics internal interconnection.

  • Industrial control equipment & instrumentation

  • Power supply and driver modules

  • Household appliances & smart home devices

  • LED lighting and control wiring

  • Office automation & small consumer electronics

  • Internal daisy-chain wire harness interconnection

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