Harwin M20-9752442 Rectangular Connector Header — Equivalent & Substitute Parts

Part Overview

The Harwin M20-9752442 is a through-hole, right-angle rectangular connector header with 24 positions at 2.54mm (0.100") pitch. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production, maintenance, and new design implementations. The connector features male pins, unshrouded design, and solder termination suitable for board-to-board or cable applications. Identifying compatible alternatives ensures design continuity and supply chain flexibility.

Key Parameters

Parameter	Value
Manufacturer Part Number	M20-9752442
Manufacturer	Harwin Inc.
Category	Rectangular Connectors
Description	CONN HEADER R/A 24POS 2.54MM
Connector Type	Header, Cuttable
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	24
Number of Rows	1
Mounting Type	Through Hole, Right Angle
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Contact Finish - Post	Tin
Contact Material	Brass
Insulation Material	Polyamide (PA6T), Nylon 6T
Operating Temperature	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0
Insulation Color	Black
Current Rating	3A per Contact
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the M20-9752442 is determined by strict alignment with the following critical parameters:

Pitch - Mating: 0.100" (2.54mm) — exact match required
Number of Positions: 24 — exact match required
Number of Rows: 1 — exact match required
Mounting Type: Through Hole, Right Angle — exact match required
Contact Type: Male Pin — exact match required
Termination: Solder — exact match required
Fastening Type: Push-Pull — exact match required
Material Flammability Rating: UL94 V-0 — minimum requirement
Current Rating: 3A per Contact — minimum requirement
Operating Temperature Range: Must encompass or exceed -40°C ~ 105°C

All substitute parts listed below meet these criteria. Variations in contact material, insulation material, contact finish specifications, and post length are permissible within the scope of electrical and mechanical compatibility.

Parameter Comparison

Parameter	M20-9752442 (Harwin)	2324-5111-TG (3M)	77315-113-24LF (Amphenol ICC)	77315-801-24LF (Amphenol ICC)	HTSW-124-08-F-S-RA (Samtec)	HTSW-124-08-S-S-RA (Samtec)	HTSW-124-10-T-S-RA (Samtec)	HTSW-124-10-TM-S-RA (Samtec)	HTSW-124-12-T-S-RA (Samtec)	PRPC024SBAN-M71RC (Sullins)
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	24	24	24	24	24	24	24	24	24	24
Number of Rows	1	1	1	1	1	1	1	1	1	1
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Length - Mating	0.228" (5.80mm)	0.230" (5.84mm)	0.225" (5.72mm)	0.225" (5.72mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.230" (5.84mm)
Contact Length - Post	0.118" (3.00mm)	0.120" (3.05mm)	0.136" (3.46mm)	0.101" (2.57mm)	0.090" (2.29mm)	0.090" (2.29mm)	0.390" (9.91mm)	0.390" (9.91mm)	0.590" (14.99mm)	0.120" (3.05mm)
Insulation Height	0.100" (2.54mm)	0.100" (2.54mm)	0.094" (2.40mm)	0.094" (2.40mm)	0.122" (3.10mm)	0.122" (3.10mm)	0.122" (3.10mm)	0.122" (3.10mm)	0.122" (3.10mm)	0.098" (2.50mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold	Gold	Tin	Tin	Tin	Gold
Contact Finish - Post	Tin	Tin-Lead	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Gold
Contact Material	Brass	Copper Alloy	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Brass
Insulation Material	Polyamide (PA6T), Nylon 6T	Thermoplastic, Glass Filled	Thermoplastic	Thermoplastic	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Polybutylene Terephthalate (PBT)
Operating Temperature	-40°C ~ 105°C	-55°C ~ 105°C	-65°C ~ 125°C	-65°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Color	Black	Black	Black	Black	Natural	Natural	Natural	Natural	Natural	Black
Current Rating	3A per Contact	3A	3A per Contact	3A per Contact	Varies by Wire Gauge	Varies by Wire Gauge	Varies by Wire Gauge	Varies by Wire Gauge	Varies by Wire Gauge	3A per Contact
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	RoHS non-compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	Not Applicable	Not Applicable	Not Applicable	Not Applicable	Not Applicable	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitutes (Active Status, Full Compliance):

The following parts are recommended as direct substitutes based on active product status and regulatory compliance alignment:

77315-113-24LF (Amphenol ICC) — Active status, RoHS Compliant, extended operating temperature range (-65°C ~ 125°C), BERGSTIK® series with breakaway capability
77315-801-24LF (Amphenol ICC) — Active status, RoHS Compliant, extended operating temperature range (-65°C ~ 125°C), BERGSTIK® series with shorter post length (0.101")
PRPC024SBAN-M71RC (Sullins Connector Solutions) — Active status, ROHS3 Compliant, matching operating temperature range (-40°C ~ 105°C), breakaway header with gold post finish
HTSW-124-08-S-S-RA (Samtec) — Active status, ROHS3 Compliant, extended operating temperature range (-55°C ~ 125°C), LCP insulation material

Secondary Substitutes (Compliance Considerations):

2324-5111-TG (3M) — Active status but RoHS non-compliant; suitable only for applications without RoHS requirements
HTSW-124-08-F-S-RA (Samtec) — Active status, ROHS3 Compliant, extended operating temperature range (-55°C ~ 125°C); note wire gauge-dependent current rating
HTSW-124-10-T-S-RA (Samtec) — Active status, ROHS3 Compliant; extended post length (0.390") for specific mechanical requirements
HTSW-124-10-TM-S-RA (Samtec) — Active status, ROHS3 Compliant; extended post length (0.390") with tin mating finish
HTSW-124-12-T-S-RA (Samtec) — Active status, ROHS3 Compliant; longest post length (0.590") for specialized applications

Frequently Asked Questions (FAQ)

Q: What makes a part a valid substitute for the M20-9752442?

A: A substitute must match the following critical parameters: 0.100" (2.54mm) pitch, 24 positions, single row, through-hole right-angle mounting, male pin contact type, solder termination, push-pull fastening, UL94 V-0 flammability rating, and minimum 3A per contact current rating. Operating temperature range must encompass or exceed -40°C to 105°C.

Q: Can I use the 2324-5111-TG (3M) as a direct replacement?

A: The 2324-5111-TG meets all electrical and mechanical compatibility criteria. However, it is RoHS non-compliant, whereas the original M20-9752442 is ROHS3 compliant. Use this substitute only in applications without RoHS regulatory requirements.

Q: What is the difference between the Amphenol ICC 77315-113-24LF and 77315-801-24LF?

A: Both are BERGSTIK® series headers with identical pitch, position count, and mounting type. The primary difference is contact post length: 77315-113-24LF has 0.136" (3.46mm) post length, while 77315-801-24LF has 0.101" (2.57mm) post length. Select based on PCB thickness and mechanical clearance requirements.

Q: Why do Samtec HTSW series parts have variable post lengths?

A: Samtec offers multiple post length options within the HTSW-124 base product family to accommodate different PCB thicknesses and application requirements. HTSW-124-08-S-S-RA provides 0.090" (2.29mm) post length, while HTSW-124-10-T-S-RA and HTSW-124-10-TM-S-RA provide 0.390" (9.91mm), and HTSW-124-12-T-S-RA provides 0.590" (14.99mm). Select the post length matching your specific mechanical design.

Q: Are all substitute parts available in the same packaging?

A: Packaging varies by manufacturer and part number. The original M20-9752442 does not specify packaging. Most substitutes are available in bulk packaging. Verify packaging specifications with your supplier for order quantities and handling requirements.

Q: What is the significance of contact finish differences (Gold vs. Tin)?

A: Contact finish affects signal integrity, corrosion resistance, and mating durability. Gold-plated mating contacts (M20-9752442, 2324-5111-TG, 77315-113-24LF, 77315-801-24LF, HTSW-124-08-F-S-RA, HTSW-124-08-S-S-RA, PRPC024SBAN-M71RC) provide superior corrosion resistance. Tin-plated mating contacts (HTSW-124-10-T-S-RA, HTSW-124-10-TM-S-RA, HTSW-124-12-T-S-RA) are suitable for standard applications with adequate environmental protection.

Q: Can I substitute a part with extended operating temperature range?

A: Yes. Parts with extended operating temperature ranges (such as Amphenol ICC 77315 series at -65°C ~ 125°C or Samtec HTSW series at -55°C ~ 125°C) are fully compatible with applications designed for the original -40°C ~ 105°C range. Extended temperature capability provides additional design margin without compromising compatibility.

Q: What does "breakaway" connector type mean?

A: Breakaway headers (Amphenol ICC BERGSTIK® series and Sullins PRPC024SBAN-M71RC) feature individual pin segments that can be separated or cut to create smaller connector configurations. Standard headers (3M 2300 series, Samtec HTSW series) do not have this capability. Both types are mechanically and electrically compatible for 24-position applications.

Q: Is the Sullins PRPC024SBAN-M71RC a suitable replacement?

A: Yes. The PRPC024SBAN-M71RC meets all substitution criteria: ROHS3 compliant, matching operating temperature range (-40°C ~ 105°C), 3A per contact current rating, and identical pitch, position count, and mounting configuration. It features breakaway capability and gold post finish, providing additional design flexibility.

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