Equivalent & Substitute Parts for M20-9710545

Part Overview

The Harwin M20-9710545 is a rectangular connector header, right-angle configuration, with 5 positions at 0.100" (2.54mm) pitch. This through-hole, solder-terminated component is designed for board-to-board or cable connections with male pin contacts and unshrouded design. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional and electrical compatibility for new designs or production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	M20-9710545
Manufacturer	Harwin Inc.
Category	Rectangular Connectors
Connector Type	Header, Cuttable
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	5
Number of Rows	1
Mounting Type	Through Hole, Right Angle
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
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
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the M20-9710545 is determined by strict adherence to the following critical parameters:

Primary Matching Criteria:

Pitch - Mating: 0.100" (2.54mm)
Number of Positions: 5
Number of Rows: 1
Connector Type: Header
Contact Type: Male Pin
Mounting Type: Through Hole, Right Angle
Termination: Solder
Fastening Type: Push-Pull
Shrouding: Unshrouded
Style: Board to Board or Cable

Secondary Compatibility Parameters:

Contact Finish - Mating: Gold (primary) or Tin (acceptable alternative)
Material Flammability Rating: UL94 V-0
Current Rating: 3A per Contact (minimum)
RoHS Status: ROHS3 Compliant or RoHS Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts must maintain compatibility across all primary matching criteria. Variations in contact length, insulation height, and contact material are permissible provided the connector maintains mechanical and electrical interface compatibility with mating receptacles designed for 2.54mm pitch, 5-position headers.

Parameter Comparison

Parameter	M20-9710545 (Main)	M20-9960545	0022288050	0022288052	68016-205HLF	68488-205HLF	77315-124-05LF	77315-424-05LF
Manufacturer	Harwin Inc.	Harwin Inc.	Molex	Molex	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
Connector Type	Header, Cuttable	Header, Cuttable	Header, Breakaway	Header, Breakaway	Header	Header	Header, Breakaway	Header, Breakaway
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)
Number of Positions	5	5	5	5	5	5	5	5
Number of Rows	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
Termination	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
Contact Finish - Mating	Gold	Gold	Tin	Gold	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™	Tin
Contact Length - Mating	0.276" (7.00mm)	0.240" (6.10mm)	0.244" (6.20mm)	0.244" (6.20mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.266" (6.75mm)	0.266" (6.75mm)
Contact Length - Post	0.118" (3.00mm)	0.118" (3.00mm)	0.120" (3.05mm)	0.120" (3.05mm)	0.120" (3.05mm)	0.180" (4.57mm)	0.112" (2.84mm)	0.112" (2.84mm)
Insulation Height	0.100" (2.54mm)	0.100" (2.54mm)	0.098" (2.50mm)	0.098" (2.50mm)	0.095" (2.41mm)	0.095" (2.41mm)	0.094" (2.40mm)	0.094" (2.40mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square
Contact Material	Brass	Brass	Not specified	Not specified	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	Polyamide (PA6T), Nylon 6T	Polyamide (PA6T), Nylon 6T	Polyamide (PA), Nylon, Glass Filled	Polyamide (PA), Nylon, Glass Filled	Not specified	Not specified	Thermoplastic	Thermoplastic
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	Not specified	Not specified	-65°C ~ 130°C	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°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
Current Rating	3A per Contact	3A per Contact	Not specified	Not specified	3A	3A	3A per Contact	3A per Contact
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: M20-9960545

The Harwin M20-9960545 is the manufacturer-recommended direct substitute. It maintains identical pitch, position count, row configuration, and electrical specifications as the obsolete M20-9710545. Both parts share the same series designation (M20), identical operating temperature range (-40°C ~ 105°C), and ROHS3 compliance status. The M20-9960545 is currently in active production with 686 units in stock, ensuring supply continuity. Minor variation in contact length (0.240" vs. 0.276") does not affect mating compatibility with standard 2.54mm pitch receptacles.

Secondary Recommendations: Molex KK254 Series (0022288050, 0022288052)

The Molex 0022288050 and 0022288052 are functionally equivalent alternatives from the KK254 series. Both maintain the critical 0.100" (2.54mm) pitch, 5-position, single-row configuration with through-hole right-angle mounting and solder termination. Both are ROHS3 compliant with MSL 1 rating. The 0022288050 features tin contact finish, while 0022288052 provides gold finish matching the original specification. High inventory availability (6942 and 3217 units respectively) supports production requirements.

Tertiary Recommendations: Amphenol ICC BERGSTIK® Series (68016-205HLF, 68488-205HLF, 77315-124-05LF, 77315-424-05LF)

The Amphenol ICC BERGSTIK® series connectors (68016-205HLF, 68488-205HLF, 77315-124-05LF, 77315-424-05LF) provide alternative solutions with identical pitch and position specifications. All maintain 3A current rating and UL94 V-0 flammability compliance. The 68016-205HLF and 68488-205HLF are BERGSTIK® II variants with extended operating temperature range (-65°C ~ 130°C and -65°C ~ 125°C respectively). The 77315-124-05LF and 77315-424-05LF are BERGSTIK® variants with gold and tin contact finishes respectively. These alternatives support applications requiring extended temperature performance or specific contact finish requirements.

Compliance Considerations:

All substitute parts maintain UL94 V-0 material flammability rating and MSL 1 moisture sensitivity level. RoHS compliance is confirmed across all alternatives (ROHS3 or RoHS Compliant). REACH status varies; Amphenol ICC parts are REACH Affected, while Harwin and Molex parts are REACH Unaffected or REACH Affected. Verify REACH compliance requirements for your specific application jurisdiction.

Frequently Asked Questions (FAQ)

Q: Can M20-9960545 directly replace M20-9710545 in existing designs?

A: Yes. The M20-9960545 is the manufacturer-recommended substitute with identical pitch (0.100" / 2.54mm), position count (5), row configuration (1), mounting type (through-hole right-angle), and termination method (solder). The primary difference is contact length (0.240" vs. 0.276"), which does not affect mating compatibility with standard 2.54mm pitch receptacles. Both parts are ROHS3 compliant with identical operating temperature range (-40°C ~ 105°C).

Q: What is the difference between gold and tin contact finishes?

A: Contact finish affects corrosion resistance and mating force characteristics. Gold finish (0022288052, 68016-205HLF, 77315-124-05LF) provides superior corrosion resistance and lower contact resistance, suitable for applications requiring long-term reliability in corrosive environments. Tin finish (0022288050, 77315-424-05LF) is cost-effective and suitable for general-purpose applications with standard environmental conditions. Both finishes are acceptable substitutes provided the mating receptacle is compatible with the selected finish type.

Q: Are Molex KK254 series connectors compatible with Harwin M20 series receptacles?

A: Mechanical and electrical compatibility depends on the specific receptacle design. Both Molex KK254 and Harwin M20 headers share the 0.100" (2.54mm) pitch standard. However, verify that the mating receptacle is designed to accept either manufacturer's connector. Contact finish compatibility (gold vs. tin) and contact length variations may affect mating force and long-term reliability. Consult the receptacle manufacturer's specifications for confirmed compatibility.

Q: What is the significance of the BERGSTIK® II designation versus BERGSTIK®?

A: BERGSTIK® II (68016-205HLF, 68488-205HLF) represents an updated product line with enhanced specifications compared to the original BERGSTIK® series (77315-124-05LF, 77315-424-05LF). BERGSTIK® II variants offer extended operating temperature range (-65°C ~ 130°C vs. -65°C ~ 125°C) and improved contact design. Both series maintain identical pitch, position count, and electrical ratings. Selection between series depends on application temperature requirements and design preferences.

Q: How do contact length variations affect connector performance?

A: Contact length (mating and post) determines the depth of insertion into the mating receptacle and the solder joint length on the PCB. Variations within the range provided (0.230" to 0.276" mating length, 0.112" to 0.180" post length) are acceptable for standard 2.54mm pitch applications. Shorter post lengths (0.112") may require PCB design adjustment for adequate solder joint formation. Longer post lengths (0.180") provide increased solder joint strength. Verify PCB pad design compatibility with the selected substitute part's post length.

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

A: No. Packaging varies by manufacturer and part number. M20-9710545 is listed as obsolete with unspecified packaging. M20-9960545 is supplied in Bulk packaging. Molex parts (0022288050, 0022288052) are supplied in Bulk. Amphenol ICC parts vary: 68016-205HLF in Bag, 68488-205HLF in Bulk, and 77315-124-05LF and 77315-424-05LF in Bulk. Confirm packaging requirements for your procurement and assembly processes.

Q: What is the Moisture Sensitivity Level (MSL) and why is it important?

A: MSL 1 (Unlimited) indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All substitute parts listed carry MSL 1 rating, eliminating moisture-related reliability concerns. This simplifies procurement, storage, and assembly processes compared to higher MSL components requiring controlled humidity environments.

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