M20-9753046 Equivalent & Substitute Parts

Part Overview

The M20-9753046 is a rectangular connector header manufactured by Harwin Inc., designed for through-hole, right-angle mounting applications. This 30-position connector operates at 0.100" (2.54mm) pitch with male pin contacts rated for 3A per contact. The part is currently listed as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	M20-9753046
Manufacturer	Harwin Inc.
Category	Rectangular Connectors
Connector Type	Header, Cuttable
Number of Positions	30
Pitch - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Contact Type	Male Pin
Current Rating	3A per Contact
Operating Temperature	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the M20-9753046 is determined by the following critical parameters:

Connector Position Count: 30 positions (exact match required for direct board compatibility)
Pitch Specification: 0.100" (2.54mm) mating pitch (non-negotiable for mating interface)
Mounting Configuration: Through hole, right-angle orientation
Contact Type: Male pin contacts
Termination Method: Solder termination
Current Rating: Minimum 3A per contact
Operating Temperature Range: -40°C to 105°C minimum
Compliance Standards: UL94 V-0 flammability rating, ROHS3 compliance

Substitute parts must maintain these core electrical and mechanical parameters to ensure functional equivalence in existing applications.

Parameter Comparison

Parameter	M20-9753046 (Main)	M20-9753646	HTSW-130-08-TM-S-RA	PREC030SBAN-M71RC
Manufacturer	Harwin Inc.	Harwin Inc.	Samtec Inc.	Sullins Connector Solutions
Number of Positions	30	36	30	30
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	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
Termination	Solder	Solder	Solder	Solder
Current Rating	3A per Contact	3A per Contact	Varies by Wire Gauge	3A per Contact
Operating Temperature	-40°C ~ 105°C	-40°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
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active
Contact Material	Brass	Brass	Phosphor Bronze	Brass
Insulation Material	Polyamide (PA6T), Nylon 6T	Polyamide (PA6T), Nylon 6T	Liquid Crystal Polymer (LCP)	Polybutylene Terephthalate (PBT)
Contact Length - Mating	0.228" (5.80mm)	0.228" (5.80mm)	0.230" (5.84mm)	0.230" (5.84mm)
Contact Length - Post	0.118" (3.00mm)	0.118" (3.00mm)	0.090" (2.29mm)	0.120" (3.05mm)
Insulation Height	0.100" (2.54mm)	0.100" (2.54mm)	0.122" (3.10mm)	0.098" (2.50mm)

Engineering Selection Recommendations

Direct Equivalent (30-Position Match):

HTSW-130-08-TM-S-RA (Samtec Inc.) and PREC030SBAN-M71RC (Sullins Connector Solutions) are functionally equivalent to the M20-9753046. Both maintain the 30-position configuration, 0.100" pitch, through-hole right-angle mounting, and solder termination. Both are active products with ROHS3 compliance and UL94 V-0 flammability ratings. The Samtec part extends the operating temperature range to -55°C, while the Sullins part maintains the -40°C to 105°C specification. Contact material and insulation material differ but remain within acceptable engineering tolerances for standard applications.

Alternative Configuration (36-Position):

M20-9753646 (Harwin Inc.) is a higher-position variant with 36 positions at the same 0.100" pitch. This part is from the same manufacturer and series as the original, offering design continuity. However, the increased position count requires board layout modification and is suitable only when additional connector positions are required or can be accommodated.

All substitute parts carry active product status, ensuring ongoing availability and manufacturing support compared to the obsolete M20-9753046.

Frequently Asked Questions (FAQ)

Q: Can M20-9753646 be used as a direct replacement for M20-9753046?

A: M20-9753646 has 36 positions versus 30 positions in the original part. Direct substitution is not possible without board redesign. Use only if additional connector positions are required or can be left unloaded.

Q: What is the primary difference between HTSW-130-08-TM-S-RA and PREC030SBAN-M71RC?

A: Both maintain 30-position configuration and 0.100" pitch. HTSW-130-08-TM-S-RA uses Phosphor Bronze contacts and Liquid Crystal Polymer insulation with extended temperature range (-55°C to 105°C). PREC030SBAN-M71RC uses Brass contacts and PBT insulation with standard temperature range (-40°C to 105°C). Contact post length differs: 0.090" versus 0.120" respectively.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance and UL94 V-0 flammability ratings, matching the original M20-9753046 specifications.

Q: Does insulation material affect connector performance in standard applications?

A: Insulation material differences (Nylon 6T, LCP, PBT) do not affect electrical performance for standard board-to-board or cable applications within the specified operating temperature range. Material selection reflects manufacturing process and environmental durability characteristics.

Q: What is the impact of contact material differences?

A: Brass and Phosphor Bronze contacts both provide adequate conductivity and durability for 3A per contact applications. Contact material selection reflects manufacturing standards and does not affect electrical performance in standard applications.

Q: Can the 30-position connectors be cut to fewer positions?

A: M20-9753046 and PREC030SBAN-M71RC are specified as cuttable or breakaway headers, allowing position reduction. HTSW-130-08-TM-S-RA specifications do not indicate cuttable design; verify with manufacturer if position reduction is required.

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