Equivalent & Substitute Parts for M20-9954046

Part Overview

The Harwin M20-9954046 is a rectangular connector header, right-angle mounted, with 80 positions at 2.54mm pitch. This through-hole component is designed for board-to-board or cable connections with male pin contacts and solder termination. The part is currently listed as obsolete, making equivalent substitutes necessary for ongoing design requirements and production continuity. Substitute parts must maintain compatibility across electrical ratings, mechanical dimensions, and environmental specifications while accommodating the transition from the discontinued M20 series.

Key Parameters

Parameter	M20-9954046
Connector Type	Header, Cuttable
Number of Positions	80
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Contact Type	Male Pin
Termination	Solder
Current Rating	3A per Contact
Operating Temperature	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the M20-9954046 is determined by the following critical parameters:

Primary Compatibility Criteria:

Number of Positions: 80 (exact match required)
Number of Rows: 2 (exact match required)
Pitch - Mating: 0.100" (2.54mm) (exact match required)
Row Spacing - Mating: 0.100" (2.54mm) (exact match required)
Mounting Type: Through Hole, Right Angle (exact match required)
Contact Type: Male Pin (exact match required)
Termination: Solder (exact match required)
Current Rating: 3A per Contact (exact match required)
Operating Temperature: -40°C ~ 105°C (exact match required)
Material Flammability Rating: UL94 V-0 (exact match required)
RoHS Status: ROHS3 Compliant (exact match required)

Secondary Tolerance Parameters:

Contact Length - Mating: Variations within 0.010" acceptable
Contact Length - Post: Variations within 0.010" acceptable
Insulation Height: Variations within 0.010" acceptable
Contact Finish: Tin or Gold acceptable (Gold provides enhanced corrosion resistance)
Insulation Material: Polyamide (PA6T) or Polybutylene Terephthalate (PBT) acceptable

All four substitute parts meet the primary compatibility criteria. Variations in contact dimensions and insulation materials fall within acceptable engineering tolerances for this connector category.

Parameter Comparison

Parameter	M20-9954046	M20-9953646	PREC040DBAN-M71RC	PREC040DBBN-M71RC	PRPC040DBBN-M71RC
Manufacturer	Harwin Inc.	Harwin Inc.	Sullins Connector Solutions	Sullins Connector Solutions	Sullins Connector Solutions
Product Status	Obsolete	Active	Active	Active	Active
Number of Positions	80	72	80	80	80
Number of Rows	2	2	2	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)	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	Through Hole, Right Angle
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Termination	Solder	Solder	Solder	Solder	Solder
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.230" (5.84mm)
Contact Length - Post	0.118" (3.00mm)	0.118" (3.00mm)	0.120" (3.05mm)	0.220" (5.58mm)	0.220" (5.58mm)
Insulation Height	0.200" (5.08mm)	0.200" (5.08mm)	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)
Contact Finish - Mating	Tin	Tin	Tin	Tin	Gold
Contact Material	Brass	Brass	Brass	Brass	Brass
Insulation Material	Polyamide (PA6T), Nylon 6T	Polyamide (PA6T), Nylon 6T	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Current Rating	3A per Contact	3A per Contact	3A	3A	3A per Contact
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitute - Full 80-Position Equivalents:

The three Sullins Connector Solutions parts (PREC040DBAN-M71RC, PREC040DBBN-M71RC, PRPC040DBBN-M71RC) provide direct electrical and mechanical equivalence to the M20-9954046 with all 80 positions intact. All three are active products with ROHS3 compliance and UL94 V-0 flammability ratings. Selection between these three depends on contact finish requirements:

PREC040DBAN-M71RC: Tin finish, shorter post length (0.120"), suitable for standard applications
PREC040DBBN-M71RC: Tin finish, extended post length (0.220"), for applications requiring deeper board penetration
PRPC040DBBN-M71RC: Gold finish with flash thickness, extended post length (0.220"), for high-reliability or corrosion-sensitive environments

Secondary Substitute - Reduced Position Alternative:

The Harwin M20-9953646 provides an active product alternative within the same manufacturer family. This part reduces position count to 72 while maintaining identical pitch, row spacing, mounting type, and electrical ratings. This substitute is applicable only when design requirements can accommodate the reduced connector density.

All substitute parts maintain compliance with ROHS3 and REACH requirements. Operating temperature range and current ratings remain consistent across all options.

Frequently Asked Questions (FAQ)

Q: Can M20-9953646 be used as a direct replacement for M20-9954046?

A: M20-9953646 is electrically and mechanically compatible but provides only 72 positions instead of 80. Use this substitute only if your design can function with reduced position count. The identical pitch, row spacing, mounting type, and electrical ratings ensure compatibility at the connector interface level.

Q: What is the difference between the three Sullins parts?

A: All three Sullins parts (PREC040DBAN-M71RC, PREC040DBBN-M71RC, PRPC040DBBN-M71RC) maintain 80 positions and identical pitch specifications. Differences are:

Contact post length: PREC040DBAN-M71RC has 0.120" posts; the other two have 0.220" posts
Contact finish: PREC040DBAN and PREC040DBBN use tin finish; PRPC040DBBN uses gold finish
Insulation material: All use PBT instead of the original polyamide

Q: Does contact finish affect electrical performance?

A: Both tin and gold finishes meet the 3A per contact current rating and operating temperature range. Gold finish (PRPC040DBBN-M71RC) provides enhanced corrosion resistance in high-humidity or chemically aggressive environments. Tin finish parts are suitable for standard indoor applications.

Q: Are there dimensional compatibility concerns with the Sullins substitutes?

A: Contact length variations between the original (0.240" mating, 0.118" post) and Sullins parts (0.230" mating, 0.120" or 0.220" post) fall within acceptable engineering tolerances for this connector category. Insulation height differences (0.200" vs. 0.197") are negligible. Verify board layout clearances for post length selection.

Q: What is the significance of the different insulation materials?

A: The original M20-9954046 uses polyamide (PA6T/Nylon 6T); Sullins substitutes use polybutylene terephthalate (PBT). Both materials meet UL94 V-0 flammability requirements and operate across the -40°C to 105°C temperature range. PBT offers slightly improved moisture resistance and dimensional stability.

Q: Are all substitutes available in the same packaging?

A: M20-9954046 packaging is not specified in the data. M20-9953646, PREC040DBAN-M71RC, PREC040DBBN-M71RC, and PRPC040DBBN-M71RC are all available in bulk packaging, suitable for production assembly.

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