M20-9744046 Equivalent & Substitute Parts

Part Overview

The M20-9744046 is a rectangular connector header manufactured by Harwin Inc., designed for through-hole, right-angle board-to-board or cable applications. This 80-position, 2-row connector with 0.100" (2.54mm) pitch provides male pin contacts with tin finish and operates across -40°C to 105°C. The part is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

M20-9744046

Harwin Inc.In Stock: 967M20-9744046 Datasheet

Current PartRFQ

PREC040DBAN-M71RC

Sullins Connector SolutionsIn Stock: 2733PREC040DBAN-M71RC Datasheet

MFR RecommendedRFQ

PREC040DBBN-M71RC

Sullins Connector SolutionsIn Stock: 1147PREC040DBBN-M71RC Datasheet

MFR RecommendedRFQ

PRPC040DBAN-M71RC

Sullins Connector SolutionsIn Stock: 9292PRPC040DBAN-M71RC Datasheet

MFR RecommendedRFQ

PRPC040DBBN-M71RC

Sullins Connector SolutionsIn Stock: 898PRPC040DBBN-M71RC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the M20-9744046 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• 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
• Fastening Type: Push-Pull
• Operating Temperature: -40°C ~ 105°C
• Current Rating: 3A per Contact
• Flammability Rating: UL94 V-0
• RoHS Status: ROHS3 Compliant

Allowable Variations:

• Connector Type: Header variants (Cuttable, Breakaway) are functionally equivalent for board-to-board applications
• Insulation Material: Polyamide (PA6T) and Polybutylene Terephthalate (PBT) are both acceptable thermoplastic materials meeting UL94 V-0
• Contact Finish: Tin or Gold finishes are both acceptable; Gold provides enhanced corrosion resistance
• Contact Length - Mating: Minor variations (0.228" to 0.230") are within tolerance
• Contact Length - Post: Variations (0.118" to 0.220") accommodate different PCB thicknesses
• Insulation Height: Variations (0.197" to 0.200") are within acceptable range

All four substitute parts from Sullins Connector Solutions meet these criteria and are classified as Active products, ensuring long-term availability.

Parameter Comparison

Engineering Selection Recommendations

All four Sullins Connector Solutions substitutes are classified as Active products, ensuring continued availability and manufacturing support. Each part maintains full compliance with ROHS3 and REACH requirements, matching the original M20-9744046 specifications.

Selection by Contact Post Length:

For standard PCB applications with typical 0.062" (1.57mm) board thickness, select PREC040DBAN-M71RC or PRPC040DBAN-M71RC with 0.120" (3.05mm) post length.

For applications requiring extended post length to accommodate thicker substrates or specific assembly requirements, select PREC040DBBN-M71RC or PRPC040DBBN-M71RC with 0.220" (5.58mm) post length.

Selection by Contact Finish:

For standard applications with tin-plated contacts, select PREC040DBAN-M71RC or PREC040DBBN-M71RC.

For applications requiring enhanced corrosion resistance or operating in harsh environments, select PRPC040DBAN-M71RC or PRPC040DBBN-M71RC with gold-plated contacts (flash thickness).

All substitutes maintain electrical and thermal performance equivalent to the original M20-9744046 across the full operating temperature range of -40°C to 105°C with 3A per contact current rating.

Frequently Asked Questions (FAQ)

Q: Can PREC040DBAN-M71RC directly replace M20-9744046 in existing designs?

A: Yes. PREC040DBAN-M71RC matches all critical parameters including 80 positions, 2 rows, 0.100" pitch, through-hole right-angle mounting, male pin contacts, 3A current rating, and -40°C to 105°C operating temperature. The breakaway connector type is functionally equivalent to the cuttable type for board-to-board applications. Both are UL94 V-0 rated and ROHS3 compliant.

Q: What is the difference between tin-plated and gold-plated contact options?

A: Tin-plated contacts (PREC040 series) provide standard electrical performance for general applications. Gold-plated contacts (PRPC040 series) offer enhanced corrosion resistance and are suitable for applications exposed to moisture, salt spray, or other corrosive environments. Both finishes maintain 3A per contact current rating and operate across -40°C to 105°C.

Q: Why are there two post length options (0.120" and 0.220")?

A: Post length determines how far the solder tail extends below the PCB surface. The 0.120" (3.05mm) option accommodates standard PCB thicknesses. The 0.220" (5.58mm) option provides extended reach for thicker substrates, multiple-layer assemblies, or applications requiring additional mechanical support. Select based on your specific PCB thickness and assembly requirements.

Q: Are the insulation material differences between Polyamide and PBT significant?

A: Both Polyamide (PA6T) and Polybutylene Terephthalate (PBT) are thermoplastic materials rated UL94 V-0. PBT offers slightly better dimensional stability and moisture resistance. For most applications, both materials are functionally equivalent. Select based on your specific environmental and thermal requirements.

Q: What is the inventory status of these substitute parts?

A: PRPC040DBAN-M71RC has the highest inventory at 9,215 pieces. PREC040DBAN-M71RC has 2,623 pieces. PREC040DBBN-M71RC has 1,112 pieces. PRPC040DBBN-M71RC has 843 pieces. All are classified as Active products with ongoing manufacturing support.

Q: Are all substitutes ROHS3 and REACH compliant?

A: Yes. All four Sullins Connector Solutions substitutes are ROHS3 compliant and REACH unaffected, matching the original M20-9744046 compliance status.