M20-9733745 Equivalent & Substitute Parts

Part Overview

The M20-9733745 is a rectangular connector header manufactured by Harwin Inc., designed for through-hole mounting applications. This 37-position, single-row header operates at 0.100" (2.54mm) pitch and supports 3A per contact with an operating temperature range of -40°C to 105°C. The part is classified as obsolete, making identification of equivalent substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

M20-9733745

Harwin Inc.In Stock: 1143M20-9733745 Datasheet

Current PartRFQ

890-70-037-10-002101

Preci-DipIn Stock: 1222890-70-037-10-002101 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the M20-9733745 is based on strict alignment of the following critical parameters:

• Pitch and Position Count: 0.100" (2.54mm) pitch with 37 positions ensures mechanical and electrical compatibility with existing PCB layouts and mating connectors.
• Connector Configuration: Single-row, unshrouded header with male pins for board-to-board connectivity.
• Mounting and Termination: Through-hole solder termination maintains compatibility with standard PCB assembly processes.
• Electrical Performance: 3A per contact current rating and contact material (brass with gold finish) support equivalent signal integrity and power delivery.
• Environmental and Compliance Standards: UL94 V-0 flammability rating, ROHS3 compliance, and MSL 1 rating ensure functional equivalence in regulated applications.

The substitute part 890-70-037-10-002101 (Preci-Dip) meets all critical substitution criteria while offering active product status and extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The 890-70-037-10-002101 (Preci-Dip) is a direct functional equivalent to the M20-9733745. Both parts maintain identical pitch, position count, contact configuration, and electrical ratings. The substitute part offers the advantage of active product status, ensuring long-term availability and supply chain continuity. Both parts satisfy UL94 V-0 flammability requirements and ROHS3 compliance, making them suitable for equivalent applications. The Preci-Dip part provides an extended operating temperature range (-55°C to 125°C versus -40°C to 105°C), which may provide additional thermal margin in demanding environments. Contact length specifications and insulation materials are functionally equivalent between the two parts.

Frequently Asked Questions (FAQ)

Q: Can the 890-70-037-10-002101 be used as a direct replacement for the M20-9733745?

A: Yes. Both parts share identical pitch (0.100"), position count (37), contact configuration (male pin, single row), mounting type (through hole), and current rating (3A). Mechanical and electrical compatibility is maintained.

Q: What are the key differences between these parts?

A: The primary differences are product status (Preci-Dip is active; Harwin is obsolete) and operating temperature range (Preci-Dip: -55°C to 125°C; Harwin: -40°C to 105°C). Contact post length differs slightly (3.00mm versus 3.10mm), and insulation material composition varies (glass-filled nylon versus standard nylon 6T).

Q: Are both parts RoHS3 compliant?

A: Yes. Both the M20-9733745 and 890-70-037-10-002101 are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity level.

Q: What is the significance of the cuttable feature on the M20-9733745?

A: The cuttable feature allows the header to be segmented into smaller connector configurations. The Preci-Dip substitute does not explicitly list this feature in the provided specifications.

Q: Are there any packaging differences?

A: The M20-9733745 packaging is not specified in the provided data. The 890-70-037-10-002101 is supplied in bulk packaging.