M20-8770946 Equivalent & Substitute Parts

Part Overview

The M20-8770946 is a surface mount rectangular connector header manufactured by Harwin Inc., featuring 9 positions at 0.100" (2.54mm) pitch. This connector is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The part is suitable for board-to-board or cable applications with solder termination and push-pull fastening.

Substiute Parts

M20-8770946

Harwin Inc.In Stock: 1072M20-8770946 Datasheet

Current PartRFQ

M20-8770942

Harwin Inc.In Stock: 2405M20-8770942 Datasheet

MFR RecommendedRFQ

TSM-109-01-L-SV

Samtec Inc.In Stock: 875TSM-109-01-L-SV Datasheet

MFR RecommendedRFQ

TSM-109-01-L-SV-P-TR

Samtec Inc.In Stock: 1066TSM-109-01-L-SV-P-TR Datasheet

MFR RecommendedRFQ

TSM-109-01-S-SV-P-TR

Samtec Inc.In Stock: 964TSM-109-01-S-SV-P-TR Datasheet

MFR RecommendedRFQ

TSM-109-01-S-SV-TR

Samtec Inc.In Stock: 995TSM-109-01-S-SV-TR Datasheet

MFR RecommendedRFQ

TSM-109-01-SM-SV

Samtec Inc.In Stock: 827TSM-109-01-SM-SV Datasheet

MFR RecommendedRFQ

TSM-109-01-T-SV-P-TR

Samtec Inc.In Stock: 1020TSM-109-01-T-SV-P-TR Datasheet

MFR RecommendedRFQ

TSM-109-01-TL-SV-P-TR

Samtec Inc.In Stock: 1034TSM-109-01-TL-SV-P-TR Datasheet

MFR RecommendedRFQ

TSM-109-01-TM-SV

Samtec Inc.In Stock: 1214TSM-109-01-TM-SV Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the M20-8770946 is determined by the following critical parameters that must remain consistent:

• Connector type (Header, Cuttable)
• Contact type (Male Pin)
• Pitch - Mating (0.100" / 2.54mm)
• Number of positions (9)
• Number of rows (1)
• Mounting type (Surface Mount)
• Termination (Solder)
• Fastening type (Push-Pull)
• Insulation height (0.100" / 2.54mm)
• Contact shape (Square)
• Material flammability rating (UL94 V-0)
• RoHS compliance status

All identified substitute parts meet these core requirements. Variations in contact material, contact finish, insulation material, and operating temperature range are permitted within the substitution scope, as these do not affect the fundamental mechanical and electrical interface compatibility.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are active products with ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's compliance profile.

Harwin Inc. M20-8770942 is the manufacturer-recommended direct substitute from the same series. It maintains identical mechanical and electrical interface specifications with the M20-8770946, differing only in contact finish (gold versus tin) and product status (active versus obsolete). This part is available in bulk packaging with higher inventory levels.

Samtec Inc. TSM-109 series parts provide cross-manufacturer equivalence. These parts maintain all critical interface parameters while offering extended operating temperature range (-55°C ~ 125°C versus -40°C ~ 105°C) and alternative insulation material (Liquid Crystal Polymer versus Polyamide). Samtec parts are available in multiple packaging configurations: Tube, Tape & Reel with Pick and Place features, and with varied contact finishes (tin or gold).

Selection between Harwin and Samtec substitutes depends on packaging requirements, contact finish specifications, and operating temperature envelope. Tape & Reel packaging with Pick and Place features is available from Samtec for automated assembly applications.

Frequently Asked Questions (FAQ)

Q: Can M20-8770942 directly replace M20-8770946?

A: Yes. M20-8770942 is the active equivalent from Harwin Inc. with identical mechanical and electrical interface specifications. The primary difference is contact finish (gold plating on M20-8770942 versus tin on M20-8770946).

Q: What are the key differences between Harwin and Samtec substitutes?

A: Harwin M20-8770942 maintains the original insulation material (Polyamide PA6T) and operating temperature range (-40°C ~ 105°C). Samtec TSM-109 series parts use Liquid Crystal Polymer insulation and support extended operating temperature (-55°C ~ 125°C). Both maintain identical pitch, position count, and mechanical interface.

Q: Which Samtec part should I select for automated assembly?

A: Samtec parts designated with "-P-TR" suffix include Pick and Place features and are supplied in Tape & Reel packaging. Options include TSM-109-01-L-SV-P-TR, TSM-109-01-S-SV-P-TR, and TSM-109-01-T-SV-P-TR.

Q: Does contact finish affect electrical performance?

A: Contact finish (tin or gold) does not affect the fundamental electrical interface. Gold-plated contacts (M20-8770942, Samtec gold variants) provide enhanced corrosion resistance. Tin-plated contacts (TSM-109-01-T-SV-P-TR, TSM-109-01-TL-SV-P-TR, TSM-109-01-TM-SV) are suitable for standard applications.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original M20-8770946 compliance status.

Q: What packaging options are available?

A: Harwin M20-8770942 is supplied in Bulk packaging. Samtec parts are available in Tube packaging (TSM-109-01-L-SV, TSM-109-01-SM-SV, TSM-109-01-TM-SV) or Tape & Reel packaging (TSM-109-01-L-SV-P-TR, TSM-109-01-S-SV-P-TR, TSM-109-01-S-SV-TR, TSM-109-01-T-SV-P-TR, TSM-109-01-TL-SV-P-TR).