TE Connectivity 281277-2 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 281277-2 is a rectangular connector header designed for through-hole mounting applications. This shrouded, 40-position male pin header operates at 0.100" (2.54mm) pitch and features a push-pull fastening mechanism suitable for board-to-cable/wire connections. The connector is classified as Active product status with 1094 units in current inventory. Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support alternative sourcing strategies while maintaining electrical and mechanical compatibility.

Substiute Parts

281277-2

TE Connectivity AMP ConnectorsIn Stock: 1140281277-2 Datasheet

Current PartRFQ

75869-107LF

Amphenol ICC (FCI)In Stock: 135675869-107LF Datasheet

SimilarRFQ

75869-318LF

Amphenol ICC (FCI)In Stock: 107175869-318LF Datasheet

SimilarRFQ

TST-120-01-G-D

Samtec Inc.In Stock: 1509TST-120-01-G-D Datasheet

SimilarRFQ

TST-120-01-L-D

Samtec Inc.In Stock: 3284TST-120-01-L-D Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TE Connectivity 281277-2 are qualified based on the following critical parameters that determine functional and mechanical interchangeability:

Primary Matching Criteria:

• Connector Type: Header
• Contact Type: Male Pin
• Number of Positions: 40
• Number of Rows: 2
• Pitch - Mating: 0.100" (2.54mm)
• Row Spacing - Mating: 0.100" (2.54mm)
• Mounting Type: Through Hole
• Termination: Solder
• Shrouding: Shrouded - 4 Wall
• Fastening Type: Push-Pull
• Contact Shape: Square
• Style: Board to Cable/Wire
• Features: Keying Slot
• Moisture Sensitivity Level: 1 (Unlimited)

All four substitute parts meet these primary criteria. Secondary parameters including contact material, contact finish specifications, insulation material composition, and dimensional tolerances vary among substitutes and are documented in the Parameter Comparison table for engineering evaluation.

Parameter Comparison

Engineering Selection Recommendations

TE Connectivity 281277-2 (Primary Part) The original TE Connectivity 281277-2 maintains Active product status with established supply availability. This part is suitable for applications where AMP-Latch series compatibility is required or where existing designs are qualified to this specific connector.

Amphenol ICC 75869-107LF This substitute offers RoHS Compliant and REACH Affected status. The Quickie™ series provides enhanced contact finish thickness on mating surfaces (30.0µin versus 15.0µin on the primary part), which may provide improved contact durability in high-cycle mating applications. Packaged in tube format with 1326 units in inventory.

Amphenol ICC 75869-318LF This substitute also offers RoHS Compliant and REACH Affected status within the Quickie™ series. Contact finish specifications match the primary part (15.0µin mating thickness). Packaged in tube format with 1041 units in inventory. Selection between 75869-107LF and 75869-318LF depends on mating contact finish thickness requirements.

Samtec TST-120-01-G-D This substitute provides ROHS3 Compliant and REACH Unaffected status. The Flex Stack TST series includes specified operating temperature range (-55°C ~ 125°C) and current rating (3.4A per Contact) not provided for the primary part. Contact finish on both mating and post surfaces is gold. Packaged in bulk format with 1456 units in inventory.

Samtec TST-120-01-L-D This substitute provides ROHS3 Compliant and REACH Unaffected status within the Flex Stack TST series. Operating temperature and current rating specifications match TST-120-01-G-D. Contact finish differs on post surface (tin versus gold on TST-120-01-G-D). Packaged in bulk format with highest inventory availability at 3180 units.

Selection among substitutes should prioritize compliance requirements (RoHS/REACH status), contact finish specifications, and packaging format based on application requirements and supply chain constraints.

Frequently Asked Questions (FAQ)

Q: What are the critical parameters that determine if a part can substitute for the TE Connectivity 281277-2?

A: The following parameters must match exactly: 40-position, 2-row configuration; 0.100" (2.54mm) pitch and row spacing; through-hole mounting; solder termination; shrouded 4-wall design; push-pull fastening; square contact shape; board-to-cable/wire style; keying slot feature; and MSL 1 rating. All listed substitutes meet these criteria.

Q: How do the Amphenol ICC Quickie™ series parts differ from the TE Connectivity AMP-Latch series?

A: Both series maintain identical mechanical and electrical interface parameters. Differences include contact material (Phosphor Bronze versus Brass), insulation material composition (Thermoplastic versus PBT), insulation height (0.377" versus 0.402"), and compliance certifications (RoHS Compliant and REACH Affected versus Not applicable/Vendor Undefined). The Amphenol ICC 75869-107LF provides increased mating contact finish thickness (30.0µin).

Q: What is the significance of the contact finish thickness variations among substitutes?

A: Contact finish thickness affects contact durability and wear resistance during mating cycles. The Amphenol ICC 75869-107LF provides 30.0µin mating finish thickness, while 75869-318LF, TST-120-01-G-D, and TST-120-01-L-D provide 15.0µin, 10.0µin, and 10.0µin respectively. Applications requiring high-cycle mating may benefit from increased finish thickness.

Q: How do the Samtec TST-120 series parts differ from the Amphenol ICC Quickie™ series?

A: The Samtec TST-120 series provides specified operating temperature range (-55°C ~ 125°C) and current rating (3.4A per Contact) not documented for other substitutes. Samtec parts feature phosphor bronze contacts with gold mating finish and PBT insulation. TST-120-01-G-D uses gold post finish while TST-120-01-L-D uses tin post finish. Samtec parts are packaged in bulk format.

Q: What packaging formats are available among the substitutes?

A: TE Connectivity 281277-2 packaging is not specified. Amphenol ICC parts (75869-107LF and 75869-318LF) are packaged in tube format. Samtec parts (TST-120-01-G-D and TST-120-01-L-D) are packaged in bulk format. Packaging selection impacts handling, storage, and integration into assembly processes.

Q: Are all substitutes RoHS compliant?

A: The TE Connectivity 281277-2 has RoHS status listed as Not applicable. Amphenol ICC substitutes (75869-107LF and 75869-318LF) are RoHS Compliant. Samtec substitutes (TST-120-01-G-D and TST-120-01-L-D) are ROHS3 Compliant. Applications requiring RoHS compliance should select Amphenol ICC or Samtec alternatives.

Q: What is the difference between REACH Affected and REACH Unaffected status?

A: REACH Affected status indicates the part may contain substances subject to REACH regulations. REACH Unaffected status indicates the part does not contain such substances. Amphenol ICC substitutes are REACH Affected. Samtec substitutes are REACH Unaffected. Applications subject to REACH restrictions should select Samtec alternatives.

Q: Can the TST-120-01-G-D and TST-120-01-L-D be used interchangeably?

A: Both parts are mechanically and electrically compatible with identical pitch, position count, mounting type, and operating specifications. The primary difference is post contact finish: TST-120-01-G-D uses gold finish while TST-120-01-L-D uses tin finish. Selection depends on soldering process compatibility and post-solder reliability requirements.

Q: What inventory levels are available for each substitute?

A: TE Connectivity 281277-2: 1094 units; Amphenol ICC 75869-107LF: 1326 units; Amphenol ICC 75869-318LF: 1041 units; Samtec TST-120-01-G-D: 1456 units; Samtec TST-120-01-L-D: 3180 units. Samtec TST-120-01-L-D offers the highest inventory availability.