TE Connectivity AMP Connectors 282921-3 Terminal Block Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 282921-3 is a 3 Position Wire to Board Terminal Block with horizontal board mounting and 0.200" (5.08mm) pitch spacing. This component features screw-rising cage clamp wire termination and through-hole PCB mounting. The part is classified as obsolete, making identification of equivalent substitute components necessary for ongoing design support and procurement continuity. The Buchanan series terminal block operates within a 24 A current rating and 300 V voltage specification across an operating temperature range of -40°C to 105°C.

Substiute Parts

282921-3

TE Connectivity AMP ConnectorsIn Stock: 1052282921-3 Datasheet

Current PartRFQ

691249510003

Würth ElektronikIn Stock: 1109691249510003 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 282921-3 terminal block is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Positions per level: 3
• Pitch spacing: 0.200" (5.08mm)
• Mating orientation: Horizontal with board
• Mounting type: Through hole
• Wire termination method: Screw-rising cage clamp
• Screw thread specification: M3
• Housing material: Polyamide (PA66), Nylon 6/6
• Wire gauge acceptance: 12-30 AWG
• Voltage rating: 300 V minimum

Allowable Parameter Variations:

• Current rating: Substitute must meet or exceed 20 A minimum
• Operating temperature range: Substitute must support minimum -30°C to 120°C
• Contact and clamp material composition: Variations permitted provided electrical performance is maintained
• Interlocking feature configuration: Front, side, or rear interlocking acceptable
• Torque specification: Variations permitted within M3 screw capability range

The Würth Elektronik 691249510003 satisfies all critical matching parameters and allowable variations, qualifying it as a direct substitute for the obsolete TE Connectivity 282921-3.

Parameter Comparison

Engineering Selection Recommendations

TE Connectivity 282921-3 (Obsolete): The original part is classified as obsolete and no longer in active production. While 1012 pieces remain in current inventory, this part number should not be selected for new designs or long-term procurement strategies. The part maintains ROHS3 compliance and REACH affected status.

Würth Elektronik 691249510003 (Active): The Würth Elektronik 691249510003 is the qualified substitute for new designs and ongoing production requirements. This part is active in production with 1074 pieces currently in inventory. It maintains ROHS3 compliance and is REACH unaffected, providing regulatory advantage for international applications. The substitute operates across an extended temperature range (-30°C to 120°C) compared to the original part, offering improved thermal performance margin.

Current Rating Consideration: The substitute part carries a 20 A current rating versus the original 24 A rating. Circuit designs operating at or above 20 A must be evaluated to confirm the substitute meets application requirements. Designs operating below 20 A are fully compatible.

Frequently Asked Questions (FAQ)

Q: Can the Würth Elektronik 691249510003 be used as a direct replacement for the TE Connectivity 282921-3 in existing assemblies?

A: The Würth Elektronik 691249510003 is mechanically and electrically compatible for applications where the circuit current does not exceed 20 A. The 0.200" (5.08mm) pitch, 3-position configuration, through-hole mounting, and M3 screw termination are identical. Verify that your application current requirement does not exceed the 20 A rating of the substitute part.

Q: What is the primary difference between these two terminal blocks?

A: The primary difference is the current rating: the original TE Connectivity part is rated for 24 A, while the Würth Elektronik substitute is rated for 20 A. Both parts share identical pitch spacing, position count, mounting type, wire gauge acceptance, and voltage rating. The substitute also provides an extended operating temperature range of -30°C to 120°C.

Q: Are there packaging differences between the original and substitute parts?

A: The TE Connectivity 282921-3 is supplied in standard packaging, while the Würth Elektronik 691249510003 is supplied in bulk packaging. Both parts are identical in form, fit, and function on the PCB.

Q: Do both parts meet the same regulatory compliance standards?

A: Both parts are ROHS3 compliant and carry the same ECCN (EAR99) and HTSUS (8536.90.4000) classifications. The Würth Elektronik substitute is REACH unaffected, whereas the original part is REACH affected. This provides regulatory advantage for the substitute in certain international markets.

Q: What is the screw torque specification for the substitute part?

A: The Würth Elektronik 691249510003 specifies a screw torque of 0.5 Nm (4.4 Lb-In) for the M3 screw, compared to 0.79 Nm (7.0 Lb-In) for the original TE Connectivity part. Both specifications are within acceptable ranges for M3 screw applications.

Q: Can I use the substitute part in applications requiring the full -40°C to 105°C temperature range of the original?

A: The Würth Elektronik substitute operates from -30°C to 120°C. Applications requiring operation below -30°C are not compatible with the substitute. Applications within the -30°C to 105°C range are fully compatible, with the substitute providing extended upper temperature capability.