ESTM03400 Equivalent & Substitute Parts

Part Overview

The ESTM03400 is a 3-position wire-to-board terminal block manufactured by Amphenol PCD, designed for horizontal PCB mounting with side entry wire connections. This component is rated for 24 A at 300 V and accommodates wire gauges from 11-30 AWG using screw-based rising cage clamp termination. The part is currently active in production with RoHS compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical ratings, mechanical compatibility, and functional specifications align within the allowed parameter tolerances for this terminal block category.

Substiute Parts

ESTM03400

Amphenol PCDIn Stock: 917ESTM03400 Datasheet

Current PartRFQ

282861-3

TE Connectivity AMP ConnectorsIn Stock: 1910282861-3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ESTM03400 is determined by strict alignment of the following critical parameters:

• Electrical Compatibility: Current rating of 24 A and voltage rating of 300 V are mandatory
• Mechanical Compatibility: 3 positions per level, 0.300" (7.62mm) pitch, horizontal with board orientation, and through-hole mounting
• Termination Method: Screw-based rising cage clamp wire termination
• Housing Material: Polyamide (PA66) or equivalent nylon construction
• Wire Gauge Acceptance: Minimum 11 AWG support required; 12-30 AWG is acceptable as a subset

The substitute part 282861-3 meets all mandatory electrical and mechanical criteria. Variations in contact material composition (brass vs. copper alloy), plating specifications, screw torque values, and color do not affect functional substitutability within the scope of this terminal block application.

Parameter Comparison

Engineering Selection Recommendations

Both the ESTM03400 and 282861-3 are active production components with current regulatory compliance. The ESTM03400 maintains RoHS compliance, while the 282861-3 meets ROHS3 compliance standards. Selection between these parts should be based on:

• Availability: The 282861-3 has higher current inventory (1814 pcs vs. 902 pcs)
• Wire Gauge Requirements: If applications require 11 AWG wire support, the ESTM03400 is the only option. For 12-30 AWG applications, both parts are functionally equivalent
• Packaging Format: ESTM03400 is supplied in tray packaging; 282861-3 is supplied in bulk packaging
• Regulatory Context: Both parts satisfy RoHS requirements; ROHS3 compliance of the 282861-3 provides additional regulatory alignment for certain markets

Frequently Asked Questions (FAQ)

Q: Can 282861-3 replace ESTM03400 in all applications?

A: The 282861-3 is functionally equivalent for applications using wire gauges 12-30 AWG. If your design requires 11 AWG wire support, the ESTM03400 is the appropriate choice.

Q: Are the screw torque differences significant?

A: The ESTM03400 specifies 0.5 Nm (4.4 Lb-In) torque, while 282861-3 specifies 0.79 Nm (7.0 Lb-In). Both values are within acceptable ranges for screw-based cage clamp termination and do not affect electrical or mechanical compatibility.

Q: Does the color difference (black vs. green) affect performance?

A: Color is a cosmetic specification and does not impact electrical performance, current capacity, voltage rating, or mechanical function.

Q: What is the impact of different contact materials?

A: ESTM03400 uses copper alloy with tin plating; 282861-3 uses brass with tin plating. Both material systems provide equivalent electrical conductivity and corrosion resistance for this application class.

Q: Are both parts suitable for the same PCB footprint?

A: Yes. Both parts share identical pitch (7.62mm), position count (3), and through-hole mounting specifications, ensuring direct PCB footprint compatibility.

Q: Which part should I specify for new designs?

A: Selection depends on wire gauge requirements and supply chain considerations. For 12-30 AWG applications, either part is acceptable. Verify availability and lead times with your supplier for your specific procurement timeline.