TE Connectivity 282827-4 Terminal Block Header Equivalent & Substitute Parts

Part Overview

The TE Connectivity 282827-4 is a 4-position terminal block header with male pins, shrouded on two sides, designed for vertical through-hole mounting with 0.394" (10.00mm) pitch spacing. This component is part of the Buchanan series and operates at 24 A (UL) and 600 V (UL) with an operating temperature range of -40°C to 110°C.

The 282827-4 carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production and repair requirements for systems utilizing this terminal block header.

Substiute Parts

282827-4

TE Connectivity AMP ConnectorsIn Stock: 964282827-4 Datasheet

Current PartRFQ

1776156-4

TE Connectivity AMP ConnectorsIn Stock: 9101776156-4 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 282827-4 terminal block header is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Parameters:

• Current rating: 24 A (UL)
• Voltage rating: 600 V (UL)
• Contact material: Copper Alloy
• Contact mating finish: Tin

Mechanical Compatibility Parameters:

• Number of positions: 4
• Pitch spacing: 0.394" (10.00mm)
• Header orientation: Vertical
• Type: Header, Male Pins, Shrouded (2 Side)
• Mounting type: Through Hole
• Termination style: Solder
• Contact tail length: 0.138" (3.50mm)

Environmental & Compliance Parameters:

• Operating temperature range: -40°C ~ 110°C
• Material flammability rating: UL94 V-0
• RoHS compliance status
• Moisture sensitivity level: 1 (Unlimited)

Substitute parts must match all parameters listed above. Variations in housing color, insulation height, or product status (active versus obsolete) do not affect functional substitution when all electrical and mechanical parameters remain equivalent.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity 1776156-4 terminal block header is a direct functional substitute for the obsolete 282827-4 model. Both components share identical electrical ratings (24 A at 600 V), mechanical configuration (4-position, 10mm pitch, vertical through-hole), and environmental specifications (-40°C to 110°C operating range).

Compliance Status: The 1776156-4 carries an active product status with RoHS compliance certification, whereas the 282827-4 is obsolete. For new designs and ongoing production, the 1776156-4 is the appropriate selection to ensure long-term component availability and regulatory compliance.

Physical Differences: The insulation height differs between the two parts (0.472" for 282827-4 versus 0.329" for 1776156-4), and housing color varies (green versus black). These differences do not affect electrical or mechanical compatibility in applications where the terminal block header functions as a solder-mounted connector interface. PCB layout and mechanical clearance must be verified if the reduced insulation height of the 1776156-4 impacts board-level integration.

Selection Criteria: For replacement of obsolete 282827-4 units, the 1776156-4 is the recommended equivalent. For new designs, the 1776156-4 should be specified to ensure component availability and compliance with current RoHS standards.

Frequently Asked Questions (FAQ)

Q: Can the 1776156-4 be used as a direct replacement for the 282827-4 in existing designs?

A: Yes. The 1776156-4 matches all critical electrical and mechanical parameters of the 282827-4, including current rating (24 A), voltage rating (600 V), position count (4), pitch spacing (10mm), and mounting type (through-hole solder). The primary difference is the reduced insulation height (0.329" versus 0.472"), which must be evaluated for PCB layout compatibility.

Q: What is the significance of the insulation height difference between these two parts?

A: Insulation height affects the vertical clearance between the PCB surface and the top of the terminal block header. The 1776156-4 has a lower insulation height (0.329") compared to the 282827-4 (0.472"). This difference may impact board-level spacing and component placement. Verify that the reduced height does not interfere with adjacent components or enclosure constraints.

Q: Does the color difference (green versus black) affect functionality?

A: No. Housing color is a cosmetic attribute and does not affect electrical performance, current capacity, voltage rating, or mechanical compatibility. Both parts use identical contact materials (copper alloy with tin finish) and housing materials (polyamide/nylon).

Q: Are both parts RoHS compliant?

A: Yes. The 282827-4 is ROHS3 compliant, and the 1776156-4 is RoHS compliant. Both meet environmental and regulatory requirements for lead-free manufacturing and hazardous substance restrictions.

Q: What is the operating temperature range for both parts?

A: Both the 282827-4 and 1776156-4 operate across the same temperature range: -40°C to 110°C. This ensures thermal compatibility in applications requiring extended temperature performance.

Q: Why is the 282827-4 listed as obsolete?

A: Product obsolescence reflects manufacturer discontinuation decisions. The 1776156-4 represents the active equivalent in the Buchanan series, ensuring ongoing availability and support for new and replacement applications.

Q: Are there any differences in contact tail length or solder pad requirements?

A: No. Both parts have identical contact tail length (0.138" or 3.50mm), ensuring compatible PCB footprints and solder joint geometry. No modifications to PCB design are required for this parameter.

Q: What is the current and voltage rating for both terminal block headers?

A: Both the 282827-4 and 1776156-4 are rated for 24 A (UL) and 600 V (UL), providing equivalent electrical capacity for power distribution and signal routing applications.