Phoenix Contact 1776757 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1776757 is an 8-position terminal block header with male pins, shrouded on 4 sides, designed for 90° right-angle through-hole mounting. This component operates at 12A (IEC) / 15A (UL) and 400V (IEC) / 300V (UL), making it suitable for industrial control and power distribution applications. The part is active in production with 957 units currently in stock. Equivalent parts are identified to support design flexibility, supply chain continuity, and application-specific requirements where mechanical or electrical parameters align within acceptable tolerances.

Key Parameters

Parameter	Value
Number of Positions	8
Pitch	0.197" (5.00mm)
Header Orientation	90°, Right Angle
Type	Header, Male Pins, Shrouded (4 Side)
Mounting Type	Through Hole
Termination Style	Solder
Current Rating (UL)	15A
Voltage Rating (UL)	300V
Material Flammability	UL94 V-0
Contact Tail Length	0.138" (4.60mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

The TE Connectivity AMP Connectors 796644-8 qualifies as a direct substitute for the Phoenix Contact 1776757 based on the following critical parameters:

Position Count & Pitch: Both parts feature 8 positions at 0.197" (5.00mm) pitch, ensuring PCB footprint compatibility
Orientation & Mounting: Both are 90° right-angle through-hole headers with identical mechanical orientation
Pin Configuration: Both are male pin headers with 4-side shrouding, maintaining the same connector interface
Electrical Ratings: Both meet UL 15A / 300V specifications, satisfying standard industrial power distribution requirements
Termination: Both use solder termination for permanent PCB attachment
Compliance: Both are ROHS3 compliant and carry UL94 V-0 flammability ratings
Contact Geometry: Both have 0.138" (4.60mm) contact tail length, ensuring consistent solder joint depth and PCB penetration

The substitute part differs in housing material (Polyamide PA66 vs. Polybutylene Terephthalate PBT) and insulation height (0.329" vs. 0.339"), which do not affect functional compatibility in standard applications.

Parameter Comparison

Parameter	Phoenix Contact 1776757	TE Connectivity 796644-8	Compatibility
Manufacturer Part Number	1776757	796644-8	Different manufacturers
Number of Positions	8	8	Match
Pitch	0.197" (5.00mm)	0.197" (5.00mm)	Match
Header Orientation	90°, Right Angle	90°, Right Angle	Match
Type	Header, Male Pins, Shrouded (4 Side)	Header, Male Pins, Shrouded (4 Side)	Match
Mounting Type	Through Hole	Through Hole	Match
Termination Style	Solder	Solder	Match
Current Rating (UL)	15A	15A	Match
Voltage Rating (UL)	300V	300V	Match
Contact Mating Finish	Tin	Tin	Match
Material Flammability Rating	UL94 V-0	UL94 V-0	Match
Contact Tail Length	0.138" (4.60mm)	0.138" (4.60mm)	Match
Housing Material	Polybutylene Terephthalate (PBT)	Polyamide (PA66), Nylon 6/6	Different, both UL94 V-0
Insulation Height	0.339" (8.61mm)	0.329" (8.36mm)	Minor variation (0.010")
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
Product Status	Active	Active	Both in production

Engineering Selection Recommendations

Both the Phoenix Contact 1776757 and TE Connectivity 796644-8 are active production components with equivalent electrical and mechanical specifications. Selection between these parts should be based on:

Supply Availability: Phoenix Contact 1776757 has 957 units in stock; TE Connectivity 796644-8 has 1332 units in stock
Compliance Requirements: Both parts meet ROHS3 and UL94 V-0 standards, suitable for regulated industrial applications
Housing Material Preference: PBT (Phoenix Contact) offers slightly higher thermal stability; PA66 (TE Connectivity) provides equivalent performance in standard operating ranges
Mechanical Tolerance: The 0.010" insulation height difference is within typical PCB design tolerances and does not affect functional compatibility
Cost and Lead Time: Consult supplier pricing and delivery schedules for project-specific requirements

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 796644-8 be used as a direct replacement for the Phoenix Contact 1776757 on existing PCBs?

A: Yes. Both parts have identical pitch (5.00mm), position count (8), orientation (90° right angle), and contact tail length (4.60mm). PCB footprints are compatible without modification.

Q: Are there electrical differences between these two parts?

A: Both parts meet UL 15A / 300V specifications. The Phoenix Contact part specifies IEC 12A / 400V, while the TE Connectivity part does not list IEC ratings. For IEC-regulated applications, verify compliance with your regional standards.

Q: Does the housing material difference affect performance?

A: Both materials (PBT and PA66) carry UL94 V-0 flammability ratings and are suitable for industrial control applications. Material selection depends on specific thermal and chemical exposure requirements in your application environment.

Q: What is the significance of the 0.010" insulation height variation?

A: This minor difference (0.339" vs. 0.329") falls within standard PCB design tolerances and does not affect mechanical fit or electrical performance in typical applications.

Q: Are both parts RoHS compliant?

A: Yes. Both the Phoenix Contact 1776757 and TE Connectivity 796644-8 are ROHS3 compliant, meeting EU and equivalent regulatory requirements.

Q: Which part should I select for new designs?

A: Both parts are suitable for new designs. Consider supply chain factors, cost, and material preferences. Verify availability with your component supplier before finalizing design specifications.

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