TE Connectivity 4-1971776-3 Rectangular Connector Plug Housing Equivalent & Substitute Parts

Part Overview

The TE Connectivity 4-1971776-3 is a 6-position rectangular connector plug housing from the Power Triple Lock series. This component is a yellow polybutylene terephthalate (PBT) glass-filled housing designed for crimp termination with female blade socket contacts in a 2-row configuration at 6.00mm pitch. The part is Active in product status and RoHS Compliant.

Equivalent and substitute parts are necessary when specific color requirements differ from design specifications, when alternative material compositions are required for thermal or environmental applications, or when inventory availability necessitates selection from the same product family with identical electrical and mechanical characteristics.

Key Parameters

Parameter	Value
Manufacturer Part Number	4-1971776-3
Manufacturer	TE Connectivity AMP Connectors
Category	Rectangular Connectors
Number of Positions	6
Pitch	0.236" (6.00mm)
Number of Rows	2
Row Spacing	0.319" (8.10mm)
Connector Type	Plug
Contact Type	Female Blade Socket
Mounting Type	Free Hanging (In-Line)
Contact Termination	Crimp
Fastening Type	Latch Holder
Operating Temperature Range	-55°C ~ 150°C
Moisture Sensitivity Level (MSL)	1 (Unlimited)
RoHS Status	RoHS Compliant
Base Product Number	1971776

Substitute Part Grouping Explanation

Substitution of the 4-1971776-3 connector housing is permissible among parts sharing the identical base product number 1971776 and maintaining the following critical parameters:

Mandatory Matching Parameters:

Number of Positions: 6
Pitch: 0.236" (6.00mm)
Number of Rows: 2
Row Spacing: 0.319" (8.10mm)
Connector Type: Plug
Contact Type: Female Blade Socket
Mounting Type: Free Hanging (In-Line)
Contact Termination: Crimp
Fastening Type: Latch Holder
Operating Temperature Range: -55°C ~ 150°C
Moisture Sensitivity Level: 1 (Unlimited)

Variable Parameters Permitting Substitution:

Housing Color (Yellow, Natural, Blue, Gray, Red)
Insulation Material (Polybutylene Terephthalate PBT Glass Filled or Polyamide PA Nylon)
Series Designation (Power Triple Lock Standard or Power Triple Lock High Temp)
RoHS Status (RoHS Compliant or ROHS3 Compliant)

All substitute parts listed maintain full electrical and mechanical compatibility with the main part 4-1971776-3 within the specified operating parameters.

Parameter Comparison

Parameter	4-1971776-3 (Yellow)	1-1971776-3 (Natural)	3-1971776-3 (Blue)	5-1971776-3 (Gray)	6-1971776-3 (Red)
Manufacturer Part Number	4-1971776-3	1-1971776-3	3-1971776-3	5-1971776-3	6-1971776-3
Color	Yellow	Natural	Blue	Gray	Red
Number of Positions	6	6	6	6	6
Pitch	0.236" (6.00mm)	0.236" (6.00mm)	0.236" (6.00mm)	0.236" (6.00mm)	0.236" (6.00mm)
Number of Rows	2	2	2	2	2
Row Spacing	0.319" (8.10mm)	0.319" (8.10mm)	0.319" (8.10mm)	0.319" (8.10mm)	0.319" (8.10mm)
Connector Type	Plug	Plug	Plug	Plug	Plug
Contact Type	Female Blade Socket	Female Blade Socket	Female Blade Socket	Female Blade Socket	Female Blade Socket
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)
Contact Termination	Crimp	Crimp	Crimp	Crimp	Crimp
Fastening Type	Latch Holder	Latch Holder	Latch Holder	Latch Holder	Latch Holder
Insulation Material	PBT Glass Filled	PBT Glass Filled	PBT Glass Filled	PA Nylon	PA Nylon
Operating Temperature	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Series	Power Triple Lock, Standard	Power Triple Lock, Standard	Power Triple Lock, Standard	Power Triple Lock, High Temp	Power Triple Lock, High Temp
RoHS Status	RoHS Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	RoHS Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts maintain Active product status and full compliance with RoHS regulations. Selection among the 4-1971776-3 and its equivalents should be based on the following criteria:

Color-Based Selection: The 4-1971776-3 (Yellow), 1-1971776-3 (Natural), and 3-1971776-3 (Blue) are functionally identical with PBT glass-filled insulation material and Power Triple Lock Standard series designation. Color selection is determined by application-specific circuit identification or assembly requirements.

Material and Temperature Considerations: The 5-1971776-3 (Gray) and 6-1971776-3 (Red) employ polyamide (PA) nylon insulation and are designated as Power Triple Lock High Temp variants. These parts maintain the same operating temperature range but offer alternative material properties. Selection of PA nylon variants is appropriate when material compatibility with specific assembly processes or environmental exposure conditions is required.

Compliance Status: The 5-1971776-3 carries ROHS3 Compliant certification, while all other variants are RoHS Compliant. Both certifications satisfy current regulatory requirements. Selection should align with customer or end-use market compliance specifications.

Inventory Availability: Current stock levels vary across the product family. The 5-1971776-3 (Gray) maintains the highest inventory at 5696 pieces, followed by 3-1971776-3 (Blue) at 3196 pieces. The 4-1971776-3 (Yellow) and 6-1971776-3 (Red) have lower availability at 754 and 852 pieces respectively.

Frequently Asked Questions (FAQ)

Q: Can the 4-1971776-3 be directly replaced with 1-1971776-3, 3-1971776-3, 5-1971776-3, or 6-1971776-3?

A: Yes. All listed parts share identical electrical and mechanical specifications including position count, pitch, row configuration, contact type, termination method, and operating temperature range. Substitution is permissible based on the matching mandatory parameters. Color and material differences do not affect electrical or mechanical compatibility.

Q: What is the difference between the PBT glass-filled and PA nylon insulation materials?

A: The 4-1971776-3, 1-1971776-3, and 3-1971776-3 utilize polybutylene terephthalate (PBT) glass-filled insulation. The 5-1971776-3 and 6-1971776-3 utilize polyamide (PA) nylon insulation. Both materials support the identical -55°C to 150°C operating temperature range. Material selection is determined by specific application requirements, assembly process compatibility, and environmental exposure conditions.

Q: Are all substitute parts RoHS compliant?

A: Yes. All parts listed are either RoHS Compliant or ROHS3 Compliant. The 5-1971776-3 carries ROHS3 Compliant certification. All other variants carry RoHS Compliant certification. Both certifications satisfy current regulatory requirements for restricted substances.

Q: Does housing color affect electrical performance?

A: No. Housing color is a visual identification feature only and does not affect electrical performance, impedance, signal integrity, or mechanical function. Color selection is determined by circuit identification standards, assembly documentation, or customer specifications.

Q: What is the significance of the Power Triple Lock series designation?

A: The Power Triple Lock series indicates the connector family and locking mechanism type. Standard and High Temp designations refer to the series variant. All parts maintain identical electrical and mechanical specifications within the -55°C to 150°C operating range regardless of series designation.

Q: Are contacts included with these connector housings?

A: No. All parts in this product family are housings only. Female blade socket contacts must be procured separately and installed through crimp termination.

Q: What is Moisture Sensitivity Level (MSL) 1?

A: MSL 1 indicates unlimited shelf life with no moisture sensitivity restrictions. These connector housings do not require special moisture control during storage or handling.

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