TE Connectivity AMP Connectors 794550-4 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 794550-4 is a 4-position rectangular connector plug housing with 0.165" (4.20mm) pitch, designed for panel mount snap-in applications with crimp contact termination. This part operates within the AMP-DUAC series and is classified as obsolete. Due to its obsolete product status, equivalent and substitute parts from active product lines are necessary for ongoing procurement and system maintenance. Substitute parts maintain the same electrical and mechanical specifications while offering active availability and compliance certifications.

Key Parameters

Parameter	Specification
Connector Type	Plug
Contact Type	Male Pin
Number of Positions	4
Pitch	0.165" (4.20mm)
Number of Rows	2
Row Spacing	0.165" (4.20mm)
Mounting Type	Panel Mount, Snap-In
Contact Termination	Crimp
Fastening Type	Locking Ramp
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 794550-4 is determined by strict equivalence across the following critical parameters: connector type (plug), contact type (male pin), number of positions (4), pitch (0.165"/4.20mm), number of rows (2), row spacing (0.165"/4.20mm), mounting type (panel mount, snap-in), contact termination (crimp), and fastening type (locking ramp). All identified substitute parts maintain these specifications without deviation.

Substitute parts are grouped into two categories:

TE Connectivity Active Equivalents: Parts 794953-4 and 1969599-4 remain within the TE Connectivity product ecosystem, offering direct functional replacement with active product status and enhanced compliance certifications (RoHS3).

Cross-Manufacturer Equivalents: Parts 0039012046, 0469930410, and 1727670004 from Molex provide parametric equivalence across all critical mechanical and electrical specifications, with variations limited to color and series designation. These parts are sourced from different manufacturers but satisfy identical functional requirements.

Parameter Comparison

Parameter	794550-4 (Main)	794953-4	1969599-4	0039012046	0469930410	1727670004
Manufacturer	TE Connectivity	TE Connectivity	TE Connectivity	Molex	Molex	Molex
Connector Type	Plug	Plug	Plug	Plug	Plug	Plug
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	4	4	4	4	4	4
Pitch	0.165" (4.20mm)	0.165" (4.20mm)	0.165" (4.20mm)	0.165" (4.20mm)	0.165" (4.20mm)	0.165" (4.20mm)
Number of Rows	2	2	2	2	2	2
Row Spacing	0.165" (4.20mm)	0.165" (4.20mm)	0.165" (4.20mm)	0.165" (4.20mm)	0.165" (4.20mm)	0.165" (4.20mm)
Mounting Type	Panel Mount, Snap-In	Panel Mount, Snap-In	Panel Mount, Snap-In	Panel Mount, Snap-In	Panel Mount, Snap-In	Panel Mount, Snap-In
Contact Termination	Crimp	Crimp	Crimp	Crimp	Crimp	Crimp
Fastening Type	Locking Ramp	Locking Ramp	Locking Ramp	Locking Ramp	Locking Ramp	Locking Ramp
Color	Natural	Natural	Natural	Ivory	Black	Black
Operating Temperature	Not Specified	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Not Specified	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: Part 1969599-4 is the preferred substitute for the obsolete 794550-4. This TE Connectivity part maintains manufacturer continuity, carries active product status, and holds ROHS3 compliance certification. With 6373 units in stock, it provides superior availability compared to alternative options.

Secondary Recommendation: Part 794953-4 serves as an alternative TE Connectivity substitute within the VAL-U-LOK series. This part maintains active status and RoHS compliance, with 1088 units available. Selection between 794953-4 and 1969599-4 depends on series compatibility requirements within the target application.

Cross-Manufacturer Alternatives: Parts 0039012046 (Molex Mini-Fit Jr 5559), 0469930410 (Molex Mini-Fit Jr 46993), and 1727670004 (Molex Mini-Fit TPA2 172767) provide parametric equivalence with active status and ROHS3 compliance. These parts differ in color specification and series designation but maintain identical electrical and mechanical interface characteristics. Selection of cross-manufacturer parts requires confirmation that the application does not impose series-specific constraints.

All substitute parts maintain MSL 1 (Unlimited) rating, matching the original specification. Operating temperature range (-40°C to 105°C) is specified for all active substitutes, providing enhanced environmental documentation compared to the obsolete original part.

Frequently Asked Questions (FAQ)

Q: What makes these parts functionally equivalent to the 794550-4?

A: All substitute parts maintain identical specifications across critical parameters: 4-position plug housing, male pin contacts, 0.165" (4.20mm) pitch, 2-row configuration with 0.165" row spacing, panel mount snap-in mounting, crimp termination, and locking ramp fastening. These parameters define the mechanical and electrical interface, ensuring direct functional compatibility.

Q: Can I substitute the 794550-4 with a Molex part?

A: Yes. Parts 0039012046, 0469930410, and 1727670004 from Molex maintain all critical electrical and mechanical specifications. The primary differences are manufacturer identity, color, and series designation. Cross-manufacturer substitution is valid when the application does not impose series-specific constraints or color requirements.

Q: What is the difference between 794953-4 and 1969599-4?

A: Both are TE Connectivity active substitutes with identical electrical and mechanical specifications. The primary differences are series designation (VAL-U-LOK for both) and insulation material specification (Polyamide PA/Nylon for 794953-4 versus Polyamide PA66/Nylon 6/6 for 1969599-4). Part 1969599-4 carries ROHS3 certification and offers higher inventory availability (6373 units versus 1088 units).

Q: Why is the 794550-4 listed as obsolete?

A: The 794550-4 is classified as obsolete within the AMP-DUAC series. Active equivalent parts are available from both TE Connectivity (794953-4, 1969599-4) and Molex (0039012046, 0469930410, 1727670004), providing direct functional replacement with enhanced compliance certifications and ongoing availability.

Q: Does color variation affect compatibility?

A: Color variation (natural, ivory, or black) does not affect electrical or mechanical compatibility. Color selection depends on application-specific requirements or system integration standards. All substitute parts maintain identical interface specifications regardless of color designation.

Q: Are contacts included with these connector housings?

A: No. All parts listed, including the main part 794550-4 and all substitutes, are connector housings only. Contacts must be procured separately and are not included with the housing.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 (Unlimited) indicates that the component has unlimited shelf life and does not require special moisture control during storage or handling. This specification is consistent across the main part and all substitutes, ensuring equivalent storage and handling requirements.

Q: Can I use these parts interchangeably in existing designs?

A: Yes, for applications where the original 794550-4 was specified. All substitute parts maintain the same mechanical footprint, electrical interface, and functional characteristics. However, if the original design specifies a particular series (AMP-DUAC, VAL-U-LOK, Mini-Fit Jr, or Mini-Fit TPA2), design review may be necessary to confirm series compatibility.

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