Equivalent & Substitute Parts for TE Connectivity 3-1393222-8

Part Overview

The TE Connectivity Potter & Brumfield Relays model 3-1393222-8 is a general purpose relay with SPST-NO (1 Form A) contact configuration, rated for 8A at 18VDC coil voltage. This through-hole mounted relay is designed for applications requiring reliable switching of AC loads up to 400VAC maximum. The part is classified as obsolete, necessitating identification of equivalent substitute components for ongoing procurement and system maintenance. Substitute parts must maintain functional compatibility across critical electrical parameters including contact form, current rating, switching voltage, and operating temperature range.

Substiute Parts

3-1393222-8

TE Connectivity Potter & Brumfield RelaysIn Stock: 6303-1393222-8 Datasheet

Current PartRFQ

3-1393222-4

TE Connectivity Potter & Brumfield RelaysIn Stock: 9303-1393222-4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3-1393222-8 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Contact Form: SPST-NO (1 Form A)
• Contact Rating (Current): 8 A
• Switching Voltage: 400VAC - Max
• Mounting Type: Through Hole
• Termination Style: PC Pin
• Operating Temperature Range: -40°C ~ 85°C
• Coil Type: Non Latching

Acceptable Variation Parameters:

• Coil Voltage: Substitute parts may differ if system design permits alternative control voltages
• Contact Material: Silver Cadmium Oxide (AgCdO) and Gold (Au) versus Silver Tin Oxide (AgSnO) represent different contact metallurgies with equivalent switching performance for specified loads
• Seal Rating: Variations in sealing classification do not affect functional substitution when environmental requirements are met
• Coil Insulation: Class A classification maintained across substitutes

The substitute part 3-1393222-4 meets all mandatory matching parameters and is therefore classified as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The 3-1393222-4 is a direct functional substitute for the obsolete 3-1393222-8 based on the following engineering criteria:

Electrical Compatibility: Both parts maintain identical contact form (SPST-NO), current rating (8A), switching voltage (400VAC maximum), and timing characteristics (10ms operate, 5ms release). These parameters ensure seamless integration into existing circuit designs without modification.

Mechanical Compatibility: Identical through-hole mounting and PC pin termination enable direct PCB footprint compatibility. No layout redesign is required for component substitution.

Environmental Compliance: The substitute part 3-1393222-4 carries ROHS3 compliance certification, meeting current environmental regulatory requirements. Both parts operate across the identical temperature range (-40°C to 85°C) and share unlimited moisture sensitivity classification (MSL 1).

Product Status: The substitute part maintains active manufacturing status, ensuring long-term availability and supply chain continuity. The main part's obsolete classification makes the substitute the appropriate selection for new procurement and system maintenance.

Contact Material Difference: The substitute employs Silver Tin Oxide (AgSnO) contact material in place of the main part's Silver Cadmium Oxide (AgCdO) and Gold (Au) combination. Both metallurgies are rated for identical switching loads and voltage specifications, providing functionally equivalent performance for the specified 8A at 400VAC maximum application.

Frequently Asked Questions (FAQ)

Q: Can the 3-1393222-4 be used as a direct replacement for the 3-1393222-8 in existing designs?

A: Yes. Both parts share identical contact form (SPST-NO), current rating (8A), switching voltage (400VAC maximum), mounting type (through-hole), and termination style (PC pin). No circuit modification or PCB redesign is required.

Q: What is the difference in contact material between these two relays?

A: The main part uses Silver Cadmium Oxide (AgCdO) and Gold (Au) contact material, while the substitute uses Silver Tin Oxide (AgSnO). Both materials are rated for identical switching loads (8A) and voltages (400VAC maximum), providing functionally equivalent performance for the specified application.

Q: Why is the main part listed as obsolete?

A: The 3-1393222-8 is classified as obsolete by the manufacturer. The 3-1393222-4 is the active equivalent part currently in production, ensuring ongoing availability for procurement and system maintenance.

Q: Are there any environmental or compliance differences between these parts?

A: The substitute part 3-1393222-4 carries ROHS3 compliance certification, meeting current environmental regulatory standards. Both parts share identical moisture sensitivity classification (MSL 1 - Unlimited) and export classification (ECCN EAR99).

Q: Do these relays have identical timing characteristics?

A: Yes. Both parts operate with 10ms operate time and 5ms release time, ensuring identical switching speed performance in control circuits.

Q: What is the coil voltage for the substitute part?

A: The coil voltage specification for the 3-1393222-4 is not provided in the available technical data. If the application requires a specific coil voltage, this parameter must be verified against system design requirements before implementation.

Q: Are the packaging formats different between these parts?

A: The main part is specified with standard packaging, while the substitute part is supplied in bulk packaging. This difference affects procurement and inventory management but does not impact functional performance or compatibility.