TE Connectivity 1-643813-8 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 1-643813-8 is an 18-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 22 AWG discrete or ribbon cable. This connector features tin-lead contact finish, a closed-end design, and a locking ramp fastening mechanism. The part is currently active in production with 906 units in stock.

Substitute parts are identified when equivalent connectors share identical functional specifications across connector type, position count, pitch, termination method, wire gauge, and mounting configuration. Identifying suitable alternatives is necessary for supply chain flexibility, compliance requirements, and inventory optimization.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	18
Pitch	0.100" (2.54mm)
Number of Rows	1
Mounting Type	Free Hanging (In-Line), Right Angle
Cable Termination	IDC
Wire Gauge	22 AWG
Wire Type	Discrete or Ribbon Cable
Features	Closed End
Fastening Type	Locking Ramp
Series	MTA-100

Substitute Part Grouping Explanation

Substitution eligibility for the 1-643813-8 is determined by strict equivalence across the following critical parameters:

Connector Type & Contact Configuration: Receptacle with female socket contacts
Position Count & Pitch: 18 positions at 0.100" (2.54mm) spacing
Termination Method: IDC cable termination
Wire Specifications: 22 AWG wire gauge for discrete or ribbon cable
Mechanical Interface: Free hanging (in-line) and right angle mounting with locking ramp fastening
Electrical Characteristics: Closed-end design

The substitute part 4-643813-8 maintains identical specifications across all these parameters. Variations in contact finish material (tin-lead versus tin) and RoHS compliance status do not affect mechanical or electrical interchangeability within the MTA-100 series.

Parameter Comparison

Parameter	1-643813-8 (Main Part)	4-643813-8 (Substitute)
Manufacturer	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors
Series	MTA-100	MTA-100
Connector Type	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket
Number of Positions	18	18
Pitch	0.100" (2.54mm)	0.100" (2.54mm)
Number of Rows	1	1
Mounting Type	Free Hanging (In-Line), Right Angle	Free Hanging (In-Line), Right Angle
Fastening Type	Locking Ramp	Locking Ramp
Cable Termination	IDC	IDC
Wire Type	Discrete or Ribbon Cable	Discrete or Ribbon Cable
Wire Gauge	22 AWG	22 AWG
Features	Closed End	Closed End
Contact Finish	Tin-Lead	Tin
Contact Finish Thickness	80.0µin (2.03µm)	80.0µin (2.03µm)
Color	Red	Red
Product Status	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8536.69.8000	8536.69.8000

Engineering Selection Recommendations

Both the 1-643813-8 and 4-643813-8 are active production parts from TE Connectivity's MTA-100 series and are mechanically and electrically interchangeable for applications requiring 18-position IDC receptacle connectors with 22 AWG wire termination.

Compliance Considerations:

The 1-643813-8 carries RoHS non-compliant status, while the 4-643813-8 is ROHS3 compliant. Applications subject to RoHS directives or customer specifications requiring RoHS compliance must use the 4-643813-8 substitute.

Contact Finish Specification:

The primary difference between these parts is the contact finish material. The 1-643813-8 uses tin-lead finish, while the 4-643813-8 uses tin finish. Both maintain identical contact finish thickness of 80.0µin (2.03µm). Selection between these finishes depends on application-specific requirements and soldering process compatibility.

Inventory & Availability:

The 4-643813-8 substitute is available with 948 units in stock, compared to 906 units for the main part. Both parts are supplied in active production status with unlimited moisture sensitivity tolerance (MSL 1).

Frequently Asked Questions (FAQ)

Q: Are the 1-643813-8 and 4-643813-8 mechanically interchangeable?

A: Yes. Both connectors share identical mechanical specifications including 18 positions, 0.100" pitch, free hanging/right angle mounting, locking ramp fastening, and closed-end design. They are fully interchangeable in applications requiring these mechanical parameters.

Q: What is the difference between tin-lead and tin contact finishes?

A: The 1-643813-8 features tin-lead contact finish, while the 4-643813-8 features tin finish. Both maintain the same contact finish thickness of 80.0µin (2.03µm). The choice between these finishes depends on soldering process compatibility and application requirements. Tin-lead finishes are typically used in legacy systems, while tin finishes are standard in modern RoHS-compliant applications.

Q: Can I use the 4-643813-8 as a direct replacement for the 1-643813-8 in RoHS-compliant designs?

A: Yes. The 4-643813-8 is ROHS3 compliant and maintains all electrical and mechanical specifications of the 1-643813-8. It is suitable for applications requiring RoHS compliance.

Q: What is the significance of the MSL 1 rating?

A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life with no moisture sensitivity precautions required. Both the 1-643813-8 and 4-643813-8 carry this rating, meaning they can be stored and handled without special moisture control measures.

Q: Are there any differences in IDC termination compatibility?

A: No. Both connectors use identical IDC (Insulation Displacement Contact) termination and accept 22 AWG discrete or ribbon cable. Termination tooling and procedures are identical for both parts.

Q: What packaging options are available?

A: The 1-643813-8 is supplied with unspecified packaging, while the 4-643813-8 is supplied in bulk packaging. Confirm packaging requirements with your procurement specifications.

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