TE Connectivity AMP Connectors 1877846-4 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 1877846-4 is a 6-position circular connector plug with male pins and solder cup termination, designed for medical applications. This connector features gold-plated mating contacts, a thermoplastic shell, and latch lock fastening. The part is currently active in production with 995 pieces in stock.

Substitute parts are identified when equivalent electrical and mechanical parameters are met, allowing for component interchangeability in applications where the primary part is unavailable or when alternative sourcing is required.

Substiute Parts

1877846-4

TE Connectivity AMP ConnectorsIn Stock: 10051877846-4 Datasheet

Current PartRFQ

EN3C6MX

Switchcraft Inc.In Stock: 2741EN3C6MX Datasheet

SimilarRFQ

EN3L6MX

Switchcraft Inc.In Stock: 2851EN3L6MX Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1877846-4 is determined by the following critical parameters:

Primary Substitution Criteria:

• 6-position connector configuration
• Solder cup termination method
• Gold-plated mating contacts
• Male pin connector type
• Thermoplastic shell construction
• Copper alloy contact material
• Free hanging in-line mounting

Compatibility Considerations: Substitute parts must maintain electrical compatibility through equivalent current and voltage ratings. Mechanical compatibility is established through matching connector type (plug vs. receptacle), position count, and termination method. Operating temperature range, shell material, and contact finish specifications determine functional equivalence in the intended application environment.

The EN3C6MX and EN3L6MX parts from Switchcraft Inc. share the core electrical and mechanical characteristics of the 1877846-4, including 6-position configuration, solder cup termination, gold contact finish, and thermoplastic construction. However, differences in fastening type, orientation, and operating temperature range must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

1877846-4 (TE Connectivity AMP Connectors - Medical CPC Series)

The 1877846-4 is the primary component specified for medical applications requiring the Medical CPC series designation. This part maintains active production status with established inventory availability. The connector supports the full operating temperature range of -50°C to 170°C and delivers 300VAC voltage rating, suitable for demanding medical device environments.

EN3C6MX (Switchcraft Inc. - EN3® Series)

The EN3C6MX is a plug connector with equivalent 6-position, solder cup, gold-plated configuration. This part is ROHS3 compliant and provides enhanced ingress protection (IP66/IP68). The current rating of 7.5A exceeds the 1877846-4 specification. However, the operating temperature range (-40°C to 65°C) is narrower and the voltage rating (250VAC/DC) is lower than the primary part. The EN3C6MX is suitable for general purpose, instrumentation, marine, and medical applications where the reduced temperature and voltage specifications are acceptable.

EN3L6MX (Switchcraft Inc. - EN3® Series)

The EN3L6MX is a receptacle connector with male pins, differing from the 1877846-4 plug configuration. This part shares the same electrical and mechanical characteristics as the EN3C6MX, including ROHS3 compliance, IP66/IP68 ingress protection, and equivalent current/voltage ratings. The receptacle configuration makes this part suitable for mating applications rather than direct substitution of the plug connector.

All substitute parts maintain active production status and are available in bulk packaging with higher inventory levels than the primary part.

Frequently Asked Questions (FAQ)

Q: Can the EN3C6MX directly replace the 1877846-4 in all applications?

A: The EN3C6MX shares the core electrical and mechanical specifications (6-position, solder cup, gold contacts, copper alloy material). However, the operating temperature range of the EN3C6MX (-40°C to 65°C) is narrower than the 1877846-4 (-50°C to 170°C), and the voltage rating is lower (250VAC/DC vs. 300VAC). Direct substitution is limited to applications operating within the EN3C6MX temperature and voltage specifications. Additionally, the fastening mechanism differs (bayonet lock vs. latch lock), which may affect mechanical compatibility with mating connectors.

Q: What is the difference between the EN3C6MX and EN3L6MX?

A: The EN3C6MX is a plug connector with male pins, while the EN3L6MX is a receptacle connector with male pins. Both share identical electrical ratings and mechanical specifications. The EN3C6MX is used for cable termination in plug applications, whereas the EN3L6MX is used for panel or device mounting in receptacle applications. These parts are not interchangeable with each other due to their opposite connector types.

Q: Are the Switchcraft EN3® series parts suitable for medical applications?

A: The EN3C6MX and EN3L6MX are listed as suitable for medical applications among their general purpose, instrumentation, and marine applications. Both parts are ROHS3 compliant and carry active product status. However, the 1877846-4 is specifically designated for the Medical CPC series. Application-specific medical device requirements should be evaluated against the electrical and environmental specifications of each part.

Q: What is the significance of the cable opening range differences?

A: The 1877846-4 specifies a cable opening range of 0.209" to 0.256" (5.30mm to 6.50mm), while the Switchcraft parts specify 0.160" to 0.265" (4.06mm to 6.73mm). The Switchcraft range is broader and accommodates a wider variety of cable diameters. This difference affects mechanical fit and strain relief compatibility. Cable diameter must fall within the specified range for proper connector operation and secure termination.

Q: How do the fastening mechanisms differ between these connectors?

A: The 1877846-4 uses a latch lock fastening mechanism, while the EN3C6MX and EN3L6MX use bayonet lock fastening. Latch lock connectors typically provide push-to-connect and pull-to-disconnect operation, whereas bayonet lock connectors require twisting motion for engagement and disengagement. These different mechanisms are not mechanically compatible with each other and require different mating connector designs.

Q: What does the orientation specification mean?

A: The 1877846-4 specifies an 80° orientation, while the Switchcraft parts specify keyed orientation. Orientation refers to the angular position or keying arrangement of the connector pins. The 80° specification indicates a specific angular offset, whereas keyed orientation uses a physical key or notch to ensure correct mating alignment. These different orientation schemes affect connector alignment and mating compatibility.

Q: Are there inventory considerations for these parts?

A: The 1877846-4 has 995 pieces in stock, while the EN3C6MX has 2,649 pieces and the EN3L6MX has 2,840 pieces available. The Switchcraft parts offer significantly higher inventory availability. For applications where the 1877846-4 is unavailable or requires extended lead times, the Switchcraft alternatives provide immediate sourcing options, subject to electrical and mechanical compatibility verification.