TM18R-88 Equivalent & Substitute Parts

Part Overview

The TM18R-88 is a modular jack connector manufactured by Hirose Electric Co Ltd, designed for 8p8c (RJ45, Ethernet) applications with 90° right-angle orientation and unshielded configuration. This connector features surface mount solder termination with board guide and solder retention capabilities. The product is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Key Parameters

Parameter	Value
Connector Type	Jack
Contact Configuration	8p8c (RJ45, Ethernet)
Orientation	90° Angle (Right)
Mounting Type	Surface Mount
Termination Method	Solder
Shielding	Unshielded
Contact Material	Phosphor Bronze
Contact Finish	Gold (50.0µin / 1.27µm)
Housing Material	Polyphenylene Sulfide (PPS)
Operating Temperature Range	-25°C ~ 80°C
Tab Direction	Down

Substitute Part Grouping Explanation

Substitution of the TM18R-88 is determined by strict equivalence across the following critical parameters:

Connector Type & Configuration: Jack connector with 8p8c (RJ45, Ethernet) contact arrangement
Physical Orientation: 90° right-angle mounting with downward tab direction
Mounting & Termination: Surface mount with solder termination
Electrical Properties: Unshielded configuration with phosphor bronze contacts and gold finish (50.0µin thickness)
Environmental Ratings: Operating temperature range and moisture sensitivity level

The substitute part 5555764-1 (TE Connectivity AMP Connectors) meets all these critical parameters. While the substitute offers an extended operating temperature range (-40°C ~ 85°C versus -25°C ~ 80°C) and improved compliance status (RoHS3 compliant versus RoHS non-compliant), the core functional and mechanical specifications remain equivalent for direct substitution in applications designed for the TM18R-88.

Parameter Comparison

Parameter	TM18R-88 (Hirose)	5555764-1 (TE Connectivity)	Compatibility
Connector Type	Jack	Jack	Equivalent
Contact Configuration	8p8c (RJ45, Ethernet)	8p8c (RJ45, Ethernet)	Equivalent
Orientation	90° Angle (Right)	90° Angle (Right)	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Termination	Solder	Solder	Equivalent
Shielding	Unshielded	Unshielded	Equivalent
Contact Material	Phosphor Bronze	Phosphor Bronze	Equivalent
Contact Finish	Gold (50.0µin / 1.27µm)	Gold (50.0µin / 1.27µm)	Equivalent
Housing Material	Polyphenylene Sulfide (PPS)	Polyamide (PA), Nylon	Functionally Equivalent
Operating Temperature	-25°C ~ 80°C	-40°C ~ 85°C	Extended Range
Tab Direction	Down	Down	Equivalent
RoHS Status	RoHS non-compliant	RoHS3 Compliant	Improved Compliance
Product Status	Obsolete	Active	Active Supply

Engineering Selection Recommendations

The 5555764-1 (TE Connectivity AMP Connectors) is the direct functional equivalent for the obsolete TM18R-88. Selection of this substitute is supported by:

Functional Equivalence: All critical electrical and mechanical parameters match the original specification
Active Product Status: The substitute is an active product with confirmed inventory availability (4662 pcs), ensuring long-term supply continuity
Improved Compliance: RoHS3 compliance status provides regulatory advantage over the non-compliant original part
Extended Operating Range: The wider temperature specification (-40°C ~ 85°C) accommodates broader application environments
Packaging Availability: Supplied in tray packaging suitable for automated assembly processes

For applications where the original TM18R-88 specifications are required, the 5555764-1 provides direct substitution without design modification.

Frequently Asked Questions (FAQ)

Q: Can the 5555764-1 be used as a direct replacement for the TM18R-88 in existing designs?

A: Yes. The 5555764-1 meets all critical functional and mechanical parameters of the TM18R-88, including connector type, contact configuration, orientation, mounting method, termination, and contact materials. No design modification is required.

Q: What is the difference in housing material between the two connectors?

A: The TM18R-88 uses Polyphenylene Sulfide (PPS) housing, while the 5555764-1 uses Polyamide (PA) Nylon. Both materials provide adequate mechanical and thermal performance for surface mount modular jack applications. The housing material difference does not affect electrical or mechanical compatibility.

Q: Does the extended operating temperature range of the 5555764-1 affect compatibility?

A: No. The 5555764-1 operating range (-40°C ~ 85°C) encompasses the original TM18R-88 range (-25°C ~ 80°C). This extended specification provides additional margin for applications operating at temperature extremes.

Q: Are there any compliance considerations when substituting the TM18R-88?

A: The 5555764-1 is RoHS3 compliant, whereas the TM18R-88 is RoHS non-compliant. For applications subject to RoHS regulations, the substitute provides improved compliance status. Both parts are EAR99 classified and share identical HTSUS codes.

Q: What packaging format is the 5555764-1 supplied in?

A: The 5555764-1 is supplied in tray packaging, suitable for automated pick-and-place assembly. The TM18R-88 packaging format is not specified in available documentation.

Q: Are contact finish specifications identical between the two parts?

A: Yes. Both connectors feature gold-plated phosphor bronze contacts with 50.0µin (1.27µm) finish thickness, ensuring equivalent electrical performance and contact reliability.

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