74903-709 Equivalent & Substitute Parts

Part Overview

The 74903-709 is an 8-position rectangular connector housing from Amphenol ICC (FCI) in the LATCH-N-LOK™ series. This plug housing features a 0.100" (2.54mm) pitch, crimp termination, and latch lock fastening mechanism. The part is classified as obsolete, making identification of active equivalent parts essential for ongoing procurement and system maintenance. Substitute parts must maintain identical electrical and mechanical specifications to ensure direct interchangeability without design modifications.

Key Parameters

Parameter	Specification
Connector Type	Plug
Contact Type	Female Socket
Number of Positions	8
Pitch	0.100" (2.54mm)
Number of Rows	1
Mounting Type	Free Hanging (In-Line)
Contact Termination	Crimp
Fastening Type	Latch Lock
Color	Gray
Features	Shielded
Insulation Material	Polyamide (PA), Nylon
Operating Temperature Range	-40°C to 85°C

Substitute Part Grouping Explanation

Substitution of the 74903-709 is based on strict equivalence across all critical electrical and mechanical parameters. The substitute part must match the following criteria:

Connector type: Plug housing
Contact configuration: Female socket, 8 positions
Pitch specification: 0.100" (2.54mm)
Row configuration: Single row
Mounting method: Free hanging (in-line)
Termination method: Crimp
Fastening mechanism: Latch lock
Physical characteristics: Gray color, shielded design
Material composition: Polyamide (PA), Nylon insulation
Thermal performance: -40°C to 85°C operating range

The 74903-709LF meets all these requirements and is classified as an active product, making it a direct functional equivalent.

Parameter Comparison

Parameter	74903-709 (Main Part)	74903-709LF (Substitute)	Match Status
Manufacturer	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Identical
Series	LATCH-N-LOK™	LATCH-N-LOK™	Identical
Connector Type	Plug	Plug	Identical
Contact Type	Female Socket	Female Socket	Identical
Number of Positions	8	8	Identical
Pitch	0.100" (2.54mm)	0.100" (2.54mm)	Identical
Number of Rows	1	1	Identical
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Identical
Contact Termination	Crimp	Crimp	Identical
Fastening Type	Latch Lock	Latch Lock	Identical
Color	Gray	Gray	Identical
Features	Shielded	Shielded	Identical
Insulation Material	Polyamide (PA), Nylon	Polyamide (PA), Nylon	Identical
Operating Temperature	-40°C to 85°C	-40°C to 85°C	Identical
Product Status	Obsolete	Active	Substitute is active
RoHS Status	RoHS non-compliant	RoHS Compliant	Substitute offers improved compliance

Engineering Selection Recommendations

The 74903-709LF is the direct equivalent for the obsolete 74903-709. Both parts are manufactured by Amphenol ICC (FCI) within the LATCH-N-LOK™ series and share identical electrical and mechanical specifications. The primary distinction is product status and regulatory compliance.

The 74903-709LF is classified as an active product with current manufacturing support, ensuring long-term availability and supply chain continuity. Additionally, the 74903-709LF carries RoHS compliance certification, whereas the original 74903-709 is RoHS non-compliant. For applications requiring regulatory compliance with modern environmental standards, the 74903-709LF is the appropriate selection.

Both parts are functionally interchangeable in all electrical and mechanical aspects. No design modifications or re-qualification are required when transitioning from 74903-709 to 74903-709LF.

Frequently Asked Questions (FAQ)

Q: Can 74903-709LF be used as a direct replacement for 74903-709?

A: Yes. The 74903-709LF is a direct equivalent. All electrical and mechanical parameters are identical, including connector type, contact configuration, pitch, mounting method, termination type, and operating temperature range. No design changes are required.

Q: What is the difference between 74903-709 and 74903-709LF?

A: The primary differences are product status and regulatory compliance. The 74903-709 is obsolete and RoHS non-compliant. The 74903-709LF is an active product with RoHS compliance certification. Functionally and mechanically, both parts are equivalent.

Q: Why is the 74903-709 listed as obsolete?

A: The 74903-709 has been superseded by the 74903-709LF, which offers improved regulatory compliance and active manufacturing support. Amphenol ICC (FCI) recommends transitioning to the 74903-709LF for new designs and ongoing procurement.

Q: Are there packaging differences between these parts?

A: The 74903-709 is listed with unspecified packaging, while the 74903-709LF is supplied in bulk packaging. Both parts are identical in form, fit, and function. Packaging differences do not affect electrical or mechanical compatibility.

Q: Does the RoHS compliance difference affect compatibility?

A: No. RoHS compliance is a regulatory and environmental certification status. It does not affect the electrical or mechanical performance of the connector. Both parts operate identically within the specified -40°C to 85°C temperature range.

Q: Are contacts included with these connector housings?

A: No. Both the 74903-709 and 74903-709LF are connector housings only. Contacts must be procured separately and crimped into the housing according to Amphenol ICC (FCI) specifications.

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