Amphenol ICC 71609-309 Rectangular Connector - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 71609-309 is an 18-position receptacle connector with 0.100" (2.54mm) pitch, designed for surface mount, right-angle board-to-board applications. This part is classified as obsolete, making identification of suitable alternatives essential for ongoing production and maintenance requirements. The connector features gold-plated mating contacts, tin-plated posts, and is constructed with thermoplastic, glass-filled insulation rated UL94 V-0.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	18
Pitch - Mating	0.100" (2.54mm)
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Surface Mount, Right Angle
Style	Board to Board
Contact Finish - Mating	Gold (30.0µin / 0.76µm)
Fastening Type	Push-Pull
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 71609-309 is determined by the following critical parameters:

Connector Type & Contact Configuration: Must be receptacle with female socket contacts
Position Count & Pitch: Must maintain 18 positions at 0.100" (2.54mm) pitch
Row Configuration: Must have 2 rows with 0.100" (2.54mm) row spacing
Mounting & Style: Must be surface mount, right-angle, board-to-board configuration
Contact Finish: Must have gold-plated mating contacts with tin-plated posts
Fastening Mechanism: Must use push-pull fastening type
Insulation Material & Rating: Must be thermoplastic, glass-filled with UL94 V-0 rating

Based on these parameters, the following parts qualify as direct substitutes:

Direct Substitute (Identical Electrical & Mechanical Specifications):

71609-309LF - Active product status with RoHS compliance and improved packaging

Non-Equivalent Alternative (Different Connector Type & Position Count):

71918-234LF - Header connector with 34 positions; not electrically or mechanically compatible

Parameter Comparison

Parameter	71609-309 (Main)	71609-309LF (Direct Substitute)	71918-234LF (Non-Equivalent)
Connector Type	Receptacle	Receptacle	Header
Contact Type	Female Socket	Female Socket	Male Pin
Number of Positions	18	18	34
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Rows	2	2	2
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Surface Mount, Right Angle	Surface Mount, Right Angle	Through Hole
Style	Board to Board	Board to Board	Board to Cable/Wire
Contact Finish - Mating	Gold (30.0µin)	Gold (30.0µin)	Gold, GXT™ (30.0µin)
Fastening Type	Push-Pull	Push-Pull	Latch Lock/Eject Hooks, Short
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	RoHS non-compliant	RoHS Compliant	RoHS Compliant
Product Status	Obsolete	Active	Active

Engineering Selection Recommendations

For Direct Replacement:

The 71609-309LF is the appropriate substitute for the obsolete 71609-309. Both parts share identical electrical and mechanical specifications, including connector type, position count, pitch, mounting configuration, and contact finishes. The 71609-309LF offers the additional advantage of active product status and RoHS compliance, making it suitable for new designs and ongoing production where regulatory compliance is required.

For Alternative Applications:

The 71918-234LF is not suitable as a substitute for the 71609-309 due to fundamental differences in connector type (header vs. receptacle), contact gender (male pin vs. female socket), position count (34 vs. 18), mounting method (through-hole vs. surface mount), and application style (board-to-cable vs. board-to-board). This part should only be considered for applications requiring a 34-position header connector with through-hole mounting.

Frequently Asked Questions (FAQ)

Q: Can the 71609-309LF directly replace the 71609-309 in existing designs?

A: Yes. The 71609-309LF maintains identical electrical and mechanical specifications, including position count, pitch, mounting type, contact configuration, and fastening mechanism. The primary differences are product status (active vs. obsolete) and RoHS compliance status.

Q: What is the significance of the "LF" suffix in the 71609-309LF part number?

A: The "LF" designation indicates lead-free termination and RoHS compliance. This part meets current environmental and regulatory requirements while maintaining compatibility with the original 71609-309 specification.

Q: Is the 71918-234LF compatible with applications designed for the 71609-309?

A: No. The 71918-234LF is a fundamentally different connector type (header vs. receptacle) with different position count (34 vs. 18), contact gender (male vs. female), and mounting method (through-hole vs. surface mount). It is not electrically or mechanically compatible.

Q: What packaging options are available for the substitute part?

A: The 71609-309LF is supplied in tube packaging, whereas the original 71609-309 packaging specification was not provided. Verify packaging requirements for your procurement process.

Q: Are there any compliance differences between the main part and the direct substitute?

A: Yes. The 71609-309 is RoHS non-compliant, while the 71609-309LF is RoHS compliant. Both parts maintain UL94 V-0 flammability rating and are REACH unaffected. For applications requiring RoHS compliance, the 71609-309LF is the appropriate selection.

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