Equivalent & Substitute Parts for 53611-S16-6

Part Overview

The Amphenol ICC 53611-S16-6 is a rectangular connector header with vertical orientation, 16 positions, and 2.54mm pitch designed for through-hole board-to-cable/wire applications. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The connector features shrouded 4-wall construction with solder termination and latch lock/eject hooks for secure mating.

Key Parameters

Parameter	Value
Manufacturer Part Number	53611-S16-6
Manufacturer	Amphenol ICC (FCI)
Category	Rectangular Connectors
Connector Type	Header
Contact Type	Male Pin
Number of Positions	16
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Shrouding	Shrouded - 4 Wall
Fastening Type	Latch Lock/Eject Hooks
Contact Shape	Square
Insulation Material	Thermoplastic
Insulation Color	Black
Material Flammability Rating	UL94 V-0
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters:

Primary Matching Criteria:

Connector Type: Header
Contact Type: Male Pin
Number of Positions: 16
Number of Rows: 2
Pitch - Mating: 0.100" (2.54mm)
Row Spacing - Mating: 0.100" (2.54mm)
Mounting Type: Through Hole
Termination: Solder
Shrouding: Shrouded - 4 Wall
Contact Shape: Square
Material Flammability Rating: UL94 V-0

Secondary Compatibility Parameters:

Contact Length - Mating: 0.230" to 0.240" (5.84mm to 6.10mm)
Contact Length - Post: 0.110" to 0.155" (2.79mm to 3.94mm)
Insulation Height: 0.549" to 0.640" (13.94mm to 16.26mm)
Fastening Type: Latch Lock/Eject Hooks or Latch Lock/Eject Hooks, Long
Contact Finish - Mating: Gold or Gold-Palladium
Insulation Material: Thermoplastic
Insulation Color: Black (primary) or Blue (acceptable variant)

All substitute parts listed maintain functional and mechanical compatibility with the original 53611-S16-6 specification while offering improved compliance status or enhanced availability.

Parameter Comparison

Part Number	Manufacturer	Series	Contact Length - Mating	Contact Length - Post	Insulation Height	Contact Finish - Mating	Contact Finish - Post	Operating Temperature	Current Rating	Voltage Rating	Product Status	RoHS Status	Inventory
53611-S16-6	Amphenol ICC (FCI)	Quickie™	0.230" (5.84mm)	0.150" (3.81mm)	0.640" (16.26mm)	Gold or Gold, GXT™	—	—	—	—	Obsolete	RoHS non-compliant	737 Pcs
53611-S16-6LF	Amphenol ICC (FCI)	Quickie™	0.230" (5.84mm)	0.150" (3.81mm)	0.640" (16.26mm)	Gold or Gold, GXT™	Tin	—	—	—	Active	RoHS Compliant	783 Pcs
102321-3	TE Connectivity AMP Connectors	AMP-Latch	0.240" (6.10mm)	0.155" (3.94mm)	0.549" (13.94mm)	Gold or Gold-Palladium	Tin-Lead	-65°C ~ 105°C	1A per Contact	250VAC	Active	RoHS non-compliant	2165 Pcs
2-5499206-3	TE Connectivity AMP Connectors	AMP-Latch	0.240" (6.10mm)	0.110" (2.79mm)	0.549" (13.94mm)	Gold or Gold-Palladium	Tin	-65°C ~ 105°C	1A	250VAC	Active	ROHS3 Compliant	1614 Pcs
499206-3	TE Connectivity AMP Connectors	AMP-Latch	0.240" (6.10mm)	0.110" (2.79mm)	0.549" (13.94mm)	Gold or Gold-Palladium	Tin-Lead	-65°C ~ 105°C	1A	250VAC	Active	RoHS non-compliant	1144 Pcs
499922-3	TE Connectivity AMP Connectors	AMP-Latch	0.240" (6.10mm)	0.110" (2.79mm)	0.549" (13.94mm)	Gold or Gold-Palladium	Tin-Lead	-65°C ~ 105°C	1A	250VAC	Active	Not applicable	1154 Pcs
5102321-3	TE Connectivity AMP Connectors	AMP-Latch	0.240" (6.10mm)	0.155" (3.94mm)	0.549" (13.94mm)	Gold or Gold-Palladium	Tin	-65°C ~ 105°C	1A per Contact	250VAC	Active	ROHS3 Compliant	2143 Pcs
5499206-3	TE Connectivity AMP Connectors	AMP-Latch	0.240" (6.10mm)	0.110" (2.79mm)	0.549" (13.94mm)	Gold or Gold-Palladium	Tin	-65°C ~ 105°C	1A	250VAC	Active	RoHS Compliant	3626 Pcs
5499922-3	TE Connectivity AMP Connectors	AMP-Latch	0.240" (6.10mm)	0.110" (2.79mm)	0.549" (13.94mm)	Gold or Gold-Palladium	Tin	-65°C ~ 105°C	1A	250VAC	Active	RoHS Compliant	1412 Pcs
5499923-3	TE Connectivity AMP Connectors	AMP-Latch	0.240" (6.10mm)	0.155" (3.94mm)	0.549" (13.94mm)	Gold or Gold-Palladium	Tin	-65°C ~ 105°C	1A per Contact	250VAC	Active	ROHS3 Compliant	2394 Pcs
5746443-3	TE Connectivity AMP Connectors	AMP-Latch	0.240" (6.10mm)	0.174" (4.42mm)	0.549" (13.94mm)	Gold or Gold-Palladium	Tin	-65°C ~ 105°C	1A per Contact	—	Active	RoHS Compliant	1036 Pcs

Engineering Selection Recommendations

Primary Recommendation: 53611-S16-6LF

The 53611-S16-6LF is the direct successor to the obsolete 53611-S16-6, manufactured by Amphenol ICC within the same Quickie™ series. This part maintains identical mechanical and electrical specifications while achieving RoHS Compliance status. The only modification is the addition of tin post finish, which does not affect functional compatibility. This part is active in production and represents the lowest-risk substitution path.

Secondary Recommendations: TE Connectivity AMP-Latch Series

For applications requiring enhanced compliance or expanded operating temperature specifications, the TE Connectivity AMP-Latch series provides active alternatives:

5499206-3 and 5499922-3: RoHS Compliant options with highest inventory availability (3626 Pcs and 1412 Pcs respectively). These parts feature shorter post length (0.110") compared to the original specification, suitable for applications with reduced PCB thickness or clearance constraints.
5102321-3 and 5499923-3: ROHS3 Compliant options with post length matching the original specification (0.155"). These parts provide the closest dimensional alignment to the 53611-S16-6 while offering modern compliance certifications.
102321-3: Active part with tin-lead post finish and highest contact length (0.155"), providing maximum mating contact engagement. Suitable for applications requiring enhanced contact reliability.
5746443-3: Unique termination option combining press-fit and solder capabilities, offering design flexibility for mixed assembly methods. Longest post length (0.174") available among substitutes.

Compliance Considerations:

All substitute parts maintain UL94 V-0 flammability rating and thermoplastic insulation material. TE Connectivity parts provide defined operating temperature range (-65°C to 105°C) and current/voltage ratings (1A per contact, 250VAC), whereas the original part does not specify these parameters. Parts with ROHS3 or RoHS Compliant status are preferred for new designs subject to regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can 53611-S16-6LF be used as a direct replacement for 53611-S16-6?

A: Yes. The 53611-S16-6LF is the active production equivalent manufactured by Amphenol ICC. It maintains identical pitch (2.54mm), position count (16), row configuration (2 rows), contact geometry, and mounting specifications. The only difference is the addition of tin post finish and RoHS Compliance status, both of which are compatible with the original design.

Q: What is the difference between TE Connectivity AMP-Latch parts and the Amphenol Quickie™ series?

A: Both series meet the core substitution criteria: 16-position, 2-row, 2.54mm pitch headers with shrouded 4-wall construction and solder termination. The primary differences are manufacturer, series designation, and minor dimensional variations in contact length and insulation height. TE Connectivity parts provide specified operating temperature range and electrical ratings, while Amphenol parts do not. Both are mechanically and electrically compatible for board-to-cable/wire applications.

Q: Which substitute part should I select if my PCB has limited clearance?

A: Parts with shorter post length are suitable for constrained applications. Select from 5499206-3, 5499922-3, or 499206-3, all featuring 0.110" (2.79mm) post length. These reduce the overall connector height while maintaining full electrical and mechanical functionality.

Q: Are all substitute parts RoHS compliant?

A: No. RoHS compliance varies by part number. 53611-S16-6LF, 2-5499206-3, 5102321-3, 5499206-3, 5499922-3, 5499923-3, and 5746443-3 are RoHS or ROHS3 Compliant. Parts 102321-3 and 499206-3 are RoHS non-compliant. Part 499922-3 has not applicable RoHS status. Select compliant parts for applications subject to RoHS regulations.

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

A: Both finishes provide solder compatibility and are functionally equivalent for through-hole termination. Tin finish (RoHS compliant) is preferred for new designs. Tin-lead finish (RoHS non-compliant) is available in legacy parts. The choice does not affect electrical performance or mechanical fit.

Q: Can I use parts with different contact lengths interchangeably?

A: Contact length variations (0.110" to 0.155" post length) are acceptable substitutions provided the PCB thickness and mating connector depth accommodate the dimensional change. Verify clearance and mating depth specifications in your application before selecting parts with significantly different contact lengths.

Q: Which substitute offers the best inventory availability?

A: 5499206-3 offers the highest inventory (3626 Pcs), followed by 5499923-3 (2394 Pcs) and 102321-3 (2165 Pcs). All three are active production parts with RoHS or ROHS3 compliance.

Q: Is 5746443-3 compatible with standard solder-only assembly?

A: Yes. Although 5746443-3 features combined press-fit and solder termination, it functions as a standard solder-terminated header when used in conventional through-hole assembly. The press-fit capability is optional and does not interfere with solder termination.

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