Amphenol ICC 71991-803 Rectangular Connector - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 71991-803 is a 6-position receptacle connector from the Dubox™ series, designed for board-to-board applications with 0.100" (2.54mm) pitch spacing. This connector features through-hole solder termination, gold-plated mating contacts, and is rated for automotive, general purpose, industrial, and telecommunications applications.

The 71991-803 carries an obsolete product status. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this connector.

Key Parameters

Parameter	Value
Connector Type	Receptacle, Bottom or Top Entry
Number of Positions	6
Pitch - Mating	0.100" (2.54mm)
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Contact Type	Female Socket
Contact Finish - Mating	Gold
Contact Finish Thickness - Mating	15.0µin (0.38µm)
Insulation Material	Thermoplastic, Glass Filled
Material Flammability Rating	UL94 V-0
Mated Stacking Heights	11.04mm

Substitute Part Grouping Explanation

Substitution eligibility for the 71991-803 is determined by strict equivalence across the following critical parameters:

Connector type and entry configuration (Receptacle, Bottom or Top Entry)
Position count and arrangement (6 positions, 2 rows)
Pitch specifications (0.100" mating pitch, 0.100" row spacing)
Mounting and termination method (Through Hole, Solder)
Contact configuration (Female Socket, Gold mating finish)
Physical envelope (Mated stacking height of 11.04mm)
Material and flammability compliance (Thermoplastic Glass Filled, UL94 V-0)

The substitute part 71991-803LF meets all these criteria and is manufactured by the same supplier (Amphenol ICC) within the same Dubox™ series. The primary distinction is product status and regulatory compliance posture.

Parameter Comparison

Parameter	71991-803	71991-803LF
Manufacturer	Amphenol ICC (FCI)	Amphenol ICC (FCI)
Series	Dubox™	Dubox™
Product Status	Obsolete	Active
Connector Type	Receptacle, Bottom or Top Entry	Receptacle, Bottom or Top Entry
Number of Positions	6	6
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Number of Rows	2	2
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole	Through Hole
Termination	Solder	Solder
Contact Type	Female Socket	Female Socket
Contact Finish - Mating	Gold	Gold
Contact Finish Thickness - Mating	15.0µin (0.38µm)	15.0µin (0.38µm)
Insulation Color	Blue	Blue
Insulation Height	0.275" (6.99mm)	0.275" (6.99mm)
Contact Length - Post	0.118" (3.00mm)	0.118" (3.00mm)
Material Flammability Rating	UL94 V-0	UL94 V-0
Contact Finish - Post	Tin	Tin
Mated Stacking Heights	11.04mm	11.04mm
Insulation Material	Thermoplastic, Glass Filled	Thermoplastic, Glass Filled
Contact Shape	Square	Square
Contact Material	Phosphor Bronze	Phosphor Bronze
Contact Finish Thickness - Post	78.7µin (2.00µm)	78.7µin (2.00µm)
RoHS Status	RoHS non-compliant	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040

Engineering Selection Recommendations

The 71991-803LF is the direct functional equivalent of the 71991-803. Both connectors are electrically and mechanically identical across all specified parameters.

The 71991-803LF is recommended for new designs and ongoing production due to its active product status. This part maintains full compatibility with existing mating connectors and PCB layouts designed for the 71991-803.

The 71991-803LF carries RoHS compliance certification, whereas the original 71991-803 is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the 71991-803LF is the appropriate selection. The 71991-803LF is also REACH Affected, compared to the 71991-803 which is REACH Unaffected.

Both parts share identical electrical and mechanical specifications, including contact materials, finishes, pitch, mounting configuration, and flammability ratings. Selection between these parts should be based on product availability, regulatory compliance requirements, and supply chain considerations.

Frequently Asked Questions (FAQ)

Q: Are the 71991-803 and 71991-803LF mechanically interchangeable?

A: Yes. Both connectors share identical mechanical specifications including pitch (0.100"), number of positions (6), row configuration (2 rows), mounting type (through hole), and mated stacking height (11.04mm). They are directly interchangeable in PCB layouts and mating applications.

Q: What is the difference between these two part numbers?

A: The primary differences are product status and regulatory compliance. The 71991-803 is obsolete and RoHS non-compliant, while the 71991-803LF is active and RoHS compliant. All electrical and mechanical parameters are identical.

Q: Can I use 71991-803LF as a replacement for 71991-803 in existing designs?

A: Yes. The 71991-803LF is a direct substitute with identical electrical and mechanical specifications. No design modifications are required.

Q: What does the "LF" suffix indicate?

A: The "LF" suffix typically indicates lead-free or RoHS-compliant variants in connector part numbering schemes. The 71991-803LF is RoHS compliant.

Q: Are there any packaging differences between these parts?

A: The 71991-803 packaging is not specified in the available data. The 71991-803LF is supplied in Tube packaging.

Q: What is the contact finish specification for mating surfaces?

A: Both parts feature gold-plated mating contacts with a thickness of 15.0µin (0.38µm). Post contacts are tin-plated with a thickness of 78.7µin (2.00µm).

Q: Are these connectors suitable for automotive applications?

A: Yes. Both the 71991-803 and 71991-803LF are rated for automotive, general purpose, industrial, and telecommunications applications.

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