Equivalent & Substitute Parts for 91900-21209LF

Part Overview

The 91900-21209LF is a 9-position connector header manufactured by Amphenol ICC (FCI) designed for surface mount applications with center strip contacts and gold plating. This part is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The connector features solder retention and is part of the Conan™ and MezzSelect™ series. Identifying compatible alternatives ensures design continuity and supply chain flexibility.

Key Parameters

Parameter	Value
Connector Type	Header, Center Strip Contacts
Number of Positions	9
Pitch	0.039" (1.00mm)
Number of Rows	2
Mounting Type	Surface Mount
Contact Finish	Gold or Gold, GXT™
Contact Finish Thickness	15.0µin (0.38µm)
Mated Stacking Height	4.5mm
Height Above Board	0.048" (1.22mm)
Features	Solder Retention
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the 91900-21209LF are qualified based on identical electrical and mechanical parameters: 9-position configuration, 1.00mm pitch, 2-row layout, surface mount technology, gold contact finish at 15.0µin thickness, 4.5mm mated stacking height, and solder retention feature. All substitute parts maintain the same connector type and board height specifications.

The substitute parts are grouped into two categories:

Direct Manufacturer Substitute: 91901-31209LF differs only in packaging format (Tape & Reel) and product status (Active), making it a direct functional replacement with identical electrical and mechanical characteristics.

Parametric Equivalents: 91901-21209 and 91901-21209LF are parametric equivalents with identical connector specifications but differ in packaging (Tube) and compliance certifications. These parts maintain all critical dimensional and electrical parameters required for interchangeability.

Parameter Comparison

Parameter	91900-21209LF	91901-31209LF	91901-21209	91901-21209LF
Connector Type	Header, Center Strip Contacts	Header, Center Strip Contacts	Header, Center Strip Contacts	Header, Center Strip Contacts
Number of Positions	9	9	9	9
Pitch	0.039" (1.00mm)	0.039" (1.00mm)	0.039" (1.00mm)	0.039" (1.00mm)
Number of Rows	2	2	2	2
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Contact Finish	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™
Contact Finish Thickness	15.0µin (0.38µm)	15.0µin (0.38µm)	15.0µin (0.38µm)	15.0µin (0.38µm)
Mated Stacking Height	4.5mm	4.5mm	4.5mm	4.5mm
Height Above Board	0.048" (1.22mm)	0.048" (1.22mm)	0.048" (1.22mm)	0.048" (1.22mm)
Features	Solder Retention	Solder Retention	Solder Retention	Solder Retention
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active
Packaging	Unspecified	Tape & Reel (TR)	Tube	Tube
RoHS Status	Not specified	RoHS Compliant	RoHS non-compliant	RoHS Compliant

Engineering Selection Recommendations

For new designs and production applications, 91901-21209LF is the preferred substitute. This part maintains all electrical and mechanical parameters identical to the obsolete 91900-21209LF while offering active product status and RoHS compliance certification.

91901-31209LF serves as an alternative when Tape & Reel packaging is required for automated assembly processes. This part is also RoHS compliant and active in production.

91901-21209 is a parametric equivalent available in Tube packaging but carries RoHS non-compliant status. Selection of this part requires evaluation against regulatory requirements for the end application.

All substitute parts are manufactured by Amphenol ICC (FCI) and maintain identical connector specifications, ensuring direct functional interchangeability in surface mount applications requiring 9-position headers with 1.00mm pitch and gold-plated contacts.

Frequently Asked Questions (FAQ)

Q: Can 91901-21209LF be used as a direct replacement for 91900-21209LF?

A: Yes. Both parts share identical electrical and mechanical specifications: 9-position configuration, 1.00mm pitch, 2-row layout, surface mount mounting, gold contact finish at 15.0µin thickness, 4.5mm mated stacking height, and solder retention feature. The primary difference is product status (Active vs. Obsolete) and packaging format.

Q: What is the difference between 91901-31209LF and 91901-21209LF?

A: Both parts are parametrically identical with the same connector specifications. The difference is packaging: 91901-31209LF is supplied in Tape & Reel format suitable for automated pick-and-place assembly, while 91901-21209LF is supplied in Tube packaging. Both are RoHS compliant.

Q: Is 91901-21209 suitable for RoHS-regulated applications?

A: No. 91901-21209 is marked as RoHS non-compliant. For applications requiring RoHS compliance, use 91901-21209LF or 91901-31209LF instead.

Q: Are all substitute parts from the same manufacturer?

A: Yes. All substitute parts are manufactured by Amphenol ICC (FCI), ensuring consistent quality and performance standards.

Q: What packaging options are available for this connector type?

A: Substitute parts are available in Tape & Reel (91901-31209LF) and Tube (91901-21209, 91901-21209LF) packaging formats. Selection depends on assembly process requirements and production volume.

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