TE Connectivity AMP 4-1734592-2 FPC Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP 4-1734592-2 is a 42-position FPC (Flat Flexible) connector with bottom-mounted contacts, 0.5mm pitch, and right-angle surface mount configuration. This connector features zero insertion force (ZIF) operation, slide lock mechanism, and is rated for 250V at 0.5A continuous current. The product is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design requirements and procurement needs.

Substiute Parts

4-1734592-2

TE Connectivity AMP ConnectorsIn Stock: 10714-1734592-2 Datasheet

Current PartRFQ

FFC2B35-42-G

GCTIn Stock: 1098FFC2B35-42-G Datasheet

SimilarRFQ

FH12A-42S-0.5SH(55)

Hirose Electric Co LtdIn Stock: 919FH12A-42S-0.5SH(55) Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of FPC connectors is determined by strict alignment of the following critical parameters:

Primary Matching Criteria:

• Number of positions: 42
• Pitch: 0.020" (0.50mm)
• Mounting type: Surface mount, right angle
• Termination method: Solder
• FFC/FCB thickness: 0.30mm
• Contact material: Phosphor bronze with gold finish
• Housing material: Liquid crystal polymer (LCP)
• Flammability rating: UL94 V-0
• Moisture sensitivity level: 1 (Unlimited)

Secondary Compatibility Factors:

• Voltage rating (minimum 50V required for all substitutes)
• Current rating (minimum 0.4A required for all substitutes)
• Operating temperature range overlap
• Locking mechanism type (slide lock or flip lock acceptable)
• Contact orientation (bottom or top mounted)

The two substitute parts identified meet the primary matching criteria for position count, pitch, mounting configuration, and material specifications. Variations in voltage rating, current rating, locking mechanism, and contact orientation are documented in the parameter comparison table below.

Parameter Comparison

Engineering Selection Recommendations

GCT FFC2B35-42-G: This substitute maintains bottom-contact orientation matching the original 4-1734592-2 configuration. The connector is active product status with ROHS3 compliance. The primary design consideration is the reduced voltage rating (50V versus 250V) and current rating (0.4A versus 0.5A). The flip lock mechanism differs from the original slide lock. Height above board is 0.02mm lower than the original. This substitute is suitable for applications where voltage and current requirements do not exceed 50V and 0.4A respectively.

Hirose FH12A-42S-0.5SH(55): This substitute features top-contact orientation, which represents a significant mechanical difference from the bottom-contact original design. The connector is active product status with RoHS compliance and maintains the full 0.5A current rating. The voltage rating is reduced to 50V. The operating temperature range matches the original (-40°C ~ 85°C). The flip lock mechanism and zero insertion force feature are present. This substitute requires PCB layout modification due to top-contact orientation and is suitable for applications where voltage requirements do not exceed 50V.

Both substitutes are active products with current manufacturing availability and compliance certifications. Selection between substitutes depends on contact orientation requirements (bottom versus top) and application voltage/current specifications.

Frequently Asked Questions (FAQ)

Q: Can FFC2B35-42-G directly replace 4-1734592-2 on existing PCBs?

A: Direct replacement is possible if the PCB layout accommodates bottom-contact orientation and the application voltage and current requirements do not exceed 50V and 0.4A respectively. The 0.02mm difference in height above board is within typical PCB assembly tolerances. The flip lock mechanism differs from the original slide lock but provides equivalent mechanical retention.

Q: Why does FH12A-42S-0.5SH(55) have top-contact orientation instead of bottom?

A: The Hirose FH12A series is designed with top-contact configuration as a standard product feature. This requires PCB redesign to accommodate the different contact orientation. Top-contact connectors are not interchangeable with bottom-contact connectors on existing PCBs without layout modification.

Q: What is the voltage rating limitation for the substitute parts?

A: Both substitute parts are rated for 50V maximum, compared to the original 250V rating. Applications requiring voltage ratings above 50V cannot use these substitutes. Voltage rating is determined by the dielectric strength of the housing material and contact spacing.

Q: Are the substitute parts RoHS compliant?

A: Yes. FFC2B35-42-G is ROHS3 compliant, and FH12A-42S-0.5SH(55) is RoHS compliant. Both meet current environmental compliance requirements.

Q: What is the difference between slide lock and flip lock mechanisms?

A: Slide lock (original) and flip lock (substitutes) are different mechanical retention systems. Slide lock uses a sliding actuator, while flip lock uses a hinged actuator. Both provide zero insertion force operation and secure cable retention. The locking mechanism type affects assembly procedures and cable insertion/removal methods.

Q: Can I use FFC2B35-42-G if my application requires 0.5A current?

A: No. FFC2B35-42-G is rated for 0.4A maximum continuous current. Applications requiring 0.5A current must use FH12A-42S-0.5SH(55), which maintains the 0.5A rating, or identify alternative substitutes with higher current ratings.

Q: What is the operating temperature range for each substitute?

A: FFC2B35-42-G operates from -25°C to 85°C, which is narrower than the original -40°C to 85°C range. FH12A-42S-0.5SH(55) operates from -40°C to 85°C, matching the original range. Applications requiring operation below -25°C must use FH12A-42S-0.5SH(55).

Q: Are the substitute parts available in the same packaging?

A: Both substitute parts are supplied in Tape & Reel (TR) packaging. The original 4-1734592-2 packaging specification was not provided. Tape & Reel packaging is standard for surface mount FPC connectors and is suitable for automated assembly processes.

Q: What is the mating cycle rating for each part?

A: FFC2B35-42-G is rated for 30 mating cycles. FH12A-42S-0.5SH(55) is rated for 20 mating cycles. The original 4-1734592-2 mating cycle rating was not specified. Mating cycle rating indicates the mechanical durability of the connector under repeated insertion and removal operations.