Molex 0545481771 FFC, FPC Connector - Equivalent & Substitute Parts

Part Overview

The Molex 0545481771 is a 17-position FFC, FPC connector with 0.5mm pitch, designed for surface mount, right-angle applications. This connector features a slide lock mechanism, zero insertion force (ZIF) design, and solder termination. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts must maintain electrical compatibility, mechanical fit, and performance characteristics within the specified operating parameters.

Substiute Parts

0545481771

MolexIn Stock: 7690545481771 Datasheet

Current PartRFQ

0545481772

MolexIn Stock: 10110545481772 Datasheet

MFR RecommendedRFQ

FFC2B35-17-G

GCTIn Stock: 805FFC2B35-17-G Datasheet

MFR RecommendedRFQ

FH34SRJ-18S-0.5SH(50)

Hirose Electric Co LtdIn Stock: 6713FH34SRJ-18S-0.5SH(50) Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

• Position Count: Must be 17 positions (exact match required for PCB layout compatibility)
• Pitch: Must be 0.020" (0.50mm) (determines connector spacing and mating compatibility)
• Mounting Type: Must be surface mount, right angle (PCB footprint requirement)
• Voltage & Current Ratings: Must meet or exceed 50V and 0.5A (electrical performance requirement)
• Termination: Must be solder (assembly process compatibility)
• FFC, FCB Thickness: Must be 0.30mm (cable compatibility requirement)
• Flammability Rating: Must be UL94 V-0 (safety compliance requirement)

The substitute parts listed below meet these core electrical and mechanical parameters. Variations in height above board, locking mechanism type, and mating cycles represent acceptable design alternatives that do not compromise functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

Molex 0545481772 is the primary recommended substitute. This part is manufactured by Molex, the original manufacturer of the 0545481771, and maintains identical electrical specifications, mechanical dimensions, and locking mechanism. The part is in active production status with ROHS3 compliance documentation available. This substitute provides direct compatibility with existing PCB designs and assembly processes.

GCT FFC2B35-17-G is an alternative substitute for applications where height constraints are not critical. This part maintains all core electrical parameters and is in active production. The increased height above board (2.00mm versus 1.20mm) and flip lock mechanism represent design variations that may require PCB layout verification. Current rating is 0.4A, which is below the original 0.5A specification and must be evaluated against actual circuit requirements.

Hirose FH34SRJ-18S-0.5SH(50) is a functional alternative for applications requiring extended operating temperature range (-55°C ~ 105°C) or enhanced mechanical durability (20 mating cycles). This part has 18 positions instead of 17, requiring PCB redesign and cable reconfiguration. The top and bottom contact configuration differs from the original bottom-only design. This substitute is suitable only when the additional position and dual-contact capability align with system requirements.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0545481772 be used as a direct replacement for the 0545481771?

A: Yes. Both parts share identical position count (17), pitch (0.5mm), mounting type (surface mount, right angle), voltage rating (50V), current rating (0.5A), and locking mechanism (slide lock). PCB footprints and assembly processes are compatible without modification.

Q: What is the primary limitation of the GCT FFC2B35-17-G substitute?

A: The current rating is 0.4A, which is 0.1A below the original 0.5A specification. Applications operating at or near 0.5A must verify that the reduced current rating does not compromise circuit performance. Additionally, the increased height above board (2.00mm) may conflict with space-constrained designs.

Q: Why does the Hirose FH34SRJ-18S-0.5SH(50) have 18 positions instead of 17?

A: The Hirose part is designed with dual contact configuration (top and bottom), which increases the effective position count. This part requires PCB redesign and cable reconfiguration and is suitable only when the additional contact capability is required by the application.

Q: Are all substitute parts RoHS3 compliant?

A: The Molex 0545481772 and Hirose FH34SRJ-18S-0.5SH(50) are explicitly RoHS3 compliant. The GCT FFC2B35-17-G is RoHS3 compliant. Compliance documentation should be verified with the supplier for the specific production lot.

Q: What is the impact of different locking mechanisms on compatibility?

A: The original part uses a slide lock mechanism. The Molex 0545481772 maintains this design. The GCT part uses a flip lock, and the Hirose part uses a rotary lock with backlock. These variations affect the user interface for cable insertion and removal but do not impact electrical or mechanical compatibility with the mating FFC, FPC cable.

Q: Can these substitutes be used interchangeably in the same design?

A: No. Each substitute has distinct mechanical and electrical characteristics. The Molex 0545481772 is the only direct replacement. The GCT and Hirose parts require design evaluation and potential PCB modification before implementation.