FH19SC-28S-0.5SH(09) Equivalent & Substitute Parts

Part Overview

The FH19SC-28S-0.5SH(09) is a 28-position FFC/FPC connector manufactured by Hirose Electric Co Ltd, designed for surface mount, right-angle applications with 0.5mm pitch contacts. This connector features bottom-contact configuration, flip lock mechanism, and solder termination suitable for flat flexible cable assemblies. The product is currently obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications.

Substiute Parts

FH19SC-28S-0.5SH(09)

Hirose Electric Co LtdIn Stock: 955FH19SC-28S-0.5SH(09) Datasheet

Current PartRFQ

FFC2B35-28-G

GCTIn Stock: 1244FFC2B35-28-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FH19SC-28S-0.5SH(09) is determined by the following critical parameters:

• Position Count: 28 positions (fixed requirement)
• Pitch: 0.020" (0.50mm) (fixed requirement)
• Mounting Configuration: Surface mount, right-angle orientation (fixed requirement)
• Contact Arrangement: Bottom contacts (fixed requirement)
• Termination Method: Solder termination (fixed requirement)
• Voltage Rating: Minimum 50V
• Current Rating: Minimum 0.5A
• Locking Mechanism: Flip lock feature
• Material Compliance: UL94 V-0 flammability rating, RoHS compliance

The substitute part FFC2B35-28-G meets the core positional, pitch, mounting, and termination requirements. Variations in height above board, operating temperature range, current rating, and mating cycles are secondary parameters that may affect specific application suitability but do not preclude functional substitution within the defined electrical and mechanical envelope.

Parameter Comparison

Engineering Selection Recommendations

The FFC2B35-28-G from GCT is an active substitute for the obsolete FH19SC-28S-0.5SH(09). Both connectors share identical core specifications: 28-position configuration, 0.5mm pitch, surface mount right-angle mounting, bottom-contact solder termination, and 50V voltage rating. Both meet UL94 V-0 flammability requirements and MSL 1 moisture sensitivity classification.

Key differences requiring evaluation:

• Height Above Board: The FFC2B35-28-G is 1.05mm taller (2.00mm vs 0.95mm). PCB layout clearance must be verified for space-constrained applications.
• Operating Temperature: The FFC2B35-28-G operates from -25°C to 85°C, compared to -55°C to 85°C for the original. Applications requiring sub-zero operation below -25°C are not suitable for this substitute.
• Current Rating: The FFC2B35-28-G is rated at 0.4A versus 0.5A for the original. Applications requiring the full 0.5A rating require current load analysis.
• Mating Cycles: The FFC2B35-28-G supports 30 cycles versus 20 for the original, providing improved durability for high-cycle applications.
• RoHS Compliance: The FFC2B35-28-G meets ROHS3 standards, exceeding the RoHS compliance of the original part.

The FFC2B35-28-G is suitable for applications where the height increase, reduced temperature range, and lower current rating do not conflict with design requirements.

Frequently Asked Questions (FAQ)

Q: Can FFC2B35-28-G directly replace FH19SC-28S-0.5SH(09) in existing designs?

A: Direct replacement is possible if the application does not require operation below -25°C, does not demand the full 0.5A current rating, and has sufficient PCB clearance for the additional 1.05mm height above board. The identical pitch, position count, mounting configuration, and termination method ensure mechanical and electrical compatibility within these constraints.

Q: What is the significance of the 0.1A current rating difference?

A: The FFC2B35-28-G is rated at 0.4A maximum continuous current, while the original is rated at 0.5A. For applications operating at or near 0.5A, the substitute part may not be suitable. Applications operating below 0.4A are unaffected by this difference.

Q: Does the increased height above board affect PCB layout?

A: Yes. The FFC2B35-28-G extends 1.05mm higher above the PCB (2.00mm total) compared to the original (0.95mm total). PCB designs with limited vertical clearance, such as those with stacked components or confined enclosures, must be evaluated for compatibility.

Q: Are both connectors compatible with the same flat flexible cable?

A: Both connectors feature identical 0.5mm pitch, 28-position bottom-contact configuration, and 0.30mm FFC thickness specifications. Cable compatibility is determined by these matching parameters. However, the different heights above board may affect cable routing and strain relief considerations in the assembly.

Q: What is the difference between RoHS and ROHS3 compliance?

A: Both parts meet RoHS environmental compliance standards. ROHS3 represents a more recent revision of the RoHS directive with updated substance restrictions. The FFC2B35-28-G's ROHS3 compliance exceeds the original part's RoHS compliance, ensuring compatibility with current regulatory requirements.

Q: Why does the substitute have higher mating cycle rating?

A: The FFC2B35-28-G supports 30 mating cycles compared to 20 for the original. This indicates improved mechanical durability of the flip lock mechanism and contact retention features. Applications requiring frequent connector mating benefit from this enhanced specification.