FH28D-55S-0.5SH(98) Equivalent & Substitute Parts

Part Overview

The FH28D-55S-0.5SH(98) is a 55-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, rotary locking mechanism, and zero insertion force (ZIF) operation. The part is currently classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and procurement planning.

Key Parameters

Parameter	Value
Manufacturer Part Number	FH28D-55S-0.5SH(98)
Manufacturer	Hirose Electric Co Ltd
Category	FFC, FPC (Flat Flexible) Connectors
Series	FH28
Number of Positions	55
Pitch	0.020" (0.50mm)
Mounting Type	Surface Mount, Right Angle
Connector/Contact Type	Contacts, Bottom
Voltage Rating	50V
Current Rating	0.5A
Operating Temperature	-40°C ~ 105°C
Locking Feature	Rotary Lock
Features	Solder Retention, Zero Insertion Force (ZIF)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the FH28D-55S-0.5SH(98) is determined by strict equivalence across the following critical parameters:

Series and Base Product Number: FH28 series designation
Position Count: 55 positions
Pitch: 0.020" (0.50mm)
Mounting Configuration: Surface mount, right-angle orientation
Contact Configuration: Bottom contacts
Electrical Ratings: 50V voltage, 0.5A current
Mechanical Features: Rotary lock, ZIF operation
Material Specifications: LCP housing and actuator, halogen-free construction
Environmental Compliance: UL94 V-0 flammability rating, RoHS compliance

The three identified substitute parts—FH28-55S-0.5SH(05), FH28-55S-0.5SH(10), and FH28D-55S-0.5SH(05)—maintain identical electrical and mechanical specifications. Differences exist only in packaging format (cut tape versus tape & reel) and product status (obsolete versus active).

Parameter Comparison

Parameter	FH28D-55S-0.5SH(98)	FH28-55S-0.5SH(05)	FH28-55S-0.5SH(10)	FH28D-55S-0.5SH(05)
Manufacturer	Hirose Electric Co Ltd	Hirose Electric Co Ltd	Hirose Electric Co Ltd	Hirose Electric Co Ltd
Series	FH28	FH28	FH28	FH28
Number of Positions	55	55	55	55
Pitch	0.020" (0.50mm)	0.020" (0.50mm)	0.020" (0.50mm)	0.020" (0.50mm)
Mounting Type	Surface Mount, Right Angle	Surface Mount, Right Angle	Surface Mount, Right Angle	Surface Mount, Right Angle
Connector/Contact Type	Contacts, Bottom	Contacts, Bottom	Contacts, Bottom	Contacts, Bottom
Voltage Rating	50V	50V	50V	50V
Current Rating	0.5A	0.5A	0.5A	0.5A
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Locking Feature	Rotary Lock	Rotary Lock	Rotary Lock	Rotary Lock
Features	Solder Retention, ZIF	Solder Retention, ZIF	Solder Retention, ZIF	Solder Retention, ZIF
Housing Material	LCP, Halogen Free	LCP, Halogen Free	LCP, Halogen Free	LCP, Halogen Free
Actuator Material	LCP, Halogen Free	LCP, Halogen Free	LCP, Halogen Free	LCP, Halogen Free
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	RoHS Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active
Packaging	Cut Tape (CT)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

All three substitute parts maintain full electrical and mechanical compatibility with the FH28D-55S-0.5SH(98). Selection among substitutes should be based on the following criteria:

Product Status: FH28-55S-0.5SH(05), FH28-55S-0.5SH(10), and FH28D-55S-0.5SH(05) are all classified as active products, providing assured long-term availability compared to the obsolete main part.

Compliance Certifications: All substitute parts maintain RoHS compliance and UL94 V-0 flammability rating. FH28-55S-0.5SH(05) carries ROHS3 compliance designation, indicating alignment with the most current regulatory requirements.

Packaging Format: FH28-55S-0.5SH(05) and FH28-55S-0.5SH(10) are supplied in tape & reel format, suitable for automated assembly processes. FH28D-55S-0.5SH(05) is also supplied in tape & reel format. The original FH28D-55S-0.5SH(98) was supplied in cut tape format.

Inventory Availability: FH28-55S-0.5SH(05) offers 2020 units in stock, FH28D-55S-0.5SH(05) offers 1641 units, and FH28-55S-0.5SH(10) offers 942 units.

Frequently Asked Questions (FAQ)

Q: Can FH28-55S-0.5SH(05), FH28-55S-0.5SH(10), and FH28D-55S-0.5SH(05) be used interchangeably with FH28D-55S-0.5SH(98)?

A: Yes. All four parts share identical electrical specifications (50V, 0.5A), mechanical configuration (55 positions, 0.5mm pitch, surface mount right-angle), contact arrangement (bottom contacts), and locking mechanism (rotary lock with ZIF). Functional compatibility is complete.

Q: What is the difference between the substitute parts?

A: The primary differences are product status and packaging. FH28-55S-0.5SH(05), FH28-55S-0.5SH(10), and FH28D-55S-0.5SH(05) are active products supplied in tape & reel packaging, while FH28D-55S-0.5SH(98) is obsolete and was supplied in cut tape format. All other specifications are identical.

Q: Why is the original part marked as obsolete?

A: The FH28D-55S-0.5SH(98) is classified as obsolete, indicating it is no longer in active production. The substitute parts represent the current active product offerings from Hirose Electric Co Ltd within the FH28 series.

Q: Are there any compliance differences between the substitute parts?

A: All parts maintain RoHS compliance and UL94 V-0 flammability rating. FH28-55S-0.5SH(05) carries ROHS3 compliance, representing the most current regulatory alignment.

Q: Does packaging format affect electrical or mechanical performance?

A: No. Packaging format (cut tape versus tape & reel) affects only procurement and assembly logistics, not electrical or mechanical performance. All parts deliver identical functional characteristics.

Q: What is the moisture sensitivity level for these connectors?

A: All parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

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