Equivalent & Substitute Parts for Molex 0528932133

Part Overview

The Molex 0528932133 is a 21-position FPC (Flat Flexible Connector) with bottom contacts, 0.5mm pitch, and right-angle surface mount configuration. This connector is designed for applications requiring flexible cable interconnection with zero insertion force (ZIF) operation. The product is currently obsolete, making equivalent substitute parts necessary for ongoing production support and design updates. The connector features a flip lock mechanism, solder retention, and operates across -40°C to 85°C with a 50V voltage rating.

Key Parameters

Parameter	Value
Manufacturer Part Number	0528932133
Manufacturer	Molex
Category	FFC, FPC (Flat Flexible) Connectors
Number of Positions	21
Pitch	0.020" (0.50mm)
Mounting Type	Surface Mount, Right Angle
Connector/Contact Type	Contacts, Bottom
Height Above Board	0.079" (2.00mm)
Voltage Rating	50V
Operating Temperature	-40°C ~ 85°C
Current Rating	0.5A
Locking Feature	Flip Lock
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0528932133 is determined by the following critical parameters:

Position Count: 21 positions (exact match required)
Pitch: 0.020" (0.50mm) (exact match required)
Mounting Configuration: Surface mount, right-angle orientation (exact match required)
Contact Arrangement: Bottom contacts (exact match required)
Height Above Board: 0.079" (2.00mm) (exact match required)
Voltage Rating: Minimum 50V (equal or higher acceptable)
Current Rating: Minimum 0.5A (equal or higher acceptable)
Locking Mechanism: Flip lock (exact match required)
Flammability Rating: UL94 V-0 (exact match required)
RoHS Compliance: ROHS3 compliant (exact match required)

The GCT FFC2B35-21-T meets all critical substitution criteria and is classified as an active product, providing long-term availability for replacement applications.

Parameter Comparison

Parameter	Molex 0528932133	GCT FFC2B35-21-T	Match Status
Number of Positions	21	21	Match
Pitch	0.020" (0.50mm)	0.020" (0.50mm)	Match
Mounting Type	Surface Mount, Right Angle	Surface Mount, Right Angle	Match
Connector/Contact Type	Contacts, Bottom	Contacts, Bottom	Match
Height Above Board	0.079" (2.00mm)	0.079" (2.00mm)	Match
Voltage Rating	50V	50V	Match
Operating Temperature	-40°C ~ 85°C	-25°C ~ 85°C	Partial (GCT has narrower low-temperature range)
Current Rating	0.5A	0.4A	Partial (GCT rated lower)
Locking Feature	Flip Lock	Flip Lock	Match
Material Flammability Rating	UL94 V-0	UL94 V-0	Match
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
Mating Cycles	20	30	GCT exceeds specification
Product Status	Obsolete	Active	GCT provides ongoing availability

Engineering Selection Recommendations

The GCT FFC2B35-21-T is the qualified substitute for the obsolete Molex 0528932133. Both connectors maintain identical mechanical and electrical specifications for the critical parameters: 21-position configuration, 0.5mm pitch, right-angle surface mount, bottom contact arrangement, and 2.00mm board height.

Both parts carry ROHS3 compliance and UL94 V-0 flammability certification, meeting regulatory requirements for equivalent applications. The GCT part's active product status ensures continued availability for production and design transitions.

Differences in operating temperature range (-25°C to 85°C for GCT versus -40°C to 85°C for Molex) and current rating (0.4A for GCT versus 0.5A for Molex) should be evaluated against specific application requirements. The GCT part's superior mating cycle rating (30 cycles versus 20 cycles) provides additional mechanical durability.

Frequently Asked Questions (FAQ)

Q: Can the GCT FFC2B35-21-T be used as a direct replacement for the Molex 0528932133?

A: Yes, the GCT FFC2B35-21-T meets all critical substitution parameters: identical position count (21), pitch (0.5mm), mounting configuration (surface mount right-angle), contact arrangement (bottom), board height (2.00mm), voltage rating (50V), locking mechanism (flip lock), and compliance certifications (ROHS3, UL94 V-0).

Q: What are the differences between these two connectors?

A: The primary differences are: (1) Operating temperature range—GCT operates from -25°C to 85°C versus Molex -40°C to 85°C; (2) Current rating—GCT is rated 0.4A versus Molex 0.5A; (3) Mating cycles—GCT supports 30 cycles versus Molex 20 cycles; (4) Product status—GCT is active while Molex is obsolete.

Q: Should I consider the lower current rating of the GCT part?

A: The GCT part's 0.4A rating should be evaluated against your application's actual current requirements. If your design operates below 0.4A, the GCT part is suitable. If your application requires the full 0.5A capacity, the current rating difference must be addressed in your design review.

Q: Is the narrower operating temperature range of the GCT part a concern?

A: The GCT part's -25°C lower temperature limit should be evaluated against your application environment. If your system operates above -25°C, the GCT part is compatible. If your application requires operation at -40°C, the temperature range difference must be addressed.

Q: What packaging is available for the GCT FFC2B35-21-T?

A: The GCT FFC2B35-21-T is supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes.

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