Molex 0545501271 FFC/FPC Connector - Equivalent & Substitute Parts

Part Overview

The Molex 0545501271 is a 12-position FFC/FPC connector from the Easy-On 54550 series, designed for surface mount, right-angle applications with 0.50mm pitch contacts. This connector features zero insertion force (ZIF) operation, slide lock retention, and solder termination for flat flexible cable assemblies.

The 0545501271 is classified as obsolete. Identifying compatible substitute parts is essential for ongoing production support, design updates, and inventory management where this connector is specified in existing applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	0545501271
Manufacturer	Molex
Category	FFC, FPC (Flat Flexible) Connectors
Series	Easy-On 54550
Number of Positions	12
Pitch	0.020" (0.50mm)
Mounting Type	Surface Mount, Right Angle
Connector/Contact Type	Contacts, Top
Termination	Solder
Voltage Rating	50V
Current Rating	0.5A
Operating Temperature Range	-20°C ~ 85°C
Locking Feature	Slide Lock
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for FFC/FPC connectors is determined by strict alignment of electrical and mechanical parameters. The following criteria must be met for a part to serve as a direct substitute:

Critical Parameters for Substitution:

Number of positions: 12
Pitch: 0.020" (0.50mm)
Mounting type: Surface mount, right angle
Connector/contact type: Contacts, top
Termination method: Solder
Voltage rating: 50V minimum
Current rating: 0.5A minimum
Locking feature: Slide lock
Series compatibility: Easy-On 54550

The Molex 0545501272 meets all substitution criteria. Both parts share identical electrical specifications, mechanical dimensions, and functional features. The primary difference is product status and packaging configuration.

Parameter Comparison

Parameter	0545501271 (Main Part)	0545501272 (Substitute)
Manufacturer	Molex	Molex
Series	Easy-On 54550	Easy-On 54550
Number of Positions	12	12
Pitch	0.020" (0.50mm)	0.020" (0.50mm)
Mounting Type	Surface Mount, Right Angle	Surface Mount, Right Angle
Connector/Contact Type	Contacts, Top	Contacts, Top
Termination	Solder	Solder
FFC/FCB Thickness	0.30mm	0.30mm
Height Above Board	0.047" (1.20mm)	0.047" (1.20mm)
Locking Feature	Slide Lock	Slide Lock
Cable End Type	Straight, Tapered	Straight, Tapered
Contact Material	Phosphor Bronze	Phosphor Bronze
Contact Finish	Gold	Gold
Housing Material	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
Actuator Material	Polyphenylene Sulfide (PPS)	Polyphenylene Sulfide (PPS)
Features	Solder Retention, Zero Insertion Force (ZIF)	Solder Retention, Zero Insertion Force (ZIF)
Voltage Rating	50V	50V
Current Rating	0.5A	0.5A
Operating Temperature Range	-20°C ~ 85°C	-40°C ~ 85°C
Material Flammability Rating	UL94 V-0	UL94 V-0
Mating Cycles	20	20
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Obsolete	Active
Packaging	Bulk	Tape & Reel (TR)

Engineering Selection Recommendations

The Molex 0545501272 is the direct substitute for the obsolete 0545501271. Both connectors are functionally and mechanically identical across all critical parameters. The 0545501272 is currently in active production status with significantly higher inventory availability (18,618 pcs vs. 980 pcs).

The 0545501272 offers an extended lower operating temperature limit (-40°C vs. -20°C), providing broader environmental compatibility. Both parts maintain identical electrical ratings, compliance certifications (ROHS3, REACH Unaffected), and reliability specifications.

For new designs or production continuity, the 0545501272 is the recommended selection. The transition from 0545501271 to 0545501272 requires no design modifications, as all mechanical and electrical interfaces remain unchanged.

Frequently Asked Questions (FAQ)

Q: Can the 0545501272 be used as a direct replacement for the 0545501271 in existing PCB assemblies?

A: Yes. Both connectors share identical mechanical dimensions, pitch, mounting orientation, and electrical specifications. No PCB layout modifications are required for substitution.

Q: What is the difference between the two part numbers?

A: The primary differences are product status and packaging. The 0545501271 is obsolete and supplied in bulk packaging, while the 0545501272 is active production and supplied in tape & reel format. The 0545501272 also supports an extended lower operating temperature range (-40°C vs. -20°C).

Q: Are there any compatibility concerns with flat flexible cable assemblies?

A: No. Both connectors accept identical FFC/FPC cable specifications: 0.30mm thickness, 0.50mm pitch, straight tapered cable ends. Cable assemblies designed for the 0545501271 are fully compatible with the 0545501272.

Q: Does the tape & reel packaging of the 0545501272 affect assembly compatibility?

A: No. Tape & reel packaging is a supply format only and does not affect the connector's electrical or mechanical performance. Assembly processes remain identical.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the 0545501271 and 0545501272 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the significance of the extended temperature range on the 0545501272?

A: The 0545501272 supports operation from -40°C to 85°C, compared to -20°C to 85°C for the 0545501271. This extended lower temperature capability provides additional environmental flexibility for applications requiring broader thermal performance.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message