Molex 0545501233 FFC/FPC Connector - Equivalent & Substitute Parts

Part Overview

The Molex 0545501233 is a 12-position FFC/FPC connector from the Easy-On 54550 series, designed for surface mount right-angle applications with 0.5mm pitch. This connector features zero insertion force (ZIF) operation, slide lock mechanism, and solder termination for flat flexible cable assemblies.

The 0545501233 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for legacy systems utilizing this connector.

Substiute Parts

0545501233

MolexIn Stock: 59710545501233 Datasheet

Current PartRFQ

0545501234

MolexIn Stock: 9460545501234 Datasheet

MFR RecommendedRFQ

086212012340800A+

KYOCERA AVXIn Stock: 1010086212012340800A+ Datasheet

MFR RecommendedRFQ

687112149022

Würth ElektronikIn Stock: 5926687112149022 Datasheet

MFR RecommendedRFQ

FH34SRJ-12S-0.5SH(50)

Hirose Electric Co LtdIn Stock: 44214FH34SRJ-12S-0.5SH(50) Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0545501233 is determined by the following critical parameters:

• Position Count & Pitch: All substitute parts must maintain 12 positions at 0.5mm pitch to ensure mechanical and electrical compatibility with existing cable assemblies.
• Mounting Configuration: Surface mount, right-angle orientation is required for PCB layout compatibility.
• Electrical Ratings: Voltage rating of 50V and current rating of 0.5A establish the minimum electrical performance threshold.
• Operating Temperature Range: Minimum -40°C to 85°C operational capability.
• Termination Method: Solder termination is mandatory for assembly process compatibility.
• Compliance: ROHS3 compliance and RoHS certification are required for regulatory alignment.

Substitute parts are grouped into two categories based on connector contact orientation:

Category A - Top Contact Configuration (Direct Mechanical Substitutes): Parts with top-mounted contacts that provide direct form-fit-function replacement without PCB layout modification.

Category B - Alternative Contact Configurations (Design Consideration Required): Parts with bottom or dual contact configurations that require PCB layout evaluation but maintain electrical and mechanical compatibility through pitch and position alignment.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute - Molex 0545501234: The Molex 0545501234 is the manufacturer-recommended direct substitute. It maintains identical mechanical and electrical specifications to the 0545501233, including 12-position, 0.5mm pitch, top contact configuration, and slide lock mechanism. The primary distinction is product status: 0545501234 is active with documented mating cycle rating of 20 cycles. This part is available in Tape & Reel packaging and carries ROHS3 compliance certification. Selection of this part eliminates design modification requirements and ensures compatibility with existing cable assemblies.

Secondary Substitute - KYOCERA AVX 086212012340800A+: The KYOCERA AVX 086212012340800A+ maintains 12-position, 0.5mm pitch configuration with top contact orientation and slide lock mechanism. This part is active and ROHS3 compliant. The current rating is 0.4A, which is lower than the original 0.5A specification. This part is suitable for applications where the 0.4A current rating meets design requirements. Height above board is 2.00mm compared to 1.20mm for the original part, requiring PCB layout verification.

Alternative Substitute - Würth Elektronik 687112149022: The Würth Elektronik 687112149022 maintains 12-position, 0.5mm pitch with bottom contact configuration and flip lock mechanism. This part is active and ROHS3 compliant with extended operating temperature range to 105°C. The bottom contact orientation requires PCB layout modification compared to the top-contact original design. This part is suitable for new designs or redesigned assemblies where bottom-contact configuration is acceptable.

Alternative Substitute - Hirose FH34SRJ-12S-0.5SH(50): The Hirose FH34SRJ-12S-0.5SH(50) maintains 12-position, 0.5mm pitch with dual top and bottom contact configuration and rotary lock mechanism. This part is active and RoHS compliant with extended operating temperature range to 105°C and lower temperature limit to -55°C. The dual contact configuration and rotary lock mechanism represent a different mechanical interface requiring PCB layout and assembly process evaluation.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0545501234 be used as a direct replacement for the 0545501233?

A: Yes. The Molex 0545501234 is the manufacturer-recommended substitute with identical electrical and mechanical specifications. Both parts feature 12 positions at 0.5mm pitch, top contact configuration, slide lock mechanism, 50V voltage rating, 0.5A current rating, and -40°C to 85°C operating temperature range. The primary difference is product status: 0545501234 is active production while 0545501233 is obsolete. No PCB layout or assembly process modifications are required.

Q: What is the impact of the KYOCERA AVX 086212012340800A+ having a 0.4A current rating versus the original 0.5A?

A: The KYOCERA AVX part has a lower current rating of 0.4A compared to the original 0.5A specification. This part is suitable only for applications where the maximum current requirement does not exceed 0.4A. If the design requires 0.5A current capability, this part is not appropriate. Verify actual circuit current requirements before selection.

Q: Why does the Würth Elektronik 687112149022 have a different contact configuration?

A: The Würth Elektronik 687112149022 features bottom contact configuration instead of top contacts. This design difference requires PCB layout modification to accommodate the bottom-mounted contact interface. The part maintains 12-position, 0.5mm pitch compatibility but is not a direct mechanical substitute without redesign. This part is suitable for new designs or PCB redesign projects.

Q: What are the packaging differences among the substitute parts?

A: The Molex 0545501234 is supplied in Tape & Reel (TR) packaging. The KYOCERA AVX 086212012340800A+ is supplied in Tape & Reel (TR) packaging. The Würth Elektronik 687112149022 is supplied in Cut Tape (CT) & Digi-Reel® packaging. The Hirose FH34SRJ-12S-0.5SH(50) is supplied in Cut Tape (CT) & Digi-Reel® packaging. Packaging selection impacts assembly process compatibility and inventory management.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts carry RoHS compliance certification. The Molex 0545501233 (original), Molex 0545501234, KYOCERA AVX 086212012340800A+, and Würth Elektronik 687112149022 are ROHS3 compliant. The Hirose FH34SRJ-12S-0.5SH(50) is RoHS compliant. All parts meet regulatory requirements for RoHS-restricted substance limitations.

Q: What is the height difference between the original part and substitutes?

A: The Molex 0545501233 has a height above board of 1.20mm. The Molex 0545501234 maintains the same 1.20mm height. The KYOCERA AVX 086212012340800A+ has a height of 2.00mm. The Würth Elektronik 687112149022 has a height of 2.20mm. The Hirose FH34SRJ-12S-0.5SH(50) has a height of 1.00mm. Height differences may impact PCB clearance and assembly considerations.

Q: Which substitute part has the widest operating temperature range?

A: The Hirose FH34SRJ-12S-0.5SH(50) has the widest operating temperature range of -55°C to 105°C. The Würth Elektronik 687112149022 operates from -40°C to 105°C. The Molex parts (0545501233 and 0545501234) and KYOCERA AVX part operate from -40°C to 85°C. Select based on specific application temperature requirements.