FL520WFMT1 Equivalent & Substitute Parts

Part Overview

The FL520WFMT1 is a 52 MHz crystal oscillator manufactured by Diodes Incorporated, part of the SaRonix-eCera™ FL series. This surface mount crystal is designed for applications requiring precise frequency generation with a load capacitance of 12pF and fundamental operating mode. The part is actively produced and widely used in consumer and industrial electronics. Substitute parts may be required due to inventory availability, supply chain optimization, or design revision requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

FL520WFMT1

Diodes IncorporatedIn Stock: 2142FL520WFMT1 Datasheet

Current PartRFQ

FW520WFMT1

Diodes IncorporatedIn Stock: 13929FW520WFMT1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The FL520WFMT1 can be substituted with the FW520WFMT1 based on the following critical parameters that determine electrical and mechanical compatibility:

Electrical Parameters (Must Match):

• Frequency: 52 MHz
• Frequency Tolerance: ±7ppm
• Load Capacitance: 12pF
• ESR: 30 Ohms
• Operating Temperature Range: -40°C ~ 100°C
• Frequency Stability: ±17ppm

Mechanical Parameters (Must Match):

• Package Type: 4-SMD, No Lead
• Mounting Type: Surface Mount

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The FW520WFMT1 meets all these criteria, making it a direct electrical and mechanical equivalent. The primary difference is the physical footprint size, with the FW520WFMT1 featuring a smaller 2.00mm x 1.60mm dimension compared to the FL520WFMT1's 3.20mm x 2.50mm dimension.

Parameter Comparison

Engineering Selection Recommendations

Both FL520WFMT1 and FW520WFMT1 are active products from Diodes Incorporated with identical electrical specifications and full ROHS3 compliance. Selection between these parts should be based on PCB layout constraints and available board space.

The FL520WFMT1 (3.20mm x 2.50mm) is suitable for applications with standard PCB footprint requirements and adequate board real estate. The FW520WFMT1 (2.00mm x 1.60mm) is the preferred choice for space-constrained designs, compact consumer electronics, and high-density PCB layouts. Both parts maintain the same electrical performance and environmental operating range, ensuring functional equivalence in circuit operation.

Frequently Asked Questions (FAQ)

Q: Can FW520WFMT1 replace FL520WFMT1 in existing designs?

A: Yes, the FW520WFMT1 is electrically equivalent to the FL520WFMT1. Both parts have identical frequency, tolerance, load capacitance, ESR, and operating temperature specifications. PCB layout modification is required due to the smaller footprint of the FW520WFMT1 (2.00mm x 1.60mm versus 3.20mm x 2.50mm).

Q: Are there any compliance differences between these parts?

A: No. Both FL520WFMT1 and FW520WFMT1 are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. Moisture sensitivity level is identical at MSL 1 (Unlimited) for both parts.

Q: What is the primary difference between FL520WFMT1 and FW520WFMT1?

A: The primary difference is the physical package size. The FW520WFMT1 features a smaller footprint (2.00mm x 1.60mm, 0.55mm height) compared to the FL520WFMT1 (3.20mm x 2.50mm, 0.78mm height). Electrical performance is identical.

Q: Can these parts be used interchangeably on the same PCB?

A: Direct PCB interchangeability requires matching footprint designs. The FW520WFMT1's smaller footprint cannot be used on a PCB designed for the FL520WFMT1 without layout modification. Conversely, the FL520WFMT1 can be used on a PCB designed for the FW520WFMT1 if adequate board space is available.

Q: What packaging format is available for both parts?

A: Both FL520WFMT1 and FW520WFMT1 are supplied in Tape & Reel (TR) packaging for automated assembly processes.