FD2000049 Equivalent & Substitute Parts

Part Overview

The FD2000049 is a 20 MHz XO (Standard) CMOS Oscillator manufactured by Diodes Incorporated, designed for applications requiring a stable crystal oscillator with enable/disable functionality. This Surface Mount Device (SMD) operates at 3.3V supply voltage with ±25ppm frequency stability and is housed in a compact 4-SMD, No Lead package measuring 5.00mm x 3.20mm. The part is Active status and ROHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

FD2000049

Diodes IncorporatedIn Stock: 1160FD2000049 Datasheet

Current PartRFQ

FD2000046

Diodes IncorporatedIn Stock: 1150FD2000046 Datasheet

MFR RecommendedRFQ

SXO53C3C271-20.000M

Suntsu Electronics, Inc.In Stock: 4181SXO53C3C271-20.000M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FD2000049 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Electrical Compatibility Criteria:

• Frequency: 20 MHz (exact match required)
• Output Type: CMOS (exact match required)
• Supply Voltage: 3.3V (exact match required)
• Operating Temperature Range: -20°C ~ 70°C (exact match required)
• Function: Enable/Disable (exact match required)

Mechanical Compatibility Criteria:

• Package Type: 4-SMD, No Lead (exact match required)
• Package Dimensions: 5.00mm x 3.20mm (exact match required)
• Mounting Type: Surface Mount (exact match required)

Allowable Variations:

• Frequency Stability: ±25ppm to ±50ppm (tighter or equal tolerance acceptable)
• Maximum Supply Current: Up to 16mA (within operational limits)
• Maximum Seated Height: Up to 1.40mm (within PCB assembly constraints)
• Disable Mode Current: Specified or unspecified (both acceptable)

Compliance Requirements:

• RoHS Status: ROHS3 Compliant (mandatory)
• Product Status: Active (mandatory)

Parameter Comparison

Engineering Selection Recommendations

All three parts—FD2000049, FD2000046, and SXO53C3C271-20.000M—are qualified substitutes based on electrical and mechanical compatibility. Selection should be based on the following factors:

FD2000049 (Primary Part): Select when ±25ppm frequency stability is required and maximum seated height of 1.30mm is a design constraint. Manufactured by Diodes Incorporated.

FD2000046 (Diodes Incorporated Substitute): Select as an alternative from the same manufacturer when ±50ppm frequency stability is acceptable for the application. Identical electrical and mechanical specifications to FD2000049 except for relaxed frequency stability tolerance.

SXO53C3C271-20.000M (Suntsu Electronics Substitute): Select when sourcing from an alternative manufacturer is required. Offers ±25ppm frequency stability matching the primary part. Maximum seated height of 1.40mm requires verification against PCB assembly clearance specifications. Maximum supply current of 16mA is within acceptable operational limits.

All parts maintain ROHS3 compliance and Active product status, ensuring regulatory conformance and long-term availability.

Frequently Asked Questions (FAQ)

Q: Can FD2000046 be used as a direct replacement for FD2000049?

A: Yes. FD2000046 is electrically and mechanically compatible. The primary difference is frequency stability of ±50ppm versus ±25ppm. Applications tolerating ±50ppm frequency deviation can use FD2000046 without design modification.

Q: What is the key difference between FD2000049 and SXO53C3C271-20.000M?

A: Both parts share identical electrical specifications and frequency stability (±25ppm). The SXO53C3C271-20.000M has a maximum seated height of 1.40mm compared to 1.30mm for FD2000049. Verify PCB assembly clearance before substitution. The SXO53C3C271-20.000M is manufactured by Suntsu Electronics instead of Diodes Incorporated.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 4-SMD, No Lead package with identical 5.00mm x 3.20mm footprint dimensions and Surface Mount mounting type. PCB layout and reflow profiles remain unchanged.

Q: Which part should be selected for applications with tight frequency tolerance requirements?

A: Both FD2000049 and SXO53C3C271-20.000M offer ±25ppm frequency stability. FD2000046 offers ±50ppm stability and is suitable only for applications with relaxed frequency tolerance specifications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. FD2000049, FD2000046, and SXO53C3C271-20.000M are all ROHS3 compliant and meet regulatory requirements for restricted substance use.

Q: What is the impact of the 0.10mm height difference between FD2000049 and SXO53C3C271-20.000M?

A: The SXO53C3C271-20.000M maximum seated height of 1.40mm is 0.10mm taller than FD2000049 at 1.30mm. Verify this dimension against PCB assembly specifications, solder reflow profiles, and any height-constrained applications before substitution.