FW4800010Z 48 MHz Crystal Equivalent & Substitute Parts

Part Overview

The FW4800010Z is a 48 MHz fundamental mode crystal manufactured by Diodes Incorporated, part of the SaRonix-eCera™ FW series. This surface mount crystal is specified for 10pF load capacitance with 80 Ohms equivalent series resistance (ESR) in a 4-SMD, No Lead package measuring 2.00mm × 1.60mm. The part is ROHS3 compliant and carries an active product status. Substitute parts are identified when equivalent electrical performance can be maintained within the specified frequency, stability, tolerance, and operating temperature parameters while accommodating different load capacitance and ESR values in compatible package configurations.

Substiute Parts

FW4800010Z

Diodes IncorporatedIn Stock: 750FW4800010Z Datasheet

Current PartRFQ

ABM11W-48.0000MHZ-7-D1X-T3

Abracon LLCIn Stock: 15958ABM11W-48.0000MHZ-7-D1X-T3 Datasheet

MFR RecommendedRFQ

ABM11W-48.0000MHZ-8-D1X-T3

Abracon LLCIn Stock: 1613ABM11W-48.0000MHZ-8-D1X-T3 Datasheet

MFR RecommendedRFQ

ABM12W-48.0000MHZ-7-D1X-T3

Abracon LLCIn Stock: 739ABM12W-48.0000MHZ-7-D1X-T3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FW4800010Z is determined by maintaining equivalence across the following critical parameters:

• Frequency: All substitutes must operate at 48 MHz
• Frequency Stability & Tolerance: All substitutes must meet ±20ppm stability and ±10ppm tolerance specifications
• Operating Mode: All substitutes must operate in fundamental mode
• Operating Temperature Range: All substitutes must support -40°C ~ 85°C operation
• Package Type: All substitutes must use 4-SMD, No Lead surface mount configuration
• Compliance: All substitutes must maintain ROHS3 compliance

Load capacitance and ESR values may vary within acceptable ranges provided the circuit design accommodates the different electrical characteristics. The ABM11W and ABM12W series from Abracon LLC meet these substitution criteria with load capacitance values of 7pF or 8pF and ESR values of 40 Ohms or 50 Ohms, representing lower values than the original specification.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts maintain active product status and ROHS3 compliance equivalent to the FW4800010Z. The ABM11W series (both 7pF and 8pF variants) and ABM12W series (7pF variant) are qualified alternatives based on matching frequency, stability, tolerance, operating temperature range, and package configuration specifications.

Selection between substitute options should account for load capacitance and ESR differences. The ABM11W-48.0000MHZ-7-D1X-T3 and ABM11W-48.0000MHZ-8-D1X-T3 offer lower ESR at 40 Ohms compared to the original 80 Ohms specification. The ABM12W-48.0000MHZ-7-D1X-T3 provides a mid-range ESR of 50 Ohms with a smaller physical footprint (1.60mm × 1.20mm versus 2.00mm × 1.60mm) and reduced height (0.40mm versus 0.55mm).

Frequently Asked Questions (FAQ)

Q: Can the ABM11W or ABM12W series crystals directly replace the FW4800010Z without circuit modification?

A: Direct replacement depends on circuit design tolerance for load capacitance and ESR variations. The substitute parts operate at identical frequency, stability, and tolerance specifications within the same operating temperature range. However, load capacitance values differ (7pF or 8pF versus 10pF) and ESR values are lower (40 Ohms or 50 Ohms versus 80 Ohms). Circuit design must accommodate these electrical parameter differences.

Q: What is the significance of load capacitance differences between the FW4800010Z and substitute parts?

A: Load capacitance specifies the external capacitive load the crystal is designed to operate into. The FW4800010Z is specified for 10pF load capacitance, while substitutes operate at 7pF or 8pF. The oscillator circuit design determines the actual load capacitance presented to the crystal. Substitution is valid when the circuit design can accommodate the lower load capacitance values of the alternative parts.

Q: How do ESR differences affect crystal performance?

A: Equivalent Series Resistance (ESR) represents the crystal's internal resistance and affects oscillator startup characteristics and power consumption. The FW4800010Z specifies 80 Ohms ESR, while substitutes offer 40 Ohms or 50 Ohms. Lower ESR values generally facilitate easier oscillator startup and reduce power consumption. Circuit design must verify compatibility with the lower ESR characteristics of substitute parts.

Q: Are the ABM12W series crystals compatible with the same PCB footprint as the FW4800010Z?

A: The ABM12W-48.0000MHZ-7-D1X-T3 uses a smaller footprint (1.60mm × 1.20mm) compared to the FW4800010Z (2.00mm × 1.60mm), both in 4-SMD, No Lead configuration. Physical compatibility with existing PCB layouts must be verified. The reduced height (0.40mm versus 0.55mm) may provide assembly advantages in space-constrained applications.

Q: Do all substitute parts maintain the same compliance certifications as the FW4800010Z?

A: All substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance profile of the FW4800010Z. All parts carry EAR99 ECCN classification and 8541.60.0060 HTSUS code.