F90800021 8 MHz Crystal 18pF SMD Equivalent & Substitute Parts

Part Overview

The F90800021 is an 8 MHz fundamental mode crystal manufactured by Diodes Incorporated in the SaRonix-eCera™ F9 series. This component is specified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The part is a 2-SMD, no-lead surface mount crystal with 18pF load capacitance and 100 Ohms equivalent series resistance, designed for applications requiring precise 8 MHz frequency generation within industrial and commercial temperature ranges.

Substiute Parts

F90800021

Diodes IncorporatedIn Stock: 878F90800021 Datasheet

Current PartRFQ

ABM3-8.000MHZ-D2Y-T

Abracon LLCIn Stock: 27425ABM3-8.000MHZ-D2Y-T Datasheet

MFR RecommendedRFQ

ECS-080-18-23A-JGN-TR

ECS Inc.In Stock: 24431ECS-080-18-23A-JGN-TR Datasheet

MFR RecommendedRFQ

H130A-8.000-18-2030-EXT-TR

Raltron ElectronicsIn Stock: 6274H130A-8.000-18-2030-EXT-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the F90800021 is determined by strict equivalence across the following critical parameters:

• Frequency: 8 MHz (exact match required)
• Frequency Tolerance: ±20ppm (exact match required)
• Load Capacitance: 18pF (exact match required)
• Operating Mode: Fundamental (exact match required)
• Operating Temperature Range: -40°C to 85°C (exact match required)
• Package / Case: 2-SMD, No Lead (exact match required)
• Mounting Type: Surface Mount (exact match required)

The following parameters are allowed to vary within acceptable engineering tolerances for substitution:

• ESR (Equivalent Series Resistance): 80–140 Ohms (variation acceptable within circuit design margins)
• Physical Dimensions: Minor variations in length, width, and height permitted provided mounting footprint compatibility is maintained
• Product Status: Active status preferred over obsolete
• Compliance Certifications: ROHS3 Compliant acceptable as equivalent to RoHS Compliant

All three substitute parts meet these criteria and are direct functional equivalents to the F90800021.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are functionally equivalent to the F90800021 and meet the critical electrical and mechanical parameters required for direct substitution. Selection among these alternatives should be based on the following factors:

ABM3-8.000MHZ-D2Y-T (Abracon LLC): This part maintains identical physical dimensions (5.00mm x 3.20mm) to the original F90800021, ensuring seamless PCB layout compatibility. The part is in active production status with the highest inventory availability (27,400 units). ESR of 140 Ohms is within acceptable tolerance. ROHS3 compliance and REACH Affected status meet current regulatory requirements.

ECS-080-18-23A-JGN-TR (ECS Inc.): This part offers the lowest ESR specification at 80 Ohms and the lowest seated height at 1.10mm, providing potential advantages in high-frequency stability and compact assembly applications. Physical dimensions are slightly larger (6.00mm x 4.60mm). The part is in active production with strong inventory availability (24,414 units). ROHS3 compliance and REACH Unaffected status are provided.

H130A-8.000-18-2030-EXT-TR (Raltron Electronics): This part maintains identical physical dimensions (5.00mm x 3.20mm) to the original F90800021 with the lowest seated height (1.10mm). ESR of 85 Ohms provides a middle-ground specification. The part is in active production status with adequate inventory (6,212 units). ROHS3 compliance and REACH Unaffected status are provided.

Frequently Asked Questions (FAQ)

Q: Can the ABM3-8.000MHZ-D2Y-T be used as a direct replacement for the F90800021?

A: Yes. Both parts share identical frequency (8 MHz), frequency tolerance (±20ppm), load capacitance (18pF), operating temperature range (-40°C to 85°C), and package type (2-SMD, No Lead). Physical dimensions are identical (5.00mm x 3.20mm). The ESR difference (140 Ohms vs. 100 Ohms) is within acceptable circuit design margins for most applications.

Q: What is the significance of ESR variation among the substitute parts?

A: ESR (Equivalent Series Resistance) affects crystal oscillator startup time and power consumption. The F90800021 specifies 100 Ohms. Substitute parts range from 80 to 140 Ohms. All values remain within typical design tolerances for 8 MHz fundamental mode crystals. Circuit design verification is recommended if ESR-sensitive applications are involved.

Q: Are there physical footprint compatibility concerns with the ECS-080-18-23A-JGN-TR?

A: The ECS-080-18-23A-JGN-TR has slightly larger dimensions (6.00mm x 4.60mm) compared to the F90800021 (5.00mm x 3.20mm). PCB layout verification is necessary to confirm mounting pad compatibility. The seated height is lower (1.10mm vs. 1.35mm), which may provide assembly advantages in space-constrained designs.

Q: Which substitute part offers the best long-term availability?

A: The ABM3-8.000MHZ-D2Y-T (Abracon LLC) and ECS-080-18-23A-JGN-TR (ECS Inc.) both maintain active production status with high inventory levels (27,400 and 24,414 units respectively). Both manufacturers are established suppliers with consistent product availability. The H130A-8.000-18-2030-EXT-TR (Raltron Electronics) is also active but with lower inventory (6,212 units).

Q: Do all substitute parts meet current RoHS and REACH compliance requirements?

A: All three substitute parts are ROHS3 Compliant, meeting current regulatory standards. REACH status varies: ABM3 is REACH Affected, while ECS-080-18-23A-JGN-TR and H130A-8.000-18-2030-EXT-TR are REACH Unaffected. Compliance verification with your specific regulatory requirements is recommended.

Q: Can these parts be used interchangeably in existing designs without circuit modification?

A: Yes, for most applications. All parts meet identical electrical specifications for frequency, tolerance, load capacitance, and operating temperature. Physical dimensions are compatible with standard 2-SMD crystal footprints. Circuit-level verification is recommended only if the design is sensitive to ESR variations or if the slightly larger ECS part requires PCB layout confirmation.