ASCSM-30.000MHZ-LR-T Equivalent & Substitute Parts

Part Overview

The ASCSM-30.000MHZ-LR-T is a 30 MHz MEMS-based XO (Standard) oscillator manufactured by Abracon LLC, featuring CMOS output with Enable/Disable functionality. This component operates across a wide supply voltage range of 1.7V to 3.6V and is housed in a compact 4-UFBGA/CSPBGA package measuring 1.79mm × 1.25mm. The product is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs requiring similar performance characteristics.

Substiute Parts

ASCSM-30.000MHZ-LR-T

Abracon LLCIn Stock: 966ASCSM-30.000MHZ-LR-T Datasheet

Current PartRFQ

ASCO-30.000MHZ-L-T3

Abracon LLCIn Stock: 928ASCO-30.000MHZ-L-T3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ASCSM-30.000MHZ-LR-T is determined by the following critical parameters:

• Frequency: 30 MHz (exact match required)
• Output Type: CMOS (exact match required)
• Function: Enable/Disable capability (exact match required)
• Operating Temperature Range: -40°C ~ 85°C (exact match required)
• Voltage Supply Range: Must accommodate the original 1.7V ~ 3.6V specification or be compatible with system design constraints
• Frequency Stability: ±25ppm or better (tighter tolerance acceptable)
• Package Type: Surface mount with compatible footprint dimensions
• Compliance: ROHS3 and REACH compliance maintained

The ASCO-30.000MHZ-L-T3 meets the core functional requirements of frequency, output type, function, and operating temperature. However, substitution requires evaluation of voltage supply compatibility and frequency stability differences.

Parameter Comparison

Engineering Selection Recommendations

The ASCO-30.000MHZ-L-T3 is an active product from the same manufacturer, ensuring continued availability and support. Both components maintain ROHS3 compliance and EAR99 export classification. The substitute part operates at a fixed 3.3V supply voltage, which is compatible with the original part's voltage range. The frequency stability specification of ±50ppm is broader than the original ±25ppm; systems requiring tighter stability must evaluate this difference against application requirements. The substitute uses a crystal-based resonator rather than MEMS technology, which may affect long-term frequency drift characteristics. Package dimensions are comparable, with the substitute being marginally smaller. Current consumption is slightly lower in the substitute part. PCB layout modifications may be required due to package type change from 4-UFBGA/CSPBGA to 4-SMD, No Lead.

Frequently Asked Questions (FAQ)

Q: Can the ASCO-30.000MHZ-L-T3 directly replace the ASCSM-30.000MHZ-LR-T without design changes?

A: Direct replacement requires verification of three factors: (1) PCB footprint compatibility between 4-UFBGA/CSPBGA and 4-SMD No Lead packages, (2) system tolerance of ±50ppm frequency stability versus the original ±25ppm, and (3) confirmation that fixed 3.3V operation meets system voltage requirements.

Q: What is the primary difference between MEMS and crystal-based oscillators in this comparison?

A: The main part uses MEMS (Micro-Electro-Mechanical Systems) resonator technology, while the substitute uses a crystal resonator. Both deliver the same 30 MHz frequency and CMOS output, but may exhibit different frequency drift characteristics over temperature and time.

Q: Is the frequency stability difference between ±25ppm and ±50ppm significant?

A: Significance depends on application requirements. For applications with strict frequency tolerance specifications, the broader ±50ppm specification of the substitute must be evaluated against system performance criteria.

Q: Are both parts compliant with current environmental and export regulations?

A: Yes. Both the ASCSM-30.000MHZ-LR-T and ASCO-30.000MHZ-L-T3 are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export purposes.

Q: What are the package footprint implications of substitution?

A: The original 4-UFBGA/CSPBGA package differs from the substitute's 4-SMD No Lead package. PCB layout and reflow profile adjustments may be necessary. Dimensions are comparable (1.79mm × 1.25mm versus 1.60mm × 1.20mm), but footprint patterns differ.

Q: Does the substitute part support the same Enable/Disable functionality?

A: Yes. Both parts feature Enable/Disable function for power management applications.