ASCSM-32.000MHZ-LR-T Equivalent & Substitute Parts

Part Overview

The ASCSM-32.000MHZ-LR-T is a 32 MHz MEMS-based XO (Standard) oscillator manufactured by Abracon LLC, designed for applications requiring low-voltage operation across 1.7V to 3.6V supply ranges. This component features CMOS output with enable/disable functionality 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.

Substiute Parts

ASCSM-32.000MHZ-LR-T

Abracon LLCIn Stock: 1018ASCSM-32.000MHZ-LR-T Datasheet

Current PartRFQ

ASCO-32.000MHZ-L-T3

Abracon LLCIn Stock: 916ASCO-32.000MHZ-L-T3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ASCSM-32.000MHZ-LR-T is determined by the following critical parameters:

• Frequency Match: 32 MHz (exact)
• Output Type: CMOS
• Function: Enable/Disable capability
• Operating Temperature Range: -40°C ~ 85°C (minimum requirement)
• RoHS Compliance: ROHS3 Compliant
• Package Compatibility: Surface mount with compatible pinout and footprint

The ASCO-32.000MHZ-L-T3 qualifies as a direct substitute based on matching frequency, CMOS output, enable/disable function, operating temperature range, and RoHS3 compliance. However, substitution requires evaluation of voltage supply range compatibility and frequency stability tolerance for the specific application.

Parameter Comparison

Engineering Selection Recommendations

The ASCO-32.000MHZ-L-T3 is an active product from the same manufacturer, providing continuity for designs requiring 32 MHz CMOS oscillators with enable/disable functionality. Both components maintain ROHS3 compliance and operate across the -40°C to 85°C temperature range.

Key considerations for substitution:

• Voltage Supply: The substitute operates at fixed 3.3V, whereas the original supports 1.7V to 3.6V. Applications requiring operation below 3.3V or with variable supply voltages require alternative evaluation.
• Frequency Stability: The substitute exhibits ±50ppm stability compared to the original ±25ppm. Applications with stringent frequency tolerance requirements must account for this difference.
• Resonator Technology: The substitute uses crystal-based resonance versus MEMS in the original. This affects long-term stability characteristics and environmental sensitivity.
• Package Form Factor: Both maintain similar physical dimensions and surface-mount compatibility, though package type differs (4-UFBGA/CSPBGA versus 4-SMD, No Lead).

Frequently Asked Questions (FAQ)

Q: Can the ASCO-32.000MHZ-L-T3 directly replace the ASCSM-32.000MHZ-LR-T in all applications?

A: Direct replacement is possible only when the application operates at 3.3V supply voltage and can tolerate ±50ppm frequency stability. Applications requiring the original 1.7V to 3.6V range or ±25ppm stability require alternative component evaluation.

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

A: MEMS oscillators offer smaller form factors and lower power consumption, while crystal oscillators typically provide superior frequency stability and lower phase noise. The substitute's crystal-based design may exhibit different environmental sensitivity and aging characteristics.

Q: Are the packages mechanically compatible?

A: Both components maintain similar physical dimensions (approximately 1.79mm × 1.25mm and 1.60mm × 1.20mm respectively) and comparable heights (0.69mm and 0.70mm). However, the package types differ (4-UFBGA/CSPBGA versus 4-SMD, No Lead), requiring PCB footprint verification before substitution.

Q: Does the substitute meet the same compliance requirements?

A: Both components are ROHS3 compliant and carry EAR99 ECCN classification. REACH status is unaffected for both parts, ensuring regulatory alignment for most applications.

Q: What is the impact of the frequency stability difference?

A: The original ±25ppm specification provides tighter tolerance than the substitute's ±50ppm. Applications sensitive to frequency drift, such as precision timing or communication systems, must evaluate whether the broader tolerance remains acceptable.