ASCSM-10.000MHZ-LR-T Equivalent & Substitute Parts

Part Overview

The ASCSM-10.000MHZ-LR-T is a 10 MHz MEMS-based XO (Standard) oscillator manufactured by Abracon LLC, designed for applications requiring a 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 ASCSM-10.000MHZ-LR-T has reached obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems currently utilizing this oscillator.

Substiute Parts

ASCSM-10.000MHZ-LR-T

Abracon LLCIn Stock: 1135ASCSM-10.000MHZ-LR-T Datasheet

Current PartRFQ

ASCO-10.000MHZ-L-T3

Abracon LLCIn Stock: 850ASCO-10.000MHZ-L-T3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ASCSM-10.000MHZ-LR-T is determined by the following critical parameters:

• Frequency Match: 10 MHz (exact)
• Output Type: CMOS (exact)
• Function: Enable/Disable capability (required)
• Operating Temperature Range: -40°C ~ 85°C (minimum requirement)
• Frequency Stability: ±25ppm or better (tighter tolerance preferred)
• Supply Voltage Compatibility: Must operate within or encompass the 1.7V ~ 3.6V range
• Package Compatibility: Surface mount packages with compatible footprints and pinouts
• Compliance: RoHS3 and REACH compliance maintained

The ASCO-10.000MHZ-L-T3 qualifies as a substitute part based on matching frequency, output type, enable/disable function, operating temperature range, and regulatory compliance. However, design-level considerations apply due to differences in supply voltage range, frequency stability, and package configuration.

Parameter Comparison

Engineering Selection Recommendations

The ASCO-10.000MHZ-L-T3 is available as an active product from Abracon LLC, providing supply chain continuity for the obsolete ASCSM-10.000MHZ-LR-T. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment.

Key considerations for selection:

• Supply Voltage: The substitute operates at a fixed 3.3V supply, whereas the main part supports 1.7V to 3.6V. Designs requiring operation below 3.3V or at the lower voltage boundary require verification of circuit compatibility.
• Frequency Stability: The substitute exhibits ±50ppm stability compared to the main part's ±25ppm. Applications with stringent frequency tolerance requirements must evaluate this difference.
• Package Transition: The shift from 4-UFBGA/CSPBGA to 4-SMD No Lead requires PCB layout and assembly process validation.
• Current Consumption: The substitute draws 4.5mA maximum versus 6.5mA, representing a power efficiency improvement.

Frequently Asked Questions (FAQ)

Q: Can the ASCO-10.000MHZ-L-T3 directly replace the ASCSM-10.000MHZ-LR-T in existing designs?

A: Direct replacement requires verification of three factors: (1) circuit supply voltage compatibility with the fixed 3.3V requirement, (2) frequency stability tolerance acceptance at ±50ppm, and (3) PCB footprint and assembly process compatibility with the 4-SMD No Lead package.

Q: What is the primary difference between these two oscillators?

A: The main part uses MEMS resonator technology with a wide supply voltage range (1.7V ~ 3.6V), while the substitute uses crystal resonator technology with fixed 3.3V operation. Both deliver 10 MHz CMOS output with enable/disable functionality.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the ASCSM-10.000MHZ-LR-T and ASCO-10.000MHZ-L-T3 are ROHS3 compliant and REACH unaffected.

Q: How does frequency stability affect component selection?

A: The main part specifies ±25ppm stability, while the substitute specifies ±50ppm. Applications requiring tighter frequency tolerance must evaluate whether the substitute's stability meets system requirements.

Q: What packaging considerations apply to this substitution?

A: The main part uses 4-UFBGA/CSPBGA (1.79mm × 1.25mm), while the substitute uses 4-SMD No Lead (1.60mm × 1.20mm). PCB layout, solder reflow profiles, and assembly equipment compatibility must be validated for the new package type.

Q: Is the substitute part currently available?

A: Yes. The ASCO-10.000MHZ-L-T3 maintains active product status with documented inventory availability, ensuring supply chain continuity for the obsolete main part.