ASCSM-13.000MHZ-LR-T Equivalent & Substitute Parts

Part Overview

The ASCSM-13.000MHZ-LR-T is a 13 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 with a maximum seated height of 0.69mm.

The product is currently listed as Obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement. Substitute parts must maintain compatibility with the 13 MHz frequency specification, CMOS output characteristics, and Enable/Disable control function while accommodating the electrical and mechanical constraints of the original application.

Substiute Parts

ASCSM-13.000MHZ-LR-T

Abracon LLCIn Stock: 952ASCSM-13.000MHZ-LR-T Datasheet

Current PartRFQ

ASCO-13.000MHZ-L-T3

Abracon LLCIn Stock: 873ASCO-13.000MHZ-L-T3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ASCSM-13.000MHZ-LR-T are identified based on the following critical parameters that define functional equivalence:

Mandatory Matching Criteria:

• Frequency: 13 MHz (exact match required)
• Output Type: CMOS
• Function: Enable/Disable capability
• Operating Temperature Range: -40°C ~ 85°C (minimum)
• Mounting Type: Surface Mount

Allowable Variation Parameters:

• Voltage - Supply: Substitute must support the application's operating voltage; the original 1.7V ~ 3.6V range may be narrowed in alternatives
• Frequency Stability: May vary from ±25ppm; substitute specifications must be evaluated against application requirements
• Current - Supply (Max): May differ; substitute current consumption must be compatible with power budget constraints
• Package / Case: Alternative packages acceptable if mechanical fit and PCB layout accommodate the substitute dimensions
• Base Resonator: Both MEMS and Crystal-based oscillators are functionally equivalent for this application

The ASCO-13.000MHZ-L-T3 meets all mandatory criteria and is classified as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The ASCO-13.000MHZ-L-T3 is a direct substitute for the obsolete ASCSM-13.000MHZ-LR-T based on the following engineering factors:

Frequency and Output Compatibility: Both parts operate at 13 MHz with CMOS output and Enable/Disable functionality, ensuring signal compatibility with existing circuit designs.

Voltage Supply Consideration: The substitute operates at a fixed 3.3V supply voltage, compared to the original's 1.7V ~ 3.6V range. Applications requiring operation below 3.3V or above 3.3V must evaluate alternative substitutes or confirm that 3.3V operation is acceptable for the target system.

Frequency Stability: The substitute exhibits ±50ppm stability versus the original's ±25ppm. Applications with stringent frequency accuracy requirements must assess whether the wider tolerance is acceptable.

Current Consumption: The substitute draws 4.5mA maximum supply current, which is lower than the original's 6.5mA, providing improved power efficiency.

Package and Mechanical Fit: The substitute uses a 4-SMD No Lead package with dimensions of 1.60mm × 1.20mm and 0.70mm maximum height, compared to the original's 4-UFBGA/CSPBGA package at 1.79mm × 1.25mm × 0.69mm. PCB layout and footprint compatibility must be verified before implementation.

Compliance and Availability: Both parts are ROHS3 compliant and carry identical ECCN and HTSUS classifications. The substitute is currently in Active product status with confirmed inventory availability (804 Pcs), ensuring long-term procurement viability.

Frequently Asked Questions (FAQ)

Q: Can the ASCO-13.000MHZ-L-T3 be used as a direct replacement without PCB modifications?

A: The substitute requires PCB footprint verification. While both parts are surface-mount components with similar dimensions (1.60mm × 1.20mm vs. 1.79mm × 1.25mm), the package types differ (4-SMD No Lead vs. 4-UFBGA/CSPBGA). Existing PCB layouts designed for the original part may require footprint adjustment to accommodate the substitute package.

Q: What is the impact of the ±50ppm frequency stability on system performance?

A: The substitute's ±50ppm stability is twice the original's ±25ppm specification. Applications sensitive to frequency accuracy must evaluate whether this wider tolerance meets system requirements. For most general-purpose 13 MHz oscillator applications, ±50ppm is within acceptable operating parameters.

Q: Is the 3.3V fixed supply voltage compatible with my application?

A: The substitute operates exclusively at 3.3V, whereas the original supports 1.7V ~ 3.6V. If your application requires operation at voltages outside the 3.3V specification, the ASCO-13.000MHZ-L-T3 is not suitable. Confirm that your system design can accommodate 3.3V operation before selecting this substitute.

Q: Does the lower current consumption of the substitute affect performance?

A: No. The substitute's 4.5mA maximum supply current is lower than the original's 6.5mA, indicating improved power efficiency. This reduction does not compromise functional performance and may benefit power-constrained applications.

Q: What are the differences between MEMS and Crystal-based oscillators in this application?

A: The original uses MEMS technology while the substitute uses a Crystal resonator. Both technologies deliver equivalent 13 MHz CMOS output with Enable/Disable functionality. Crystal-based oscillators (substitute) typically offer lower cost and established long-term reliability, while MEMS oscillators (original) provide compact form factors and integrated functionality.

Q: Are there any moisture sensitivity concerns with the substitute?

A: The substitute lists Moisture Sensitivity Level as Not Applicable, indicating no moisture-related handling restrictions. The original specifies MSL 1 (Unlimited), also indicating no moisture sensitivity. Both parts can be handled and stored using standard component practices.