ASFL-40.000MHZ Equivalent & Substitute Parts

Part Overview

The ASFL-40.000MHZ is an oscillator (XO) manufactured by Abracon LLC with a 40 MHz frequency specification. This part is classified as obsolete and is no longer in active production. Due to its obsolete status, locating original inventory may present supply chain challenges. The ASFL1-40.000MHZ-L-T serves as the direct manufacturer substitute, offering equivalent frequency performance within an active product line with improved availability and ongoing manufacturer support.

Substiute Parts

ASFL-40.000MHZ

Abracon LLCIn Stock: 1202ASFL-40.000MHZ Datasheet

Current PartRFQ

ASFL1-40.000MHZ-L-T

Abracon LLCIn Stock: 2969ASFL1-40.000MHZ-L-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The ASFL1-40.000MHZ-L-T is designated as a direct substitute for the ASFL-40.000MHZ based on the following critical parameters:

Frequency Match: Both parts operate at 40.000 MHz, ensuring functional equivalence in frequency-dependent applications.

Manufacturer Consistency: Both parts are manufactured by Abracon LLC, maintaining design lineage and reliability standards.

Compliance Alignment: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for equivalent applications.

Moisture Sensitivity: Both parts carry MSL rating of 1 (Unlimited), indicating identical moisture handling and storage requirements.

Supply Chain Status: The substitute part is active in production with 2915 units in stock, providing superior long-term availability compared to the obsolete original part.

Parameter Comparison

Engineering Selection Recommendations

Obsolescence Mitigation: The ASFL-40.000MHZ is classified as obsolete. Selection of the ASFL1-40.000MHZ-L-T eliminates long-term supply risk and ensures access to active manufacturer support and documentation.

Regulatory Compliance: Both parts satisfy ROHS3 and REACH requirements. The substitute part carries an active ECCN classification (EAR99) compared to the obsolete designation of the original part, ensuring current export compliance documentation.

Inventory Availability: The substitute part maintains significantly higher inventory levels (2915 units versus 1110 units), supporting production continuity and reducing procurement lead times.

Functional Equivalence: Identical 40 MHz frequency specification and MSL rating ensure direct functional substitution in existing designs without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the ASFL1-40.000MHZ-L-T be used as a direct replacement for the ASFL-40.000MHZ in existing designs?

A: Yes. Both parts operate at 40 MHz with identical MSL ratings and equivalent compliance certifications. The substitute part is the manufacturer-designated replacement for the obsolete original part.

Q: What are the key differences between these two parts?

A: The primary difference is product status: the ASFL-40.000MHZ is obsolete, while the ASFL1-40.000MHZ-L-T is active. The substitute part provides documented electrical specifications (frequency stability ±100ppm, 3.3V supply, HCMOS/TTL output, -40°C to 85°C operating range) and surface mount packaging details not specified for the original part.

Q: Are there any packaging or footprint considerations when substituting these parts?

A: The ASFL1-40.000MHZ-L-T is specified as a 4-SMD, No Lead surface mount package with dimensions of 5.00mm x 3.20mm and maximum seated height of 1.30mm. Verify that your PCB layout accommodates these dimensions and surface mount assembly requirements.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected. The substitute part carries an active ECCN classification (EAR99), ensuring current export compliance documentation is available.

Q: What is the frequency stability specification for these oscillators?

A: The ASFL1-40.000MHZ-L-T specifies frequency stability of ±100ppm. The original ASFL-40.000MHZ does not provide this specification in available documentation.

Q: Are moisture handling requirements identical between these parts?

A: Yes. Both parts carry MSL rating 1 (Unlimited), indicating identical moisture sensitivity levels and storage requirements.