ASFL1-27.000MHZ-EC-T Equivalent & Substitute Parts

Part Overview

The ASFL1-27.000MHZ-EC-T is a 27 MHz crystal oscillator manufactured by Abracon LLC, classified as an XO (Standard) type with HCMOS and TTL output capabilities. This surface mount oscillator operates at 3.3V with enable/disable functionality, housed in a 4-SMD, No Lead package measuring 5.00mm x 3.20mm. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter ranges.

Substiute Parts

ASFL1-27.000MHZ-EC-T

Abracon LLCIn Stock: 1105ASFL1-27.000MHZ-EC-T Datasheet

Current PartRFQ

ASFL1-27.000MHZ-EK-T

Abracon LLCIn Stock: 2033ASFL1-27.000MHZ-EK-T Datasheet

UpgradeRFQ

ASFL1-27.000MHZ-L-T

Abracon LLCIn Stock: 2906ASFL1-27.000MHZ-L-T Datasheet

MFR RecommendedRFQ

636L3C027M00000

CTS-Frequency ControlsIn Stock: 2043636L3C027M00000 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ASFL1-27.000MHZ-EC-T are qualified based on the following criteria:

Mandatory Matching Parameters:

• Frequency: 27 MHz
• Supply Voltage: 3.3V
• Package Type: 4-SMD, No Lead
• Package Dimensions: 5.00mm x 3.20mm
• Mounting Type: Surface Mount
• Function: Enable/Disable
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation Parameters:

• Frequency Stability: ±30ppm to ±100ppm (tighter or equivalent tolerance acceptable)
• Operating Temperature Range: -20°C ~ 70°C to -40°C ~ 85°C (extended range acceptable)
• Maximum Supply Current: 15mA to 16mA (within component operational limits)
• Output Type: HCMOS or HCMOS/TTL (HCMOS-only output acceptable for TTL-compatible applications)

Three substitute parts meet these criteria and are categorized as follows:

Upgrade Substitute: ASFL1-27.000MHZ-EK-T offers improved frequency stability (±30ppm vs. ±50ppm) while maintaining all other parameters.

Manufacturer Recommended Substitute: ASFL1-27.000MHZ-L-T provides extended operating temperature range (-40°C ~ 85°C vs. -20°C ~ 70°C) with relaxed frequency stability (±100ppm).

Parametric Equivalent: 636L3C027M00000 from CTS-Frequency Controls matches all critical parameters with HCMOS output and marginally higher supply current (16mA vs. 15mA).

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with the original ASFL1-27.000MHZ-EC-T specification.

ASFL1-27.000MHZ-EK-T is suitable for applications requiring tighter frequency tolerance. The ±30ppm stability specification provides improved performance over the original ±50ppm specification while maintaining identical operating temperature and supply current parameters.

ASFL1-27.000MHZ-L-T is suitable for applications requiring extended operating temperature range. The -40°C ~ 85°C specification accommodates industrial and automotive environments beyond the original -20°C ~ 70°C range. The relaxed ±100ppm frequency stability is acceptable where tighter tolerance is not required.

636L3C027M00000 from CTS-Frequency Controls is suitable for applications where cross-manufacturer sourcing is required. The HCMOS-only output is compatible with TTL-level logic interfaces. The 16mA maximum supply current remains within acceptable operational limits for 3.3V systems.

All substitute parts share identical package geometry, mounting type, and mechanical compatibility with the original part, enabling direct PCB-level substitution without layout modification.

Frequently Asked Questions (FAQ)

Q: Can ASFL1-27.000MHZ-EK-T replace ASFL1-27.000MHZ-EC-T in existing designs?

A: Yes. The ASFL1-27.000MHZ-EK-T maintains all critical parameters including frequency, supply voltage, package dimensions, and operating temperature range. The improved frequency stability (±30ppm vs. ±50ppm) is a performance enhancement with no compatibility impact.

Q: What is the difference between ASFL1-27.000MHZ-L-T and the original part?

A: The ASFL1-27.000MHZ-L-T extends the operating temperature range to -40°C ~ 85°C, suitable for industrial applications. Frequency stability is relaxed to ±100ppm. All other parameters, including package dimensions and supply voltage, remain identical.

Q: Is the CTS 636L3C027M00000 pin-compatible with the Abracon ASFL1 series?

A: Yes. Both parts use identical 4-SMD, No Lead package geometry with 5.00mm x 3.20mm dimensions. Pin configuration and signal levels are compatible for direct substitution.

Q: Does the HCMOS-only output of 636L3C027M00000 affect TTL compatibility?

A: No. HCMOS output levels are compatible with TTL input thresholds in 3.3V systems. The 636L3C027M00000 is suitable for applications originally designed for HCMOS/TTL output.

Q: Are all substitute parts available in Tape & Reel packaging?

A: Yes. All substitute parts listed are supplied in Tape & Reel (TR) packaging, maintaining consistency with the original part's packaging format.

Q: What is the impact of the 16mA supply current in the CTS part versus 15mA in the Abracon parts?

A: The 1mA difference is within acceptable operational margins for 3.3V supply systems. Power dissipation impact is negligible in typical applications.