ASFL1-33.333MHZ-L-T Equivalent & Substitute Parts

Part Overview

The ASFL1-33.333MHZ-L-T is a 33.333 MHz XO (Standard) crystal oscillator manufactured by Abracon LLC. This surface mount oscillator provides HCMOS and TTL output with 3.3V supply voltage and Enable/Disable functionality in a 4-SMD, No Lead package. The part is Active status and widely used in timing-critical applications requiring precise 33.333 MHz frequency generation. Substitute parts may be required due to inventory availability, specific frequency stability requirements, or operating temperature range constraints for particular application environments.

Substiute Parts

ASFL1-33.333MHZ-L-T

Abracon LLCIn Stock: 657ASFL1-33.333MHZ-L-T Datasheet

Current PartRFQ

ASFL1-33.333MHZ-EC-T

Abracon LLCIn Stock: 2229ASFL1-33.333MHZ-EC-T Datasheet

MFR RecommendedRFQ

ASFL1-33.333MHZ-EK-T

Abracon LLCIn Stock: 3234ASFL1-33.333MHZ-EK-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ASFL1-33.333MHZ-L-T are qualified based on the following criteria:

Fixed Parameters (Must Match for Substitution):

• Frequency: 33.333 MHz
• Output Type: HCMOS, TTL
• Supply Voltage: 3.3V
• Function: Enable/Disable
• Package / Case: 4-SMD, No Lead
• Mounting Type: Surface Mount
• Physical Dimensions: 0.197" L x 0.126" W (5.00mm x 3.20mm)
• Height - Seated (Max): 0.051" (1.30mm)
• Manufacturer: Abracon LLC
• Series: ASFL1
• Product Status: Active

Variable Parameters (Allowed to Differ):

• Frequency Stability: ±100ppm (main part) vs. ±50ppm or ±30ppm (substitutes)
• Operating Temperature Range: -40°C ~ 85°C (main part) vs. -20°C ~ 70°C (substitutes)

The two qualified substitute parts maintain identical electrical and mechanical specifications while offering improved frequency stability performance at the cost of a narrower operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

All three parts—ASFL1-33.333MHZ-L-T, ASFL1-33.333MHZ-EC-T, and ASFL1-33.333MHZ-EK-T—are Active status products from Abracon LLC with ROHS3 compliance and identical mechanical and electrical interfaces. Selection between these parts depends on application-specific requirements:

ASFL1-33.333MHZ-L-T is suitable for applications requiring the widest operating temperature range (-40°C ~ 85°C) with standard frequency stability (±100ppm).

ASFL1-33.333MHZ-EC-T provides improved frequency stability (±50ppm) within a -20°C ~ 70°C operating range, appropriate for applications with moderate temperature constraints and tighter frequency tolerance requirements.

ASFL1-33.333MHZ-EK-T delivers the highest frequency stability (±30ppm) within the same -20°C ~ 70°C operating range, suitable for precision timing applications with stringent frequency accuracy demands and moderate temperature operating environments.

All parts maintain identical supply current specifications (45mA maximum, 10µA in disable mode) and package dimensions, ensuring direct mechanical and electrical interchangeability within their respective operating temperature ranges.

Frequently Asked Questions (FAQ)

Q: Can ASFL1-33.333MHZ-EC-T or ASFL1-33.333MHZ-EK-T be used as direct replacements for ASFL1-33.333MHZ-L-T?

A: Direct replacement is possible only if the application's operating temperature range does not exceed -20°C ~ 70°C. The substitute parts have a narrower operating temperature range than the main part. If the application requires operation below -20°C or above 70°C, the ASFL1-33.333MHZ-L-T is the only qualified option.

Q: What is the difference between the three parts in terms of frequency stability?

A: The ASFL1-33.333MHZ-L-T has ±100ppm stability, the ASFL1-33.333MHZ-EC-T has ±50ppm stability, and the ASFL1-33.333MHZ-EK-T has ±30ppm stability. Lower ppm values indicate tighter frequency tolerance. Selection depends on the application's frequency accuracy requirements.

Q: Are all three parts mechanically identical?

A: Yes. All three parts share identical package type (4-SMD, No Lead), physical dimensions (0.197" L x 0.126" W / 5.00mm x 3.20mm), and maximum seated height (0.051" / 1.30mm). They are mechanically interchangeable on PCBs designed for the ASFL1 series.

Q: Do all parts have the same power consumption specifications?

A: Yes. All three parts have identical maximum supply current (45mA) and disable mode current (10µA). Power consumption characteristics are consistent across all three options.

Q: What compliance certifications apply to all substitute parts?

A: All three parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. Moisture sensitivity level is 1 (Unlimited) for all parts, indicating no special moisture handling requirements.