ASE-4.000MHZ-L-R-T Equivalent & Substitute Parts

Part Overview

The ASE-4.000MHZ-L-R-T is a 4 MHz XO (Standard) CMOS oscillator manufactured by Abracon LLC, designed for applications requiring a crystal-based frequency reference with enable/disable functionality. This part operates at 3.3V supply voltage and is housed in a 4-SMD, No Lead surface mount package. The product maintains Active status with 1174 pieces currently in stock. Substitute parts may be required due to inventory constraints, lead time considerations, or specific application requirements related to frequency stability tolerance.

Substiute Parts

ASE-4.000MHZ-L-R-T

Abracon LLCIn Stock: 1262ASE-4.000MHZ-L-R-T Datasheet

Current PartRFQ

ASE-4.000MHZ-L-C-T

Abracon LLCIn Stock: 138636ASE-4.000MHZ-L-C-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The ASE-4.000MHZ-L-R-T can be substituted with ASE-4.000MHZ-L-C-T based on the following criteria:

Substitution-Determining Parameters:

• Frequency: 4 MHz (identical)
• Output Type: CMOS (identical)
• Supply Voltage: 3.3V (identical)
• Function: Enable/Disable (identical)
• Operating Temperature Range: -40°C ~ 85°C (identical)
• Maximum Supply Current: 7mA (identical)
• Maximum Disable Current: 10µA (identical)
• Package Type: 4-SMD, No Lead (identical)
• Package Dimensions: 3.20mm x 2.50mm x 1.20mm (identical)
• Mounting Type: Surface Mount (identical)
• RoHS Status: ROHS3 Compliant (identical)
• Moisture Sensitivity Level: MSL 1 (identical)

Allowable Variation:

• Frequency Stability: ASE-4.000MHZ-L-R-T specifies ±25ppm, while ASE-4.000MHZ-L-C-T specifies ±50ppm. This represents a relaxation of the stability tolerance and is acceptable for applications where the tighter tolerance is not a design requirement.

Parameter Comparison

Engineering Selection Recommendations

Both the ASE-4.000MHZ-L-R-T and ASE-4.000MHZ-L-C-T maintain Active product status and are ROHS3 compliant with MSL 1 moisture sensitivity rating, indicating unlimited shelf life under standard storage conditions. The primary distinction between these parts is frequency stability tolerance. Selection between these oscillators should be based on application-specific frequency stability requirements. The ASE-4.000MHZ-L-R-T with ±25ppm stability is suitable for applications requiring tighter frequency accuracy, while the ASE-4.000MHZ-L-C-T with ±50ppm stability serves applications with relaxed stability specifications. Both parts are electrically and mechanically interchangeable when stability tolerance permits substitution. Inventory availability of the ASE-4.000MHZ-L-C-T (138560 pieces) significantly exceeds that of the ASE-4.000MHZ-L-R-T (1174 pieces), making it a viable alternative for high-volume procurement scenarios.

Frequently Asked Questions (FAQ)

Q: Can ASE-4.000MHZ-L-C-T be used as a direct replacement for ASE-4.000MHZ-L-R-T?

A: Yes, provided the application does not require frequency stability tighter than ±50ppm. All electrical and mechanical parameters are identical except for frequency stability tolerance. The ASE-4.000MHZ-L-C-T represents a relaxation of the stability specification and is suitable for applications where the original ±25ppm requirement is not mandatory.

Q: What is the difference between these two part numbers?

A: The primary difference is frequency stability: ASE-4.000MHZ-L-R-T specifies ±25ppm, while ASE-4.000MHZ-L-C-T specifies ±50ppm. All other parameters including frequency, voltage, current consumption, package dimensions, and compliance certifications are identical.

Q: Are the package dimensions identical?

A: Yes. Both parts use the same 4-SMD, No Lead package with dimensions of 3.20mm x 2.50mm and maximum seated height of 1.20mm. They are mechanically interchangeable on PCBs designed for either part.

Q: Do both parts have the same RoHS and moisture sensitivity ratings?

A: Yes. Both parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity level, indicating they have unlimited shelf life under standard storage conditions and meet the same environmental compliance standards.

Q: Which part should I select for new designs?

A: Selection depends on frequency stability requirements. If your application requires ±25ppm stability, use ASE-4.000MHZ-L-R-T. If ±50ppm stability is acceptable, ASE-4.000MHZ-L-C-T offers significantly higher inventory availability (138560 pieces versus 1174 pieces) and may provide better lead time and cost advantages.