ASE-40.000MHZ-L-C-T Equivalent & Substitute Parts

Part Overview

The ASE-40.000MHZ-L-C-T is a 40 MHz crystal oscillator manufactured by Abracon LLC, designed for applications requiring a standard XO (crystal oscillator) with CMOS output and enable/disable functionality. This component operates at 3.3V supply voltage and is housed in a compact 4-SMD, No Lead package measuring 3.20mm x 2.50mm. The part is currently active in production and RoHS3 compliant. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and component availability across different procurement channels.

Key Parameters

Parameter	Value
Frequency	40 MHz
Output Type	CMOS
Supply Voltage	3.3V
Function	Enable/Disable
Frequency Stability	±50ppm
Operating Temperature Range	-40°C ~ 85°C
Package Type	4-SMD, No Lead
Package Dimensions	3.20mm L x 2.50mm W
Maximum Height	1.20mm
Mounting Type	Surface Mount
RoHS Status	RoHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the ASE-40.000MHZ-L-C-T are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Frequency: 40 MHz (exact match required)
Output Type: CMOS (exact match required)
Supply Voltage: 3.3V (exact match required)
Function: Enable/Disable capability (exact match required)
Frequency Stability: ±50ppm (exact match required)
Operating Temperature Range: -40°C ~ 85°C (exact match required)
Package Type: 4-SMD, No Lead (exact match required)
Package Dimensions: 3.20mm x 2.50mm (exact match required)
Maximum Height: 1.20mm (exact match required)

Two substitute parts meet these criteria: SXO32C3A481-40.000M (Suntsu Electronics, Inc.) and LFSPXO025559 (IQD Frequency Products). Both parts share identical electrical specifications and mechanical form factors with the main part, enabling direct substitution in circuit designs.

Parameter Comparison

Parameter	ASE-40.000MHZ-L-C-T (Abracon)	SXO32C3A481-40.000M (Suntsu)	LFSPXO025559 (IQD)
Frequency	40 MHz	40 MHz	40 MHz
Output Type	CMOS	CMOS	CMOS
Supply Voltage	3.3V	3.3V	3.3V
Function	Enable/Disable	Enable/Disable	Enable/Disable
Frequency Stability	±50ppm	±50ppm	±50ppm
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package Type	4-SMD, No Lead	4-SMD, No Lead	4-SMD, No Lead
Package Dimensions	3.20mm x 2.50mm	3.20mm x 2.50mm	3.20mm x 2.50mm
Maximum Height	1.20mm	1.20mm	1.20mm
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
Current - Supply (Max)	13mA	17mA	20mA

Engineering Selection Recommendations

All three parts—ASE-40.000MHZ-L-C-T, SXO32C3A481-40.000M, and LFSPXO025559—are active products with RoHS3 compliance and REACH unaffected status. Selection among these parts should be based on supply availability, procurement lead times, and packaging requirements (Tape & Reel versus Bulk).

The ASE-40.000MHZ-L-C-T offers the lowest maximum supply current at 13mA, making it suitable for power-constrained applications. The SXO32C3A481-40.000M and LFSPXO025559 operate at higher current levels (17mA and 20mA respectively) but maintain identical electrical and mechanical specifications. All parts are suitable for applications requiring 40 MHz CMOS oscillators with enable/disable control in the -40°C to 85°C temperature range.

Frequently Asked Questions (FAQ)

Q: Can SXO32C3A481-40.000M be used as a direct replacement for ASE-40.000MHZ-L-C-T?

A: Yes. Both parts share identical frequency (40 MHz), output type (CMOS), supply voltage (3.3V), enable/disable function, frequency stability (±50ppm), operating temperature range (-40°C ~ 85°C), and package specifications (4-SMD, No Lead, 3.20mm x 2.50mm, 1.20mm height). The primary difference is packaging format (Bulk versus Tape & Reel) and maximum supply current (17mA versus 13mA).

Q: Can LFSPXO025559 be used as a direct replacement for ASE-40.000MHZ-L-C-T?

A: Yes. LFSPXO025559 meets all electrical and mechanical requirements of the ASE-40.000MHZ-L-C-T. The maximum supply current is 20mA compared to 13mA for the Abracon part. Both are RoHS3 compliant and operate identically within the specified parameters.

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

A: The three parts are electrically and mechanically equivalent. Differences include: manufacturer (Abracon, Suntsu, IQD), packaging format (Tape & Reel or Bulk), maximum supply current (13mA, 17mA, or 20mA), and inventory availability. All other specifications are identical.

Q: Are there any compatibility concerns when substituting these parts?

A: No compatibility concerns exist when substituting among these three parts. All share identical package dimensions, pin configurations, electrical characteristics, and functional specifications. PCB layout and circuit design remain unchanged.

Q: Which part should be selected for lowest power consumption?

A: The ASE-40.000MHZ-L-C-T offers the lowest maximum supply current at 13mA, making it the optimal choice for power-sensitive applications.

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