ASE-7.3728MHZ-LR-T Equivalent & Substitute Parts

Part Overview

The ASE-7.3728MHZ-LR-T is a 7.3728 MHz XO (Standard) CMOS oscillator manufactured by Abracon LLC. This surface mount crystal oscillator operates at 3.3V with enable/disable functionality, housed in a 4-SMD, No Lead package. The part is Active status and ROHS3 compliant. Substitute parts are identified when inventory constraints or procurement lead times necessitate alternative sourcing while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Manufacturer Part Number	ASE-7.3728MHZ-LR-T
Manufacturer	Abracon LLC
Series	ASE
Frequency	7.3728 MHz
Type	XO (Standard)
Output	CMOS
Voltage - Supply	3.3V
Function	Enable/Disable
Frequency Stability	±25ppm
Operating Temperature	-40°C ~ 85°C
Current - Supply (Max)	7mA
Current - Supply (Disable) (Max)	10µA
Mounting Type	Surface Mount
Package / Case	4-SMD, No Lead
Size / Dimension	0.126" L x 0.098" W (3.20mm x 2.50mm)
Height - Seated (Max)	0.047" (1.20mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

The ASE-7.3728MHZ-LR-T has one identified substitute: ASE-7.3728MHZ-L-C-T. Substitution is valid based on the following criteria:

Matching Parameters (Substitution Basis):

Identical frequency: 7.3728 MHz
Identical oscillator type: XO (Standard)
Identical output: CMOS
Identical supply voltage: 3.3V
Identical function: Enable/Disable
Identical operating temperature range: -40°C ~ 85°C
Identical current supply (Max): 7mA
Identical current supply (Disable) (Max): 10µA
Identical mounting type: Surface Mount
Identical package: 4-SMD, No Lead
Identical physical dimensions: 0.126" L x 0.098" W (3.20mm x 2.50mm)
Identical maximum seated height: 0.047" (1.20mm)
Identical RoHS and REACH compliance status

Differing Parameters:

Frequency Stability: Main part ±25ppm vs. Substitute ±50ppm
Packaging: Main part unspecified vs. Substitute Tape & Reel (TR)

The substitute part maintains full electrical and mechanical compatibility with identical pinout, voltage, frequency, and thermal characteristics. The primary difference is relaxed frequency stability tolerance and packaging format.

Parameter Comparison

Parameter	ASE-7.3728MHZ-LR-T (Main)	ASE-7.3728MHZ-L-C-T (Substitute)
Manufacturer	Abracon LLC	Abracon LLC
Series	ASE	ASE
Frequency	7.3728 MHz	7.3728 MHz
Type	XO (Standard)	XO (Standard)
Output	CMOS	CMOS
Voltage - Supply	3.3V	3.3V
Function	Enable/Disable	Enable/Disable
Frequency Stability	±25ppm	±50ppm
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Current - Supply (Max)	7mA	7mA
Current - Supply (Disable) (Max)	10µA	10µA
Mounting Type	Surface Mount	Surface Mount
Package / Case	4-SMD, No Lead	4-SMD, No Lead
Size / Dimension	0.126" L x 0.098" W (3.20mm x 2.50mm)	0.126" L x 0.098" W (3.20mm x 2.50mm)
Height - Seated (Max)	0.047" (1.20mm)	0.047" (1.20mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active

Engineering Selection Recommendations

Both the ASE-7.3728MHZ-LR-T and ASE-7.3728MHZ-L-C-T are Active status products from Abracon LLC with identical ROHS3 and REACH compliance certifications. The parts are electrically and mechanically interchangeable for PCB assembly and functional operation.

Selection between the main part and substitute depends on application frequency stability requirements. The main part specifies ±25ppm stability, while the substitute specifies ±50ppm. Applications requiring tighter frequency tolerance must use the main part. Applications tolerant of ±50ppm frequency deviation may use either part.

Packaging format differs: the main part uses unspecified packaging while the substitute is supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for automated assembly processes and high-volume production. Both parts are suitable for surface mount assembly with identical footprint and pinout.

Frequently Asked Questions (FAQ)

Q: Are ASE-7.3728MHZ-LR-T and ASE-7.3728MHZ-L-C-T pin-compatible?

A: Yes. Both parts use identical 4-SMD, No Lead package with matching pinout, dimensions (3.20mm x 2.50mm), and maximum seated height (1.20mm). Direct PCB footprint compatibility is confirmed.

Q: What is the frequency stability difference between these parts?

A: The main part ASE-7.3728MHZ-LR-T specifies ±25ppm frequency stability. The substitute ASE-7.3728MHZ-L-C-T specifies ±50ppm. The substitute has twice the allowable frequency deviation. Applications with strict frequency tolerance requirements must use the main part.

Q: Can I use the substitute part in place of the main part?

A: Substitution is valid when the application's frequency stability tolerance permits ±50ppm deviation. Electrical characteristics (voltage, current, output type, enable/disable function) and operating temperature range are identical. Mechanical compatibility is confirmed.

Q: What is the difference in packaging between these parts?

A: The substitute part is supplied in Tape & Reel (TR) format, standard for automated pick-and-place assembly. The main part packaging format is not specified in the provided data. Tape & Reel packaging is compatible with standard SMD assembly equipment.

Q: Are both parts RoHS compliant?

A: Yes. Both ASE-7.3728MHZ-LR-T and ASE-7.3728MHZ-L-C-T are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for electronic component use.

Q: What is the operating temperature range for these oscillators?

A: Both parts operate across -40°C to 85°C. This range covers industrial and commercial temperature specifications for most applications.

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