ASE-33.333MHZ-L-R-T Equivalent & Substitute Parts

Part Overview

The ASE-33.333MHZ-L-R-T is a 33.333 MHz XO (Standard) CMOS oscillator manufactured by Abracon LLC, designed for 3.3V applications with Enable/Disable functionality. This surface mount crystal oscillator operates across the industrial temperature range of -40°C to 85°C with ±25ppm frequency stability. The part is actively produced and widely available, with 858 units in current stock. Substitute parts are identified when design requirements necessitate alternative frequency stability specifications, different operating temperature ranges, or alternative packaging formats while maintaining core electrical and mechanical compatibility.

Substiute Parts

ASE-33.333MHZ-L-R-T

Abracon LLCIn Stock: 896ASE-33.333MHZ-L-R-T Datasheet

Current PartRFQ

ASE-33.333MHZ-E-T

Abracon LLCIn Stock: 1942ASE-33.333MHZ-E-T Datasheet

MFR RecommendedRFQ

ASE-33.333MHZ-L-C-T

Abracon LLCIn Stock: 5682ASE-33.333MHZ-L-C-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

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

Core Electrical Compatibility Requirements:

• Frequency: 33.333 MHz (exact match required)
• Output Type: CMOS (exact match required)
• Supply Voltage: 3.3V (exact match required)
• Function: Enable/Disable (exact match required)
• Package / Case: 4-SMD, No Lead (exact match required)
• Physical Dimensions: 0.126" L x 0.098" W (3.20mm x 2.50mm) (exact match required)
• Height - Seated (Max): 0.047" (1.20mm) (exact match required)

Parameters Allowed to Vary:

• Frequency Stability: ±25ppm (main part) to ±100ppm (substitute range)
• Operating Temperature Range: -40°C ~ 85°C (main part) to -20°C ~ 70°C (substitute range)
• Packaging Format: Tape & Reel (TR) to Cut Tape (CT) & Digi-Reel®

All substitute parts maintain identical current consumption specifications, RoHS3 compliance, MSL rating, and active product status.

Parameter Comparison

Engineering Selection Recommendations

ASE-33.333MHZ-L-R-T (Primary Part): Select this part when the application requires the tightest frequency stability specification of ±25ppm across the full industrial temperature range of -40°C to 85°C. This part is actively produced and maintains ROHS3 compliance with unlimited moisture sensitivity rating.

ASE-33.333MHZ-E-T (Substitute): This part is suitable for applications where the operating temperature range can be limited to -20°C to 70°C and frequency stability of ±100ppm is acceptable. The relaxed frequency stability specification may reduce cost. This part is actively produced with higher current inventory availability (1927 units).

ASE-33.333MHZ-L-C-T (Substitute): This part provides an intermediate frequency stability specification of ±50ppm while maintaining the full industrial temperature range of -40°C to 85°C. The primary distinction is the packaging format (Cut Tape and Digi-Reel® instead of standard Tape & Reel). This part is actively produced with the highest current inventory availability (5619 units). Select this part when packaging format flexibility is required and ±50ppm stability meets application requirements.

All three parts maintain identical electrical performance in terms of output type, supply voltage, enable/disable function, current consumption, and physical dimensions. All parts are ROHS3 compliant with MSL rating of 1 (Unlimited).

Frequently Asked Questions (FAQ)

Q: Can ASE-33.333MHZ-E-T be used as a direct replacement for ASE-33.333MHZ-L-R-T?

A: ASE-33.333MHZ-E-T is electrically and mechanically compatible with ASE-33.333MHZ-L-R-T for applications operating within the temperature range of -20°C to 70°C. The primary difference is the frequency stability specification (±100ppm versus ±25ppm). If your application operates within this narrower temperature range and can tolerate the relaxed frequency stability, this part is a valid substitute.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging?

A: Tape & Reel (TR) is the standard continuous reel format for automated assembly. Cut Tape (CT) & Digi-Reel® provides flexibility in ordering smaller quantities or mixed component reels. The electrical and mechanical specifications of the component remain identical regardless of packaging format.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the identical 4-SMD, No Lead package with the same physical dimensions (0.126" L x 0.098" W, 3.20mm x 2.50mm) and height (0.047" maximum seated height). They are directly interchangeable at the PCB level.

Q: Which part should I select for maximum frequency stability?

A: ASE-33.333MHZ-L-R-T provides the tightest frequency stability specification of ±25ppm. Select this part when your application requires the highest frequency accuracy across the full industrial temperature range of -40°C to 85°C.

Q: Can I use ASE-33.333MHZ-L-C-T in high-temperature applications above 85°C?

A: No. ASE-33.333MHZ-L-C-T is rated for operating temperatures from -40°C to 85°C, identical to the main part ASE-33.333MHZ-L-R-T. For applications requiring operation above 85°C, neither this substitute nor the main part is suitable.

Q: What is the significance of the frequency stability difference between ±25ppm and ±100ppm?

A: Frequency stability specification defines the maximum deviation of the oscillator frequency from the nominal 33.333 MHz across the operating temperature range and over time. ±25ppm represents a tighter tolerance (±0.833 kHz deviation) compared to ±100ppm (±3.333 kHz deviation). Applications requiring precise frequency control should select parts with tighter stability specifications.

Q: Are all parts RoHS3 compliant?

A: Yes. All three parts (ASE-33.333MHZ-L-R-T, ASE-33.333MHZ-E-T, and ASE-33.333MHZ-L-C-T) are ROHS3 compliant with MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions.