LFSPXO025166 48 MHz CMOS Crystal Oscillator Equivalent & Substitute Parts

Part Overview

The LFSPXO025166 is a 48 MHz standard XO (crystal oscillator) manufactured by IQD Frequency Products. This surface mount device operates at 3.3V with CMOS output and integrated enable/disable functionality. The oscillator is housed in a 4-SMD, no-lead package measuring 3.20mm × 2.50mm with a maximum seated height of 1.20mm. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Substiute Parts

LFSPXO025166

IQD Frequency ProductsIn Stock: 936LFSPXO025166 Datasheet

Current PartRFQ

7X-48.000MBE-T

TXC CORPORATIONIn Stock: 10847X-48.000MBE-T Datasheet

DirectRFQ

AU-48.000MBE-T

TXC CORPORATIONIn Stock: 2987AU-48.000MBE-T Datasheet

DirectRFQ

SXO32C3A481-48.000M

Suntsu Electronics, Inc.In Stock: 4829SXO32C3A481-48.000M Datasheet

DirectRFQ

ASE-48.000MHZ-L-C-T

Abracon LLCIn Stock: 8519ASE-48.000MHZ-L-C-T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LFSPXO025166 is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Parameters:

• Frequency: 48 MHz (exact match required)
• Output: CMOS (exact match required)
• Supply Voltage: 3.3V (exact match required)
• Function: Enable/Disable (exact match required)
• Frequency Stability: ±50ppm (exact match required)
• Operating Temperature: -40°C ~ 85°C (exact match required)
• Package/Case: 4-SMD, No Lead (exact match required)
• Dimensions: 0.126" L × 0.098" W / 3.20mm × 2.50mm (exact match required)
• Mounting Type: Surface Mount (exact match required)

All identified substitute parts meet these mandatory parameters. Variations in supply current, seated height, packaging format (tape & reel vs. cut tape vs. bulk), and compliance certifications do not disqualify substitution eligibility when the above parameters are equivalent.

Parameter Comparison

Engineering Selection Recommendations

All four substitute parts are functionally equivalent to the LFSPXO025166 across all mandatory electrical and mechanical parameters. Selection among these alternatives should be based on the following engineering considerations:

Supply Current Profile: The AU-48.000MBE-T (TXC) offers the lowest maximum supply current at 6mA, making it suitable for power-constrained applications. The SXO32C3A481-48.000M (Suntsu) and ASE-48.000MHZ-L-C-T (Abracon) provide intermediate current specifications at 17mA and 19mA respectively. The 7X-48.000MBE-T (TXC) and LFSPXO025166 (IQD) both specify 20mA maximum supply current.

Compliance Certifications: The AU-48.000MBE-T (TXC) carries AEC-Q100 automotive qualification, which may be required for automotive or high-reliability applications. The LFSPXO025166 (IQD), SXO32C3A481-48.000M (Suntsu), and ASE-48.000MHZ-L-C-T (Abracon) are ROHS3 compliant. All parts are EAR99 classified and REACH unaffected.

Packaging and Logistics: The LFSPXO025166 is available in Cut Tape and Digi-Reel format. The 7X-48.000MBE-T and ASE-48.000MHZ-L-C-T are supplied in Tape & Reel format. The AU-48.000MBE-T is available in Cut Tape. The SXO32C3A481-48.000M is supplied in Bulk format. Packaging selection depends on assembly line requirements and inventory management practices.

Seated Height Tolerance: The 7X-48.000MBE-T and AU-48.000MBE-T (both TXC) have a maximum seated height of 1.10mm, compared to 1.20mm for the LFSPXO025166, SXO32C3A481-48.000M, and ASE-48.000MHZ-L-C-T. This 0.10mm difference is negligible for most PCB assembly applications but should be verified if height constraints are critical.

Moisture Sensitivity: The 7X-48.000MBE-T, AU-48.000MBE-T, and ASE-48.000MHZ-L-C-T specify MSL 1 (Unlimited), indicating superior moisture resistance compared to the LFSPXO025166, which lists MSL as Not Applicable.

Frequently Asked Questions (FAQ)

Q: Can the 7X-48.000MBE-T (TXC) be used as a direct replacement for the LFSPXO025166 (IQD)?

A: Yes. The 7X-48.000MBE-T meets all mandatory electrical and mechanical equivalence parameters: 48 MHz frequency, CMOS output, 3.3V supply, enable/disable function, ±50ppm stability, -40°C to 85°C operating range, 4-SMD no-lead package, and 3.20mm × 2.50mm dimensions. The primary difference is packaging format (Tape & Reel vs. Cut Tape & Digi-Reel) and a 0.10mm reduction in seated height (1.10mm vs. 1.20mm).

Q: What is the significance of the AU-48.000MBE-T's lower supply current specification (6mA vs. 20mA)?

A: The AU-48.000MBE-T specifies a maximum supply current of 6mA, substantially lower than the LFSPXO025166's 20mA specification. This indicates superior power efficiency in the TXC design. For applications with strict power budgets, the AU-48.000MBE-T is the preferred choice. However, the lower current specification does not affect functional compatibility or output characteristics.

Q: Are there any compliance or certification differences that would prevent substitution?

A: All parts are Active status and meet environmental compliance requirements. The AU-48.000MBE-T carries AEC-Q100 automotive qualification, which is an additional certification not listed for the other parts. This does not prevent substitution in non-automotive applications. The LFSPXO025166, SXO32C3A481-48.000M, and ASE-48.000MHZ-L-C-T are ROHS3 compliant, while the 7X-48.000MBE-T and AU-48.000MBE-T are RoHS compliant. All parts are EAR99 classified and REACH unaffected.

Q: Does the packaging format (Cut Tape, Tape & Reel, Bulk) affect electrical performance?

A: No. Packaging format is a logistics and assembly consideration only. It does not affect electrical performance, frequency stability, output characteristics, or functional compatibility. Selection should be based on assembly line equipment compatibility and inventory management requirements.

Q: Can the SXO32C3A481-48.000M (Suntsu) be used in applications requiring the lowest possible supply current?

A: No. The SXO32C3A481-48.000M specifies 17mA maximum supply current, which is higher than the AU-48.000MBE-T (6mA). For power-constrained applications, the AU-48.000MBE-T is the optimal choice among the available substitutes.

Q: What is the practical significance of the 0.10mm seated height difference between parts?

A: The 7X-48.000MBE-T and AU-48.000MBE-T have a maximum seated height of 1.10mm, while the LFSPXO025166, SXO32C3A481-48.000M, and ASE-48.000MHZ-L-C-T are specified at 1.20mm. This 0.10mm difference is negligible for standard PCB assembly and does not affect component placement or board-level compatibility. Verification is recommended only if PCB design includes height-critical constraints.

Q: Are all substitute parts available in equivalent inventory quantities?

A: Inventory levels vary by part and supplier. The ASE-48.000MHZ-L-C-T (Abracon) shows the highest inventory at 8,443 pieces. The SXO32C3A481-48.000M (Suntsu) has 4,810 pieces. The AU-48.000MBE-T (TXC) has 2,918 pieces. The LFSPXO025166 (IQD) has 878 pieces. The 7X-48.000MBE-T (TXC) has 1,020 pieces. Inventory availability should be confirmed with suppliers for specific procurement timelines.