TC-27.000MBE-T Equivalent & Substitute Parts Reference

Part Overview

The TC-27.000MBE-T is a 27 MHz MEMS-based XO (Standard) CMOS oscillator manufactured by TXC CORPORATION. This surface mount device operates at 3.3V with enable/disable functionality in a 4-SMD, no-lead package measuring 3.20mm × 2.50mm. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and field replacement applications.

Substiute Parts

TC-27.000MBE-T

TXC CORPORATIONIn Stock: 733TC-27.000MBE-T Datasheet

Current PartRFQ

7X-27.000MBE-T

TXC CORPORATIONIn Stock: 8917X-27.000MBE-T Datasheet

DirectRFQ

AU-27.000MBE-T

TXC CORPORATIONIn Stock: 858AU-27.000MBE-T Datasheet

DirectRFQ

ASE-27.000MHZ-L-C-T

Abracon LLCIn Stock: 3996ASE-27.000MHZ-L-C-T Datasheet

DirectRFQ

LFSPXO026368

IQD Frequency ProductsIn Stock: 2388LFSPXO026368 Datasheet

DirectRFQ

OXETGLJANF-27.000000

TaitienIn Stock: 1001OXETGLJANF-27.000000 Datasheet

DirectRFQ

SXO32C3A481-27.000M

Suntsu Electronics, Inc.In Stock: 2132SXO32C3A481-27.000M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TC-27.000MBE-T is determined by strict compliance with the following parameters:

Critical Matching Parameters:

• Frequency: 27 MHz (exact match required)
• Output: CMOS
• Supply Voltage: 3.3V
• Function: Enable/Disable capability
• Frequency Stability: ±50ppm
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 4-SMD, No Lead
• Physical Dimensions: 0.126" L × 0.098" W (3.20mm × 2.50mm)
• Mounting Type: Surface Mount
• Moisture Sensitivity Level: 1 (Unlimited)

All identified substitute parts meet these core electrical and mechanical requirements. Variations in current consumption, seated height, base resonator type (crystal vs. MEMS), and product status are secondary considerations that do not preclude substitution when the critical parameters align.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: AU-27.000MBE-T (TXC CORPORATION)

The AU-27.000MBE-T is the preferred substitute for the obsolete TC-27.000MBE-T. Both parts are manufactured by TXC CORPORATION, ensuring design continuity and supply chain consistency. The AU series is active and RoHS Compliant. The AU-27.000MBE-T demonstrates the lowest current consumption at 6mA maximum and carries AEC-Q100 automotive qualification, providing enhanced reliability documentation. Physical dimensions and electrical specifications are identical to the main part.

Secondary Recommendations:

7X-27.000MBE-T (TXC CORPORATION) — Active TXC product with 20mA current consumption and RoHS Compliance. Maintains same manufacturer lineage as the obsolete TC series.

ASE-27.000MHZ-L-C-T (Abracon LLC) — Active alternative with 13mA current consumption and ROHS3 Compliance. Highest inventory availability (3985 pcs). Suitable for applications where multi-source qualification is required.

LFSPXO026368 (IQD Frequency Products) — Active alternative with 12mA current consumption and ROHS3 Compliance. Substantial inventory (2333 pcs) supports long-term supply security.

OXETGLJANF-27.000000 (Taitien) — Active alternative with 10mA current consumption and ROHS3 Compliance. Moderate inventory (918 pcs).

SXO32C3A481-27.000M (Suntsu Electronics, Inc.) — Active alternative with 10mA current consumption and ROHS3 Compliance. Available in bulk packaging (2090 pcs).

All substitute parts satisfy the critical electrical and mechanical parameters. Selection among active alternatives should prioritize supply chain strategy, inventory availability, and existing qualification documentation within the design organization.

Frequently Asked Questions (FAQ)

Q: Can the TC-27.000MBE-T be directly replaced with any of the listed substitutes?

A: Yes. All listed substitute parts meet the critical electrical and mechanical specifications: 27 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. Direct PCB-level substitution is supported without design modification.

Q: What is the significance of the height difference between the main part (0.80mm) and substitute parts (1.10mm to 1.20mm)?

A: The seated height variation falls within standard surface mount assembly tolerances for 4-SMD no-lead packages. The increased height in substitute parts does not affect electrical performance or PCB layout compatibility. Verify clearance in applications with height-constrained enclosures.

Q: Why does the AU-27.000MBE-T consume only 6mA while the original TC-27.000MBE-T consumes 25mA?

A: Current consumption differences reflect design improvements in the crystal-based resonator architecture compared to the MEMS-based design of the original part. Lower current consumption provides power efficiency benefits without compromising frequency stability or output characteristics.

Q: Are all substitute parts RoHS compliant?

A: The original TC-27.000MBE-T does not specify RoHS status. All active substitute parts are RoHS Compliant or ROHS3 Compliant, meeting current environmental regulations. The 7X-27.000MBE-T, AU-27.000MBE-T, ASE-27.000MHZ-L-C-T, LFSPXO026368, OXETGLJANF-27.000000, and SXO32C3A481-27.000M all satisfy RoHS requirements.

Q: What is the difference between MEMS and crystal-based oscillators in this comparison?

A: The original TC-27.000MBE-T uses a MEMS resonator. All substitute parts use crystal-based resonators. Both technologies deliver identical electrical performance within the specified parameters (27 MHz, ±50ppm stability, CMOS output, 3.3V operation). Crystal-based designs typically offer lower power consumption and established long-term reliability data.

Q: Which substitute part offers the best supply availability?

A: ASE-27.000MHZ-L-C-T (Abracon LLC) provides the highest current inventory at 3985 pieces. LFSPXO026368 (IQD Frequency Products) offers 2333 pieces, and SXO32C3A481-27.000M (Suntsu Electronics) provides 2090 pieces. Inventory levels support extended production runs and field replacement requirements.

Q: Can I use multiple substitute parts interchangeably in the same design?

A: Yes. All substitute parts are electrically and mechanically interchangeable at the PCB level. However, for production consistency and supply chain management, select a single primary substitute and designate secondary alternatives only if the primary source becomes unavailable.

Q: Does the AU-27.000MBE-T AEC-Q100 qualification provide additional assurance?

A: AEC-Q100 qualification indicates the part meets automotive industry reliability and quality standards. This certification provides enhanced documentation of thermal cycling, vibration, and long-term stability testing. For non-automotive applications, AEC-Q100 qualification is beneficial but not required for functional compatibility.

Q: What packaging options are available among the substitutes?

A: Packaging varies: 7X-27.000MBE-T (Tape & Reel), AU-27.000MBE-T (Cut Tape), ASE-27.000MHZ-L-C-T (Tape & Reel), LFSPXO026368 (Tape & Reel), OXETGLJANF-27.000000 (Tape & Reel), and SXO32C3A481-27.000M (Bulk). Select packaging based on assembly process requirements and order quantities.