TC-12.000MBD-T Equivalent & Substitute Parts Reference

Part Overview

The TC-12.000MBD-T is a 12 MHz MEMS-based XO (Standard) CMOS oscillator manufactured by TXC CORPORATION. This component operates at 3.3V with Enable/Disable functionality in a 4-SMD, No Lead surface mount package. The part is classified as Obsolete, necessitating identification of functionally equivalent substitute components for ongoing design support and procurement continuity.

Substiute Parts

TC-12.000MBD-T

TXC CORPORATIONIn Stock: 1153TC-12.000MBD-T Datasheet

Current PartRFQ

7X-12.000MBD-T

TXC CORPORATIONIn Stock: 11937X-12.000MBD-T Datasheet

DirectRFQ

ASE-12.000MHZ-L-R-T

Abracon LLCIn Stock: 1088ASE-12.000MHZ-L-R-T Datasheet

DirectRFQ

SXO32C3C481-12.000M

Suntsu Electronics, Inc.In Stock: 3027SXO32C3C481-12.000M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TC-12.000MBD-T is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 12 MHz (exact match required)
• Output Type: CMOS
• Supply Voltage: 3.3V
• Function: Enable/Disable
• Frequency Stability: ±25ppm
• Operating Temperature Range: -40°C ~ 85°C
• Package / Case: 4-SMD, No Lead
• Physical Dimensions: 0.126" L x 0.098" W (3.20mm x 2.50mm)
• Mounting Type: Surface Mount
• Moisture Sensitivity Level: 1 (Unlimited)

All identified substitute parts meet these mandatory parameters. Variations in base resonator type (MEMS versus Crystal), current consumption, seated height, and product status are secondary considerations that do not preclude functional substitution within the specified electrical and mechanical constraints.

Parameter Comparison

Engineering Selection Recommendations

7X-12.000MBD-T (TXC CORPORATION): This substitute maintains manufacturer continuity with the obsolete TC-12.000MBD-T, both from TXC CORPORATION. The 7X series is Active status and RoHS Compliant. Current consumption is reduced to 15mA compared to the original 25mA. Seated height increases from 0.031" to 0.043", which requires PCB layout verification for clearance compatibility. Packaging is Tape & Reel format.

ASE-12.000MHZ-L-R-T (Abracon LLC): This substitute offers the lowest maximum supply current at 7mA and includes specified disable current of 10µA. ROHS3 Compliant status and REACH Unaffected certification are provided. Seated height is 0.047", requiring clearance verification. Tape & Reel packaging is standard. This option is suitable for power-sensitive applications.

SXO32C3C481-12.000M (Suntsu Electronics, Inc.): This substitute provides Active product status with ROHS3 Compliance. Current consumption is 10mA. Seated height matches the Abracon part at 0.047". Bulk packaging is available. This option offers inventory availability with 2982 pieces in stock.

All three substitutes are electrically and mechanically compatible with the TC-12.000MBD-T within the specified parameter constraints. Selection should be based on PCB layout clearance requirements (seated height), power budget constraints (current consumption), packaging format preference, and compliance certification requirements for the end application.

Frequently Asked Questions (FAQ)

Q: Can the 7X-12.000MBD-T directly replace the TC-12.000MBD-T on existing PCBs?

A: Electrical substitution is valid. However, the seated height increases from 0.031" to 0.043". PCB layout must be verified to confirm adequate clearance above the component. If clearance is insufficient, PCB rework may be required.

Q: What is the primary difference between the TC-12.000MBD-T and its substitutes?

A: The TC-12.000MBD-T uses a MEMS resonator, while all three substitutes use Crystal resonators. Both technologies meet the specified ±25ppm frequency stability and all other electrical parameters. MEMS oscillators typically offer lower cost and better shock resistance, while Crystal oscillators are established technology with proven long-term reliability.

Q: Which substitute has the lowest power consumption?

A: The ASE-12.000MHZ-L-R-T from Abracon LLC has the lowest maximum supply current at 7mA, with an additional disable current specification of 10µA. This makes it suitable for battery-powered or power-constrained applications.

Q: Are all substitutes RoHS compliant?

A: The 7X-12.000MBD-T is RoHS Compliant. The ASE-12.000MHZ-L-R-T and SXO32C3C481-12.000M are both ROHS3 Compliant, which represents a more recent compliance standard. The original TC-12.000MBD-T does not specify RoHS status.

Q: What packaging formats are available?

A: The 7X-12.000MBD-T and ASE-12.000MHZ-L-R-T are supplied in Tape & Reel (TR) format. The SXO32C3C481-12.000M is supplied in Bulk format. Packaging selection depends on manufacturing volume and assembly line requirements.

Q: Do all substitutes support Enable/Disable functionality?

A: Yes. All three substitute parts include Enable/Disable function, matching the original TC-12.000MBD-T specification.

Q: Is the physical footprint identical across all parts?

A: Yes. All parts share identical length and width dimensions of 0.126" L x 0.098" W (3.20mm x 2.50mm) and use the same 4-SMD, No Lead package. Seated height varies: TC-12.000MBD-T at 0.031", 7X-12.000MBD-T at 0.043", and both Abracon and Suntsu parts at 0.047".

Q: Can I mix different substitute parts in the same production run?

A: All substitutes meet identical electrical specifications and operate within the same temperature range. However, seated height differences may require separate PCB design or assembly process validation for each part number to ensure consistent manufacturing quality.