TA-19.440MBD-T Equivalent & Substitute Parts

Part Overview

The TA-19.440MBD-T is a 19.44 MHz MEMS-based XO (Standard) oscillator manufactured by TXC CORPORATION. This component operates at 3.3V with CMOS output, Enable/Disable function, and is housed in a 4-SMD, No Lead package. The part is classified as Obsolete, making identification of equivalent and substitute components essential for design continuity and procurement planning.

Substiute Parts

TA-19.440MBD-T

TXC CORPORATIONIn Stock: 1057TA-19.440MBD-T Datasheet

Current PartRFQ

510CBA19M4400AAGR

Skyworks Solutions Inc.In Stock: 872510CBA19M4400AAGR Datasheet

DirectRFQ

ASVMPC-19.440MHZ-LR-T

Abracon LLCIn Stock: 986ASVMPC-19.440MHZ-LR-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TA-19.440MBD-T are identified based on strict alignment with the following critical parameters:

Primary Matching Criteria:

• Frequency: 19.44 MHz (exact match required)
• Output: CMOS
• Function: Enable/Disable capability
• Operating Temperature: -40°C ~ 85°C (minimum requirement)
• Frequency Stability: ±25ppm or better
• Mounting: Surface Mount
• Physical footprint compatibility: 7.00mm x 5.00mm base dimensions

Substitution Logic: Two substitute parts meet these criteria with varying degrees of compatibility. The 510CBA19M4400AAGR (Skyworks Solutions Inc.) uses a Crystal resonator instead of MEMS but maintains identical electrical specifications and package footprint. The ASVMPC-19.440MHZ-LR-T (Abracon LLC) uses MEMS resonator technology matching the original but operates across a wider voltage range (2.25V ~ 3.6V) and uses a 6-SMD package with exposed pad, introducing package-level differences.

Parameter Comparison

Engineering Selection Recommendations

510CBA19M4400AAGR (Skyworks Solutions Inc.) - Direct Substitute:

This part is classified as Active and represents the most direct electrical substitute. It maintains identical frequency (19.44 MHz), supply voltage (3.3V), frequency stability (±25ppm), operating temperature range (-40°C ~ 85°C), and package footprint (7.00mm x 5.00mm). The primary difference is the use of Crystal resonator technology instead of MEMS. The maximum supply current is marginally higher at 26mA versus 25mA. The package height increases to 1.80mm compared to 1.00mm, which may impact designs with strict height constraints. This part is suitable for applications where the original MEMS technology is not a requirement and PCB height clearance permits the increased profile.

ASVMPC-19.440MHZ-LR-T (Abracon LLC) - Functional Equivalent:

This part is classified as Active and maintains MEMS resonator technology matching the original design approach. It operates across a wider supply voltage range (2.25V ~ 3.6V), providing greater flexibility for multi-voltage systems. The operating temperature range (-40°C ~ 85°C) and frequency (19.44 MHz) are identical. However, this part uses a 6-SMD package with exposed pad instead of the 4-SMD configuration, requiring PCB layout modification. The maximum supply current is higher at 35mA. The package height is lower at 0.90mm, beneficial for space-constrained applications. This part carries ROHS3 compliance certification. Substitution requires PCB redesign to accommodate the different pad configuration.

Selection Criteria:

• For direct PCB compatibility without layout changes: Select 510CBA19M4400AAGR if height clearance of 1.80mm is acceptable.
• For MEMS technology retention with regulatory compliance: Select ASVMPC-19.440MHZ-LR-T if PCB layout modification is feasible and ROHS3 compliance is required.
• For lowest profile applications: Select ASVMPC-19.440MHZ-LR-T (0.90mm height).
• For lowest power consumption in disable mode: Select 510CBA19M4400AAGR (18mA disable current).

Frequently Asked Questions (FAQ)

Q: Can the 510CBA19M4400AAGR be used as a direct replacement without PCB modifications?

A: The 510CBA19M4400AAGR maintains the same 4-SMD, No Lead package footprint and 7.00mm x 5.00mm dimensions as the TA-19.440MBD-T. However, the increased height of 1.80mm versus 1.00mm must be verified against PCB clearance requirements. If vertical clearance is available, no PCB layout modifications are required.

Q: What is the key difference between the two substitute parts?

A: The 510CBA19M4400AAGR uses Crystal resonator technology, while the ASVMPC-19.440MHZ-LR-T uses MEMS technology matching the original. The Abracon part also uses a 6-SMD package with exposed pad instead of 4-SMD, requiring PCB redesign. The Abracon part offers wider voltage range support (2.25V ~ 3.6V) and ROHS3 compliance.

Q: Is frequency stability guaranteed for the ASVMPC-19.440MHZ-LR-T?

A: The frequency stability specification is not provided in the technical data for the ASVMPC-19.440MHZ-LR-T. The TA-19.440MBD-T and 510CBA19M4400AAGR both specify ±25ppm. Frequency stability must be confirmed with Abracon technical documentation before selection for applications with strict stability requirements.

Q: Which substitute part has lower power consumption?

A: The 510CBA19M4400AAGR has lower maximum supply current (26mA) and significantly lower disable mode current (18mA) compared to the ASVMPC-19.440MHZ-LR-T (35mA maximum, 22mA disable). For power-sensitive applications, the Skyworks part is preferred.

Q: Can both substitute parts operate at 3.3V?

A: Yes. The 510CBA19M4400AAGR operates at fixed 3.3V. The ASVMPC-19.440MHZ-LR-T operates across 2.25V ~ 3.6V, which includes 3.3V operation. Both are compatible with 3.3V supply systems.

Q: What is the impact of the package change from 4-SMD to 6-SMD?

A: The ASVMPC-19.440MHZ-LR-T uses a 6-SMD package with exposed pad instead of 4-SMD, No Lead. This requires PCB footprint redesign, including pad layout and thermal management considerations. The exposed pad provides improved thermal performance. This substitution is not suitable for designs where PCB modifications cannot be accommodated.

Q: Are both substitute parts in active production?

A: Yes. Both the 510CBA19M4400AAGR (Skyworks Solutions Inc.) and ASVMPC-19.440MHZ-LR-T (Abracon LLC) are classified as Active products with current inventory availability, ensuring long-term supply reliability compared to the Obsolete TA-19.440MBD-T.