TC-35.328MBD-T MEMS Oscillator Equivalent & Substitute Parts

Part Overview

The TC-35.328MBD-T is a 35.328 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 measuring 3.20mm × 2.50mm. The TC-35.328MBD-T is classified as Obsolete, making identification of compatible substitute parts essential for ongoing design support and procurement continuity.

Substiute Parts

TC-35.328MBD-T

TXC CORPORATIONIn Stock: 939TC-35.328MBD-T Datasheet

Current PartRFQ

7X-35.328MBD-T

TXC CORPORATIONIn Stock: 10157X-35.328MBD-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TC-35.328MBD-T is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 35.328 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: 3.20mm × 2.50mm
• Mounting Type: Surface Mount
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute part 7X-35.328MBD-T meets all mandatory matching parameters. The primary difference lies in the base resonator technology (Crystal vs. MEMS) and maximum supply current specification, which do not preclude functional substitution in applications designed for the TC-35.328MBD-T.

Parameter Comparison

Engineering Selection Recommendations

The 7X-35.328MBD-T is the direct substitute for the obsolete TC-35.328MBD-T. Both parts are manufactured by TXC CORPORATION and share identical electrical specifications for frequency, output type, supply voltage, function, frequency stability, and operating temperature range.

Selection Basis:

1. Product Status: The TC-35.328MBD-T is Obsolete. The 7X-35.328MBD-T is Active, ensuring long-term availability and procurement reliability.

2. Compliance: The 7X-35.328MBD-T carries RoHS Compliant certification, meeting modern regulatory requirements. Both parts are classified as EAR99 and share identical HTSUS codes.

3. Physical Compatibility: Both parts use identical 4-SMD, No Lead packaging with 3.20mm × 2.50mm footprints. The 7X-35.328MBD-T seated height is 1.10mm compared to 0.80mm for the TC-35.328MBD-T. This 0.30mm difference must be evaluated against PCB clearance constraints in the target application.

4. Electrical Compatibility: The 7X-35.328MBD-T maximum supply current is 15mA, compared to 25mA for the TC-35.328MBD-T. This lower current specification is compatible with applications designed for the original part, as it represents reduced power consumption.

5. Resonator Technology: The TC-35.328MBD-T uses MEMS resonator technology, while the 7X-35.328MBD-T uses Crystal resonator technology. Both deliver identical frequency stability (±25ppm) and operating characteristics within the specified temperature range.

Frequently Asked Questions (FAQ)

Q: Can the 7X-35.328MBD-T directly replace the TC-35.328MBD-T without PCB modifications?

A: The 7X-35.328MBD-T is electrically and functionally equivalent to the TC-35.328MBD-T. Both parts share identical footprints (3.20mm × 2.50mm) and 4-SMD, No Lead packaging. However, the seated height differs by 0.30mm (0.80mm vs. 1.10mm). PCB clearance above the component must be verified to ensure no interference with overlying components or enclosure elements.

Q: What is the significance of the resonator technology difference (MEMS vs. Crystal)?

A: Both MEMS and Crystal resonators in these parts deliver the same frequency stability specification (±25ppm) and operating temperature range (-40°C ~ 85°C). The resonator technology difference does not affect functional compatibility or electrical performance in applications designed for either part.

Q: Why is the maximum supply current lower in the 7X-35.328MBD-T?

A: The 7X-35.328MBD-T specifies 15mA maximum supply current compared to 25mA for the TC-35.328MBD-T. This represents improved power efficiency in the substitute part. Applications designed for the TC-35.328MBD-T will operate within the lower current specification of the 7X-35.328MBD-T.

Q: Are there any compliance or regulatory differences between these parts?

A: The 7X-35.328MBD-T is RoHS Compliant, while RoHS status is not specified for the TC-35.328MBD-T. Both parts share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications. The 7X-35.328MBD-T carries REACH Unaffected status.

Q: What packaging formats are available for the 7X-35.328MBD-T?

A: The 7X-35.328MBD-T is supplied in Tape & Reel (TR) packaging format, suitable for automated assembly processes. The TC-35.328MBD-T packaging format is not specified in the provided data.

Q: Is the 7X-35.328MBD-T suitable for new designs?

A: Yes. The 7X-35.328MBD-T is classified as Active product status, ensuring availability for both replacement and new design applications. It meets modern compliance standards including RoHS certification.