TC-22.1184MBD-T MEMS Oscillator Equivalent & Substitute Parts

Part Overview

The TC-22.1184MBD-T is a 22.1184 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 compatible substitute components essential for ongoing system support and procurement.

Substiute Parts

TC-22.1184MBD-T

TXC CORPORATIONIn Stock: 761TC-22.1184MBD-T Datasheet

Current PartRFQ

7X-22.1184MBD-T

TXC CORPORATIONIn Stock: 11797X-22.1184MBD-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TC-22.1184MBD-T is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 22.1184 MHz (exact match required)
• Output Type: CMOS
• Supply Voltage: 3.3V
• Function: Enable/Disable capability
• Package / Case: 4-SMD, No Lead
• Footprint Dimensions: 0.126" L x 0.098" W (3.20mm x 2.50mm)
• Operating Temperature Range: -40°C ~ 85°C
• Frequency Stability: ±25ppm
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation Parameters:

• Base Resonator Type: MEMS or Crystal (both acceptable for functional equivalence)
• Current - Supply (Max): Substitute must not exceed 25mA maximum; lower values are acceptable
• Height - Seated (Max): Substitute height must not exceed available PCB clearance; minor variations acceptable if within assembly constraints

The 7X-22.1184MBD-T qualifies as a direct substitute based on matching all mandatory parameters while maintaining functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 7X-22.1184MBD-T

The 7X-22.1184MBD-T is the qualified substitute for the obsolete TC-22.1184MBD-T. Selection is based on the following engineering criteria:

1. Product Status: The 7X-22.1184MBD-T maintains Active product status, ensuring continued availability and manufacturer support, whereas the TC-22.1184MBD-T is Obsolete.

2. Electrical Equivalence: Both parts operate at identical frequency (22.1184 MHz), supply voltage (3.3V), output type (CMOS), and frequency stability (±25ppm). The substitute's lower maximum supply current (15mA vs. 25mA) represents an improvement in power efficiency without functional compromise.

3. Mechanical Compatibility: Both parts share identical footprint dimensions (0.126" L x 0.098" W / 3.20mm x 2.50mm) and package type (4-SMD, No Lead). The substitute exhibits a slightly increased seated height (0.043" vs. 0.031"), which must be evaluated against available PCB clearance in the target application.

4. Compliance: The 7X-22.1184MBD-T carries RoHS Compliance and REACH Unaffected status, meeting modern regulatory requirements.

5. Resonator Technology: The transition from MEMS to Crystal-based resonator does not affect functional compatibility, as both technologies deliver equivalent performance within the specified parameters.

Frequently Asked Questions (FAQ)

Q1: Can the 7X-22.1184MBD-T be used as a direct drop-in replacement for the TC-22.1184MBD-T?

A: Yes, the 7X-22.1184MBD-T is electrically and mechanically compatible for direct substitution. Both parts share identical frequency, voltage, output type, function, and footprint. The primary consideration is the increased seated height (0.043" vs. 0.031"), which must be verified against available PCB clearance in your specific assembly.

Q2: What is the difference between MEMS and Crystal-based oscillators in this application?

A: Both MEMS and Crystal resonators deliver equivalent performance within the specified parameters for this 22.1184 MHz oscillator. The choice between technologies does not affect electrical functionality, frequency stability (±25ppm), or operating characteristics in this product category.

Q3: Why is the substitute part's maximum supply current lower (15mA vs. 25mA)?

A: The 7X-22.1184MBD-T operates at a lower maximum supply current, which represents improved power efficiency. This does not indicate reduced capability; rather, it reflects optimized design. The substitute will operate within your power budget if the original design accommodated the 25mA specification.

Q4: Are there any compliance differences between the two parts?

A: The 7X-22.1184MBD-T carries explicit RoHS Compliance and REACH Unaffected certifications. The TC-22.1184MBD-T does not specify these certifications. If your application requires RoHS compliance, the substitute part satisfies this requirement.

Q5: What should I verify before implementing the 7X-22.1184MBD-T substitution?

A: Verify that the increased seated height (0.043" vs. 0.031") does not exceed available clearance above the component on your PCB. Confirm that your power supply can accommodate the 15mA maximum current draw. Validate that your assembly process is compatible with the 4-SMD, No Lead package format.

Q6: Is the 7X-22.1184MBD-T available in the same packaging and quantities as the original part?

A: Both parts use identical 4-SMD, No Lead packaging. Inventory availability differs: the TC-22.1184MBD-T has 730 pieces in stock (Obsolete status), while the 7X-22.1184MBD-T has 1113 pieces in stock (Active status). The Active status of the substitute ensures ongoing availability for future procurement.