7R-26.000MEEC-T Crystal Equivalent & Substitute Parts

Part Overview

The 7R-26.000MEEC-T is a 26 MHz surface mount crystal manufactured by TXC CORPORATION. This component is a fundamental mode oscillator with a 9pF load capacitance and 150 Ohms equivalent series resistance, packaged in a 4-SMD, No Lead configuration. The part is Active in product status and RoHS Compliant with MSL 1 rating, indicating unlimited moisture sensitivity protection.

Substitute parts are identified when equivalent electrical and mechanical parameters allow direct replacement in circuit applications without performance degradation. The primary substitution criterion for this crystal category is frequency matching combined with compatible load capacitance and ESR specifications within the same package footprint.

Substiute Parts

7R-26.000MEEC-T

TXC CORPORATIONIn Stock: 14457R-26.000MEEC-T Datasheet

Current PartRFQ

7R-26.000MEEY-T

TXC CORPORATIONIn Stock: 38327R-26.000MEEY-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 7R-26.000MEEC-T is determined by the following critical parameters:

Frequency Match: The substitute part must operate at 26.0000 MHz to maintain circuit timing specifications.

Load Capacitance Compatibility: While the main part specifies 9pF load capacitance, substitute parts with lower load capacitance values (such as 7pF) remain functionally compatible within the same frequency specification, as load capacitance affects the tuning characteristics of the oscillator circuit rather than the fundamental frequency output.

ESR Specification: The 150 Ohms ESR must be maintained to ensure consistent oscillation startup and stability characteristics.

Package and Mounting Compatibility: Both parts must share identical 4-SMD, No Lead package configuration with matching footprint dimensions (0.081" L x 0.065" W / 2.05mm x 1.65mm) and maximum seated height (0.024" / 0.60mm) to ensure PCB assembly compatibility.

Compliance and Certifications: RoHS Compliance and MSL 1 rating must be maintained across all substitute selections.

Parameter Comparison

Engineering Selection Recommendations

Both the 7R-26.000MEEC-T and 7R-26.000MEEY-T are Active products manufactured by TXC CORPORATION with identical RoHS Compliance and MSL 1 ratings. Both components meet the same regulatory and environmental standards.

The primary difference between these parts is load capacitance: 9pF versus 7pF. This difference does not affect the fundamental frequency output of 26.0000 MHz. Load capacitance specification relates to the external circuit tuning capacitance required for optimal oscillation; circuits designed for either load capacitance value will operate at the specified frequency.

Both parts share identical package footprints, ESR characteristics, and mounting specifications, ensuring direct PCB-level compatibility. Selection between these parts should be based on circuit design requirements and load capacitance specifications established during oscillator circuit design.

Frequently Asked Questions (FAQ)

Q: Can the 7R-26.000MEEY-T (7pF) substitute for the 7R-26.000MEEC-T (9pF) in the same circuit?

A: Direct substitution depends on the oscillator circuit design. If the circuit was designed for 9pF load capacitance, the 7pF part will alter the tuning characteristics. Substitution is valid only if the circuit design accommodates 7pF load capacitance or if the circuit includes tuning capacitors that can be adjusted to compensate for the load capacitance difference.

Q: Are the package dimensions identical between these two parts?

A: Yes. Both parts use the 4-SMD, No Lead package with dimensions of 0.081" L x 0.065" W (2.05mm x 1.65mm) and maximum seated height of 0.024" (0.60mm). PCB footprints and assembly processes are identical.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the 7R-26.000MEEC-T and 7R-26.000MEEY-T are RoHS Compliant with MSL 1 (Unlimited) moisture sensitivity rating. Both parts meet identical regulatory and environmental requirements.

Q: What is the significance of the 150 Ohms ESR specification?

A: ESR (Equivalent Series Resistance) affects oscillator startup time and stability. Both substitute parts maintain 150 Ohms ESR, ensuring consistent oscillation characteristics and circuit performance.

Q: Will the frequency output change if I substitute the 7pF part for the 9pF part?

A: The fundamental frequency output remains 26.0000 MHz for both parts. Load capacitance affects the external tuning requirements of the oscillator circuit, not the crystal's fundamental frequency specification.