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7V-27.000MEEV-T Crystal Equivalent & Substitute Parts
Part Overview
The 7V-27.000MEEV-T is a 27 MHz fundamental mode crystal oscillator manufactured by TXC CORPORATION, designed for surface mount applications in 4-SMD, No Lead packaging. This active product operates across -20°C to 70°C with ±30ppm frequency stability and 8pF load capacitance. Alternative equivalent and substitute parts are available to support design flexibility, inventory optimization, and supply chain continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Frequency | 27 MHz |
| Frequency Stability | ±30ppm |
| Load Capacitance | 8pF |
| ESR (Equivalent Series Resistance) | 60 Ohms |
| Operating Mode | Fundamental |
| Operating Temperature Range | -20°C ~ 70°C |
| Mounting Type | Surface Mount |
| Package / Case | 4-SMD, No Lead |
| Size / Dimension | 0.126" L x 0.098" W (3.20mm x 2.50mm) |
| Height - Seated (Max) | 0.035" (0.90mm) |
| RoHS Status | RoHS Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution relationships for the 7V-27.000MEEV-T are determined by the following critical parameters: frequency (27 MHz), frequency stability (±30ppm), load capacitance (8pF), operating mode (Fundamental), operating temperature range (-20°C ~ 70°C), package type (4-SMD, No Lead), and RoHS compliance status.
Parametric Equivalent: The 7V-27.000MAAV-T from TXC CORPORATION maintains identical electrical specifications including 27 MHz frequency, ±30ppm stability, 8pF load capacitance, and 60 Ohms ESR. Both parts share the same package footprint and thermal operating range, differing only in packaging format (Tape & Reel).
Similar Substitutes: The XZAEECNANF-27.000000 and XZLEECNANF-27.000000 from Taitien provide functional equivalence at the 27 MHz frequency with ±30ppm stability and Fundamental operating mode. These parts differ in load capacitance (XZAEECNANF: 8pF; XZLEECNANF: 6pF), ESR (100 Ohms versus 60 Ohms), physical dimensions, and packaging format (Cut Tape).
Parameter Comparison
| Parameter | 7V-27.000MEEV-T | 7V-27.000MAAV-T | XZAEECNANF-27.000000 | XZLEECNANF-27.000000 |
|---|---|---|---|---|
| Manufacturer | TXC CORPORATION | TXC CORPORATION | Taitien | Taitien |
| Frequency | 27 MHz | 27 MHz | 27 MHz | 27 MHz |
| Frequency Stability | ±30ppm | ±30ppm | ±30ppm | ±30ppm |
| Frequency Tolerance | ±30ppm | ±30ppm | ±30ppm | ±30ppm |
| Load Capacitance | 8pF | 8pF | 8pF | 6pF |
| ESR (Equivalent Series Resistance) | 60 Ohms | 60 Ohms | 100 Ohms | 100 Ohms |
| Operating Mode | Fundamental | Fundamental | Fundamental | Fundamental |
| Operating Temperature | -20°C ~ 70°C | -20°C ~ 70°C | -20°C ~ 70°C | -20°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 4-SMD, No Lead | 4-SMD, No Lead | 4-SMD, No Lead | 4-SMD, No Lead |
| Size / Dimension | 0.126" L x 0.098" W (3.20mm x 2.50mm) | 0.126" L x 0.098" W (3.20mm x 2.50mm) | 0.081" L x 0.065" W (2.05mm x 1.65mm) | 0.081" L x 0.065" W (2.05mm x 1.65mm) |
| Height - Seated (Max) | 0.035" (0.90mm) | 0.035" (0.90mm) | 0.022" (0.55mm) | 0.022" (0.55mm) |
| RoHS Status | RoHS Compliant | RoHS Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Packaging | Tape & Reel (TR) | Tape & Reel (TR) | Cut Tape (CT) | Cut Tape (CT) |
Engineering Selection Recommendations
Direct Equivalent (7V-27.000MAAV-T): This TXC CORPORATION part provides complete electrical and mechanical equivalence to the 7V-27.000MEEV-T. Both parts maintain RoHS Compliance status and identical load capacitance and ESR specifications. Selection between these two parts depends on packaging requirements: Tape & Reel format for high-volume automated assembly or alternative inventory availability.
Alternative Substitutes (Taitien XZAEECNANF-27.000000 and XZLEECNANF-27.000000): These parts maintain the critical 27 MHz frequency and ±30ppm stability across the required operating temperature range. Both achieve ROHS3 Compliance. Physical dimensions are smaller (2.05mm x 1.65mm versus 3.20mm x 2.50mm), and ESR is higher at 100 Ohms. The XZLEECNANF-27.000000 operates at 6pF load capacitance rather than 8pF. These differences require circuit-level evaluation for compatibility with oscillator tank circuit design and frequency tuning requirements.
Frequently Asked Questions (FAQ)
Q: Can the 7V-27.000MAAV-T directly replace the 7V-27.000MEEV-T?
A: Yes. Both parts are manufactured by TXC CORPORATION with identical electrical specifications (27 MHz, ±30ppm stability, 8pF load capacitance, 60 Ohms ESR) and mechanical footprint (3.20mm x 2.50mm, 4-SMD No Lead package). The difference is packaging format: Tape & Reel versus alternative reel configuration.
Q: What are the key differences between TXC and Taitien crystal options?
A: TXC parts (7V-27.000MEEV-T and 7V-27.000MAAV-T) maintain 60 Ohms ESR and 8pF load capacitance. Taitien parts (XZAEECNANF-27.000000 and XZLEECNANF-27.000000) feature 100 Ohms ESR and smaller physical dimensions (2.05mm x 1.65mm). The XZLEECNANF-27.000000 operates at 6pF load capacitance. All maintain 27 MHz frequency and ±30ppm stability.
Q: Are the Taitien crystals physically compatible with the same PCB footprint?
A: No. Taitien parts measure 2.05mm x 1.65mm with 0.022" maximum seated height, while TXC parts measure 3.20mm x 2.50mm with 0.035" maximum seated height. PCB layout and footprint design must accommodate the smaller Taitien package dimensions.
Q: How does load capacitance affect substitution?
A: Load capacitance determines the oscillator tank circuit tuning and frequency accuracy. The 7V-27.000MEEV-T and 7V-27.000MAAV-T both specify 8pF load capacitance. The XZLEECNANF-27.000000 operates at 6pF, requiring circuit re-evaluation. The XZAEECNANF-27.000000 maintains 8pF compatibility.
Q: What is the significance of ESR differences?
A: ESR (Equivalent Series Resistance) affects oscillator startup characteristics and power consumption. TXC parts specify 60 Ohms ESR; Taitien parts specify 100 Ohms ESR. Higher ESR may impact oscillator circuit performance and should be evaluated against specific circuit design requirements.
Q: Are all substitute parts RoHS compliant?
A: Yes. The 7V-27.000MEEV-T and 7V-27.000MAAV-T are RoHS Compliant. The Taitien parts (XZAEECNANF-27.000000 and XZLEECNANF-27.000000) are ROHS3 Compliant. All parts maintain MSL 1 (Unlimited) moisture sensitivity rating.
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