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8Y-26.000MEEC-T 26 MHz Crystal Equivalent & Substitute Parts
Part Overview
The 8Y-26.000MEEC-T is a 26 MHz fundamental mode crystal oscillator manufactured by TXC CORPORATION, designed for surface mount applications in 4-SMD, No Lead package configuration. This Active product operates across the -20°C to 70°C temperature range with ±10ppm frequency stability and tolerance specifications. The part is RoHS Compliant with MSL 1 (Unlimited) moisture sensitivity rating.
Substitute parts are identified to address inventory availability, lead time requirements, or specific application constraints while maintaining electrical and mechanical compatibility within the defined parameter tolerance bands.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Frequency | 26.0000 | MHz |
| Frequency Stability | ±10 | ppm |
| Frequency Tolerance | ±10 | ppm |
| Load Capacitance | 9 | pF |
| ESR (Equivalent Series Resistance) | 100 | Ohms |
| Operating Mode | Fundamental | — |
| Operating Temperature Range | -20 to 70 | °C |
| Mounting Type | Surface Mount | — |
| Package / Case | 4-SMD, No Lead | — |
| RoHS Status | RoHS Compliant | — |
| MSL Rating | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution eligibility for the 8Y-26.000MEEC-T is determined by the following critical parameters:
Primary Matching Criteria:
- Frequency: 26.0000 MHz (exact match required)
- Frequency Stability: ±10ppm (exact match required)
- Frequency Tolerance: ±10ppm (exact match required)
- Operating Mode: Fundamental (exact match required)
- Operating Temperature Range: -20°C to 70°C (exact match or wider range acceptable)
- Mounting Type: Surface Mount (exact match required)
- Package / Case: 4-SMD, No Lead (exact match required)
Secondary Compatibility Parameters:
- Load Capacitance: 7pF to 10pF range (circuit-dependent; verify application requirements)
- ESR: 60 to 150 Ohms (circuit-dependent; verify application requirements)
- Physical Dimensions: Variations permitted within PCB layout constraints
- RoHS Compliance: All substitutes maintain RoHS3 or RoHS Compliant status
All identified substitute parts maintain the core electrical specifications (26 MHz, ±10ppm stability/tolerance, fundamental mode operation, -20°C to 70°C temperature range) and surface mount 4-SMD, No Lead package configuration. Variations in load capacitance and ESR are documented for circuit design verification.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Frequency (MHz) | Frequency Stability (ppm) | Load Capacitance (pF) | ESR (Ohms) | Operating Temp (°C) | Package | RoHS Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|
| 8Y-26.000MEEC-T | TXC CORPORATION | 26.0000 | ±10 | 9 | 100 | -20 to 70 | 4-SMD, No Lead | RoHS Compliant | 993 |
| 8Q-26.000MEEY-T | FTS | 26.0000 | ±10 | 7 | 100 | -20 to 70 | 4-SMD, No Lead | RoHS Compliant | 3705 |
| 8Z-26.000MEEQ-T | TXC CORPORATION | 26.0000 | ±10 | 10 | 100 | -20 to 70 | 4-SMD, No Lead | RoHS Compliant | 31254 |
| ABM12-115-26.000MHZ-T3 | Abracon LLC | 26.0000 | ±10 | 8 | 100 | -20 to 70 | 4-SMD, No Lead | ROHS3 Compliant | 14269 |
| ABM12W-26.0000MHZ-7-B1U-T3 | Abracon LLC | 26.0000 | ±10 | 7 | 100 | -20 to 70 | 4-SMD, No Lead | ROHS3 Compliant | 1616 |
| ABM12W-26.0000MHZ-8-B1U-T3 | Abracon LLC | 26.0000 | ±10 | 8 | 100 | -20 to 70 | 4-SMD, No Lead | ROHS3 Compliant | 1125 |
| ECS-260-8-37CKM | ECS Inc. | 26.0000 | ±10 | 8 | 60 | -20 to 70 | 4-SMD, No Lead | ROHS3 Compliant | 1539 |
| ECS-260-8-47-CKM-TR | ECS Inc. | 26.0000 | ±10 | 8 | 100 | -20 to 70 | 4-SMD, No Lead | ROHS3 Compliant | 19491 |
| ECS-260-8-47Q-CKM-TR | ECS Inc. | 26.0000 | ±10 | 8 | 150 | -20 to 70 | 4-SMD, No Lead | ROHS3 Compliant | 1744 |
| ECS-260-9-47-CKM-TR | ECS Inc. | 26.0000 | ±10 | 9 | 100 | -20 to 70 | 4-SMD, No Lead | ROHS3 Compliant | 6826 |
| Q 26,0-JXS21-10-10/10-FU-WA-LF | Jauch Quartz | 26.0000 | ±10 | 10 | 60 | -20 to 70 | 4-SMD, No Lead | ROHS3 Compliant | 4188 |
Engineering Selection Recommendations
Direct Electrical Equivalents (9pF Load Capacitance, 100 Ohms ESR):
The ECS-260-9-47-CKM-TR provides the closest electrical match to the 8Y-26.000MEEC-T, with identical load capacitance (9pF) and ESR (100 Ohms). Both parts maintain 26 MHz ±10ppm specifications and -20°C to 70°C operating range. The ECS-260-9-47-CKM-TR carries ROHS3 Compliant status and offers significantly higher inventory availability (6826 pcs vs. 993 pcs).
High-Availability Alternatives (Load Capacitance Variation):
The 8Z-26.000MEEQ-T (TXC CORPORATION, 10pF, 100 Ohms) and ECS-260-8-47-CKM-TR (ECS Inc., 8pF, 100 Ohms) maintain identical ESR and frequency specifications. These parts are suitable for applications where load capacitance tolerance permits ±1pF variation from the primary specification. The 8Z-26.000MEEQ-T offers the highest inventory level (31254 pcs).
ESR-Variant Options:
Parts with differing ESR values (ECS-260-8-37CKM at 60 Ohms, ECS-260-8-47Q-CKM-TR at 150 Ohms, Q 26,0-JXS21-10-10/10-FU-WA-LF at 60 Ohms) are suitable only for applications where circuit design accommodates ESR variation. These selections require verification against oscillator circuit specifications.
Compliance Status:
All substitute parts maintain RoHS3 Compliant or RoHS Compliant status. The 8Y-26.000MEEC-T, 8Z-26.000MEEQ-T, ECS-260-8-37CKM, ECS-260-8-47-CKM-TR, ECS-260-8-47Q-CKM-TR, ECS-260-9-47-CKM-TR, and Q 26,0-JXS21-10-10/10-FU-WA-LF all carry REACH Unaffected status and EAR99 ECCN classification.
Frequently Asked Questions (FAQ)
Q: Can I substitute the 8Y-26.000MEEC-T with a part having different load capacitance (7pF, 8pF, or 10pF)?
A: Load capacitance substitution is application-dependent. The 8Y-26.000MEEC-T specifies 9pF load capacitance. Parts with 7pF, 8pF, or 10pF load capacitance will operate at the specified 26 MHz frequency only when the oscillator circuit is designed for that specific load capacitance value. Verify your circuit design documentation before selecting an alternative load capacitance value.
Q: What is the difference between the 8Y-26.000MEEC-T and ECS-260-9-47-CKM-TR?
A: Both parts share identical electrical specifications: 26 MHz, ±10ppm frequency stability and tolerance, 9pF load capacitance, 100 Ohms ESR, and -20°C to 70°C operating range. The primary differences are manufacturer (TXC CORPORATION vs. ECS Inc.), package dimensions (2.00mm x 1.60mm vs. 1.60mm x 1.20mm), and inventory availability (993 pcs vs. 6826 pcs). Both are RoHS Compliant and suitable for direct substitution in circuit applications designed for 9pF load capacitance.
Q: Are all substitute parts available in Tape & Reel packaging?
A: Most substitute parts are supplied in Tape & Reel (TR) packaging. The exception is ECS-260-8-37CKM, which is supplied in Cut Tape (CT) packaging. Verify packaging requirements for your assembly process before component selection.
Q: What does ESR variation mean for my application?
A: ESR (Equivalent Series Resistance) affects oscillator startup characteristics and power consumption. The 8Y-26.000MEEC-T specifies 100 Ohms ESR. Substitute parts with 60 Ohms ESR (ECS-260-8-37CKM, Q 26,0-JXS21-10-10/10-FU-WA-LF) will exhibit lower resistance, while parts with 150 Ohms ESR (ECS-260-8-47Q-CKM-TR) will exhibit higher resistance. ESR-variant substitutions require oscillator circuit verification to ensure stable operation and acceptable power consumption.
Q: Do all substitute parts meet the same compliance requirements as the 8Y-26.000MEEC-T?
A: All identified substitute parts maintain RoHS3 Compliant or RoHS Compliant status, REACH Unaffected classification, and EAR99 ECCN designation, matching the compliance profile of the 8Y-26.000MEEC-T. MSL ratings are consistent across all parts (MSL 1 - Unlimited moisture sensitivity).
Q: Which substitute part offers the best inventory availability?
A: The 8Z-26.000MEEQ-T (TXC CORPORATION) offers the highest inventory level at 31254 pcs. This part differs from the 8Y-26.000MEEC-T only in load capacitance (10pF vs. 9pF) and physical dimensions. The ECS-260-8-47-CKM-TR (19491 pcs) provides the second-highest availability with 8pF load capacitance.
Q: Can I use a 7pF load capacitance part as a substitute?
A: The 8Q-26.000MEEY-T (FTS, 7pF) and ABM12W-26.0000MHZ-7-B1U-T3 (Abracon LLC, 7pF) both specify 7pF load capacitance. These parts are suitable only if your oscillator circuit is designed for 7pF load capacitance. Do not substitute without circuit design verification.
Q: What is the difference between ROHS3 Compliant and RoHS Compliant designations?
A: Both designations indicate compliance with RoHS (Restriction of Hazardous Substances) regulations. ROHS3 Compliant indicates compliance with the most recent RoHS 3 directive. All substitute parts meet current RoHS compliance requirements and are suitable for applications requiring RoHS-compliant components.
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