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7C-25.000MCA-T CMOS Oscillator Equivalent & Substitute Parts
Part Overview
The 7C-25.000MCA-T is a 25 MHz XO (Standard) CMOS oscillator manufactured by TXC CORPORATION. This surface mount crystal oscillator operates at 2.5V supply voltage with Enable/Disable functionality, designed for applications requiring stable frequency generation in compact form factors. The part is Active status and RoHS Compliant, making it suitable for modern electronic assemblies. Substitute parts may be required due to inventory availability, packaging format preferences, or specific application constraints while maintaining electrical and mechanical compatibility.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Frequency | 25 MHz |
| Output Type | CMOS |
| Supply Voltage | 2.5V |
| Function | Enable/Disable |
| Frequency Stability | ±25ppm (Main Part) / ±50ppm (Substitute) |
| Operating Temperature Range | -10°C ~ 70°C |
| Maximum Supply Current | 30mA |
| Package Type | 4-SMD, No Lead |
| Physical Dimensions | 5.00mm L x 3.20mm W x 1.40mm H (Max) |
| Mounting Type | Surface Mount |
| RoHS Compliance | Compliant |
| Moisture Sensitivity Level | MSL 1 (Unlimited) |
Substitute Part Grouping Explanation
The 7C-25.000MCB-T qualifies as an equivalent substitute for the 7C-25.000MCA-T based on the following criteria:
Matching Parameters (Substitution Basis):
- Identical frequency: 25 MHz
- Identical output type: CMOS
- Identical supply voltage: 2.5V
- Identical function: Enable/Disable
- Identical operating temperature range: -10°C ~ 70°C
- Identical maximum supply current: 30mA
- Identical package type: 4-SMD, No Lead
- Identical physical dimensions: 5.00mm x 3.20mm x 1.40mm (Max)
- Identical mounting type: Surface Mount
- Identical RoHS compliance status
- Identical MSL rating: 1 (Unlimited)
Differing Parameters:
- Frequency Stability: 7C-25.000MCA-T specifies ±25ppm; 7C-25.000MCB-T specifies ±50ppm
- Packaging Format: 7C-25.000MCA-T uses standard packaging; 7C-25.000MCB-T uses Tape & Reel (TR)
Both parts are manufactured by TXC CORPORATION within the same 7C series and maintain Active product status.
Parameter Comparison
| Parameter | 7C-25.000MCA-T (Main) | 7C-25.000MCB-T (Substitute) | Compatibility |
|---|---|---|---|
| Manufacturer | TXC CORPORATION | TXC CORPORATION | Identical |
| Series | 7C | 7C | Identical |
| Frequency | 25 MHz | 25 MHz | Identical |
| Output Type | CMOS | CMOS | Identical |
| Supply Voltage | 2.5V | 2.5V | Identical |
| Function | Enable/Disable | Enable/Disable | Identical |
| Frequency Stability | ±25ppm | ±50ppm | Substitute has wider tolerance |
| Operating Temperature | -10°C ~ 70°C | -10°C ~ 70°C | Identical |
| Supply Current (Max) | 30mA | 30mA | Identical |
| Package Type | 4-SMD, No Lead | 4-SMD, No Lead | Identical |
| Dimensions | 5.00mm x 3.20mm x 1.40mm (Max) | 5.00mm x 3.20mm x 1.40mm (Max) | Identical |
| Mounting Type | Surface Mount | Surface Mount | Identical |
| Product Status | Active | Active | Identical |
| RoHS Compliance | Compliant | Compliant | Identical |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) | Identical |
| Packaging Format | Standard | Tape & Reel (TR) | Different format |
| Inventory Status | 699 Pcs New Original | 7660 Pcs New Original | Substitute has higher availability |
Engineering Selection Recommendations
7C-25.000MCA-T Selection Criteria:
- Applications requiring frequency stability of ±25ppm or tighter
- Standard packaging format requirements
- Lower volume procurement needs
7C-25.000MCB-T Selection Criteria:
- Applications tolerating frequency stability of ±50ppm
- High-volume production requiring Tape & Reel packaging format
- Significantly higher inventory availability (7660 Pcs vs. 699 Pcs)
- Cost optimization through bulk packaging format
Both parts maintain identical electrical performance in core parameters: frequency, output type, supply voltage, function, operating temperature range, and supply current. Both are Active status products with full RoHS compliance and MSL 1 rating, ensuring compliance with modern manufacturing and environmental standards. The primary differentiation is frequency stability tolerance and packaging format. Selection should be based on application frequency stability requirements and procurement volume strategy.
Frequently Asked Questions (FAQ)
Q: Can 7C-25.000MCB-T replace 7C-25.000MCA-T in all applications?
A: Electrical substitution is valid for applications where ±50ppm frequency stability is acceptable. If the original design specifies ±25ppm stability, the substitute may not meet performance requirements. Verify frequency stability tolerance in your circuit design specifications before substitution.
Q: What is the difference between standard packaging and Tape & Reel (TR) format?
A: Standard packaging typically uses individual component packaging suitable for small-quantity orders. Tape & Reel format winds components on continuous tape for automated assembly equipment, optimized for high-volume production. Both formats contain identical components; the difference is in delivery and handling method.
Q: Are both parts pin-compatible?
A: Yes. Both parts use identical 4-SMD, No Lead package type with matching physical dimensions (5.00mm x 3.20mm x 1.40mm Max). PCB footprints and solder pad layouts are identical, ensuring direct mechanical and electrical compatibility.
Q: Do both parts have the same supply current requirements?
A: Yes. Both parts specify maximum supply current of 30mA at 2.5V supply voltage. Power consumption characteristics are identical.
Q: What is MSL 1 rating significance?
A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life without moisture control requirements. Both parts can be stored and handled without special desiccant packaging or moisture-controlled environments.
Q: Are both parts RoHS compliant?
A: Yes. Both 7C-25.000MCA-T and 7C-25.000MCB-T are RoHS Compliant, meeting EU Directive 2011/65/EU requirements for restricted hazardous substances.
Q: Which part should I select for new designs?
A: For new designs, evaluate your frequency stability requirements. If ±50ppm is acceptable, 7C-25.000MCB-T offers superior inventory availability and Tape & Reel packaging efficiency. If ±25ppm stability is mandatory, specify 7C-25.000MCA-T.
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