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7W-3.6864MBET Equivalent & Substitute Parts
Part Overview
The 7W-3.6864MBET is a 3.6864 MHz crystal oscillator manufactured by TXC CORPORATION, designed for applications requiring CMOS output with enable/disable functionality at 3.3V supply voltage. This component operates across the industrial temperature range of -40°C to 85°C with a frequency stability of ±50ppm.
The 7W-3.6864MBET is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for systems utilizing this oscillator frequency and electrical specification.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Frequency | 3.6864 MHz |
| Output Type | CMOS |
| Supply Voltage | 3.3V |
| Function | Enable/Disable |
| Frequency Stability | ±50ppm |
| Operating Temperature Range | -40°C ~ 85°C |
| Package Type | 4-SMD, No Lead |
| Physical Dimensions | 0.276" L x 0.197" W (7.00mm x 5.00mm) |
| Mounting Type | Surface Mount |
| RoHS Compliance | RoHS Compliant |
| Moisture Sensitivity Level | MSL 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the 7W-3.6864MBET are qualified based on the following critical parameters that determine functional and mechanical compatibility:
Electrical Compatibility Criteria:
- Frequency: 3.6864 MHz (exact match required)
- Output: CMOS (exact match required)
- Supply Voltage: 3.3V (exact match required)
- Function: Enable/Disable (exact match required)
- Frequency Stability: ±50ppm (exact match required)
- Operating Temperature: -40°C ~ 85°C (exact match required)
Mechanical Compatibility Criteria:
- Package: 4-SMD, No Lead (exact match required)
- Physical Dimensions: 0.276" L x 0.197" W / 7.00mm x 5.00mm (exact match required)
- Mounting Type: Surface Mount (exact match required)
Compliance Criteria:
- RoHS Status: RoHS Compliant or higher standard
- Moisture Sensitivity: MSL 1 (Unlimited)
The substitute parts identified below meet all critical electrical, mechanical, and compliance parameters. Both Cardinal Components Inc. FIPO™ CPP series oscillators satisfy the substitution requirements with active product status and enhanced compliance certifications.
Parameter Comparison
| Parameter | 7W-3.6864MBET (TXC) | CPPC7L-A7BP-3.6864TS (Cardinal) | CPPC7LZA7BP-3.68640TS (Cardinal) |
|---|---|---|---|
| Manufacturer | TXC CORPORATION | Cardinal Components Inc. | Cardinal Components Inc. |
| Series | 7W | FIPO™ CPP | FIPO™ CPP |
| Product Status | Obsolete | Active | Active |
| Frequency | 3.6864 MHz | 3.6864 MHz | 3.6864 MHz |
| Output Type | CMOS | CMOS | CMOS |
| Supply Voltage | 3.3V | 3.3V | 3.3V |
| Function | Enable/Disable | Enable/Disable | Enable/Disable |
| Frequency Stability | ±50ppm | ±50ppm | ±50ppm |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Current - Supply (Max) | 20mA | 25mA | 25mA |
| Current - Supply (Disable) (Max) | Not specified | 50µA | 50µA |
| Package / Case | 4-SMD, No Lead | 4-SMD, No Lead | 4-SMD, No Lead |
| Physical Dimensions | 0.276" L x 0.197" W (7.00mm x 5.00mm) | 0.276" L x 0.197" W (7.00mm x 5.00mm) | 0.276" L x 0.197" W (7.00mm x 5.00mm) |
| Height - Seated (Max) | 0.056" (1.42mm) | 0.075" (1.90mm) | 0.075" (1.90mm) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Packaging | Not specified | Tape & Reel (TR) | Tape & Reel (TR) |
| RoHS Status | RoHS Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | MSL 1 (Unlimited) | MSL 1 (Unlimited) | MSL 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected | REACH Unaffected |
| ECCN | EAR99 | EAR99 | EAR99 |
| HTSUS | 8542.39.0001 | 8542.39.0001 | 8542.39.0001 |
Engineering Selection Recommendations
Both Cardinal Components Inc. substitute parts (CPPC7L-A7BP-3.6864TS and CPPC7LZA7BP-3.68640TS) are qualified replacements for the obsolete 7W-3.6864MBET based on the following engineering factors:
Product Status: The substitute parts carry active product status, ensuring ongoing availability and manufacturer support. The original 7W-3.6864MBET is obsolete, making substitution necessary for continued production.
Compliance Certifications: Both Cardinal Components oscillators meet ROHS3 compliance, which exceeds the RoHS Compliant status of the original part. Both maintain REACH Unaffected and EAR99 ECCN classifications, consistent with the original component.
Electrical Equivalence: The substitute parts maintain identical electrical specifications across all critical parameters: 3.6864 MHz frequency, CMOS output, 3.3V supply, enable/disable function, ±50ppm frequency stability, and -40°C to 85°C operating temperature range.
Mechanical Compatibility: Both substitute parts utilize the same 4-SMD, No Lead package with identical footprint dimensions (7.00mm x 5.00mm). The seated height increases from 1.42mm to 1.90mm; this difference must be evaluated for clearance in specific PCB designs with height-constrained applications.
Supply Current Consideration: The substitute parts specify maximum supply current of 25mA compared to 20mA for the original part. Applications with strict power budget constraints must account for this 5mA increase. The substitute parts also specify disable mode current of 50µA, providing additional power management capability.
Packaging Format: The substitute parts are supplied in Tape & Reel (TR) format, suitable for automated assembly processes. Original packaging format for the 7W-3.6864MBET was not specified.
Frequently Asked Questions (FAQ)
Q: Can CPPC7L-A7BP-3.6864TS and CPPC7LZA7BP-3.68640TS be used interchangeably with the 7W-3.6864MBET?
A: Both Cardinal Components oscillators are electrically and mechanically equivalent to the 7W-3.6864MBET across all critical parameters. They share identical frequency, output type, supply voltage, function, frequency stability, operating temperature range, package type, and physical footprint dimensions. Both are direct substitutes.
Q: What is the difference between CPPC7L-A7BP-3.6864TS and CPPC7LZA7BP-3.68640TS?
A: Both parts are from the Cardinal Components FIPO™ CPP series and share identical electrical and mechanical specifications. The part numbers differ in their designation structure. Both are active products with equivalent performance characteristics and can be selected based on availability or procurement preference.
Q: Will the increased seated height of the substitute parts affect PCB assembly?
A: The substitute parts have a maximum seated height of 1.90mm compared to 1.42mm for the original 7W-3.6864MBET. This 0.48mm increase must be evaluated for clearance in applications with height-constrained designs, such as systems with limited vertical space or specific component placement requirements. PCB layout review is necessary for height-sensitive applications.
Q: Are the substitute parts RoHS compliant?
A: Yes. Both Cardinal Components substitute parts are ROHS3 compliant, which exceeds the RoHS Compliant status of the original part. Both maintain REACH Unaffected status and EAR99 ECCN classification.
Q: What is the impact of the increased supply current specification?
A: The substitute parts specify maximum supply current of 25mA compared to 20mA for the original part, representing a 5mA increase. Applications operating at or near the original 20mA specification must account for this additional current draw. The substitute parts also provide disable mode current specification of 50µA, enabling power management strategies not documented for the original part.
Q: Are the substitute parts available in the same packaging format as the original?
A: The substitute parts are supplied in Tape & Reel (TR) format for automated assembly. The original 7W-3.6864MBET packaging format was not specified in available documentation. Tape & Reel format is standard for high-volume production environments and is compatible with pick-and-place assembly equipment.
Q: What is the moisture sensitivity level of the substitute parts?
A: Both substitute parts are rated MSL 1 (Unlimited), identical to the original 7W-3.6864MBET. This classification indicates unlimited shelf life under normal storage conditions without moisture bake requirements prior to soldering.
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