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7W-70.656MBE-T CMOS Oscillator Equivalent & Substitute Parts
Part Overview
The 7W-70.656MBE-T is a 70.656 MHz XO (Standard) CMOS oscillator manufactured by TXC CORPORATION. This surface mount device operates at 3.3V with Enable/Disable functionality and is housed in a 4-SMD, No Lead package measuring 7.00mm x 5.00mm. The part is classified as Obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, design updates, and procurement continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Frequency | 70.656 MHz |
| Output Type | CMOS |
| Supply Voltage | 3.3V |
| Function | Enable/Disable |
| Frequency Stability | ±50ppm |
| Operating Temperature Range | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Package Type | SMD, No Lead |
| Footprint Dimensions | 7.00mm x 5.00mm |
| RoHS Compliance | RoHS Compliant |
| Moisture Sensitivity Level | MSL 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the 7W-70.656MBE-T is determined by strict alignment of the following critical parameters:
Mandatory Matching Parameters:
- Frequency: 70.656 MHz (exact match required)
- Output Type: CMOS
- Supply Voltage: 3.3V
- Function: Enable/Disable capability
- Frequency Stability: ±50ppm
- Operating Temperature Range: -40°C ~ 85°C
- Mounting Type: Surface Mount
- RoHS Compliance: RoHS Compliant
- Moisture Sensitivity Level: MSL 1
Allowable Variations:
- Package configuration (4-SMD vs. 6-SMD, No Lead)
- Maximum supply current (within system design limits)
- Seated height (within PCB assembly constraints)
- Manufacturer identity (different qualified suppliers)
The substitute part 530CA70M6560DGR from Skyworks Solutions Inc. meets all mandatory matching parameters while operating in an Active product status, providing long-term availability and supply chain stability.
Parameter Comparison
| Parameter | 7W-70.656MBE-T (TXC) | 530CA70M6560DGR (Skyworks) | Match Status |
|---|---|---|---|
| Manufacturer | TXC CORPORATION | Skyworks Solutions Inc. | Different Supplier |
| Series | 7W | Si530 | Different Series |
| Product Status | Obsolete | Active | Improved Availability |
| Frequency | 70.656 MHz | 70.656 MHz | Exact Match |
| Output Type | CMOS | CMOS | Exact Match |
| Supply Voltage | 3.3V | 3.3V | Exact Match |
| Function | Enable/Disable | Enable/Disable | Exact Match |
| Frequency Stability | ±50ppm | ±50ppm | Exact Match |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | Exact Match |
| Current - Supply (Max) | 20mA | 88mA | Substitute Higher |
| Current - Supply (Disable) (Max) | Not Specified | 75mA | Additional Data |
| Mounting Type | Surface Mount | Surface Mount | Exact Match |
| Package / Case | 4-SMD, No Lead | 6-SMD, No Lead | Different Configuration |
| Footprint Dimensions | 7.00mm x 5.00mm | 7.00mm x 5.00mm | Exact Match |
| Height - Seated (Max) | 1.42mm | 1.80mm | Substitute Higher |
| RoHS Status | RoHS Compliant | RoHS Compliant | Exact Match |
| Moisture Sensitivity Level | MSL 1 (Unlimited) | MSL 1 (Unlimited) | Exact Match |
| Packaging | Not Specified | Tape & Reel (TR) | Additional Data |
Engineering Selection Recommendations
Primary Substitute: 530CA70M6560DGR
The 530CA70M6560DGR from Skyworks Solutions Inc. is the qualified equivalent for the obsolete 7W-70.656MBE-T. Selection is based on the following engineering criteria:
Compliance & Status:
- Active product status ensures long-term availability and manufacturing support
- RoHS Compliant certification maintained
- MSL 1 rating provides unlimited shelf life compatibility
Functional Equivalence:
- Identical frequency, output type, supply voltage, and enable/disable function
- Matching frequency stability and operating temperature range
- Identical footprint dimensions (7.00mm x 5.00mm) for PCB compatibility
Design Considerations:
- Maximum supply current of 88mA (vs. 20mA original) requires verification that system power budget accommodates the increase
- Seated height of 1.80mm (vs. 1.42mm original) requires confirmation of PCB assembly clearance
- 6-SMD package configuration (vs. 4-SMD original) necessitates PCB layout review for pad compatibility
Procurement:
- 733 units available in stock as new original components
- Tape & Reel packaging suitable for automated assembly processes
Frequently Asked Questions (FAQ)
Q: Can the 530CA70M6560DGR directly replace the 7W-70.656MBE-T without PCB modifications?
A: The footprint dimensions are identical (7.00mm x 5.00mm), but the package configuration differs (6-SMD vs. 4-SMD). PCB pad layout must be reviewed to confirm compatibility. The increased seated height (1.80mm vs. 1.42mm) requires clearance verification.
Q: What is the impact of the higher maximum supply current (88mA vs. 20mA)?
A: System power supply and current delivery capability must be evaluated. If the original design allocated 20mA for this oscillator, the substitute's 88mA maximum rating requires confirmation that the power distribution network can support this increase without voltage regulation issues.
Q: Are both parts suitable for the same operating temperature applications?
A: Yes. Both parts operate across the identical temperature range of -40°C to 85°C with ±50ppm frequency stability, making them thermally equivalent for this specification.
Q: What does the 6-SMD package configuration mean compared to the 4-SMD original?
A: The 6-SMD configuration indicates six solder pads versus four on the original. This affects PCB layout and requires pad pattern verification before assembly. The footprint area remains the same (7.00mm x 5.00mm).
Q: Is the substitute part RoHS compliant?
A: Yes. The 530CA70M6560DGR is RoHS Compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the original part's environmental compliance.
Q: Why is the original part classified as Obsolete?
A: The 7W-70.656MBE-T from TXC CORPORATION has reached end-of-life status. The 530CA70M6560DGR from Skyworks Solutions Inc. is an Active product, providing continued manufacturing support and supply chain availability.
Q: Can I use the substitute in new designs?
A: Yes. The 530CA70M6560DGR is recommended for new designs requiring a 70.656 MHz CMOS oscillator with 3.3V supply and enable/disable functionality. Its Active status ensures long-term component availability.
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