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7W-16.000MBB-T CMOS Oscillator Equivalent & Substitute Parts
Part Overview
The 7W-16.000MBB-T is a 16 MHz XO (Standard) CMOS oscillator manufactured by TXC CORPORATION, designed for applications requiring a 3.3V enable/disable crystal oscillator in a compact 4-SMD, No Lead surface mount package. This part operates across the temperature range of -10°C to 70°C with a frequency stability of ±50ppm and a maximum supply current of 20mA.
The 7W-16.000MBB-T is classified as Obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems currently utilizing this oscillator.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Frequency | 16 MHz |
| Output Type | CMOS |
| Supply Voltage | 3.3V |
| Function | Enable/Disable |
| Frequency Stability | ±50ppm |
| Operating Temperature Range | -10°C ~ 70°C |
| Maximum Supply Current | 20mA |
| Package Type | 4-SMD, No Lead |
| Physical Dimensions | 7.00mm L x 5.00mm W |
| Maximum Seated Height | 1.42mm |
| Mounting Type | Surface Mount |
| RoHS Status | RoHS Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the 7W-16.000MBB-T are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:
Critical Matching Parameters:
- Frequency: 16 MHz (exact match required)
- Output Type: CMOS (exact match required)
- Supply Voltage: 3.3V (exact match required)
- Function: Enable/Disable (exact match required)
- Package Type: 4-SMD, No Lead (exact match required)
- Physical Dimensions: 7.00mm L x 5.00mm W (exact match required)
- Frequency Stability: ±50ppm (exact match required)
- Operating Temperature Range: -10°C ~ 70°C (exact match required)
Allowable Variations:
- Maximum Supply Current: Substitute may be equal to or lower than 20mA
- Maximum Seated Height: Substitute may be equal to or lower than 1.42mm
- RoHS Compliance Status: Substitute must meet or exceed RoHS compliance level
- Packaging Format: May differ (Cut Tape to Bulk conversion acceptable)
The SXO75C3A171-16.000M from Suntsu Electronics, Inc. qualifies as a direct substitute based on matching all critical parameters and meeting allowable variation criteria.
Parameter Comparison
| Parameter | 7W-16.000MBB-T (TXC) | SXO75C3A171-16.000M (Suntsu) | Match Status |
|---|---|---|---|
| Frequency | 16 MHz | 16 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 Range | -10°C ~ 70°C | -10°C ~ 70°C | Exact Match |
| Maximum Supply Current | 20mA | 16mA | Substitute Lower (Acceptable) |
| Package Type | 4-SMD, No Lead | 4-SMD, No Lead | Exact Match |
| Physical Dimensions | 7.00mm L x 5.00mm W | 7.00mm L x 5.00mm W | Exact Match |
| Maximum Seated Height | 1.42mm | 1.60mm | Substitute Higher (Verify PCB Clearance) |
| RoHS Status | RoHS Compliant | ROHS3 Compliant | Substitute Exceeds |
| Moisture Sensitivity Level | 1 (Unlimited) | Not Specified | Information Not Provided |
| Product Status | Obsolete | Active | Substitute Active |
Engineering Selection Recommendations
The SXO75C3A171-16.000M is a qualified substitute for the 7W-16.000MBB-T based on the following engineering criteria:
Electrical Compatibility: All critical electrical parameters match exactly, including frequency, output type, supply voltage, function, and frequency stability. The substitute's maximum supply current of 16mA is lower than the original 20mA specification, indicating improved power efficiency without compromising functionality.
Mechanical Compatibility: Physical dimensions and package type are identical. The substitute's maximum seated height of 1.60mm exceeds the original 1.42mm by 0.18mm. PCB layout verification is required to confirm adequate clearance in the target application.
Compliance and Status: The SXO75C3A171-16.000M holds Active product status, ensuring long-term availability and continued manufacturer support. ROHS3 compliance exceeds the original RoHS Compliant status, meeting current regulatory requirements. Both parts maintain REACH Unaffected status and EAR99 ECCN classification.
Supply Chain Advantage: The substitute part is currently in stock with 2,092 units available, compared to the obsolete original part with 819 units remaining. Selection of the active substitute ensures sustainable supply chain continuity.
Frequently Asked Questions (FAQ)
Q: Can the SXO75C3A171-16.000M be used as a direct replacement for the 7W-16.000MBB-T without circuit modifications?
A: Yes, the SXO75C3A171-16.000M is electrically and mechanically compatible for direct substitution. All critical electrical parameters match exactly. However, the 0.18mm increase in maximum seated height requires verification of PCB clearance in your specific layout.
Q: What is the significance of the frequency stability specification of ±50ppm?
A: Frequency stability of ±50ppm indicates the maximum deviation of the oscillator's output frequency from the nominal 16 MHz across the specified operating temperature range of -10°C to 70°C. Both parts maintain identical stability specifications, ensuring equivalent timing accuracy in the application.
Q: Why is the substitute part's maximum supply current lower (16mA vs. 20mA)?
A: The lower maximum supply current of the SXO75C3A171-16.000M indicates improved power efficiency in the design. This does not affect compatibility; the substitute will operate correctly in circuits designed for the original 20mA specification. Power consumption will be equal to or lower than the original part.
Q: Does the difference in packaging format (Cut Tape vs. Bulk) affect electrical performance?
A: No. Packaging format differences (Cut Tape versus Bulk) relate only to order quantity and handling logistics. Electrical and mechanical performance of the component itself remains identical regardless of packaging format.
Q: What does ROHS3 compliance mean compared to RoHS Compliant?
A: ROHS3 represents the current version of the Restriction of Hazardous Substances directive, incorporating the most recent regulatory updates. ROHS3 compliance exceeds and supersedes earlier RoHS compliance levels, ensuring the substitute part meets the latest environmental and safety standards.
Q: Is the Moisture Sensitivity Level (MSL) specification important for the substitute part?
A: The original part specifies MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. The substitute part's MSL specification is not provided in the available data. Consult the Suntsu Electronics technical datasheet to confirm MSL rating for your specific storage and handling requirements.
Q: Can both parts be used interchangeably in new designs?
A: The SXO75C3A171-16.000M is recommended for new designs due to its Active product status and superior long-term availability. The 7W-16.000MBB-T, classified as Obsolete, should be reserved for legacy system maintenance only.
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