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TD-6.000MBD-T MEMS Oscillator Equivalent & Substitute Parts
Part Overview
The TD-6.000MBD-T is a 6 MHz MEMS-based XO (Standard) oscillator manufactured by TXC CORPORATION. This component operates at 3.3V with CMOS output, Enable/Disable function, and is housed in a 4-SMD, No Lead package measuring 2.50mm × 2.00mm. The part is classified as Obsolete, necessitating identification of equivalent substitute components that maintain functional and mechanical compatibility for ongoing production and repair applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Frequency | 6.000 MHz |
| Output Type | CMOS |
| Supply Voltage | 3.3V |
| Function | Enable/Disable |
| Frequency Stability | ±25ppm |
| Operating Temperature Range | -40°C to 85°C |
| Package / Case | 4-SMD, No Lead |
| Physical Dimensions | 2.50mm L × 2.00mm W |
| Mounting Type | Surface Mount |
| Moisture Sensitivity Level | MSL 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the TD-6.000MBD-T is determined by strict alignment with the following critical parameters:
Mandatory Matching Parameters:
- Frequency: 6.000 MHz
- Output Type: CMOS
- Supply Voltage: 3.3V
- Function: Enable/Disable
- Package / Case: 4-SMD, No Lead
- Physical Dimensions: 2.50mm × 2.00mm
- Operating Temperature Range: -40°C to 85°C
- Mounting Type: Surface Mount
- Moisture Sensitivity Level: MSL 1
Allowable Variation Parameters:
- Frequency Stability: ±25ppm (main part) to ±50ppm (substitute acceptable)
- Current - Supply (Max): 25mA (main part) to 7mA–10mA (substitute acceptable, lower is compatible)
- Base Resonator: MEMS (main part) to Crystal (substitute acceptable, functionally equivalent)
- Height - Seated (Max): 0.80mm (main part) to 0.90mm (substitute acceptable within PCB clearance)
Two substitute parts meet these criteria and are listed below.
Parameter Comparison
| Parameter | TD-6.000MBD-T (Main) | 8W-6.000MBD-T (Substitute) | ECS-2033-060-BN (Substitute) |
|---|---|---|---|
| Manufacturer | TXC CORPORATION | TXC CORPORATION | ECS Inc. |
| Series | TD | 8W | ECS-2033 |
| Product Status | Obsolete | Active | Active |
| Base Resonator | MEMS | Crystal | Crystal |
| Frequency | 6.000 MHz | 6.000 MHz | 6.000 MHz |
| Output Type | CMOS | CMOS | CMOS |
| Supply Voltage | 3.3V | 3.3V | 3.3V |
| Function | Enable/Disable | Enable/Disable | Enable/Disable |
| Frequency Stability | ±25ppm | ±25ppm | ±50ppm |
| Operating Temperature | -40°C to 85°C | -40°C to 85°C | -40°C to 85°C |
| Current - Supply (Max) | 25mA | 10mA | 7mA |
| Package / Case | 4-SMD, No Lead | 4-SMD, No Lead | 4-SMD, No Lead |
| Size / Dimension | 2.50mm L × 2.00mm W | 2.50mm L × 2.00mm W | 2.50mm L × 2.00mm W |
| Height - Seated (Max) | 0.80mm | 0.90mm | 0.90mm |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Moisture Sensitivity Level | MSL 1 | MSL 1 | MSL 1 |
| RoHS Status | Not specified | ROHS3 Compliant | ROHS3 Compliant |
| REACH Status | Not specified | REACH Unaffected | REACH Unaffected |
| ECCN | EAR99 | EAR99 | EAR99 |
| HTSUS | 8542.39.0001 | 8542.39.0001 | 8542.39.0001 |
Engineering Selection Recommendations
8W-6.000MBD-T (TXC CORPORATION)
This substitute is manufactured by the same supplier as the main part and maintains identical frequency stability (±25ppm). The 8W series uses a crystal resonator instead of MEMS technology but delivers equivalent functional performance. Current consumption is reduced to 10mA, providing improved power efficiency. The part is Active status with ROHS3 compliance and REACH unaffected certification. Height increase from 0.80mm to 0.90mm requires verification of PCB clearance in the target application.
ECS-2033-060-BN (ECS Inc.)
This substitute provides the widest availability (9045 Pcs in stock) and lowest current consumption (7mA). Frequency stability is ±50ppm, which is within acceptable tolerance for standard XO applications but represents a 2× relaxation from the main part specification. The part is Active status with ROHS3 compliance and REACH unaffected certification. Packaging is Tape & Reel format. Height is 0.90mm, requiring PCB clearance verification.
Frequently Asked Questions (FAQ)
Q: Can the 8W-6.000MBD-T directly replace the TD-6.000MBD-T without circuit modification?
A: Yes. Both parts share identical frequency (6.000 MHz), output type (CMOS), supply voltage (3.3V), function (Enable/Disable), and package (4-SMD, No Lead). The 8W series uses crystal resonator technology instead of MEMS but delivers equivalent electrical performance. Verify PCB clearance for the increased height (0.90mm vs. 0.80mm).
Q: What is the difference between the MEMS resonator in the TD series and the crystal resonator in the 8W series?
A: Both technologies produce CMOS oscillator output at 6.000 MHz with identical frequency stability (±25ppm) and operating temperature range (-40°C to 85°C). The primary difference is current consumption: TD series draws up to 25mA, while 8W series draws up to 10mA. Crystal-based oscillators are established technology with proven long-term reliability in industrial applications.
Q: Is the ECS-2033-060-BN suitable for applications requiring ±25ppm frequency stability?
A: The ECS-2033-060-BN specifies ±50ppm frequency stability, which is twice the tolerance of the main part. This part is suitable for applications with relaxed frequency stability requirements. Applications requiring ±25ppm or tighter must use either the TD-6.000MBD-T or 8W-6.000MBD-T.
Q: What does the 0.90mm height difference mean for PCB design?
A: The main part (TD-6.000MBD-T) has a seated height of 0.80mm. Both substitutes (8W-6.000MBD-T and ECS-2033-060-BN) have a seated height of 0.90mm. This 0.10mm increase must be verified against PCB clearance specifications, solder reflow profiles, and any overlying components or conformal coatings.
Q: Are both substitute parts RoHS and REACH compliant?
A: Yes. Both 8W-6.000MBD-T and ECS-2033-060-BN are ROHS3 Compliant and REACH Unaffected. The main part (TD-6.000MBD-T) does not specify these certifications.
Q: What is the difference in current consumption between the three parts?
A: TD-6.000MBD-T (main): 25mA maximum. 8W-6.000MBD-T (substitute): 10mA maximum. ECS-2033-060-BN (substitute): 7mA maximum. Lower current consumption in substitutes reduces power dissipation and improves overall system efficiency.
Q: Can I use the ECS-2033-060-BN in Tape & Reel packaging for manual assembly?
A: The ECS-2033-060-BN is supplied in Tape & Reel (TR) format, which is standard for automated pick-and-place assembly. Manual assembly from Tape & Reel is possible but requires manual tape feeding and component extraction. Verify your assembly process compatibility.
Q: What is the Moisture Sensitivity Level (MSL) for all three parts?
A: All three parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. These parts do not require special moisture control during storage, handling, or assembly.
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