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7C-12.000MBA-T CMOS Oscillator Equivalent & Substitute Parts
Part Overview
The 7C-12.000MBA-T is a 12 MHz XO (Standard) CMOS oscillator manufactured by TXC CORPORATION. This surface mount crystal oscillator operates at 3.3V with enable/disable functionality and is housed in a 4-SMD, No Lead package. The part is Active in product status with RoHS Compliant certification and Moisture Sensitivity Level 1 (Unlimited).
Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same frequency, output type, supply voltage, and package configuration. Identifying qualified substitutes ensures design flexibility and supply chain continuity.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Frequency | 12 MHz |
| Output Type | CMOS |
| Supply Voltage | 3.3V |
| Function | Enable/Disable |
| Frequency Stability | ±25ppm |
| Operating Temperature Range | -10°C ~ 70°C |
| Package / Case | 4-SMD, No Lead |
| Size / Dimension | 0.197" L x 0.126" W (5.00mm x 3.20mm) |
| Height - Seated (Max) | 0.055" (1.40mm) |
| Mounting Type | Surface Mount |
| RoHS Status | RoHS Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the 7C-12.000MBA-T is determined by strict equivalence across the following critical parameters:
Mandatory Matching Parameters:
- Frequency: 12 MHz
- Output Type: CMOS
- Supply Voltage: 3.3V
- Function: Enable/Disable
- Frequency Stability: ±25ppm
- Operating Temperature Range: -10°C ~ 70°C
- Package / Case: 4-SMD, No Lead
- Physical Dimensions: 0.197" L x 0.126" W (5.00mm x 3.20mm)
- Height - Seated (Max): 0.055" (1.40mm)
- Mounting Type: Surface Mount
The substitute part SXO53C3C171-12.000M from Suntsu Electronics, Inc. meets all mandatory matching parameters and is therefore classified as a direct equivalent for the 7C-12.000MBA-T.
Parameter Comparison
| Parameter | 7C-12.000MBA-T (TXC) | SXO53C3C171-12.000M (Suntsu) | Match Status |
|---|---|---|---|
| Manufacturer Part Number | 7C-12.000MBA-T | SXO53C3C171-12.000M | Different |
| Manufacturer | TXC CORPORATION | Suntsu Electronics, Inc. | Different |
| Series | 7C | SXO53C | Different |
| Frequency | 12 MHz | 12 MHz | Match |
| Output Type | CMOS | CMOS | Match |
| Supply Voltage | 3.3V | 3.3V | Match |
| Function | Enable/Disable | Enable/Disable | Match |
| Frequency Stability | ±25ppm | ±25ppm | Match |
| Operating Temperature Range | -10°C ~ 70°C | -10°C ~ 70°C | Match |
| Current - Supply (Max) | 30mA | 16mA | Compatible (Lower) |
| Package / Case | 4-SMD, No Lead | 4-SMD, No Lead | Match |
| Size / Dimension | 0.197" L x 0.126" W (5.00mm x 3.20mm) | 0.197" L x 0.126" W (5.00mm x 3.20mm) | Match |
| Height - Seated (Max) | 0.055" (1.40mm) | 0.055" (1.40mm) | Match |
| Mounting Type | Surface Mount | Surface Mount | Match |
| RoHS Status | RoHS Compliant | ROHS3 Compliant | Compatible (Higher Standard) |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | Not Specified | Equivalent or Better |
| ECCN | EAR99 | EAR99 | Match |
| HTSUS | 8542.39.0001 | 8542.39.0001 | Match |
Engineering Selection Recommendations
The SXO53C3C171-12.000M is a qualified direct substitute for the 7C-12.000MBA-T based on the following engineering criteria:
Electrical Equivalence: Both parts operate at identical frequency (12 MHz), output type (CMOS), supply voltage (3.3V), and frequency stability (±25ppm). The enable/disable function is present in both parts. The SXO53C3C171-12.000M exhibits lower maximum supply current (16mA versus 30mA), which is advantageous for power consumption.
Mechanical Compatibility: Both parts share identical package configuration (4-SMD, No Lead), physical dimensions (5.00mm x 3.20mm), and maximum seated height (1.40mm). Surface mount compatibility is confirmed for both parts.
Compliance Status: The 7C-12.000MBA-T carries RoHS Compliant certification with MSL 1 (Unlimited). The SXO53C3C171-12.000M carries ROHS3 Compliant certification, which represents a higher environmental compliance standard. Both parts share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.
Product Status: Both parts are Active in product status, ensuring continued availability and support.
Frequently Asked Questions (FAQ)
Q: Can the SXO53C3C171-12.000M be used as a direct replacement for the 7C-12.000MBA-T in existing designs?
A: Yes. The SXO53C3C171-12.000M meets all mandatory electrical and mechanical parameters. Identical frequency, output type, supply voltage, enable/disable function, frequency stability, operating temperature range, and package configuration confirm direct substitutability. No circuit modifications are required.
Q: What is the difference in current consumption between these two parts?
A: The 7C-12.000MBA-T specifies a maximum supply current of 30mA, while the SXO53C3C171-12.000M specifies 16mA. The lower current consumption of the substitute part is compatible with designs rated for the higher specification.
Q: Are there any compliance differences between these parts?
A: The 7C-12.000MBA-T is RoHS Compliant. The SXO53C3C171-12.000M is ROHS3 Compliant, which represents a more recent and stringent environmental standard. Both parts share identical ECCN and HTSUS classifications. The higher compliance standard of the substitute part does not create incompatibility.
Q: Do these parts have identical physical dimensions?
A: Yes. Both parts measure 0.197" L x 0.126" W (5.00mm x 3.20mm) with a maximum seated height of 0.055" (1.40mm). PCB footprint and assembly compatibility are identical.
Q: What is the Moisture Sensitivity Level (MSL) of the SXO53C3C171-12.000M?
A: The MSL specification is not provided in the available data for the SXO53C3C171-12.000M. The 7C-12.000MBA-T specifies MSL 1 (Unlimited). Contact the manufacturer for MSL confirmation if moisture sensitivity is a critical design parameter.
Q: Are both parts suitable for the same operating temperature range?
A: Yes. Both parts operate across the identical temperature range of -10°C ~ 70°C.
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