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AX-8.192MAHE-T Equivalent & Substitute Parts
Part Overview
The AX-8.192MAHE-T is an 8.192 MHz fundamental mode crystal oscillator manufactured by TXC CORPORATION. This surface mount device is specified for ±30ppm frequency tolerance with 12pF load capacitance and 120 Ohms equivalent series resistance. The part is Active status and RoHS Compliant with MSL 1 rating, indicating suitability for standard industrial and commercial applications requiring stable frequency reference in the 8 MHz range. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the allowed specifications for this crystal category.
Substiute Parts
Key Parameters
| Parameter | Value | Unit | Substitution Relevance |
|---|---|---|---|
| Frequency | 8.192 | MHz | Critical - Must match exactly |
| Frequency Tolerance | ±30 | ppm | Critical - Determines circuit accuracy |
| Load Capacitance | 12 | pF | Critical - Must match for circuit operation |
| ESR (Equivalent Series Resistance) | 120 | Ohms | Important - Affects oscillator startup and stability |
| Operating Temperature Range | -40 to 85 | °C | Critical - Defines environmental compatibility |
| Mounting Type | Surface Mount | — | Critical - PCB assembly compatibility |
| Package Type | 2-SMD, No Lead | — | Critical - Physical and electrical interface |
| RoHS Status | RoHS Compliant | — | Important - Regulatory compliance |
| MSL Rating | 1 (Unlimited) | — | Important - Moisture handling and storage |
Substitute Part Grouping Explanation
Substitution for the AX-8.192MAHE-T is determined by strict equivalence in the following parameters:
Critical Matching Parameters:
- Frequency: 8.192 MHz (exact match required)
- Frequency Tolerance: ±30ppm (exact match required)
- Load Capacitance: 12pF (exact match required)
- Operating Temperature Range: -40°C to 85°C (exact match required)
- Mounting Type: Surface Mount (exact match required)
- Package Type: 2-SMD, No Lead (exact match required)
Allowable Variation Parameters:
- ESR (Equivalent Series Resistance): Variation permitted within component design specifications. The main part specifies 120 Ohms; substitutes with 100 Ohms or 150 Ohms are acceptable provided the oscillator circuit design accommodates the ESR range.
- Physical Dimensions: Variation permitted provided the component fits within PCB footprint constraints and maintains 2-SMD, No Lead package classification.
- Manufacturer: Different manufacturers acceptable if all critical parameters match.
- Compliance Certifications: Enhanced certifications (AEC-Q200, ROHS3) are acceptable upgrades from the main part specification.
Two substitute parts meet these criteria: AA-8.192MAGE-T (TXC CORPORATION) and ECS-81.92-12-30Q-EN-TR (ECS Inc.).
Parameter Comparison
| Parameter | AX-8.192MAHE-T (Main) | AA-8.192MAGE-T (Substitute) | ECS-81.92-12-30Q-EN-TR (Substitute) |
|---|---|---|---|
| Manufacturer | TXC CORPORATION | TXC CORPORATION | ECS Inc. |
| Frequency | 8.192 MHz | 8.192 MHz | 8.192 MHz |
| Frequency Tolerance | ±30ppm | ±30ppm | ±30ppm |
| Frequency Stability | ±50ppm | ±50ppm | ±50ppm |
| Load Capacitance | 12pF | 12pF | 12pF |
| ESR | 120 Ohms | 150 Ohms | 100 Ohms |
| Operating Mode | Fundamental | Fundamental | Fundamental |
| Operating Temperature | -40°C to 85°C | -40°C to 85°C | -40°C to 85°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 2-SMD, No Lead | 2-SMD, No Lead | 2-SMD, No Lead |
| Size / Dimension | 0.315" L x 0.177" W (8.00mm x 4.50mm) | 0.197" L x 0.126" W (5.00mm x 3.20mm) | 0.197" L x 0.126" W (5.00mm x 3.20mm) |
| Height - Seated (Max) | 0.059" (1.50mm) | 0.053" (1.35mm) | 0.043" (1.10mm) |
| RoHS Status | RoHS Compliant | ROHS3 Compliant | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Active | Active | Active |
| ECCN | EAR99 | EAR99 | EAR99 |
| HTSUS | 8541.60.0050 | 8541.60.0050 | 8541.60.0050 |
Engineering Selection Recommendations
AX-8.192MAHE-T (Main Part): All critical electrical and mechanical parameters are met. RoHS Compliant status satisfies standard environmental regulations. Active product status ensures continued availability. Suitable for applications where the 8.00mm x 4.50mm footprint is accommodated in PCB design.
AA-8.192MAGE-T (TXC CORPORATION Substitute): Meets all critical substitution parameters. ESR of 150 Ohms represents a 25 Ohm increase from the main part. ROHS3 Compliant status provides enhanced regulatory compliance. AEC-Q200 rating indicates automotive-grade qualification. Smaller footprint (5.00mm x 3.20mm) enables space optimization. Active product status with 31,597 units in stock provides supply security. Suitable for applications where automotive-grade reliability or enhanced compliance is required and oscillator circuit design accommodates 150 Ohm ESR.
ECS-81.92-12-30Q-EN-TR (ECS Inc. Substitute): Meets all critical substitution parameters. ESR of 100 Ohms represents a 20 Ohm decrease from the main part, potentially improving oscillator startup characteristics. ROHS3 Compliant status and AEC-Q200 rating provide automotive-grade qualification. Smallest height profile (1.10mm) enables maximum PCB density. REACH Unaffected status confirms no restricted substance concerns. Active product status with 12,972 units in stock ensures availability. Suitable for applications requiring lowest ESR, maximum height constraint compliance, or automotive-grade specifications.
All three parts are Active status and maintain identical frequency, tolerance, load capacitance, and operating temperature specifications. Selection between substitutes depends on PCB footprint constraints, ESR tolerance in the oscillator circuit design, and compliance certification requirements.
Frequently Asked Questions (FAQ)
Q: Can AA-8.192MAGE-T replace AX-8.192MAHE-T directly on the PCB?
A: Direct replacement requires verification of two factors: (1) PCB footprint compatibility—AA-8.192MAGE-T has a smaller footprint (5.00mm x 3.20mm) compared to AX-8.192MAHE-T (8.00mm x 4.50mm), so the pad layout must accommodate the smaller package; (2) Oscillator circuit ESR tolerance—AA-8.192MAGE-T has 150 Ohm ESR versus 120 Ohm for the main part. The circuit design must tolerate this 25 Ohm increase for stable oscillation.
Q: What is the difference between the two substitute parts?
A: Both AA-8.192MAGE-T and ECS-81.92-12-30Q-EN-TR meet all critical electrical parameters. The primary differences are: (1) ESR—AA-8.192MAGE-T has 150 Ohms; ECS-81.92-12-30Q-EN-TR has 100 Ohms; (2) Physical dimensions—AA-8.192MAGE-T is 5.00mm x 3.20mm x 1.35mm; ECS-81.92-12-30Q-EN-TR is 5.00mm x 3.20mm x 1.10mm; (3) Manufacturer—TXC CORPORATION versus ECS Inc. Both are Active status with AEC-Q200 and ROHS3 compliance.
Q: Does ESR variation affect circuit performance?
A: ESR affects oscillator startup time and power consumption. The main part specifies 120 Ohms. AA-8.192MAGE-T at 150 Ohms may increase startup time slightly; ECS-81.92-12-30Q-EN-TR at 100 Ohms may decrease startup time. The oscillator circuit design determines whether these variations remain within acceptable operating margins. Circuit simulation or testing is necessary to confirm performance if ESR tolerance is critical.
Q: Are all three parts RoHS compliant?
A: Yes. AX-8.192MAHE-T is RoHS Compliant. AA-8.192MAGE-T and ECS-81.92-12-30Q-EN-TR are both ROHS3 Compliant, which represents an enhanced compliance standard. All three parts meet RoHS requirements.
Q: What is the significance of AEC-Q200 rating on the substitute parts?
A: AEC-Q200 is an automotive-grade qualification standard. AA-8.192MAGE-T and ECS-81.92-12-30Q-EN-TR both carry this rating, indicating they meet automotive reliability and environmental stress testing requirements. The main part AX-8.192MAHE-T does not list this certification. If automotive-grade qualification is required, either substitute part is suitable.
Q: Can I use ECS-81.92-12-30Q-EN-TR in a space-constrained application?
A: Yes. ECS-81.92-12-30Q-EN-TR has the lowest height profile at 1.10mm maximum seated height, compared to 1.35mm for AA-8.192MAGE-T and 1.50mm for AX-8.192MAHE-T. If vertical PCB space is limited, ECS-81.92-12-30Q-EN-TR is the optimal choice, provided the 100 Ohm ESR is compatible with the oscillator circuit design.
Q: What is MSL 1 rating and why is it important?
A: MSL (Moisture Sensitivity Level) 1 means Unlimited shelf life with no moisture bake-out requirement before soldering. All three parts carry MSL 1 rating, indicating they can be stored and handled under standard conditions without special moisture control procedures.
Q: Are there any supply chain differences between the three parts?
A: Inventory levels differ: AX-8.192MAHE-T has 1,014 units in stock; AA-8.192MAGE-T has 31,597 units; ECS-81.92-12-30Q-EN-TR has 12,972 units. For long-term supply security, AA-8.192MAGE-T offers the highest inventory availability.
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