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AX7DBF4-425.0000C Equivalent & Substitute Parts
Part Overview
The AX7DBF4-425.0000C is a 425 MHz XO (Standard) LVDS Oscillator manufactured by Abracon LLC, part of the ClearClock™ AX7 series. This surface mount crystal oscillator operates at 2.5V with Enable/Disable functionality and is housed in an 8-SMD, No Lead package. The part is discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Abracon LLC |
| Series | ClearClock™ AX7 |
| Frequency | 425 MHz |
| Output Type | LVDS |
| Supply Voltage | 2.5V |
| Function | Enable/Disable |
| Frequency Stability | ±25ppm |
| Operating Temperature Range | -40°C ~ 85°C |
| Package Type | 8-SMD, No Lead |
| Package Dimensions | 7.00mm x 5.00mm x 1.90mm (Max Height) |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the AX7DBF4-425.0000C is determined by the following critical parameters:
- Frequency: Must be 425 MHz (exact match required)
- Output Type: Must be LVDS (signal integrity requirement)
- Function: Must support Enable/Disable capability
- Package Type: Must be 8-SMD, No Lead (mechanical and thermal compatibility)
- Package Dimensions: Must match 7.00mm x 5.00mm footprint
- Operating Temperature Range: Must cover -40°C ~ 85°C minimum
- Frequency Stability: Must meet ±25ppm specification
- RoHS Compliance: Must maintain ROHS3 Compliant status
The AX7DCF1-425.0000C qualifies as a manufacturer-recommended substitute. While the supply voltage differs (1.8V vs. 2.5V), this represents a valid alternative within the same product family when circuit design accommodates the lower voltage requirement.
Parameter Comparison
| Parameter | AX7DBF4-425.0000C (Main Part) | AX7DCF1-425.0000C (Substitute) |
|---|---|---|
| Manufacturer | Abracon LLC | Abracon LLC |
| Series | ClearClock™ AX7 | ClearClock™ AX7 |
| Frequency | 425 MHz | 425 MHz |
| Output Type | LVDS | LVDS |
| Supply Voltage | 2.5V | 1.8V |
| Function | Enable/Disable | Enable/Disable |
| Frequency Stability | ±25ppm | ±25ppm |
| Operating Temperature Range | -40°C ~ 85°C | -40°C ~ 85°C |
| Current - Supply (Max) | 70mA | 70mA |
| Current - Supply (Disable) (Max) | 65mA | 65mA |
| Package Type | 8-SMD, No Lead | 8-SMD, No Lead |
| Package Dimensions | 7.00mm x 5.00mm x 1.90mm (Max) | 7.00mm x 5.00mm x 1.90mm (Max) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Discontinued at DiGi Electronics | Discontinued at DiGi Electronics |
Engineering Selection Recommendations
Both the AX7DBF4-425.0000C and AX7DCF1-425.0000C maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), ensuring compatibility with standard manufacturing and storage protocols. The primary distinction is supply voltage: the main part operates at 2.5V while the substitute operates at 1.8V.
Selection between these parts depends on circuit design voltage requirements. If the application circuit is designed for 2.5V operation, the AX7DBF4-425.0000C is the direct match. If the circuit supports 1.8V operation or can be modified to accommodate lower voltage, the AX7DCF1-425.0000C provides an equivalent functional alternative with identical frequency, output type, package, and thermal characteristics.
Both parts are discontinued at DiGi Electronics, indicating limited availability. Inventory status should be verified with authorized distributors before final procurement decisions.
Frequently Asked Questions (FAQ)
Q: Can the AX7DCF1-425.0000C replace the AX7DBF4-425.0000C in all applications?
A: Substitution is valid only if the circuit design accommodates 1.8V operation. The lower supply voltage is the only functional difference between these parts. If the original design requires 2.5V, voltage regulation or circuit redesign is necessary.
Q: Are the package dimensions identical between these parts?
A: Yes. Both parts use the 8-SMD, No Lead package with identical footprint (7.00mm x 5.00mm) and maximum seated height (1.90mm). PCB layout and reflow profiles remain unchanged.
Q: Do both parts meet the same frequency stability specification?
A: Yes. Both the AX7DBF4-425.0000C and AX7DCF1-425.0000C maintain ±25ppm frequency stability across the -40°C ~ 85°C operating temperature range.
Q: What is the significance of the Enable/Disable function?
A: Both parts support Enable/Disable functionality, allowing the oscillator output to be controlled via a logic signal. This feature is preserved in the substitute part.
Q: Are there compliance or certification differences between these parts?
A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical MSL 1 (Unlimited) moisture sensitivity ratings. Regulatory and environmental compliance is equivalent.
Q: Why is the AX7DCF1-425.0000C listed as manufacturer-recommended?
A: Abracon LLC designates the AX7DCF1-425.0000C as the recommended substitute for the discontinued AX7DBF4-425.0000C within the ClearClock™ AX7 series, provided voltage compatibility exists in the application circuit.
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