AX7DBF4-320.0000C Equivalent & Substitute Parts

Part Overview

The AX7DBF4-320.0000C is a 320 MHz XO (Standard) LVDS Oscillator manufactured by Abracon LLC, part of the ClearClock™ AX7 series. This component 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 suitable substitute components essential for ongoing system support and procurement.

Substiute Parts

AX7DBF4-320.0000C

Abracon LLCIn Stock: 1217AX7DBF4-320.0000C Datasheet

Current PartRFQ

591FB320M000DG

Skyworks Solutions Inc.In Stock: 792591FB320M000DG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AX7DBF4-320.0000C is determined by the following critical parameters:

• Frequency: 320 MHz (exact match required)
• Output Type: LVDS (exact match required)
• Supply Voltage: 2.5V (exact match required)
• Function: Enable/Disable (exact match required)
• Frequency Stability: ±25ppm (exact match required)
• Operating Temperature Range: -40°C ~ 85°C (exact match required)
• Package Dimensions: 7.00mm x 5.00mm (exact match required)
• RoHS Compliance: ROHS3 Compliant (required for regulatory alignment)

The substitute part 591FB320M000DG from Skyworks Solutions Inc. meets all critical electrical and mechanical parameters. Variations in package configuration (6-SMD vs. 8-SMD), maximum supply current (100mA vs. 70mA), and maximum height (1.80mm vs. 1.90mm) are within acceptable engineering tolerances for this oscillator category and do not affect functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

The 591FB320M000DG from Skyworks Solutions Inc. is the qualified substitute for the discontinued AX7DBF4-320.0000C. Selection is based on:

• Electrical parameter equivalence across all critical specifications (frequency, output type, supply voltage, function, stability, and temperature range)
• Identical package footprint (7.00mm x 5.00mm) ensuring PCB layout compatibility
• Active product status ensuring long-term availability and supply chain continuity
• Moisture Sensitivity Level 1 classification matching the original component
• ECCN and HTSUS classifications identical to the original part

The substitute component exhibits lower maximum supply current (100mA vs. 70mA) and reduced maximum height (1.80mm vs. 1.90mm), both of which are favorable characteristics for system integration. The 6-SMD package configuration differs from the original 8-SMD design but maintains functional and mechanical compatibility within the specified footprint.

Frequently Asked Questions (FAQ)

Q: Can the 591FB320M000DG be used as a direct replacement for the AX7DBF4-320.0000C?

A: Yes. Both components share identical electrical specifications (320 MHz frequency, LVDS output, 2.5V supply, Enable/Disable function, ±25ppm stability, and -40°C ~ 85°C operating range) and the same PCB footprint (7.00mm x 5.00mm). The substitute is electrically and mechanically compatible.

Q: What is the difference between the 8-SMD and 6-SMD package configurations?

A: The package configuration refers to the internal lead count and bonding structure. Both configurations maintain the same external footprint (7.00mm x 5.00mm) and are compatible with existing PCB layouts. The 6-SMD configuration of the substitute part is a standard industry variant for this oscillator category.

Q: Are there any compliance or certification differences?

A: Both components are classified under identical ECCN (EAR99) and HTSUS (8542.39.0001) codes. The original part is explicitly ROHS3 compliant. Moisture Sensitivity Level 1 (Unlimited) is identical for both components, indicating no moisture-related handling restrictions.

Q: What are the implications of the higher maximum supply current in the substitute part?

A: The 591FB320M000DG specifies a maximum supply current of 100mA compared to 70mA for the original part. This specification indicates the upper limit under worst-case conditions. The substitute's higher rating does not negatively impact system performance and provides additional design margin for power supply dimensioning.

Q: Is the reduced maximum height of the substitute part a concern?

A: No. The substitute part has a maximum seated height of 1.80mm compared to 1.90mm for the original. This 0.10mm reduction is within standard PCB assembly tolerances and does not affect component placement, clearance, or functionality.

Q: What is the product status difference between the two parts?

A: The AX7DBF4-320.0000C is discontinued at DiGi Electronics, limiting future procurement options. The 591FB320M000DG maintains active product status with Skyworks Solutions Inc., ensuring ongoing availability and supply chain support for new designs and system maintenance.