AX7DAF1-311.0400C Equivalent & Substitute Parts

Part Overview

The AX7DAF1-311.0400C is a 311.04 MHz XO (Standard) LVDS Oscillator manufactured by Abracon LLC, part of the ClearClock™ AX7 series. This surface mount oscillator operates at 3.3V with Enable/Disable functionality and is housed in an 8-SMD, No Lead package. The part is currently discontinued at DiGi Electronics, making identification of equivalent substitute components essential for ongoing system support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	AX7DAF1-311.0400C
Manufacturer	Abracon LLC
Series	ClearClock™ AX7
Frequency	311.04 MHz
Output Type	LVDS
Supply Voltage	3.3V
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
Maximum Height	1.90mm
Supply Current (Max)	70mA
Supply Current - Disable (Max)	65mA
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitution of the AX7DAF1-311.0400C is determined by strict alignment of the following critical parameters:

Frequency: 311.04 MHz (exact match required)
Output Type: LVDS (differential signaling standard)
Supply Voltage: 3.3V
Function: Enable/Disable capability
Frequency Stability: ±25ppm
Operating Temperature Range: -40°C ~ 85°C
Base Resonator: Crystal-based XO (Standard)
Mounting Type: Surface Mount
Package Dimensions: 7.00mm x 5.00mm footprint
Compliance: RoHS3 and REACH requirements

The substitute part 590NB311M040DG from Skyworks Solutions Inc. meets all critical electrical and mechanical parameters. While the package configuration differs (6-SMD vs. 8-SMD), the footprint dimensions remain identical, and the electrical performance specifications are equivalent or superior.

Parameter Comparison

Parameter	AX7DAF1-311.0400C (Abracon)	590NB311M040DG (Skyworks)	Compatibility
Frequency	311.04 MHz	311.04 MHz	Exact Match
Output Type	LVDS	LVDS	Exact Match
Supply Voltage	3.3V	3.3V	Exact Match
Function	Enable/Disable	Enable/Disable	Exact Match
Frequency Stability	±25ppm	±25ppm	Exact Match
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	Exact Match
Package Dimensions	7.00mm x 5.00mm	7.00mm x 5.00mm	Exact Match
Maximum Height	1.90mm	1.80mm	Compatible (Lower Profile)
Supply Current (Max)	70mA	100mA	Compatible (Higher Rating)
Supply Current - Disable (Max)	65mA	75mA	Compatible (Higher Rating)
Package Type	8-SMD, No Lead	6-SMD, No Lead	Different Configuration
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Exact Match
Product Status	Discontinued	Active	Substitute Available

Engineering Selection Recommendations

The 590NB311M040DG from Skyworks Solutions Inc. is the qualified substitute for the discontinued AX7DAF1-311.0400C. Selection is based on the following engineering criteria:

Electrical Compatibility: All critical electrical parameters are identical or superior. The substitute maintains the same frequency, output type, supply voltage, function, and frequency stability specifications. Supply current ratings are higher, providing additional design margin.

Mechanical Compatibility: The footprint dimensions (7.00mm x 5.00mm) are identical, enabling direct PCB layout reuse. The substitute features a lower maximum height (1.80mm vs. 1.90mm), which is advantageous for space-constrained applications.

Compliance Status: Both parts maintain RoHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current and future production.

Product Availability: The substitute is currently active in production with confirmed inventory (832 pcs), providing supply chain continuity for the discontinued original part.

Package Configuration: While the SMD lead count differs (6-SMD vs. 8-SMD), the electrical and mechanical interfaces remain compatible for the specified application parameters.

Frequently Asked Questions (FAQ)

Q: Can the 590NB311M040DG be used as a direct replacement for the AX7DAF1-311.0400C?

A: Yes. Both parts share identical frequency (311.04 MHz), output type (LVDS), supply voltage (3.3V), function (Enable/Disable), and frequency stability (±25ppm). The footprint dimensions are identical (7.00mm x 5.00mm), supporting direct PCB substitution.

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

A: The package type refers to the number of solder pads on the component. Both configurations maintain the same external footprint dimensions and electrical interface. The 6-SMD configuration of the substitute part is functionally equivalent for the specified application.

Q: Are there any performance differences between these oscillators?

A: No performance differences exist in the specified parameters. The substitute features identical frequency stability (±25ppm) and operating temperature range (-40°C ~ 85°C). Supply current ratings are higher in the substitute, which provides additional design margin without affecting performance.

Q: Is the substitute part RoHS and REACH compliant?

A: Yes. The 590NB311M040DG maintains RoHS3 compliance and REACH unaffected status, matching the compliance profile of the original part.

Q: What is the moisture sensitivity level of the substitute part?

A: The substitute part has a Moisture Sensitivity Level (MSL) of 1 (Unlimited), identical to the original part. This indicates minimal moisture sensitivity and no special storage or handling requirements.

Q: Can I use the substitute in existing designs without PCB modifications?

A: Yes. The identical footprint dimensions (7.00mm x 5.00mm) and electrical specifications allow the substitute to be used without PCB layout changes. The lower maximum height (1.80mm) is a secondary benefit with no negative impact.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message