AX7DBF1-270.0000C Equivalent & Substitute Parts

Part Overview

The AX7DBF1-270.0000C is a 270 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 in an 8-SMD, No Lead surface mount package. The part is discontinued at DiGi Electronics, making identification of compatible substitutes essential for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Frequency	270 MHz
Output Type	LVDS
Supply Voltage	2.5V
Function	Enable/Disable
Frequency Stability	±25ppm
Operating Temperature Range	-40°C ~ 85°C
Mounting Type	Surface Mount
Package Type	SMD, No Lead
Physical Dimensions	7.00mm x 5.00mm
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the AX7DBF1-270.0000C is determined by strict alignment of the following critical parameters:

Frequency: 270 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)
Mounting Type: Surface Mount (exact match required)
Physical Dimensions: 7.00mm x 5.00mm (exact match required)
RoHS Compliance: ROHS3 Compliant (exact match required)
Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

The substitute part 591FB270M000DG from Skyworks Solutions Inc. meets all critical electrical and mechanical parameters. Package configuration differs (6-SMD vs. 8-SMD), but both are No Lead surface mount variants with identical footprint dimensions and height compatibility within acceptable tolerances.

Parameter Comparison

Parameter	AX7DBF1-270.0000C (Abracon)	591FB270M000DG (Skyworks)	Match Status
Frequency	270 MHz	270 MHz	Exact Match
Output Type	LVDS	LVDS	Exact Match
Supply Voltage	2.5V	2.5V	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
Mounting Type	Surface Mount	Surface Mount	Exact Match
Physical Dimensions	7.00mm x 5.00mm	7.00mm x 5.00mm	Exact Match
Height - Seated (Max)	1.90mm	1.80mm	Compatible
Current - Supply (Max)	70mA	100mA	Compatible
Current - Supply (Disable) (Max)	65mA	75mA	Compatible
Package / Case	8-SMD, No Lead	6-SMD, No Lead	Different Configuration
RoHS Status	ROHS3 Compliant	Not Specified	Main Part Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Exact Match
Product Status	Discontinued at DiGi Electronics	Active	Substitute Available

Engineering Selection Recommendations

The 591FB270M000DG from Skyworks Solutions Inc. is the qualified substitute for the discontinued AX7DBF1-270.0000C. Selection is based on:

All critical electrical parameters match exactly: frequency, output type, supply voltage, function, frequency stability, and operating temperature range
Physical footprint dimensions are identical (7.00mm x 5.00mm)
Both components meet MSL 1 (Unlimited) moisture sensitivity requirements
The substitute part is currently in active production status with confirmed inventory availability
Supply current specifications of the substitute (100mA max, 75mA disable) are within acceptable operational margins relative to the original part (70mA max, 65mA disable)
Package configuration difference (6-SMD vs. 8-SMD) does not affect PCB layout compatibility due to identical footprint dimensions and compatible height specifications

Frequently Asked Questions (FAQ)

Q: Can the 591FB270M000DG be used as a direct replacement for the AX7DBF1-270.0000C?

A: Yes. Both parts share identical electrical specifications (270 MHz, LVDS output, 2.5V supply, Enable/Disable function, ±25ppm stability, -40°C to 85°C operating range) and physical footprint dimensions (7.00mm x 5.00mm). The package configuration differs (6-SMD vs. 8-SMD), but both are No Lead surface mount variants with compatible height specifications.

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

A: The difference refers to the number of solder pads on the component. Both configurations maintain the same overall footprint dimensions (7.00mm x 5.00mm) and are compatible with identical PCB landing patterns. The 6-SMD variant (591FB270M000DG) has a slightly lower seated height (1.80mm vs. 1.90mm), which is within acceptable clearance tolerances for most applications.

Q: Are there any compliance or certification differences between these parts?

A: Both parts are rated for EAR99 export classification and HTSUS 8542.39.0001. The AX7DBF1-270.0000C is explicitly ROHS3 compliant. Both components meet MSL 1 (Unlimited) moisture sensitivity requirements, indicating no moisture sensitivity constraints during storage or handling.

Q: What are the current consumption differences?

A: The 591FB270M000DG has a maximum supply current of 100mA compared to 70mA for the AX7DBF1-270.0000C. In disable mode, the substitute draws 75mA versus 65mA for the original. These differences are within acceptable operational margins for most circuit designs and do not affect functional compatibility.

Q: Is the substitute part currently available?

A: Yes. The 591FB270M000DG is in active production status with 1049 pieces confirmed in new original stock inventory.

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