AX5DCF3-155.5200C Equivalent & Substitute Parts

Part Overview

The AX5DCF3-155.5200C is a 155.52 MHz XO (Standard) LVDS Oscillator manufactured by Abracon LLC, part of the ClearClock™ AX5 series. This component operates at 1.8V with Enable/Disable functionality in an 8-SMD, No Lead surface mount package. The part is discontinued at DiGi Electronics, making identification of compatible substitute components essential for ongoing system support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	AX5DCF3-155.5200C
Manufacturer	Abracon LLC
Series	ClearClock™ AX5
Frequency	155.52 MHz
Output Type	LVDS
Supply Voltage	1.8V
Function	Enable/Disable
Frequency Stability	±20ppm
Operating Temperature Range	-40°C ~ 85°C
Current - Supply (Max)	80mA
Package / Case	8-SMD, No Lead
Size / Dimension	0.197" L x 0.126" W (5.00mm x 3.20mm)
Height - Seated (Max)	0.059" (1.50mm)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitution of the AX5DCF3-155.5200C is determined by strict equivalence across the following critical parameters:

Frequency: 155.52 MHz (exact match required)
Output Type: LVDS (differential signaling standard)
Supply Voltage: 1.8V (logic level compatibility)
Function: Enable/Disable capability
Frequency Stability: ±20ppm (timing accuracy specification)
Operating Temperature Range: -40°C ~ 85°C (environmental operating window)
Mounting Type: Surface Mount (PCB assembly compatibility)
Physical Footprint: 5.00mm x 3.20mm (board layout constraint)

The 511JCA155M520BAG from Skyworks Solutions Inc. meets all critical electrical and mechanical substitution criteria. While the package configuration differs (6-SMD vs. 8-SMD), the physical footprint, mounting type, and all electrical parameters remain compatible for direct substitution in applications requiring 155.52 MHz LVDS oscillation at 1.8V.

Parameter Comparison

Parameter	AX5DCF3-155.5200C (Abracon)	511JCA155M520BAG (Skyworks)	Match Status
Frequency	155.52 MHz	155.52 MHz	Exact Match
Output Type	LVDS	LVDS	Exact Match
Supply Voltage	1.8V	1.8V	Exact Match
Function	Enable/Disable	Enable/Disable	Exact Match
Frequency Stability	±20ppm	±20ppm	Exact Match
Operating Temperature Range	-40°C ~ 85°C	-40°C ~ 85°C	Exact Match
Current - Supply (Max)	80mA	23mA	Compatible (Lower)
Current - Supply (Disable) (Max)	70mA	18mA	Compatible (Lower)
Package / Case	8-SMD, No Lead	6-SMD, No Lead	Different Configuration
Size / Dimension	5.00mm x 3.20mm	5.00mm x 3.20mm	Exact Match
Height - Seated (Max)	0.059" (1.50mm)	0.050" (1.28mm)	Compatible (Lower)
Mounting Type	Surface Mount	Surface Mount	Exact Match
RoHS Status	ROHS3 Compliant	Not Specified	Main Part Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Exact Match
Product Status	Discontinued at DiGi Electronics	Active	Substitute Available

Engineering Selection Recommendations

The 511JCA155M520BAG is a direct functional equivalent for the discontinued AX5DCF3-155.5200C. Selection is supported by the following engineering factors:

Electrical Compatibility: All critical electrical parameters match exactly, including frequency, output type, supply voltage, function, frequency stability, and operating temperature range. The substitute exhibits lower maximum supply current (23mA vs. 80mA) and lower disable current (18mA vs. 70mA), which represents improved power efficiency without compromising functionality.

Physical Compatibility: Both components share identical physical footprints (5.00mm x 3.20mm) and surface mount mounting type. The substitute exhibits a lower seated height (1.28mm vs. 1.50mm), which is compatible with existing PCB designs and assembly processes.

Product Status: The substitute part is currently active in production, ensuring long-term availability and supply chain continuity compared to the discontinued original part.

Compliance: The original part carries ROHS3 compliance certification. The substitute part maintains MSL 1 (Unlimited) moisture sensitivity rating, consistent with the original specification.

Frequently Asked Questions (FAQ)

Q: Can the 511JCA155M520BAG replace the AX5DCF3-155.5200C in existing designs?

A: Yes. Both components operate at 155.52 MHz with LVDS output at 1.8V supply voltage, identical frequency stability (±20ppm), and matching physical footprints. The substitute is electrically and mechanically compatible for direct substitution.

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 maintain the same external physical footprint (5.00mm x 3.20mm) and surface mount compatibility. The 6-SMD configuration of the substitute part is a valid alternative for the same application.

Q: Does the lower current consumption of the substitute part affect performance?

A: No. The lower maximum supply current (23mA vs. 80mA) and disable current (18mA vs. 70mA) of the substitute part indicate improved power efficiency. Both parts meet the same frequency stability and output specifications, with no performance degradation.

Q: Are there any height clearance concerns with the substitute part?

A: The substitute part has a lower seated height (1.28mm vs. 1.50mm), which is compatible with existing PCB designs. This represents a favorable characteristic for space-constrained applications.

Q: What is the availability status of the substitute part?

A: The 511JCA155M520BAG is currently active in production, ensuring reliable long-term availability and supply chain support compared to the discontinued original part.

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