AOZ8073DI Equivalent & Substitute Parts

Part Overview

The AOZ8073DI is a 2nd order RC (Pi) EMI filter manufactured by Alpha & Omega Semiconductor Inc., designed for low-pass filtering applications in data line protection for mobile devices. This component features 4 channels with 100 Ohm resistance and 8 pF capacitance per channel, rated for 20 mA operation at 5V with -20dB attenuation across the 1GHz to 3GHz frequency range.

The AOZ8073DI is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and maintenance applications.

Substiute Parts

AOZ8073DI

Alpha & Omega Semiconductor Inc.In Stock: 9718AOZ8073DI Datasheet

Current PartRFQ

TPD4F003DQDR

Texas InstrumentsIn Stock: 63485TPD4F003DQDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AOZ8073DI is determined by the following critical parameters:

• Filter Configuration: 2nd order RC (Pi) topology with 4 channels
• Electrical Specifications: 100 Ohm resistance and capacitance value within acceptable tolerance (8 pF nominal)
• Frequency Response: Cutoff frequency in the 200-220 MHz range with attenuation performance suitable for 1GHz+ EMI suppression
• Current and Voltage Ratings: Minimum 20 mA current handling at rated voltage
• Package Compatibility: Surface mount 8-pin UFDFN or WFDFN with exposed pad
• Environmental Compliance: ROHS3 compliance, MSL 1 rating, and -40°C to 85°C operating range

The TPD4F003DQDR from Texas Instruments meets these substitution criteria with equivalent electrical performance and compatible packaging.

Parameter Comparison

Engineering Selection Recommendations

The TPD4F003DQDR is an active product from Texas Instruments with confirmed ROHS3 compliance and MSL 1 rating, matching the environmental and regulatory requirements of the obsolete AOZ8073DI. Both components share identical filter topology, channel count, and resistance specifications. The capacitance variance (8 pF vs 8.5 pF) and cutoff frequency difference (220 MHz vs 200 MHz) remain within the functional parameters for 4-channel EMI filtering in data line applications. The TPD4F003DQDR package (8-WFDFN) is mechanically compatible with the original 8-UFDFN footprint for surface mount assembly. Active production status and documented inventory availability make the TPD4F003DQDR a viable substitute for design continuation and component replenishment.

Frequently Asked Questions (FAQ)

Q: Can the TPD4F003DQDR directly replace the AOZ8073DI in existing designs?

A: Yes. Both components are 4-channel, 2nd order RC (Pi) filters with 100 Ohm resistance and equivalent capacitance values. The 8-WFDFN package is mechanically compatible with the 8-UFDFN footprint for surface mount applications. Electrical performance is suitable for the same data line filtering applications.

Q: What is the significance of the capacitance difference (8 pF vs 8.5 pF)?

A: The 0.5 pF variance represents a 6.25% tolerance difference. This minor variation results in a 20 MHz cutoff frequency shift (220 MHz to 200 MHz) while maintaining adequate attenuation performance for 1GHz+ EMI suppression in the specified application range.

Q: Are there package footprint considerations for PCB redesign?

A: The TPD4F003DQDR uses 8-WFDFN packaging versus the original 8-UFDFN. Dimensional differences are minimal: the substitute is 0.1mm shorter in length, 0.15mm wider, and 0.19mm taller. PCB footprints require verification for height clearance and land pattern compatibility, though both packages are standard 8-pin WFDFN/UFDFN variants.

Q: Is the TPD4F003DQDR suitable for the same operating temperature range?

A: Yes. Both components operate across -40°C to 85°C, meeting identical environmental specifications for mobile device data line applications.

Q: What compliance certifications apply to the substitute part?

A: The TPD4F003DQDR is ROHS3 compliant, REACH unaffected, and carries MSL 1 (unlimited moisture sensitivity level) rating, matching the regulatory and environmental compliance of the original AOZ8073DI.