USB50803C-A/TR7 Equivalent & Substitute Parts

Part Overview

The USB50803C-A/TR7 is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for Ethernet applications requiring surge protection. This active product is a bidirectional Zener-type TVS diode in an 8-SOIC surface mount package. Alternative part numbers exist within the same product family to address component availability and supply chain continuity for system designs requiring this specific electrical and mechanical specification.

Substiute Parts

USB50803C-A/TR7

Microchip TechnologyIn Stock: 989USB50803C-A/TR7 Datasheet

Current PartRFQ

USB50803C/TR7

Microchip TechnologyIn Stock: 1172USB50803C/TR7 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The USB50803C/TR7 qualifies as a direct substitute for the USB50803C-A/TR7 based on electrical and mechanical parameter equivalence. Substitution is valid when the following key parameters remain unchanged:

• Voltage - Reverse Standoff (Typ): 3.3V
• Voltage - Breakdown (Min): 4V
• Voltage - Clamping (Max) @ Ipp: 11V
• Current - Peak Pulse (8/20µs): 5A
• Power - Peak Pulse: 500W
• Bidirectional Channels: 2
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C to 150°C (TJ)

Both parts share the same base product number (USB50803) and electrical characteristics, differing only in suffix designation and existing inventory status.

Parameter Comparison

Engineering Selection Recommendations

Both USB50803C-A/TR7 and USB50803C/TR7 are active products manufactured by Microchip Technology with identical electrical and mechanical specifications. Selection between these parts is based on supply chain availability and inventory status. The USB50803C/TR7 offers higher inventory availability (1145 Pcs) compared to USB50803C-A/TR7 (894 Pcs). Both parts maintain RoHS non-compliant status and REACH unaffected compliance classification. The choice between these variants does not introduce any technical risk to circuit design or manufacturing processes, as all critical performance parameters remain constant.

Frequently Asked Questions (FAQ)

Q: Can USB50803C/TR7 be used in place of USB50803C-A/TR7 without design changes? A: Yes. Both parts have identical voltage clamping characteristics (11V max @ Ipp), peak pulse current ratings (5A), and package specifications (8-SOIC). No design modifications are required.

Q: Are there any differences in thermal performance between these parts? A: No. Both parts operate within the same temperature range (-55°C to 150°C TJ) and have identical peak pulse power ratings (500W).

Q: Does the package difference affect PCB layout? A: No. Both parts use the same 8-SOIC package with identical mechanical dimensions (0.154" width, 3.90mm width).

Q: What is the significance of the suffix designation difference (-A)? A: The suffix designation does not reflect differences in electrical performance or mechanical specifications. Both parts meet the same design requirements for Ethernet protection applications.

Q: Are both parts suitable for Ethernet applications? A: Yes. Both USB50803C-A/TR7 and USB50803C/TR7 are specified for Ethernet transient voltage suppression with identical electrical parameters.