USB50803C/TR13 Equivalent & Substitute Parts

Part Overview

The USB50803C/TR13 is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, designed for transient overvoltage protection in Ethernet applications. This surface-mount component operates with a 3.3V reverse standoff voltage and provides 11V maximum clamping voltage at peak pulse current. The device is classified as Active product status and is available in 8-SOIC packaging suitable for high-density circuit board layouts.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs while maintaining identical functional specifications.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	3.3	V
Voltage - Breakdown (Min)	4	V
Voltage - Clamping (Max) @ Ipp	11	V
Current - Peak Pulse (8/20µs)	5	A
Power - Peak Pulse	500	W
Capacitance @ 1MHz	3	pF
Operating Temperature Range	-55 to 150	°C (TJ)
Bidirectional Channels	2	Channels
Package / Case	8-SOIC (0.154", 3.90mm Width)	-
Mounting Type	Surface Mount	-

Substitute Part Grouping Explanation

Substitution eligibility for the USB50803C/TR13 is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

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
Capacitance @ 1MHz: 3pF

Mechanical Specifications:

Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Bidirectional Channels: 2

Environmental & Compliance:

Operating Temperature Range: -55°C to 150°C (TJ)
Moisture Sensitivity Level (MSL): 1 (Unlimited)
RoHS Status: RoHS non-compliant
REACH Status: REACH Unaffected

Parts meeting all specified parameters are classified as direct substitutes and are interchangeable at the component level without circuit redesign or performance degradation.

Parameter Comparison

Parameter	USB50803C/TR13	USB50803C/TR7	Match
Manufacturer	Microchip Technology	Microchip Technology	✓
Category	Transient Voltage Suppressors (TVS)	Transient Voltage Suppressors (TVS)	✓
Type	Zener	Zener	✓
Bidirectional Channels	2	2	✓
Voltage - Reverse Standoff (Typ)	3.3V	3.3V	✓
Voltage - Breakdown (Min)	4V	4V	✓
Voltage - Clamping (Max) @ Ipp	11V	11V	✓
Current - Peak Pulse (8/20µs)	5A	5A	✓
Power - Peak Pulse	500W	500W	✓
Capacitance @ 1MHz	3pF	3pF	✓
Operating Temperature	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	✓
Mounting Type	Surface Mount	Surface Mount	✓
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	✓
Supplier Device Package	8-SO	8-SO	✓
Base Product Number	USB50803	USB50803	✓
Product Status	Active	Active	✓
RoHS Status	RoHS non-compliant	RoHS non-compliant	✓
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	✓
REACH Status	REACH Unaffected	REACH Unaffected	✓
Packaging	Tape & Reel (TR)	Tape & Reel (TR)	✓

Engineering Selection Recommendations

The USB50803C/TR7 is a direct functional equivalent to the USB50803C/TR13. Both components share identical electrical specifications, mechanical packaging, and compliance certifications. The distinction between these part numbers relates to packaging reel configuration (TR13 versus TR7), which affects quantity per reel and supply chain logistics but does not impact component performance or circuit functionality.

Both parts maintain Active product status from Microchip Technology and carry identical RoHS non-compliant and REACH Unaffected designations. Selection between these parts is based on inventory availability, reel quantity requirements, and supply chain considerations rather than technical performance criteria.

The 8-SOIC surface-mount package ensures compatibility with standard PCB assembly processes and automated placement equipment. The MSL 1 (Unlimited) moisture sensitivity rating indicates no special moisture control requirements during storage or handling.

Frequently Asked Questions (FAQ)

Q: Can USB50803C/TR7 be used as a direct replacement for USB50803C/TR13 in production?

A: Yes. Both parts are electrically and mechanically identical. The difference in part number (TR13 versus TR7) indicates different tape reel configurations only. Component performance, pinout, and package dimensions are identical.

Q: What does the "TR" designation in the part number indicate?

A: The "TR" suffix indicates Tape & Reel packaging format. The numeric suffix (13 or 7) specifies the reel configuration and quantity per reel, affecting supply chain and procurement logistics but not component specifications.

Q: Are there any PCB layout or assembly considerations when substituting between these parts?

A: No. Both parts use identical 8-SOIC (0.154", 3.90mm Width) packaging. PCB footprints, solder pad layouts, and assembly processes remain unchanged.

Q: Do these parts require different handling or storage procedures?

A: No. Both parts carry MSL 1 (Unlimited) moisture sensitivity rating, indicating identical storage and handling requirements with no special moisture control measures needed.

Q: What is the primary application for these TVS diodes?

A: These components are specified for Ethernet transient overvoltage protection, providing bidirectional clamping of transient voltage spikes to safe levels.

Q: Are both parts currently in active production?

A: Yes. Both USB50803C/TR13 and USB50803C/TR7 maintain Active product status from Microchip Technology.

Q: What compliance certifications apply to both parts?

A: Both parts are RoHS non-compliant and REACH Unaffected. No additional compliance certifications are specified for this component category.

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