USBQ50405CE3/TR7 Equivalent & Substitute Parts

Part Overview

The USBQ50405CE3/TR7 is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for Ethernet applications requiring electrostatic discharge (ESD) and transient overvoltage protection. This surface-mount component operates with a 5V reverse standoff voltage and 12V maximum clamping voltage, providing 5A peak pulse current capability in an 8/20µs waveform profile.

The USBQ50405CE3/TR7 is currently Active in product status. Identifying equivalent and substitute parts is necessary when the primary packaging format (Tape & Reel) is unavailable or when alternative sourcing is required to maintain supply chain continuity.

Substiute Parts

USBQ50405CE3/TR7

Microchip TechnologyIn Stock: 1006USBQ50405CE3/TR7 Datasheet

Current PartRFQ

USBQNM50405CE3/TR7

Microchip TechnologyIn Stock: 3175USBQNM50405CE3/TR7 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the USBQ50405CE3/TR7 is determined by electrical and mechanical parameter equivalence. The following criteria establish valid substitution:

Electrical Parameters (Must Match Exactly):

• Voltage - Reverse Standoff (Typ): 5V
• Voltage - Breakdown (Min): 6V
• Voltage - Clamping (Max) @ Ipp: 12V
• Current - Peak Pulse (8/20µs): 5A
• Power - Peak Pulse: 500W
• Capacitance @ 1MHz: 3pF
• Operating Temperature Range: -55°C to 125°C

Mechanical Parameters (Must Match Exactly):

• Package / Case: 4-VDFN (QFN-143)
• Mounting Type: Surface Mount
• Bidirectional Channels: 1

Allowed Variation:

• Packaging format (Tape & Reel vs. Cut Tape) does not affect electrical or mechanical compatibility
• Product status differences (Active vs. Discontinued) do not affect functional equivalence

The USBQNM50405CE3/TR7 meets all electrical and mechanical requirements for direct substitution with the USBQ50405CE3/TR7.

Parameter Comparison

Engineering Selection Recommendations

USBQNM50405CE3/TR7 as Direct Substitute:

The USBQNM50405CE3/TR7 is electrically and mechanically equivalent to the USBQ50405CE3/TR7. Both components share identical electrical specifications, package geometry, and thermal operating range. The only differences are packaging format (Cut Tape vs. Tape & Reel) and product status.

Compliance Considerations:

Both parts maintain RoHS compliance and REACH unaffected status. The USBQ50405CE3/TR7 carries ROHS3 certification, while the USBQNM50405CE3/TR7 carries standard RoHS compliance. Both satisfy regulatory requirements for Ethernet protection applications.

Packaging Format Impact:

The substitution from Tape & Reel to Cut Tape format does not affect circuit performance or board-level integration. Cut Tape packaging is suitable for manual assembly, lower-volume production runs, or component-level replacement scenarios. Tape & Reel packaging is optimized for automated pick-and-place assembly in high-volume manufacturing.

Product Status Consideration:

The USBQNM50405CE3/TR7 is discontinued at DiGi Electronics. While this does not affect functional equivalence, availability may be limited through standard distribution channels. The USBQ50405CE3/TR7 remains Active and represents the preferred long-term sourcing option.

Frequently Asked Questions (FAQ)

Q: Can the USBQNM50405CE3/TR7 replace the USBQ50405CE3/TR7 in production designs?

A: Yes. The USBQNM50405CE3/TR7 is electrically and mechanically equivalent. All electrical parameters, thermal specifications, and package dimensions are identical. The only difference is packaging format (Cut Tape vs. Tape & Reel), which does not affect circuit performance or PCB integration.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on continuous carrier tape wound on reels, optimized for automated assembly equipment. Cut Tape (CT) packaging supplies the same components on shorter tape segments, suitable for manual assembly or lower-volume applications. Both formats contain identical components with no electrical or mechanical differences.

Q: Are there any compliance differences between these parts?

A: Both parts are RoHS compliant and REACH unaffected. The USBQ50405CE3/TR7 carries ROHS3 certification, while the USBQNM50405CE3/TR7 carries standard RoHS compliance. Both satisfy regulatory requirements for the intended application.

Q: Why is the USBQNM50405CE3/TR7 discontinued?

A: Product discontinuation is a manufacturer decision unrelated to technical performance or reliability. The USBQ50405CE3/TR7 remains Active and is the recommended sourcing option for new designs and ongoing production.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. Both parts use the 4-VDFN (QFN-143) package with identical pin configurations, footprints, and solder pad layouts. They are mechanically and electrically interchangeable at the board level.

Q: What applications are these TVS diodes suitable for?

A: These components are specified for Ethernet applications requiring transient overvoltage and ESD protection. The 5V reverse standoff voltage and 12V clamping voltage are typical for low-voltage digital signal line protection in network interface circuits.

Q: What is the significance of the 3pF capacitance specification?

A: The 3pF capacitance at 1MHz indicates the junction capacitance of the TVS diode. This low capacitance value minimizes signal distortion and insertion loss in high-speed Ethernet applications, making it suitable for data line protection without degrading signal integrity.