PESD1USB3B/CX Equivalent & Substitute Parts

Part Overview

The PESD1USB3B/CX is a Transient Voltage Suppressor (TVS) diode manufactured by Nexperia USA Inc., designed for high-speed data line protection in USB and HDMI applications. This bidirectional Zener diode operates in a compact 5-WLCSP surface mount package and provides transient voltage clamping with a peak pulse current rating of 9.5A (8/20µs). The part is currently listed as obsolete, necessitating identification of functionally equivalent active alternatives to maintain design continuity and ensure supply chain availability.

Substiute Parts

PESD1USB3B/CX

Nexperia USA Inc.In Stock: 1132PESD1USB3B/CX Datasheet

Current PartRFQ

PESD1USB3B/CZ

Nexperia USA Inc.In Stock: 760PESD1USB3B/CZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PESD1USB3B/CX is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Reverse standoff voltage: 4V (Max)
• Breakdown voltage minimum: 6V
• Peak pulse current rating: 9.5A (8/20µs)
• Capacitance: 0.29pF @ 1MHz
• Bidirectional Zener topology with single channel configuration

Mechanical Equivalence Criteria:

• Package type: 5-WLCSP (0.77x1.17)
• Surface mount configuration
• Operating temperature range: -40°C ~ 125°C

Compliance Equivalence Criteria:

• RoHS3 compliance
• REACH unaffected status
• MSL rating: 1 (Unlimited)

The PESD1USB3B/CZ meets all specified criteria and is classified as the manufacturer-recommended substitute. Both parts share identical electrical specifications, package geometry, and compliance certifications, with the primary distinction being product status (active vs. obsolete) and packaging format (Tape & Reel vs. standard packaging).

Parameter Comparison

Engineering Selection Recommendations

The PESD1USB3B/CZ is the direct functional equivalent and manufacturer-recommended substitute for the obsolete PESD1USB3B/CX. Both parts are manufactured by Nexperia USA Inc. and maintain identical electrical performance specifications across all critical parameters: reverse standoff voltage, breakdown voltage, peak pulse current, and capacitance characteristics.

Selection of the PESD1USB3B/CZ is supported by:

• Active product status ensuring continued availability and manufacturing support
• Full compliance with ROHS3 and REACH regulatory requirements
• Identical package geometry (5-WLCSP 0.77x1.17) enabling direct PCB layout compatibility
• Equivalent MSL rating (1 - Unlimited) for storage and handling
• Tape & Reel packaging format suitable for automated assembly processes

No electrical redesign or PCB modification is required when transitioning from PESD1USB3B/CX to PESD1USB3B/CZ.

Frequently Asked Questions (FAQ)

Q: Can PESD1USB3B/CZ be used as a direct replacement for PESD1USB3B/CX?

A: Yes. Both parts are electrically and mechanically identical. The PESD1USB3B/CZ is the active equivalent with no design changes required for substitution.

Q: What is the primary difference between these two part numbers?

A: The PESD1USB3B/CX is obsolete, while PESD1USB3B/CZ is active. The packaging format differs (standard vs. Tape & Reel), but electrical specifications and package geometry are identical.

Q: Are there any PCB layout considerations when switching to the substitute part?

A: No. Both parts use the identical 5-WLCSP (0.77x1.17) package, ensuring direct compatibility with existing PCB designs without layout modifications.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both PESD1USB3B/CX and PESD1USB3B/CZ are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (Unlimited).

Q: What applications are these TVS diodes suitable for?

A: Both parts are specified for HDMI and USB transient voltage suppression applications, providing bidirectional clamping protection on high-speed data lines.

Q: Is the capacitance specification important for my application?

A: Yes. The 0.29pF @ 1MHz capacitance is critical for high-speed signal integrity in USB and HDMI circuits. Both parts maintain this specification identically.

Q: What is the operating temperature range for these parts?

A: Both parts operate across -40°C to 125°C ambient temperature range, suitable for industrial and consumer applications.