P0722SARP Equivalent & Substitute Parts

Part Overview

The P0722SARP is a 65V off-state, 150A peak pulse TVS thyristor manufactured by Littelfuse Inc. in the DO-214AA (SMB) package. This component is classified as a Transient Voltage Suppressor and is part of the TwinChip™ series. The product is currently obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and component procurement.

Substiute Parts

P0722SARP

Littelfuse Inc.In Stock: 1192P0722SARP Datasheet

Current PartRFQ

SMP100LC-65

STMicroelectronicsIn Stock: 55194SMP100LC-65 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P0722SARP is determined by the following critical parameters:

• Voltage Rating (Off-State): Must match 65V to ensure equivalent protection threshold
• Package / Case: Must be DO-214AA (SMB) for mechanical and thermal compatibility
• Mounting Type: Must be Surface Mount for PCB integration compatibility
• Current Handling Capability: Peak pulse current rating must meet or exceed application requirements
• Electrical Characteristics: Breakover voltage, on-state voltage, and hold current must be within acceptable operating ranges

The SMP100LC-65 meets these substitution criteria with identical off-state voltage (65V), compatible breakover voltage (85V vs. 88V), and the same DO-214AA package. The substitute provides enhanced current handling (400A peak pulse vs. 150A) and improved RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

The SMP100LC-65 is the designated manufacturer-recommended substitute for the P0722SARP. Selection is based on the following factors:

• Voltage Compatibility: Both components maintain 65V off-state voltage rating, ensuring equivalent circuit protection thresholds
• Package Compatibility: Identical DO-214AA (SMB) package enables direct PCB footprint compatibility
• Current Performance: The SMP100LC-65 provides superior current handling (400A vs. 150A peak pulse), offering enhanced margin for transient suppression
• Product Status: The SMP100LC-65 is actively manufactured, ensuring long-term availability and supply chain stability
• Regulatory Compliance: ROHS3 compliance of the SMP100LC-65 aligns with current environmental and regulatory requirements, whereas the P0722SARP is non-compliant

The substitute component is suitable for direct replacement in applications where the original P0722SARP is no longer available.

Frequently Asked Questions (FAQ)

Q: Can the SMP100LC-65 be used as a direct replacement for the P0722SARP?

A: Yes. Both components share identical off-state voltage (65V), compatible breakover voltage (85V vs. 88V), and the same DO-214AA package. The SMP100LC-65 provides equivalent or superior electrical performance across all specified parameters.

Q: What is the significance of the different number of elements (2 vs. 1)?

A: The P0722SARP contains two internal elements (TwinChip™ configuration), while the SMP100LC-65 contains one element. This structural difference does not affect substitution compatibility, as both devices meet the required electrical specifications for the DO-214AA package and voltage rating.

Q: How does the higher capacitance of the SMP100LC-65 (90pF vs. 45pF) affect circuit performance?

A: The capacitance difference is a characteristic of the different internal designs. The SMP100LC-65's higher capacitance is within the normal range for single-element TVS thyristors in this voltage class and does not preclude substitution. Circuit validation should confirm compatibility with specific application requirements.

Q: Is the higher current rating of the SMP100LC-65 (400A vs. 150A) a concern?

A: No. A higher current rating provides additional margin for transient suppression and does not negatively impact circuit operation. The component will operate within its rated specifications in the original application.

Q: What are the packaging and availability differences?

A: The P0722SARP is obsolete with limited remaining inventory. The SMP100LC-65 is actively produced by STMicroelectronics with substantial inventory availability (55,100 pcs), ensuring reliable procurement for new designs and ongoing production.

Q: Are there any compliance or certification differences?

A: Yes. The SMP100LC-65 is ROHS3 compliant and REACH unaffected, meeting current environmental standards. The P0722SARP is RoHS non-compliant. For applications subject to environmental regulations, the SMP100LC-65 is the appropriate choice.