SP723AB Equivalent & Substitute Parts

Part Overview

The SP723AB is a Transient Voltage Suppressors (TVS) device manufactured by Littelfuse, designed for circuit protection applications. This mixed-technology component features 6 circuits in an 8-SOIC surface mount package. The SP723AB is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Substiute Parts

SP723AB

LittelfuseIn Stock: 19564SP723AB Datasheet

Current PartRFQ

SP723ABG

Littelfuse Inc.In Stock: 9155SP723ABG Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SP723AB is determined by the following critical parameters:

• Package / Case: 8-SOIC (0.154", 3.90mm Width) — physical and electrical compatibility requirement
• Number of Circuits: 6 — functional requirement for multi-channel protection
• Technology: Mixed Technology — internal circuit architecture
• Mounting Type: Surface Mount — PCB assembly compatibility
• Applications: General Purpose — functional scope

The SP723ABG qualifies as a direct substitute based on matching all critical parameters. The primary distinction is product status and compliance certification, not electrical or mechanical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The SP723ABG is the direct equivalent for the obsolete SP723AB. Selection between these parts is determined by regulatory and compliance requirements:

SP723ABG — Recommended for new designs and ongoing procurement. This part is active in production, ROHS3 compliant, and REACH unaffected. It maintains identical electrical and mechanical specifications to the SP723AB while offering current manufacturing support and regulatory compliance.

SP723AB — Applicable only for legacy system maintenance where RoHS non-compliance is acceptable and existing inventory is available. This part is obsolete and no longer in active production.

Frequently Asked Questions (FAQ)

Q: Can SP723ABG replace SP723AB in existing designs? A: Yes. Both parts share identical package geometry (8-SOIC), circuit count (6), technology (Mixed), and mounting type (Surface Mount). Direct PCB substitution is supported without layout modification.

Q: What is the primary difference between SP723AB and SP723ABG? A: Product status and compliance. SP723ABG is active and ROHS3 compliant, while SP723AB is obsolete and RoHS non-compliant. Electrical and mechanical specifications are equivalent.

Q: Are there packaging differences between these parts? A: The SP723AB packaging is unspecified in available data. The SP723ABG is supplied in Tube packaging. Both use the 8-SOIC case format with identical dimensions (0.154", 3.90mm Width).

Q: Is the SP723ABG suitable for new product development? A: Yes. The SP723ABG is the active production equivalent and is recommended for all new designs requiring this TVS device configuration.

Q: What is the Moisture Sensitivity Level for both parts? A: Both SP723AB and SP723ABG have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.