P2703AC Equivalent & Substitute Parts

Part Overview

The P2703AC is a Transient Voltage Suppressor (TVS) thyristor manufactured by Littelfuse Inc. under the SIDACtor® series. This component is designed for overvoltage protection applications requiring 230V off-state voltage rating with 400A peak pulse current capability in a 3-SIP through-hole package configuration. The P2703AC is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations.

Substiute Parts

P2703AC

Littelfuse Inc.In Stock: 1163P2703AC Datasheet

Current PartRFQ

P2703ACL

Littelfuse Inc.In Stock: 5219P2703ACL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P2703AC is determined by electrical parameter equivalence and mechanical compatibility. The critical parameters defining substitutability are:

• Voltage ratings (breakover, off-state, and on-state)
• Peak pulse current specifications (both 8/20µs and 10/1000µs waveforms)
• Hold current (Ih) threshold
• Number of elements (3-element configuration)
• Capacitance values
• Physical package format (3-SIP / TO-220 Modified through-hole)

The P2703ACL meets all these criteria with identical electrical specifications and maintains the same physical package configuration, establishing it as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The P2703ACL is the direct equivalent for P2703AC applications. Both components share identical electrical specifications across all voltage and current parameters, ensuring functional interchangeability in circuit designs. The primary distinction is product lifecycle status: P2703AC is obsolete while P2703ACL maintains active production status with improved regulatory compliance (ROHS3 Compliant versus RoHS non-compliant). For new designs and ongoing system support, P2703ACL is the appropriate selection. For legacy system maintenance requiring exact historical component matching, P2703AC remains available in limited inventory (1102 pcs).

Frequently Asked Questions (FAQ)

Q: Can P2703ACL directly replace P2703AC in existing circuits? A: Yes. The P2703ACL provides identical electrical performance across all specified parameters including voltage ratings, peak pulse currents, and hold current. Physical package configuration (3-SIP / TO-220 Modified) is identical, enabling direct board-level substitution.

Q: What is the difference between P2703AC and P2703ACL? A: The components are electrically equivalent. The primary differences are product status (P2703AC is obsolete; P2703ACL is active) and regulatory compliance (P2703ACL is ROHS3 compliant; P2703AC is not). Packaging differs only in supplier format (P2703AC is unspecified; P2703ACL is bulk).

Q: Are there any compatibility concerns when switching from P2703AC to P2703ACL? A: No compatibility concerns exist. Identical electrical specifications and package format ensure seamless integration. The ROHS3 compliance of P2703ACL represents an improvement for regulatory requirements.

Q: What parameters must match for a valid substitute? A: Valid substitutes must maintain identical voltage ratings (300V breakover, 230V off-state, 8V on-state), peak pulse currents (400A at 8/20µs, 100A at 10/1000µs), hold current (150mA), element count (3), capacitance values (50pF, 75pF), and physical package format (3-SIP through-hole).