Littelfuse P0300EA TVS Thyristor Equivalent & Substitute Parts

Part Overview

The Littelfuse P0300EA is a 25V off-state transient voltage suppressor (TVS) thyristor in the SIDACtor® series, rated for 150 A peak pulse current (8/20µs). This component is designed for transient overvoltage protection in electronic circuits. The P0300EA is currently classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

P0300EA

Littelfuse Inc.In Stock: 2431P0300EA Datasheet

Current PartRFQ

P0300EAL

Littelfuse Inc.In Stock: 20250P0300EAL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P0300EA is determined by strict equivalence across the following critical parameters:

• Voltage ratings: Breakover voltage (40V), off-state voltage (25V), and on-state voltage (4V) must match exactly
• Current specifications: Peak pulse current at 8/20µs (150A) and 10/1000µs (45A) must be identical
• Hold current: 50 mA threshold must be maintained
• Capacitance: 140 pF specification must be preserved
• Package and mounting: TO-226-2 / TO-92-2 through-hole configuration must be retained
• Series compatibility: SIDACtor® series designation

The P0300EAL meets all these criteria and is the direct functional equivalent of the P0300EA.

Parameter Comparison

Engineering Selection Recommendations

The P0300EAL is the direct substitute for the P0300EA. Both components are manufactured by Littelfuse Inc. and share identical electrical and mechanical specifications across all critical parameters.

Key considerations for selection:

• Product Status: The P0300EA is obsolete. The P0300EAL is active and maintains full manufacturing support.
• Regulatory Compliance: The P0300EAL is ROHS3 compliant, whereas the P0300EA is non-compliant. For new designs or systems requiring regulatory compliance, the P0300EAL is the appropriate choice.
• Availability: The P0300EAL has significantly higher inventory availability (20,200 pcs vs. 2,407 pcs), ensuring supply chain continuity.
• Packaging: The P0300EAL is supplied in bulk packaging, while the P0300EA packaging is unspecified. Both use identical component packages (TO-226-2 / TO-92-2).

For applications currently using the P0300EA, direct replacement with the P0300EAL requires no circuit modifications or re-qualification.

Frequently Asked Questions (FAQ)

Q: Can the P0300EAL replace the P0300EA in existing designs?

A: Yes. The P0300EAL is electrically and mechanically identical to the P0300EA. All voltage ratings, current specifications, capacitance, and package configurations match exactly. Direct substitution is possible without circuit changes.

Q: What is the difference between the P0300EA and P0300EAL?

A: The primary differences are product status and regulatory compliance. The P0300EA is obsolete and RoHS non-compliant. The P0300EAL is active, ROHS3 compliant, and has higher inventory availability. Electrical and mechanical specifications are identical.

Q: Are there any package or mounting differences?

A: No. Both parts use the same TO-226-2 / TO-92-2 through-hole package configuration. PCB layout and mounting procedures are identical.

Q: Why should I use the P0300EAL instead of the P0300EA?

A: The P0300EA is obsolete and has limited inventory. The P0300EAL is the active equivalent with full manufacturing support, regulatory compliance, and superior availability. For new designs or system refreshes, the P0300EAL is the recommended choice.

Q: Do I need to re-test my circuit if I switch from P0300EA to P0300EAL?

A: No re-testing is required for functional equivalence. Both components have identical electrical characteristics. However, compliance verification may be necessary if your system requires RoHS certification.

Q: What is the hold current specification, and why does it matter?

A: The hold current (Ih) is 50 mA for both parts. This is the minimum current required to maintain the thyristor in the on-state. Matching this specification ensures consistent transient suppression behavior in your circuit.