P1100EC Equivalent & Substitute Parts

Part Overview

The P1100EC is a 90V off-state thyristor transient voltage suppressor (TVS) manufactured by Littelfuse Inc. in the SIDACtor® series. This component is designed for transient overvoltage protection applications requiring 400A peak pulse current capability in a TO-226-2 package configuration. The P1100EC is currently classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations.

Substiute Parts

P1100EC

Littelfuse Inc.In Stock: 1111P1100EC Datasheet

Current PartRFQ

P1100ECL

LittelfuseIn Stock: 20129P1100ECL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P1100EC is determined by electrical and mechanical parameter equivalence. The following criteria establish functional interchangeability:

Electrical Parameters (Critical):

• Voltage - Off State: 90V
• Voltage - Breakover: 130V
• Voltage - On State: 4V
• Current - Peak Pulse (8/20µs): 400A
• Current - Peak Pulse (10/1000µs): 100A
• Current - Hold (Ih): 150mA
• Capacitance: 115pF

Mechanical Parameters (Critical):

• Package / Case: TO-226-2, TO-92-2
• Mounting Type: Through Hole
• Number of Elements: 1

Parts meeting all electrical and mechanical parameters are classified as direct substitutes. The P1100ECL satisfies all specified criteria and is therefore a valid equivalent.

Parameter Comparison

Engineering Selection Recommendations

The P1100ECL is a direct electrical and mechanical equivalent to the P1100EC. Selection of the P1100ECL is supported by the following factors:

Product Status: The P1100ECL maintains active product status with Littelfuse, ensuring ongoing availability and manufacturing support. The P1100EC is obsolete and subject to supply discontinuation.

Regulatory Compliance: The P1100ECL is ROHS3 compliant, meeting current environmental and regulatory requirements. The P1100EC is non-compliant with modern RoHS standards.

Electrical Equivalence: All critical electrical parameters—off-state voltage, breakover voltage, on-state voltage, peak pulse currents, hold current, and capacitance—are identical between the two parts.

Mechanical Compatibility: Both parts utilize identical TO-226-2 and TO-92-2 package configurations with through-hole mounting, ensuring direct PCB compatibility without layout modification.

Inventory Availability: The P1100ECL is available in significantly higher quantities (20,100 pcs) compared to the P1100EC (1,083 pcs), supporting both immediate procurement and long-term supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the P1100ECL be used as a direct replacement for the P1100EC in existing designs?

A: Yes. The P1100ECL is electrically and mechanically equivalent to the P1100EC. All electrical parameters—voltage ratings, current ratings, and capacitance—are identical. Both parts use the same TO-226-2 and TO-92-2 package configurations with through-hole mounting, requiring no PCB modifications or design changes.

Q: What is the primary difference between the P1100EC and P1100ECL?

A: The P1100ECL is the active production variant with ROHS3 compliance and higher inventory availability. The P1100EC is obsolete and non-compliant with current RoHS standards. Functionally, both parts are identical.

Q: Are there any package or pinout differences between these parts?

A: No. Both the P1100EC and P1100ECL use identical TO-226-2 and TO-92-2 package configurations. Pinout, lead spacing, and mounting requirements are identical, enabling direct PCB substitution.

Q: What electrical parameters determine substitution eligibility for this TVS thyristor?

A: Substitution is determined by matching off-state voltage (90V), breakover voltage (130V), on-state voltage (4V), peak pulse current ratings (400A at 8/20µs and 100A at 10/1000µs), hold current (150mA), and capacitance (115pF). The P1100ECL meets all these criteria.

Q: Is the P1100ECL suitable for new designs?

A: Yes. The P1100ECL is the recommended choice for new designs. It is an active product with full manufacturer support, ROHS3 compliance, and superior inventory availability compared to the obsolete P1100EC.