P0300ECMCAP Equivalent & Substitute Parts

Part Overview

The P0300ECMCAP is a 6V off-state TVS thyristor manufactured by Littelfuse Inc. in the SIDACtor® series, housed in a TO-226-2 package. This component is designed for transient voltage suppression applications requiring 400 A peak pulse current capability. The part is currently obsolete, making identification of suitable substitutes essential for ongoing system support and new design implementations.

Substiute Parts

P0300ECMCAP

Littelfuse Inc.In Stock: 1027P0300ECMCAP Datasheet

Current PartRFQ

P0300ECMCLAP

Littelfuse Inc.In Stock: 733P0300ECMCLAP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of TVS thyristors is determined by electrical compatibility across voltage and current ratings. The P0300ECMCAP can be substituted with the P0300ECMCLAP based on the following criteria:

Matching Parameters:

• Current - Peak Pulse (8/20µs): 400A (identical)
• Current - Peak Pulse (10/1000µs): 100A (identical)
• Current - Hold (Ih): 50mA (identical)
• Voltage - On State: 4V (identical)
• Capacitance: 45pF (identical)
• Package / Case: TO-226-2, TO-92-2 (identical)
• Mounting Type: Through Hole (identical)
• Number of Elements: 1 (identical)

Differing Parameters:

• Voltage - Off State: 6V (P0300ECMCAP) vs. 25V (P0300ECMCLAP)
• Voltage - Breakover: 25V (P0300ECMCAP) vs. 40V (P0300ECMCLAP)

The P0300ECMCLAP operates at a higher voltage rating, making it suitable for applications requiring greater off-state voltage suppression capability while maintaining identical current handling and physical form factor.

Parameter Comparison

Engineering Selection Recommendations

The P0300ECMCLAP is the direct substitute for the obsolete P0300ECMCAP. Selection should be based on the following factors:

Product Status: The P0300ECMCAP is obsolete, while the P0300ECMCLAP maintains active product status with ongoing manufacturer support and availability.

Regulatory Compliance: The P0300ECMCLAP is ROHS3 compliant, whereas the P0300ECMCAP is non-compliant. For applications subject to RoHS regulations, the P0300ECMCLAP is the required choice.

Voltage Rating Consideration: The P0300ECMCLAP operates at higher voltage ratings (25V off-state, 40V breakover) compared to the P0300ECMCAP (6V off-state, 25V breakover). Circuit design must accommodate this voltage difference to ensure proper transient suppression performance.

Current Handling: Both parts maintain identical peak pulse current ratings (400A at 8/20µs), ensuring equivalent surge protection capability.

Frequently Asked Questions (FAQ)

Q: Can the P0300ECMCLAP directly replace the P0300ECMCAP in existing designs?

A: Direct replacement is possible only if the circuit design accommodates the higher voltage ratings of the P0300ECMCLAP (25V off-state vs. 6V off-state). The identical current handling and physical package ensure mechanical and thermal compatibility.

Q: What is the primary difference between these two parts?

A: The primary difference is the off-state voltage rating. The P0300ECMCAP operates at 6V off-state, while the P0300ECMCLAP operates at 25V off-state. Both maintain identical current ratings and package specifications.

Q: Are there any compliance differences between the two parts?

A: Yes. The P0300ECMCLAP is ROHS3 compliant, while the P0300ECMCAP is RoHS non-compliant. For new designs or applications subject to RoHS regulations, the P0300ECMCLAP is required.

Q: Do both parts use the same package?

A: Yes. Both the P0300ECMCAP and P0300ECMCLAP use the TO-226-2 and TO-92-2 (TO-226AC) package with formed leads, ensuring identical PCB footprint and mounting requirements.

Q: What is the hold current specification for these TVS thyristors?

A: Both parts maintain a hold current (Ih) of 50mA, ensuring consistent latching behavior in transient suppression applications.