P1500ECMC Equivalent & Substitute Parts

Part Overview

The P1500ECMC is a 140V off-state TVS thyristor manufactured by Littelfuse Inc. in the SIDACtor® series, designed for transient voltage suppression applications. This component features a TO-226-2 package with 400A peak pulse current capability (8/20µs). The part is currently classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and new designs requiring this performance class.

Substiute Parts

P1500ECMC

Littelfuse Inc.In Stock: 942P1500ECMC Datasheet

Current PartRFQ

P1500ECMCL

Littelfuse Inc.In Stock: 1087P1500ECMCL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P1500ECMC is determined by electrical and mechanical parameter equivalence within the TVS thyristor category. The critical parameters governing substitutability are:

• Voltage - Off State: 140V
• Voltage - Breakover: 180V
• Voltage - On State: 4V
• Current - Peak Pulse (8/20µs): 400A
• Current - Peak Pulse (10/1000µs): 100A
• Current - Hold (Ih): 150mA
• Capacitance: 55pF
• Package / Case: TO-226-2, TO-92-2
• Mounting Type: Through Hole

Parts matching all these parameters are classified as direct electrical and mechanical equivalents. The P1500ECMCL meets all specified criteria and is therefore a valid substitute.

Parameter Comparison

Engineering Selection Recommendations

The P1500ECMCL is the direct substitute for the obsolete P1500ECMC. Both parts are manufactured by Littelfuse Inc. and share identical electrical and mechanical specifications across all critical parameters. The P1500ECMCL is currently in active production status, ensuring long-term availability and supply chain continuity.

The P1500ECMCL offers improved compliance posture, meeting ROHS3 standards compared to the non-compliant status of the original P1500ECMC. This compliance improvement is significant for applications subject to environmental regulations. Both parts maintain identical moisture sensitivity levels and ECCN/HTSUS classifications.

Selection between these parts should be based on compliance requirements and supply availability. For new designs or systems requiring regulatory compliance, the P1500ECMCL is the appropriate choice. For legacy system maintenance where compliance is not a constraint, either part provides equivalent electrical performance.

Frequently Asked Questions (FAQ)

Q: Can the P1500ECMCL directly replace the P1500ECMC in existing designs?

A: Yes. The P1500ECMCL is electrically and mechanically identical to the P1500ECMC across all specified parameters, including voltage ratings, current ratings, capacitance, and package configuration. Direct substitution is valid without circuit modification.

Q: What is the primary difference between P1500ECMC and P1500ECMCL?

A: The P1500ECMCL is the active production variant with ROHS3 compliance, while the P1500ECMC is obsolete and RoHS non-compliant. Electrical performance is identical.

Q: Are there package compatibility considerations?

A: Both parts use the TO-226-2 and TO-92-2 package configurations with through-hole mounting. PCB layout and footprint compatibility is maintained between the two parts.

Q: What is the significance of the product status difference?

A: The P1500ECMC is classified as obsolete, indicating discontinued production. The P1500ECMCL is in active production, ensuring availability for current and future procurement. For new designs, the P1500ECMCL should be specified.

Q: Does the RoHS compliance difference affect electrical performance?

A: No. RoHS compliance relates to material composition and environmental standards, not electrical characteristics. Both parts deliver identical electrical performance in circuit operation.