P1500SCLRP Equivalent & Substitute Parts

Part Overview

The P1500SCLRP is a 140V off-state thyristor TVS device manufactured by Littelfuse Inc., designed for transient voltage suppression applications. Packaged in DO-214AA (SMB) surface mount format, this SIDACtor® series component provides 400A peak pulse current capability at 8/20µs pulse width. The device is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts may be required due to supply constraints, regional availability, or specific packaging preferences while maintaining equivalent electrical performance.

Substiute Parts

P1500SCLRP

Littelfuse Inc.In Stock: 1337P1500SCLRP Datasheet

Current PartRFQ

SMP100LC-140

STMicroelectronicsIn Stock: 4249SMP100LC-140 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P1500SCLRP with the SMP100LC-140 is based on equivalence across the following critical electrical and mechanical parameters:

• Off-State Voltage: Both devices rated at 140V, ensuring identical voltage protection threshold
• Peak Pulse Current (8/20µs): Both rated at 400A, maintaining equivalent surge suppression capability
• Peak Pulse Current (10/1000µs): Both rated at 100A, ensuring consistent performance under extended pulse conditions
• Hold Current (Ih): Both rated at 150mA, providing identical latching characteristics
• Package / Case: Both use DO-214AA (SMB) surface mount format, enabling direct PCB footprint compatibility
• Number of Elements: Both single-element devices with identical functional architecture
• Compliance Status: Both RoHS3 compliant with REACH unaffected designation and EAR99 export classification

Minor variations in breakover voltage (180V vs. 175V) and capacitance (95pF vs. 65pF) remain within acceptable tolerance ranges for TVS thyristor applications and do not preclude substitution.

Parameter Comparison

Engineering Selection Recommendations

Both the P1500SCLRP and SMP100LC-140 are active production devices with identical RoHS3 compliance, REACH unaffected status, and EAR99 export classification. Selection between these parts should be based on:

• Supply Availability: Choose based on current inventory and lead time from authorized distributors
• Packaging Format: P1500SCLRP is supplied in Tape & Reel (TR) format; SMP100LC-140 is available in Cut Tape (CT) and Digi-Reel® formats. Select according to procurement volume and assembly line requirements
• Electrical Performance: Both devices meet the 140V off-state, 400A peak pulse current, and 150mA hold current specifications required for equivalent circuit protection
• Regulatory Compliance: Both parts satisfy identical compliance requirements for industrial and commercial applications

Frequently Asked Questions (FAQ)

Q: Can the SMP100LC-140 directly replace the P1500SCLRP on existing PCBs?

A: Yes. Both devices use the DO-214AA (SMB) surface mount package with identical pinout and footprint geometry, enabling direct PCB substitution without layout modifications.

Q: What is the significance of the 5V difference in breakover voltage (180V vs. 175V)?

A: The breakover voltage difference of 5V represents approximately 2.8% variation. Both values fall within the acceptable tolerance range for TVS thyristor applications and do not affect circuit protection performance when properly designed for the 140V off-state rating.

Q: How does the capacitance difference (95pF vs. 65pF) impact circuit performance?

A: The 30pF capacitance difference may affect high-frequency circuit behavior. In applications sensitive to parasitic capacitance, verify that the lower capacitance of the SMP100LC-140 (65pF) is compatible with circuit impedance and signal integrity requirements.

Q: Are there packaging considerations when switching between these parts?

A: Yes. The P1500SCLRP is supplied in Tape & Reel format suitable for high-volume automated assembly. The SMP100LC-140 is available in Cut Tape and Digi-Reel® formats, which may be preferred for lower-volume production or manual assembly operations. Confirm packaging compatibility with your procurement and assembly processes.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the P1500SCLRP and SMP100LC-140 are RoHS3 compliant, REACH unaffected, and classified as EAR99 for export purposes. They meet identical regulatory requirements for industrial and commercial applications.

Q: What is the hold current specification and why is it important?

A: The hold current (Ih) of 150mA is the minimum current required to maintain the thyristor in the on-state after triggering. Both devices share this specification, ensuring identical latching behavior and circuit stability during transient suppression events.