P0300SCRP Equivalent & Substitute Parts

Part Overview

The P0300SCRP is a 25V off-state, 400A peak pulse TVS thyristor manufactured by Littelfuse Inc. in the DO-214AA (SMB) package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part belongs to the SIDACtor® series of transient voltage suppressors and is designed for surface mount applications requiring high-current transient protection.

Substiute Parts

P0300SCRP

Littelfuse Inc.In Stock: 3768P0300SCRP Datasheet

Current PartRFQ

P0300SCLRP

Littelfuse Inc.In Stock: 19844P0300SCLRP Datasheet

DirectRFQ

SMP100LC-25

STMicroelectronicsIn Stock: 17976SMP100LC-25 Datasheet

MFR RecommendedRFQ

TISP4040H1BJR-S

Bourns Inc.In Stock: 29309TISP4040H1BJR-S Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of TVS thyristors is determined by electrical parameter compatibility within defined tolerances and mechanical package equivalence. The following parameters establish substitution validity:

• Voltage - Off State: Must match at 25V
• Voltage - Breakover: Acceptable range 35V to 40V
• Current - Peak Pulse (8/20µs): Must match at 400A
• Current - Peak Pulse (10/1000µs): Must match at 100A
• Package / Case: Must be DO-214AA, SMB
• Mounting Type: Must be Surface Mount

Three substitute parts meet these criteria with variations in secondary parameters (on-state voltage, hold current, and capacitance) that remain within acceptable operating ranges for this device category.

Parameter Comparison

Engineering Selection Recommendations

P0300SCLRP is the direct equivalent substitute from Littelfuse Inc., maintaining identical electrical specifications to the obsolete P0300SCRP while offering active product status and ROHS3 compliance. This part is available in Tape & Reel packaging and represents the primary replacement option for existing designs.

TISP4040H1BJR-S from Bourns Inc. provides equivalent electrical performance with matching breakover voltage (40V), on-state voltage (3V versus 4V), and hold current (50mA). This part is ROHS3 compliant and available in Tape & Reel packaging. The lower capacitance (61pF) may be advantageous in applications sensitive to parasitic effects.

SMP100LC-25 from STMicroelectronics meets core electrical requirements with a lower breakover voltage (35V) and elevated hold current (150mA). The significantly reduced capacitance (65pF) distinguishes this option for high-frequency applications. This part is ROHS3 compliant and available in Cut Tape & Digi-Reel® packaging.

All three substitutes are ROHS3 compliant and address the obsolescence of the original part. Selection should be based on specific application requirements regarding breakover voltage tolerance, hold current specifications, and packaging format availability.

Frequently Asked Questions (FAQ)

Q: Can P0300SCLRP directly replace P0300SCRP in existing designs?

A: Yes. P0300SCLRP maintains identical electrical specifications (25V off-state, 40V breakover, 400A peak pulse current, 50mA hold current, 250pF capacitance) and the same DO-214AA package. The primary difference is product status (active versus obsolete) and RoHS compliance.

Q: What is the significance of the breakover voltage difference in SMP100LC-25?

A: SMP100LC-25 has a 35V breakover voltage compared to 40V in the main part. This 5V difference affects the trigger threshold for transient suppression. Applications requiring precise 40V breakover characteristics should use P0300SCLRP or TISP4040H1BJR-S instead.

Q: How does the hold current variation impact substitution?

A: SMP100LC-25 specifies 150mA hold current versus 50mA in the main part and other substitutes. Higher hold current may affect latching behavior in specific circuit topologies. Verify hold current requirements for your application before selecting this part.

Q: Are all substitutes available in the same packaging format?

A: All substitutes use DO-214AA (SMB) surface mount packages. However, packaging options differ: P0300SCLRP is available in Tape & Reel, SMP100LC-25 in Cut Tape & Digi-Reel®, and TISP4040H1BJR-S in Tape & Reel. Confirm packaging availability with your supplier for production requirements.

Q: What is the impact of capacitance differences among substitutes?

A: The main part and P0300SCLRP both specify 250pF capacitance. TISP4040H1BJR-S (61pF) and SMP100LC-25 (65pF) have significantly lower capacitance. Lower capacitance reduces parasitic effects in high-frequency circuits but may affect performance in applications designed around the original 250pF specification.

Q: Are all substitutes RoHS compliant?

A: Yes. P0300SCLRP, SMP100LC-25, and TISP4040H1BJR-S are all ROHS3 compliant. The original P0300SCRP is RoHS non-compliant, making compliance an additional benefit of substitution.