P0300SAMC Equivalent & Substitute Parts

Part Overview

The P0300SAMC is a 25V off-state, 150A peak pulse (8/20µs) TVS thyristor manufactured by Littelfuse Inc. in the SIDACtor® series, housed in a DO-214AA (SMB) surface mount package. This part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across voltage ratings, current handling capabilities, and mechanical packaging to ensure direct replacement functionality.

Substiute Parts

P0300SAMC

Littelfuse Inc.In Stock: 1368P0300SAMC Datasheet

Current PartRFQ

P0300SAMCLRP

Littelfuse Inc.In Stock: 1348P0300SAMCLRP 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 logic for the P0300SAMC is based on the following critical parameters:

Primary Compatibility Criteria:

• Voltage - Off State: 25V (exact match required)
• Package / Case: DO-214AA, SMB (mechanical and electrical interface requirement)
• Mounting Type: Surface Mount (assembly compatibility)
• Number of Elements: 1 (functional equivalence)

Secondary Compatibility Criteria:

• Voltage - Breakover: 40V nominal (acceptable within standard TVS thyristor tolerances)
• Current - Peak Pulse (8/20µs): 150A minimum (equal or higher rating acceptable for transient suppression)
• Current - Hold (Ih): 50mA nominal (acceptable within standard operating range)

Substitute parts are grouped into two categories:

Category 1 - Direct Equivalent (Identical Electrical Ratings): P0300SAMCLRP maintains identical electrical specifications to the main part with the primary difference being packaging format (Tape & Reel vs. bulk) and active product status.

Category 2 - Enhanced Substitutes (Higher Current Rating): SMP100LC-25 and TISP4040H1BJR-S both feature 25V off-state voltage and DO-214AA packaging but provide higher peak pulse current ratings (400A vs. 150A). These parts are suitable for applications requiring equal or greater transient suppression capability.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): P0300SAMCLRP is the primary substitute for P0300SAMC. Both parts are manufactured by Littelfuse Inc. and maintain identical electrical parameters. P0300SAMCLRP is active in production status and ROHS3 compliant, addressing the obsolescence and compliance limitations of the original part. The only functional difference is packaging format (Tape & Reel vs. bulk inventory).

For Enhanced Transient Suppression: SMP100LC-25 (STMicroelectronics) and TISP4040H1BJR-S (Bourns Inc.) are suitable substitutes when higher peak pulse current handling is required. Both parts maintain the 25V off-state voltage and DO-214AA package compatibility. SMP100LC-25 provides 400A peak pulse current with 65pF capacitance. TISP4040H1BJR-S provides 400A peak pulse current with 61pF capacitance and 50mA hold current matching the original specification. Both parts are ROHS3 compliant and active in production.

Compliance Considerations: All substitute parts are ROHS3 compliant, addressing the non-compliant status of the obsolete P0300SAMC. Moisture sensitivity level remains constant across all options at MSL 1 (Unlimited).

Frequently Asked Questions (FAQ)

Q: Can P0300SAMCLRP be used as a direct replacement for P0300SAMC? A: Yes. P0300SAMCLRP maintains identical electrical specifications including 25V off-state voltage, 40V breakover voltage, 150A peak pulse current (8/20µs), and 50mA hold current. Both are housed in DO-214AA (SMB) surface mount packages. The primary difference is packaging format and active product status.

Q: What is the difference between the 150A and 400A rated substitutes? A: SMP100LC-25 and TISP4040H1BJR-S are rated for 400A peak pulse current (8/20µs) compared to the P0300SAMC's 150A rating. These parts provide enhanced transient suppression capability while maintaining the same 25V off-state voltage and DO-214AA package. They are suitable for applications requiring higher current handling.

Q: Are all substitute parts ROHS3 compliant? A: Yes. P0300SAMCLRP, SMP100LC-25, and TISP4040H1BJR-S are all ROHS3 compliant. The original P0300SAMC is non-compliant, making substitution necessary for applications with RoHS requirements.

Q: Do the substitute parts fit the same PCB footprint? A: Yes. All substitute parts use the DO-214AA (SMB) package with surface mount configuration, maintaining mechanical compatibility with existing PCB designs for the P0300SAMC.

Q: What is the difference in capacitance between substitute options? A: P0300SAMC and P0300SAMCLRP both have 35pF capacitance. SMP100LC-25 has 65pF capacitance, and TISP4040H1BJR-S has 61pF capacitance. Higher capacitance values in the enhanced substitutes correlate with their higher current ratings.

Q: Can SMP100LC-25 or TISP4040H1BJR-S be used in applications designed for the 150A rated P0300SAMC? A: Yes. Both parts maintain the 25V off-state voltage and DO-214AA package compatibility. The higher 400A peak pulse current rating provides equal or greater transient suppression capability for the same voltage class.