P1300SB Equivalent & Substitute Parts

Part Overview

The P1300SB is a 120V off-state TVS thyristor manufactured by Littelfuse Inc. in the DO-214AA (SMB) package. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The P1300SB operates with a 160V breakover voltage and handles peak pulse currents of 250A (8/20µs), providing transient voltage suppression in surface-mount applications.

Substiute Parts

P1300SB

Littelfuse Inc.In Stock: 10149P1300SB Datasheet

Current PartRFQ

P1300SBLRP

LittelfuseIn Stock: 2638P1300SBLRP Datasheet

DirectRFQ

SMTPA120

STMicroelectronicsIn Stock: 10386SMTPA120 Datasheet

MFR RecommendedRFQ

SMTPA130

STMicroelectronicsIn Stock: 3893SMTPA130 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P1300SB is determined by the following critical parameters: off-state voltage (120V), breakover voltage (160V), on-state voltage (4V), peak pulse current capability, hold current (150mA), package type (DO-214AA/SMB), and mounting configuration (surface mount).

The substitute parts are grouped into two categories:

Direct Littelfuse Equivalent: P1300SBLRP maintains identical electrical specifications to the P1300SB with the same 120V off-state voltage, 160V breakover voltage, and 250A peak pulse current (8/20µs). The primary difference is packaging format (Tape & Reel) and active product status.

Cross-Manufacturer Alternatives: SMTPA120 and SMTPA130 from STMicroelectronics provide functional substitution with compatible package and mounting specifications. These parts maintain the 150mA hold current requirement and DO-214AA/SMB package compatibility but operate at reduced peak pulse current levels (150A at 8/20µs).

Parameter Comparison

Engineering Selection Recommendations

P1300SBLRP is the primary direct equivalent for P1300SB replacement. This part maintains identical electrical performance with 250A peak pulse current capability and 120V off-state voltage. P1300SBLRP is active in production and ROHS3 compliant, addressing obsolescence and regulatory requirements of the original P1300SB.

SMTPA120 provides cross-manufacturer substitution when P1300SBLRP availability is constrained. This STMicroelectronics part maintains 120V off-state voltage and 160V breakover voltage with compatible DO-214AA/SMB packaging. Peak pulse current is reduced to 150A (8/20µs), requiring circuit-level evaluation for applications demanding the full 250A capability of the original part.

SMTPA130 is suitable for applications where higher off-state voltage (130V) and breakover voltage (173V) are acceptable. This part operates at 150A peak pulse current (8/20µs) and maintains the 150mA hold current specification. Selection of SMTPA130 requires confirmation that the elevated voltage ratings do not conflict with circuit design parameters.

All substitute parts are ROHS3 compliant and maintain unlimited moisture sensitivity level (MSL 1), ensuring compatibility with standard manufacturing and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can P1300SBLRP directly replace P1300SB in existing designs? A: Yes. P1300SBLRP maintains identical electrical specifications including 120V off-state voltage, 160V breakover voltage, 250A peak pulse current (8/20µs), and 4V on-state voltage. Both use DO-214AA/SMB packaging and surface-mount configuration. The primary difference is packaging format (Tape & Reel for P1300SBLRP) and active product status.

Q: What is the impact of using SMTPA120 instead of P1300SB? A: SMTPA120 reduces peak pulse current capability from 250A to 150A (8/20µs). Off-state voltage (120V), breakover voltage (160V), hold current (150mA), and package type (DO-214AA/SMB) remain compatible. Circuit designs must verify that 150A peak pulse current is sufficient for transient suppression requirements.

Q: Are there voltage rating differences between substitute parts? A: Yes. P1300SB and P1300SBLRP operate at 120V off-state with 160V breakover. SMTPA120 matches these ratings. SMTPA130 operates at 130V off-state with 173V breakover, requiring design verification that higher voltage ratings do not introduce compatibility issues.

Q: Do all substitute parts meet RoHS compliance? A: P1300SB is RoHS non-compliant. P1300SBLRP, SMTPA120, and SMTPA130 are all ROHS3 compliant, meeting current regulatory requirements for new production and procurement.

Q: Is packaging format interchangeable between P1300SB and P1300SBLRP? A: Both parts use DO-214AA/SMB package and surface-mount configuration. P1300SB is supplied in standard packaging while P1300SBLRP is supplied in Tape & Reel format. Electrical and mechanical compatibility is maintained; supply chain and assembly process considerations may differ.