Littelfuse P2600SC Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The Littelfuse P2600SC is a 220V off-state TVS thyristor in DO-214AA (SMB) surface mount package, rated for 400A peak pulse current (8/20µs). This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across voltage ratings, current handling capacity, and mechanical packaging specifications.

Substiute Parts

P2600SC

Littelfuse Inc.In Stock: 10242P2600SC Datasheet

Current PartRFQ

P2600SCLRP

Littelfuse Inc.In Stock: 7793P2600SCLRP Datasheet

DirectRFQ

SMP100LC-230

STMicroelectronicsIn Stock: 187787SMP100LC-230 Datasheet

MFR RecommendedRFQ

SMTPA220

STMicroelectronicsIn Stock: 3747SMTPA220 Datasheet

MFR RecommendedRFQ

TISP4290T3BJR-S

Bourns Inc.In Stock: 933TISP4290T3BJR-S Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P2600SC is determined by the following criteria:

Primary Compatibility Parameters:

• Voltage - Off State: 220V ±10V tolerance range
• Package / Case: DO-214AA, SMB (identical mechanical and electrical interface)
• Mounting Type: Surface Mount
• Number of Elements: 1

Secondary Compatibility Parameters:

• Current - Peak Pulse (8/20µs): 150A minimum (lower current ratings acceptable for reduced stress applications)
• Current - Hold (Ih): 150mA (standard across all candidates)
• Voltage - Breakover: 285V–300V range

Substitute parts are grouped into two categories: direct equivalents (identical off-state voltage and peak current) and functional alternatives (matching off-state voltage with reduced peak current ratings).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Preferred for Drop-In Replacement):

P2600SCLRP (Littelfuse Inc.) is the direct equivalent of the obsolete P2600SC. Both parts share identical electrical specifications: 220V off-state voltage, 300V breakover voltage, 400A peak pulse current (8/20µs), and 80pF capacitance. The primary distinction is product status: P2600SCLRP is active and ROHS3 compliant, whereas P2600SC is obsolete and non-compliant. P2600SCLRP is supplied in Tape & Reel packaging, suitable for automated assembly processes.

Functional Alternatives (Reduced Current Rating):

SMP100LC-230 (STMicroelectronics) provides 400A peak pulse current with 230V off-state voltage (10V higher than P2600SC). This part is suitable for applications where the slightly elevated voltage threshold is acceptable. TISP4290T3BJR-S (Bourns Inc.) offers 250A peak pulse current at 220V off-state voltage, appropriate for lower-stress transient suppression scenarios. Both alternatives are ROHS3 compliant and active products.

Lower Current Alternative:

SMTPA220 (STMicroelectronics) operates at 220V off-state voltage with 150A peak pulse current. This part is suitable only for applications with reduced transient energy requirements and is not recommended as a direct replacement for 400A-rated designs.

All substitute parts maintain DO-214AA (SMB) packaging compatibility and 150mA hold current specifications. Selection should be based on application transient energy levels and regulatory compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can P2600SCLRP directly replace the obsolete P2600SC?

A: Yes. P2600SCLRP is the direct equivalent with identical electrical specifications (220V off-state, 300V breakover, 400A peak pulse current, 80pF capacitance) and DO-214AA packaging. The primary difference is active product status and ROHS3 compliance.

Q: What is the difference between P2600SC and SMP100LC-230?

A: SMP100LC-230 has a 230V off-state voltage compared to P2600SC's 220V. Both support 400A peak pulse current and DO-214AA packaging. The 10V voltage difference may affect circuit triggering thresholds in sensitive applications.

Q: Is SMTPA220 suitable as a replacement for P2600SC?

A: SMTPA220 is not recommended as a direct replacement. While it maintains 220V off-state voltage and DO-214AA packaging, its 150A peak pulse current rating is significantly lower than P2600SC's 400A rating. Use only in applications with reduced transient energy requirements.

Q: Why does TISP4290T3BJR-S have lower peak current than P2600SC?

A: TISP4290T3BJR-S is rated for 250A peak pulse current (8/20µs) versus P2600SC's 400A. This part is suitable for moderate transient suppression applications. Selection depends on actual circuit transient energy levels.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. P2600SCLRP, SMP100LC-230, SMTPA220, and TISP4290T3BJR-S are all ROHS3 compliant. The original P2600SC is non-compliant.

Q: Do all substitute parts use the same DO-214AA package?

A: Yes. All substitute parts use DO-214AA (SMB) surface mount packaging, ensuring mechanical and electrical interface compatibility with P2600SC footprints.

Q: What is the significance of capacitance differences among substitute parts?

A: Capacitance values range from 25pF (SMTPA220) to 80pF (P2600SC and P2600SCLRP). Lower capacitance may reduce parasitic effects in high-frequency circuits but does not affect primary transient suppression function. Selection should consider circuit impedance and frequency characteristics.