P2000SB Equivalent & Substitute Parts

Part Overview

The P2000SB is a Transient Voltage Suppressor (TVS) thyristor manufactured by Littelfuse Inc., designed for overvoltage protection in surface mount applications. This component features a 180V off-state voltage rating with 250A peak pulse current capability in a DO-214AA (SMB) package. The P2000SB is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and procurement.

Substiute Parts

P2000SB

Littelfuse Inc.In Stock: 1065P2000SB Datasheet

Current PartRFQ

P2000SBLRP

Littelfuse Inc.In Stock: 3001P2000SBLRP Datasheet

DirectRFQ

SMTPA180

STMicroelectronicsIn Stock: 3882SMTPA180 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P2000SB is determined by matching the following critical electrical and mechanical parameters:

• Voltage - Off State: 180V (primary rating)
• Voltage - Breakover: 220V–240V (acceptable range)
• Package / Case: DO-214AA, SMB (mechanical compatibility)
• Mounting Type: Surface Mount (assembly compatibility)
• Number of Elements: 1 (functional equivalence)

Two substitute parts meet these criteria:

P2000SBLRP (Littelfuse Inc.) — Direct manufacturer equivalent with identical electrical specifications, differentiated only by packaging format (Tape & Reel) and active product status.

SMTPA180 (STMicroelectronics) — Manufacturer-recommended substitute with matching off-state voltage and package, with variations in peak pulse current ratings and hold current.

Parameter Comparison

Engineering Selection Recommendations

P2000SBLRP is the direct functional equivalent of P2000SB. Both parts share identical electrical specifications and are manufactured by Littelfuse Inc. The primary distinction is packaging format: P2000SBLRP is supplied in Tape & Reel format and maintains active product status. P2000SBLRP is ROHS3 compliant, whereas P2000SB is non-compliant. For applications requiring exact electrical performance matching, P2000SBLRP is the preferred substitute.

SMTPA180 is a manufacturer-recommended alternative from STMicroelectronics. This part maintains the 180V off-state voltage and DO-214AA package compatibility. However, peak pulse current ratings are reduced (150A vs. 250A at 8/20µs; 50A vs. 80A at 10/1000µs), and hold current is increased (150mA vs. 120mA). Capacitance is significantly lower (25pF vs. 95pF). SMTPA180 is suitable for applications where the lower current ratings and reduced capacitance are acceptable within circuit design margins. Both substitute parts are ROHS3 compliant and REACH unaffected.

Frequently Asked Questions (FAQ)

Q: Can P2000SBLRP be used as a direct replacement for P2000SB?

A: Yes. P2000SBLRP is electrically and mechanically identical to P2000SB. Both parts have 180V off-state voltage, 220V breakover voltage, 250A peak pulse current (8/20µs), and identical on-state voltage and hold current specifications. The only differences are packaging format (Tape & Reel vs. bulk) and product status (Active vs. Obsolete). P2000SBLRP is the recommended substitute for new procurement.

Q: What are the key differences between P2000SBLRP and SMTPA180?

A: Both parts share the 180V off-state voltage and DO-214AA package. SMTPA180 has a higher breakover voltage (240V vs. 220V), lower peak pulse current ratings (150A vs. 250A at 8/20µs), higher hold current (150mA vs. 120mA), and significantly lower capacitance (25pF vs. 95pF). These differences may affect circuit performance in applications sensitive to current handling or capacitive loading.

Q: Are all substitute parts RoHS compliant?

A: P2000SBLRP and SMTPA180 are both ROHS3 compliant. The original P2000SB is non-compliant. For applications requiring RoHS compliance, either substitute part is acceptable.

Q: Can SMTPA180 be used in all applications where P2000SB is specified?

A: SMTPA180 can be used only if the application circuit tolerates the reduced peak pulse current ratings (150A vs. 250A) and lower capacitance (25pF vs. 95pF). Circuit analysis is required to confirm compatibility with these parameter variations.

Q: What packaging formats are available for these parts?

A: P2000SB is supplied in bulk packaging. P2000SBLRP is supplied in Tape & Reel format. SMTPA180 is available in Cut Tape and Digi-Reel formats. All three parts use the DO-214AA (SMB) surface mount package.