TISP4145M3BJR Equivalent & Substitute Parts

Part Overview

The TISP4145M3BJR is a 120V off-state transient voltage suppressor thyristor manufactured by Bourns Inc., housed in a DO-214AA (SMB) surface mount package. This component is designed for transient overvoltage protection applications requiring 220A peak pulse current capability at 8/20µs pulse width. The part is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

TISP4145M3BJR

Bourns Inc.In Stock: 6140TISP4145M3BJR Datasheet

Current PartRFQ

TISP4145M3BJR-S

Bourns Inc.In Stock: 12591TISP4145M3BJR-S Datasheet

DirectRFQ

P1300SBLRP

LittelfuseIn Stock: 2638P1300SBLRP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TISP4145M3BJR is determined by the following critical parameters:

Primary Matching Criteria:

• Off-state voltage: 120V
• Package type: DO-214AA (SMB) surface mount
• Mounting compatibility: Surface mount

Secondary Performance Criteria:

• Peak pulse current (8/20µs): minimum 220A
• On-state voltage: ≤3V
• Hold current (Ih): 150mA

Two substitute parts meet these requirements with documented electrical compatibility:

TISP4145M3BJR-S (Bourns Inc.): Identical electrical specifications with tape & reel packaging. Active product status with RoHS3 compliance.

P1300SBLRP (Littelfuse): Functionally equivalent with enhanced current ratings (250A peak pulse at 8/20µs). Breakover voltage is 160V and on-state voltage is 4V, representing acceptable parameter variance within the 120V off-state class. Active product status with RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

TISP4145M3BJR-S is the direct replacement for TISP4145M3BJR. It provides identical electrical performance with the advantage of active product status and RoHS3 compliance. This substitute is recommended for applications requiring exact parameter matching and continued Bourns supply chain support.

P1300SBLRP (Littelfuse SIDACtor®) is a functionally equivalent alternative with enhanced current handling capability. The 160V breakover voltage and 4V on-state voltage represent acceptable parameter variance for 120V off-state thyristor applications. This substitute provides higher peak pulse current ratings (250A at 8/20µs and 80A at 10/1000µs), offering improved transient suppression margin. Selection of P1300SBLRP is appropriate for applications where enhanced current capacity provides design benefit and the slightly elevated breakover and on-state voltages are acceptable within system specifications.

Both substitutes maintain identical hold current (150mA), capacitance characteristics within 2pF variance, and DO-214AA package compatibility. Both are RoHS3 compliant and available in tape & reel packaging for automated assembly.

Frequently Asked Questions (FAQ)

Q: Can TISP4145M3BJR-S be used as a direct drop-in replacement for TISP4145M3BJR?

A: Yes. TISP4145M3BJR-S provides identical electrical specifications across all critical parameters: 120V off-state voltage, 145V breakover voltage, 3V on-state voltage, 220A peak pulse current (8/20µs), and 150mA hold current. The only difference is packaging format (tape & reel versus bulk) and product status (active versus obsolete). PCB footprint and mounting requirements are identical.

Q: What are the key differences between TISP4145M3BJR and P1300SBLRP?

A: Both devices share the same 120V off-state voltage and DO-214AA package. P1300SBLRP has a higher breakover voltage (160V versus 145V), slightly elevated on-state voltage (4V versus 3V), and enhanced peak pulse current ratings (250A versus 220A at 8/20µs). These differences represent acceptable variance within the 120V suppressor class and do not prevent functional substitution in most applications.

Q: Are there packaging considerations when substituting these parts?

A: TISP4145M3BJR was supplied in bulk packaging. Both substitutes (TISP4145M3BJR-S and P1300SBLRP) are supplied in tape & reel format, which is standard for automated assembly. No PCB footprint changes are required, as all three parts use the identical DO-214AA (SMB) surface mount package.

Q: Do the substitute parts meet current environmental compliance standards?

A: Yes. Both TISP4145M3BJR-S and P1300SBLRP are RoHS3 compliant. The original TISP4145M3BJR is RoHS non-compliant. For applications requiring RoHS compliance, either substitute is appropriate.

Q: What is the inventory status of these substitute parts?

A: TISP4145M3BJR-S has 12,541 pieces in stock. P1300SBLRP has 2,600 pieces in stock. Both are active products with ongoing manufacturer support.