TISP4260M3LM Equivalent & Substitute Parts

Part Overview

The TISP4260M3LM is a 200V off-state thyristor-based transient voltage suppressor manufactured by Bourns Inc., designed for surge protection applications requiring high peak pulse current handling. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement planning. The part operates in the TO-226-2 package configuration and is rated for 220 A peak pulse current at 8/20µs waveform.

Substiute Parts

TISP4260M3LM

Bourns Inc.In Stock: 1008TISP4260M3LM Datasheet

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P2300ECL

Littelfuse Inc.In Stock: 20180P2300ECL Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TISP4260M3LM is determined by the following critical parameters:

• Breakover Voltage (260V): Must match exactly to ensure consistent trigger threshold
• Off-State Voltage (200V nominal): Tolerance range acceptable within ±10V for circuit protection function
• On-State Voltage (3V nominal): Clamping voltage must remain within ±2V to prevent overvoltage stress on protected circuits
• Peak Pulse Current (8/20µs): Minimum 220 A required; higher ratings acceptable for enhanced surge capacity
• Hold Current (150 mA): Must match or be lower to maintain latching stability
• Package Configuration: TO-226-2 or TO-92-2 required for mechanical and thermal compatibility
• Mounting Type: Through-hole configuration mandatory for PCB integration

The P2300ECL from Littelfuse Inc. meets these substitution criteria with compatible electrical characteristics and identical package specifications.

Parameter Comparison

Engineering Selection Recommendations

TISP4260M3LM (Bourns Inc.): Obsolete status. RoHS non-compliant. Not recommended for new designs or long-term procurement.

P2300ECL (Littelfuse Inc.): Active product status. ROHS3 compliant. Recommended as the primary substitute. The P2300ECL provides superior peak pulse current ratings (400 A vs. 220 A at 8/20µs), offering enhanced surge protection margin. Off-state voltage is 10 V lower (190 V vs. 200 V), which remains within acceptable operating tolerance for most circuit protection applications. On-state voltage is 1 V higher (4 V vs. 3 V), a negligible difference for clamping performance. Both components share identical hold current specifications and package configurations, ensuring direct mechanical and thermal compatibility. The P2300ECL's active product status and regulatory compliance make it the suitable choice for component replacement and design continuity.

Frequently Asked Questions (FAQ)

Q: Can the P2300ECL directly replace the TISP4260M3LM in existing designs?

A: Yes. Both components share identical breakover voltage (260 V), hold current (150 mA), and package configuration (TO-226-2, TO-92-2). The P2300ECL's higher peak pulse current ratings and lower off-state voltage provide equivalent or improved protection performance.

Q: What is the significance of the 10 V difference in off-state voltage?

A: The TISP4260M3LM operates at 200 V off-state, while the P2300ECL operates at 190 V off-state. This 10 V difference is within acceptable tolerance for thyristor-based TVS devices and does not compromise circuit protection function. The lower off-state voltage of the P2300ECL may provide slightly faster trigger response in some applications.

Q: Why does the P2300ECL have higher peak pulse current ratings?

A: The P2300ECL is rated for 400 A peak pulse current (8/20µs) compared to the TISP4260M3LM's 220 A rating. This represents enhanced surge handling capacity and provides additional design margin for transient protection. Higher current ratings do not negatively impact circuit compatibility when the original design requirement is 220 A or lower.

Q: Are there package compatibility concerns?

A: No. Both the TISP4260M3LM and P2300ECL use identical TO-226-2 and TO-92-2 package configurations with through-hole mounting. PCB footprints and thermal characteristics are compatible.

Q: What is the impact of the 1 V difference in on-state voltage?

A: The TISP4260M3LM clamps at 3 V on-state, while the P2300ECL clamps at 4 V on-state. This 1 V difference is negligible for most surge protection applications and does not introduce overvoltage risk to protected circuits.

Q: Why is the TISP4260M3LM listed as obsolete?

A: Obsolete status indicates that Bourns Inc. has discontinued manufacturing and support for this component. The P2300ECL from Littelfuse Inc. remains in active production with current regulatory compliance, making it the appropriate long-term alternative.

Q: Does the P2300ECL meet current regulatory requirements?

A: Yes. The P2300ECL is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards. The TISP4260M3LM is RoHS non-compliant, which may restrict its use in regulated applications.