TISP4290M3LM Equivalent & Substitute Parts

Part Overview

The TISP4290M3LM is a 220V transient voltage suppressor thyristor manufactured by Bourns Inc., designed for overvoltage protection in through-hole applications. This component features a 220V off-state voltage rating and 220A peak pulse current capability in an 8/20µs waveform. The part is currently obsolete, making equivalent substitutes necessary for new designs and ongoing system maintenance where this protection topology is required.

Substiute Parts

TISP4290M3LM

Bourns Inc.In Stock: 789TISP4290M3LM Datasheet

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P2600EAL

Littelfuse Inc.In Stock: 2353P2600EAL Datasheet

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P2600EBL

Littelfuse Inc.In Stock: 3452P2600EBL Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the TISP4290M3LM is determined by the following critical electrical and mechanical parameters:

• Voltage Rating Match: Off-state voltage of 220V and breakover voltage within acceptable tolerance
• Current Handling: Peak pulse current capability (8/20µs) must meet or exceed application requirements
• Package Compatibility: TO-226-2 or TO-92-2 (TO-226AC) through-hole mounting
• Hold Current: Minimum 150mA to maintain thyristor latching behavior
• Single Element Configuration: One active element per package

The substitute parts P2600EAL and P2600EBL from Littelfuse Inc. meet these criteria with identical voltage ratings and package specifications. Both are active products with modern compliance certifications, addressing the obsolescence of the original TISP4290M3LM.

Parameter Comparison

Engineering Selection Recommendations

P2600EBL is the primary substitute for TISP4290M3LM applications. This part maintains identical voltage specifications (220V off-state, 300V breakover) and package configuration while providing 250A peak pulse current capability, which exceeds the original 220A rating. The P2600EBL is an active product with ROHS3 compliance and current manufacturing support, ensuring long-term availability and regulatory alignment.

P2600EAL serves as an alternative where peak pulse current requirements are lower. With 150A capability, this part is suitable for applications with reduced transient energy levels. Both Littelfuse substitutes feature improved on-state voltage (4V versus 3V) and lower capacitance values, which may affect circuit timing characteristics in sensitive applications.

The transition from the obsolete TISP4290M3LM to either active Littelfuse equivalent eliminates supply chain risk and ensures compliance with current environmental regulations.

Frequently Asked Questions (FAQ)

Q: Can P2600EAL directly replace TISP4290M3LM in all applications?

A: P2600EAL is mechanically and electrically compatible for applications where peak pulse current does not exceed 150A. The original TISP4290M3LM rated 220A, so applications requiring this full current capacity must use P2600EBL instead.

Q: What is the difference between P2600EAL and P2600EBL?

A: Both parts share identical voltage ratings (220V off-state, 300V breakover) and package specifications. The primary difference is peak pulse current: P2600EAL handles 150A while P2600EBL handles 250A. Selection depends on the maximum transient current expected in the application.

Q: Are the TO-226-2 and TO-92-2 packages interchangeable?

A: Yes. All three parts (TISP4290M3LM, P2600EAL, P2600EBL) are available in both TO-226-2 and TO-92-2 (TO-226AC) configurations. These are equivalent through-hole packages with identical pin spacing and mounting requirements.

Q: How do the on-state voltage differences affect circuit performance?

A: The original TISP4290M3LM specifies 3V on-state, while both Littelfuse substitutes specify 4V. This 1V difference represents increased voltage drop during transient suppression. For most protection applications, this variance is within acceptable limits, but circuits with tight voltage margin specifications should evaluate the impact.

Q: What compliance advantages do the Littelfuse substitutes offer?

A: Both P2600EAL and P2600EBL are ROHS3 compliant, whereas the TISP4290M3LM is non-compliant. This compliance status is essential for products destined for markets with environmental regulations. Both substitutes also maintain REACH Unaffected status and identical ECCN and HTSUS classifications.

Q: Is inventory availability a consideration for selection?

A: Yes. P2600EBL has 3400 units in stock, while P2600EAL has 2300 units. Both exceed typical component availability for active products. The original TISP4290M3LM, though listed as 771 units in stock, is obsolete and represents depleting inventory.