TISP4080M3LM Equivalent & Substitute Parts

Part Overview

The TISP4080M3LM is a 65V off-state, 220A peak pulse (8/20µs) TVS thyristor manufactured by Bourns Inc. in TO-226-2 package configuration. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates as a transient voltage suppressor with a breakover voltage of 80V and on-state voltage of 3V, designed for through-hole mounting applications.

Substiute Parts

TISP4080M3LM

Bourns Inc.In Stock: 1012TISP4080M3LM Datasheet

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P0720EAL

Littelfuse Inc.In Stock: 20300P0720EAL Datasheet

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P0720EBL

Littelfuse Inc.In Stock: 5441P0720EBL Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the TISP4080M3LM is determined by the following critical parameters: off-state voltage (65V), package type (TO-226-2/TO-92-2), mounting configuration (through-hole), and functional equivalence as a single-element TVS thyristor. The substitute parts identified—P0720EAL and P0720EBL from Littelfuse Inc.—maintain the same 65V off-state voltage and identical package specifications. Both substitutes are active products with current manufacturing status and improved compliance certifications compared to the obsolete TISP4080M3LM.

Substitution logic is based on:

• Identical off-state voltage (65V)
• Compatible package and case designation (TO-226-2, TO-92-2)
• Through-hole mounting compatibility
• Single-element thyristor configuration
• Breakover voltage within acceptable operating range (88V for substitutes vs. 80V for main part)

Parameter Comparison

Engineering Selection Recommendations

Selection between P0720EAL and P0720EBL depends on application current requirements:

P0720EAL provides 150A peak pulse (8/20µs) current handling. This substitute is suitable for applications where the original 220A specification exceeds actual circuit requirements or where lower current capacity is acceptable within design margins.

P0720EBL provides 250A peak pulse (8/20µs) current handling, exceeding the original TISP4080M3LM specification of 220A. This substitute is appropriate for applications requiring equal or greater transient current suppression capability.

Both Littelfuse substitutes offer ROHS3 compliance, addressing regulatory requirements not met by the obsolete Bourns component. Both maintain identical 65V off-state voltage, 150mA hold current, and compatible TO-226-2/TO-92-2 package specifications. The 8V increase in breakover voltage (88V vs. 80V) represents a minor operational difference within typical circuit design tolerances for TVS thyristor applications.

Frequently Asked Questions (FAQ)

Q: Can P0720EAL or P0720EBL be used as direct pin-for-pin replacements for TISP4080M3LM?

A: Yes. Both substitutes share identical TO-226-2 and TO-92-2 package designations and through-hole mounting configuration, enabling direct PCB replacement without layout modifications.

Q: What is the significance of the 8V difference in breakover voltage (80V vs. 88V)?

A: The breakover voltage determines the threshold at which the TVS thyristor transitions to its on-state. The 8V increase in the Littelfuse substitutes represents a minor shift in trigger point. Circuit design must verify this difference does not affect transient suppression performance in the specific application.

Q: Which substitute should be selected if the application requires 220A peak pulse current handling?

A: P0720EBL, with 250A peak pulse (8/20µs) capability, meets or exceeds the original 220A specification. P0720EAL, rated at 150A, does not meet this requirement.

Q: Are there compliance or regulatory advantages to using the Littelfuse substitutes?

A: Yes. Both P0720EAL and P0720EBL are ROHS3 compliant, whereas the TISP4080M3LM is RoHS non-compliant. Both substitutes are active products with current manufacturing support, addressing supply chain continuity concerns associated with the obsolete Bourns component.

Q: How do the capacitance values differ, and does this affect substitution suitability?

A: The TISP4080M3LM has 120pF capacitance, while P0720EAL has 60pF and P0720EBL has 75pF. Capacitance affects high-frequency transient response. Circuit design must confirm that the lower capacitance values of the substitutes do not degrade transient suppression performance in the target application.

Q: What is the difference between the 8/20µs and 10/1000µs current ratings?

A: These represent different transient pulse waveforms used in testing. The 8/20µs rating applies to fast transients, while 10/1000µs applies to slower transients. Both ratings are provided for complete transient suppression characterization across different surge scenarios.