TISP7220H3SL Equivalent & Substitute Parts

Part Overview

The TISP7220H3SL is a 170V off-state, 350A peak pulse (8/20µs) transient voltage suppressor thyristor manufactured by Bourns Inc. in a 3-SIP through-hole package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations. The part operates with a 220V breakover voltage and 5V on-state voltage, designed for transient suppression applications requiring high peak current handling in a compact radial configuration.

Substiute Parts

TISP7220H3SL

Bourns Inc.In Stock: 1003TISP7220H3SL Datasheet

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P2103ACL

Littelfuse Inc.In Stock: 5485P2103ACL Datasheet

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P2103ACLRP

Littelfuse Inc.In Stock: 1144P2103ACLRP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TISP7220H3SL is determined by the following critical electrical and mechanical parameters:

• Off-State Voltage (170V): Must match exactly to maintain circuit protection threshold
• Peak Pulse Current (8/20µs): Minimum 350A required; higher ratings are acceptable
• Peak Pulse Current (10/1000µs): Must be 100A or greater
• Hold Current (Ih): Must be 150mA or greater
• Number of Elements: Must be 3 for pin compatibility
• Mounting Type: Through-hole configuration required
• Package Configuration: 3-SIP or compatible modified package acceptable

The substitute parts P2103ACL and P2103ACLRP (Littelfuse Inc., SIDACtor® series) meet these criteria with equivalent off-state voltage (170V), higher peak pulse current capability (400A at 8/20µs), matching hold current (150mA), and compatible three-element configuration. Both parts are active products with current manufacturing status and RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

Both P2103ACL and P2103ACLRP provide functional equivalence to the obsolete TISP7220H3SL with the following considerations:

P2103ACL (Bulk Packaging): Suitable for applications requiring standard component procurement with active product status and RoHS3 compliance. Peak pulse current capability (400A) exceeds the original specification (350A), providing margin for transient suppression performance.

P2103ACLRP (Tape & Reel Packaging): Identical electrical specifications to P2103ACL with tape and reel packaging for automated assembly processes. Recommended for high-volume production environments.

Both substitutes operate at a higher breakover voltage (250V vs. 220V) and on-state voltage (8V vs. 5V) compared to the original part. These differences must be evaluated within the specific circuit application to confirm compatibility with system protection requirements and voltage thresholds.

Frequently Asked Questions (FAQ)

Q: Can P2103ACL or P2103ACLRP directly replace TISP7220H3SL in existing designs?

A: Both parts meet the critical electrical parameters (170V off-state voltage, 150mA hold current, 100A minimum peak pulse current at 10/1000µs, and three-element configuration). However, the higher breakover voltage (250V vs. 220V) and on-state voltage (8V vs. 5V) require circuit-level verification to confirm compatibility with system protection thresholds and trigger conditions.

Q: What is the difference between P2103ACL and P2103ACLRP?

A: Both parts are electrically identical. The primary difference is packaging: P2103ACL is supplied in bulk format, while P2103ACLRP is supplied in tape and reel format for automated assembly. Selection depends on procurement and manufacturing process requirements.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both P2103ACL and P2103ACLRP are RoHS3 compliant, whereas the original TISP7220H3SL is RoHS non-compliant. This compliance status may be relevant for applications subject to RoHS regulatory requirements.

Q: How do the capacitance values compare?

A: The original TISP7220H3SL specifies 74pF capacitance. The substitute parts specify 55pF or 85pF. Capacitance differences may affect high-frequency transient response characteristics and should be evaluated in applications sensitive to parasitic capacitance effects.

Q: Is the package change from 3-SIP to TO-220 Modified significant?

A: Both packages are through-hole configurations with three leads. The TO-220 Modified package used by the substitute parts maintains mechanical and electrical compatibility for standard PCB layouts. Physical dimensions should be verified for space-constrained applications.