TPN3021 STMicroelectronics Integrated Circuit (Small Outline Packages) In Stock
Delta-connected 3-element transient voltage suppressor array in an SO-8 package for multi-line overvoltage protection. Clamps up to 38 V breakover with a 9 A non-repetitive peak on-state current and 28 V DC off-state voltage. Available from authorized distributors with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- TPN3021 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.9545(MOQ 1)
- Temp Range
- -40.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Delta-connected 3-element configuration protects 3 signal lines simultaneously with a single SO-8 device, reducing BOM count
- 38 V breakover voltage clamps transients on 24 V industrial buses and RS-485/RS-422 communication interfaces
- 9 A non-repetitive peak on-state current handles high-energy transient spikes in industrial and AC-line-adjacent applications
- Compact SO-8 plastic package with RoHS e4 compliant lead-free construction for modern ESD and surge protection circuits
Applications
TPN3021 is designed for protecting multi-line communication interfaces such as RS-485, RS-422, and CAN bus ports in industrial control equipment from electrostatic discharge and line transients. Its delta-connected 3-element topology efficiently suppresses differential and common-mode surges across 3 conductors with a single device. The 28 V DC off-state blocking capability makes it suitable for 24 V industrial fieldbus networks and process control signal lines requiring reliable overvoltage protection.
Specifications
| YTEOL | 0 |
| Breakover Voltage-Max | 38V |
| Configuration | DELTA CONNECTED, 3 ELEMENTS |
| DC Off-state Voltage-Max | 28V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Non-Repetitive Pk On-state Cur | 9A |
| Number of Elements | 3 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Repetitive Peak Reverse Voltage | 28V |
| Surface Mount | YES |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trigger Device Type | SILICON SURGE PROTECTOR |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8541.30.00.80 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TPN3021:
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Frequently Asked Questions
What is the peak surge current capability of TPN3021, and what does that mean for industrial ESD protection?
TPN3021 handles a non-repetitive peak on-state current of 9 A, which is sufficient to absorb high-energy ESD and surge pulses per IEC 61000-4-2 or IEC 61000-4-5 test conditions. This makes it a robust first-stage protection device for 24 V industrial fieldbus and process control signal interfaces.
How does TPN3021's delta-connected 3-element layout protect a 3-wire RS-485 interface more efficiently than using 3 discrete TVS diodes?
By integrating 3 TVS elements in a delta configuration within a single SO-8 footprint, TPN3021 protects all 3 conductors of an RS-485 or RS-422 bus against differential and common-mode transients simultaneously. Using 3 discrete TVS diodes instead would require 3 separate packages, increasing PCB area by roughly 3× and adding board-level placement complexity.
What is the DC off-state voltage of TPN3021, and which bus standards does that voltage rating support?
TPN3021 has a DC off-state voltage of 28 V, meaning it remains non-conducting during normal operation on buses whose steady-state voltage does not exceed 28 V. This covers standard 24 V industrial control buses, 12 V automotive CAN interfaces, and RS-485 differential lines, making it versatile across multiple industrial communication standards.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.4475 | $1.45 |
| 4+ | $1.3317 | $5.33 |
| 20+ | $1.1580 | $23.16 |
| 2000+ | $0.9545 | $1909.08 |
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