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Texas Instruments TVS3301DRBR
- Part No.:
- TVS3301DRBR
- Manufacturer:
- Texas Instruments
- Category:
- Mixed Technology
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
TVS3301DRBR.pdf
- Description:
- TVS DEVICE MIXED 42.5V 8-SON
- Quantity:
- Payment:
- Shipping:
Inventory:5,385
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Product details
Overview
TVS3301DRBR from Texas Instruments is a bidirectional flat-clamp transient voltage suppression device designed for industrial signal line protection. It delivers 40-V clamping at 27-A (8/20-µs), ±33-V standoff, 54-pF capacitance, and survives 5,000+ repetitive 25-A surges - enabling robust protection of analog I/O in PLC modules and sensor interfaces.
For engineers reviewing the TVS3301DRBR datasheet, TVS3301DRBR pinout, TVS3301DRBR application, or TVS3301DRBR equivalent, key selection criteria include IEC 61000-4-5 (1-kV/42-Ω) compliance, bidirectional ±33-V operation, low leakage (2.5-nA typ. @27°C), thermal stability up to 125°C, and SON-8 package integration with floating thermal pad.
Technical Context
The TVS3301DRBR employs an active feedback-controlled FET-based clamp architecture-not passive avalanche diode behavior-enabling flat voltage regulation during transients. Its 35-mΩ dynamic resistance ensures minimal voltage rise under surge current, maintaining clamping within ±1.5 V across temperature (−40°C to 125°C).
This architecture supports bidirectional operation with symmetrical breakdown (34.4–37.5 V at ±1 mA) and integrated IEC 61000-4-2 Level 4 ESD (±8 kV contact) and IEC 61000-4-4 EFT (±80 A) protection - all in a single monolithic SON-8 device without external bias or control circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Clamp Voltage | 40 V at 27-A 8/20-µs surge - limits downstream IC stress below absolute max ratings (e.g., XTR115 input ≤38.34 V) |
| Standoff Voltage | ±33 V - enables bipolar signal handling and reverse-wiring tolerance in 24-V industrial loops |
| Surge Rating | 27 A (8/20 µs), 3 A (10/1000 µs) - meets IEC 61000-4-5 and IEC 61643-321 for industrial signal lines |
| Leakage Current | 2.5 nA typical @27°C, 450 nA max @85°C - minimizes power loss and offset error in precision analog inputs |
| Capacitance | 54 pF @1 MHz - preserves signal integrity in high-speed analog and digital I/O up to ~10 MHz bandwidth |
| ESD Protection | IEC 61000-4-2 Level 4 (±8 kV contact) - eliminates need for discrete ESD diodes in front-end protection |
| Operating Temp | −40°C to +125°C - sustains full surge performance without derating, unlike traditional TVS diodes |
Pinout & Package
TVS3301DRBR uses an 8-pin SON (DRB) package measuring 3.0 mm × 3.0 mm with exposed thermal pad. The thermal pad must remain electrically floating per TI layout guidelines to preserve bidirectional operation and prevent negative-voltage breakdown.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | IN | Surge-protected channel terminals - connected in parallel across protected line (e.g., AI+/AI−) |
| 5, 6, 7, 8 | GND | Ground return path for surge current - requires low-inductance connection to system ground plane |
| Exposed Pad | FLOAT | Thermal pad must be unconnected - grounding it compromises negative-voltage standoff and causes failure |
Key Features
| Feature | Design Value |
|---|---|
| Flat-Clamp Regulation | Active feedback loop maintains <±1.5 V clamping variation over 27-A surge and −40°C to 125°C - enables use of lower-voltage-tolerance downstream ICs |
| Bidirectional Symmetry | Identical ±33-V standoff and ±37.5-V breakdown - protects against miswiring, bipolar signals, and common-mode transients without polarity constraints |
| High-Temp Surge Endurance | Validated for 5,000+ 25-A 8/20-µs surges at 125°C with zero parameter shift - ensures multi-year reliability in harsh industrial environments |
| Low Dynamic Resistance | 35 mΩ - limits voltage overshoot to ≤0.84 V at 24-A surge, keeping protected node within safe operating area |
| Integrated ESD/EFT | Meets IEC 61000-4-2 Level 4 (±8 kV) and IEC 61000-4-4 (±80 A) - reduces BOM count and PCB footprint vs. discrete protection stacks |
Applications
| Industrial Sensor I/O | PLC Analog Input Modules |
|---|---|
|
Use Scenario: Protecting 4–20 mA current-loop sensors in factory automation against lightning-induced surges on field wiring. IC Role / Device Role / Timing Role: Bidirectional transient shunt placed directly at connector entry point to clamp faults before reaching ADC or signal conditioner. Use Value: Maintains ±33-V operating window while limiting clamped voltage to 40 V - prevents damage to 40-V-max XTR115 transmitters and avoids costly over-spec'ed components. |
Use Scenario: Safeguarding analog input channels in programmable logic controller backplanes exposed to 1-kV/42-Ω IEC 61000-4-5 surges. IC Role / Device Role / Timing Role: Primary surge suppressor on each AI channel, coordinated with upstream filtering to meet EN 61000-6-2 immunity requirements. Use Value: Flat clamping enables tighter margin design - downstream op-amps and multiplexers can be rated for 36 V instead of 45 V, reducing cost and power consumption. |
| Analog Input Signal Conditioning | Building Automation Systems |
|
Use Scenario: Shielding precision instrumentation amplifiers (e.g., INA190) in HVAC sensor nodes from ESD and fast transients on thermistor or RTD lines. IC Role / Device Role / Timing Role: Low-capacitance (54 pF), low-leakage (2.5 nA) protector preserving DC accuracy and AC bandwidth of millivolt-level signals. Use Value: Sub-100 µW static power dissipation at ±33 V - critical for battery-powered or energy-harvested edge nodes where leakage dominates standby loss. |
Use Scenario: Securing BACnet MS/TP or LonWorks communication lines in smart lighting and HVAC controllers against induced surges on long cable runs. IC Role / Device Role / Timing Role: Bidirectional clamp on differential bus lines (e.g., A/B) to absorb common-mode transients without disrupting data integrity. Use Value: Symmetrical ±33-V standoff tolerates reverse polarity installation errors - eliminates field returns due to miswired terminations in distributed installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TVS2701DRBR | Lower standoff (±27 V), 34-V clamp at 27-A, same SON-8 package | Suitable for 24-V systems with tighter voltage margins; not rated for ±33-V bipolar operation | Select when protecting 24-V-only analog inputs where 33-V headroom is unnecessary and lower clamp voltage improves safety margin |
| TVS3300DRVR | Unidirectional version, ±33-V standoff but only positive clamping, 38-V clamp at 35-A, SON-6 package | Requires separate protection for negative transients; smaller footprint but no reverse-wiring tolerance | Choose for cost-sensitive 0-to-33-V unipolar signals (e.g., DAC outputs) where reverse polarity risk is eliminated by mechanical design |
Compared with TVS2701DRBR and TVS3300DRVR, the TVS3301DRBR uniquely combines ±33-V bidirectional operation, flat 40-V clamping, and SON-8 thermal pad flexibility - making it the only option for industrial analog I/O requiring both reverse-wiring immunity and high-temp surge endurance without layout compromise.
Availability
TVS3301DRBR is available at Aetrix Electronics and suitable for industrial sensor I/O, PLC analog input modules, and building automation systems requiring stable component supply, long lifecycle support, and guaranteed traceable sourcing.
Supply support for TVS3301DRBR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in industrial-grade protection solutions.
The TVS3301DRBR belongs to TI's Flat-Clamp family - engineered specifically for high-reliability industrial signal line protection where precise clamping, thermal stability, and bidirectional fault tolerance are mandatory.
FAQ
What is the maximum surge current rating for TVS3301DRBR per IEC 61000-4-5?
The TVS3301DRBR is rated for ±27 A of 8/20-µs surge current per IEC 61000-4-5, verified at 27°C ambient. It also withstands ±3 A of 10/1000-µs surge per IEC 61643-321. TI validates this rating through 5,000+ repetitive 25-A pulses at 125°C with no parameter shift - confirming sustained performance in real-world industrial environments where TVS3301DRBR operates.
Does TVS3301DRBR require external bias or control circuitry to function?
No, the TVS3301DRBR is a fully self-contained monolithic device with integrated control circuitry and FETs. It requires no external power, bias resistors, or timing components - it activates automatically when input voltage exceeds ±33 V. This simplifies design and eliminates failure modes associated with auxiliary circuitry, ensuring TVS3301DRBR delivers consistent protection across its full −40°C to +125°C operating range.
Can TVS3301DRBR be used in unidirectional signal paths?
Yes, TVS3301DRBR functions reliably in unidirectional applications, but its bidirectional architecture provides inherent reverse-wiring tolerance - a key advantage over unidirectional alternatives like TVS3300DRVR. When used on 0–33 V signals, TVS3301DRBR still delivers flat 40-V clamping and full IEC 61000-4-5 compliance, though designers may opt for TVS3300DRVR if board space is constrained and reverse polarity risk is physically prevented.
What is the significance of the floating thermal pad in TVS3301DRBR layout?
The exposed thermal pad on TVS3301DRBR must remain electrically floating - not connected to GND or any net - to preserve its ±33-V bidirectional standoff. Grounding the pad creates a parasitic path that degrades negative-voltage blocking capability and can cause catastrophic failure during reverse-wiring events. TI specifies this requirement in the layout guidelines to ensure TVS3301DRBR maintains full specification compliance in production systems.
How does TVS3301DRBR's flat clamping improve system-level design margins?
TVS3301DRBR's active feedback loop holds clamping voltage to 40 V ±1.5 V across temperature and current, unlike traditional TVS diodes whose clamping rises significantly with surge amplitude and temperature. This tight regulation allows designers to select downstream components (e.g., op-amps, ADCs, transceivers) with lower absolute maximum voltage ratings - reducing cost, power, and size while maintaining robustness. That precision is why TVS3301DRBR is specified for demanding industrial applications where margin matters.
TVS3301DRBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-VDFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Clamping:
- 42.5V
- Technology:
- Mixed Technology
- Number of Circuits:
- -
- Applications:
- General Purpose
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SON (3x3)
TVS3301DRBR FAQ
1.How can I place an order for TVS3301DRBR through Aetrix?
Please submit a Request for Quotation (RFQ) for TVS3301DRBR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TVS3301DRBR reliable?
The price and inventory of TVS3301DRBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TVS3301DRBR is usually 5 days.
3.What payment methods are accepted for TVS3301DRBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TVS3301DRBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TVS3301DRBR?
TVS3301DRBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TVS3301DRBR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TVS3301DRBR?
For technical support, including TVS3301DRBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TVS3301DRBR requirements.
6.How does Aetrix verify that TVS3301DRBR is sourced from the original manufacturer or authorized distributors?
All TVS3301DRBR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TVS3301DRBR meets industry standards.
7.What is the process for return or replacement of TVS3301DRBR?
All TVS3301DRBR units undergo pre-shipment inspection (PSI). If there is an issue with TVS3301DRBR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TVS3301DRBR part is unused and in its original packaging.
Return procedure for TVS3301DRBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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