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Texas Instruments TVS1800DRVR
- Part No.:
- TVS1800DRVR
- Manufacturer:
- Texas Instruments
- Category:
- Surge Suppression Ics
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
TVS1800DRVR.pdf
- Description:
- UNIDIR PRECISION SURGE DIODE
- Quantity:
- Payment:
- Shipping:
Inventory:1,737
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Product details
Overview
TVS1800DRVR from Texas Instruments is a unidirectional flat-clamp transient voltage suppression (TVS) diode designed for robust industrial signal line protection. It features 18 V reverse standoff voltage, 24.7 V max clamping voltage at 40 A (8/20 µs), 116 pF capacitance, <1.2 nA leakage at 27°C, and survives 5,000+ repetitive 35 A surges at 125°C - deployed in PLC I/O modules and 12 V power lines.
For engineers reviewing the TVS1800DRVR datasheet, TVS1800DRVR pinout, TVS1800DRVR application, or TVS1800DRVR equivalent, key selection criteria include clamping flatness under high-temperature surge stress, low-leakage operation at 18 V bias, minimal PCB footprint (2 mm × 2 mm SON), and integrated Level 4 IEC 61000-4-2 ESD compliance.
Technical Context
The TVS1800DRVR employs TI's proprietary feedback-controlled flat-clamp architecture to maintain tight voltage regulation during 8/20 µs surges - clamping at 22.7–23.4 V at 40 A and 23.7–24.7 V at 35 A/125°C - eliminating overshoot and enabling downstream ICs with ≤25 V absolute maximum ratings. Its dynamic resistance is 30 mΩ, limiting voltage rise to ~1.2 V under full 40 A surge current.
Unlike conventional TVS diodes, it exhibits minimal derating up to 125°C: clamping performance remains stable across temperature, with leakage rising only from 1.2 nA (27°C) to 9 nA (85°C) and 52 nA (105°C) at VRWM, and slew rate tolerance dropping from 2.5 V/µs (27°C) to 0.7 V/µs (125°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRWM) | 18 V - defines maximum continuous operating voltage before conduction begins; matches 12 V nominal systems with margin. |
| Clamp Voltage (VCLAMP) | 24.7 V at 40 A, 8/20 µs - ensures protected ICs see ≤25 V peak stress, enabling use of lower-voltage-tolerance components. |
| Surge Current Rating | 40 A (IEC 61000-4-5, 8/20 µs) - meets industrial surge immunity requirements for ±1 kV open-circuit test via 42 Ω coupling. |
| Leakage Current | 1.2 nA typical at 27°C, 9 nA at 85°C - enables ultra-low-power signal path protection without loading analog sensors or precision references. |
| Capacitance | 116 pF at 1 MHz, 18 V bias - preserves signal integrity on 15 V analog inputs and high-speed digital I/O without excessive filtering. |
| Package | WSON-6 (DRV), 2.0 mm × 2.0 mm - reduces board area by 70% vs SMA/SMB, supports placement within 2 mm of I/O connectors. |
| ESD Rating | ±18 kV contact / ±30 kV air-gap (IEC 61000-4-2 Level 4) - eliminates need for discrete ESD diodes in front-end protection stages. |
Pinout & Package
TVS1800DRVR uses a thermally enhanced 6-pin WSON (DRV) package with an exposed thermal pad. The device has two functional terminals: IN (pins 4–6, paralleled internally) and GND (pins 1–3 + exposed pad), optimized for low-inductance surge shunting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (pins 4, 5, 6) | Protected signal input | Parallel-connected anode terminals accepting surge current from protected line; low-inductance layout minimizes voltage overshoot during fast transients. |
| GND (pins 1, 2, 3 + exposed pad) | Return path to ground plane | Multi-point grounding including large thermal pad ensures lowest possible surge impedance and efficient heat dissipation during repetitive strikes. |
Key Features
| Feature | Design Value |
|---|---|
| Flat-clamp regulation | Maintains clamping voltage within ±0.7 V across 24–40 A surge range - prevents downstream overvoltage even under worst-case fault currents. |
| High-temp surge endurance | Validated for 5,000+ cycles of 35 A (8/20 µs) at 125°C with zero parameter shift - guarantees long-term reliability in sealed industrial enclosures. |
| Low dynamic resistance | 30 mΩ - limits IR drop to ≤1.2 V at 40 A, enabling precise clamping control without external series impedance. |
| Minimal signal loading | 116 pF capacitance + 1.2 nA leakage - avoids gain error in 15 V analog sensor interfaces and timing skew in 12 V digital control lines. |
| Integrated ESD/EFT protection | Level 4 IEC 61000-4-2 (±18 kV contact) + 80 A IEC 61000-4-4 - replaces discrete ESD arrays and reduces BOM count in medical and PLC designs. |
Applications
| Industrial Sensor I/O | PLC I/O Modules |
|---|---|
Use Scenario: Protecting 4–20 mA current-loop transmitters and RTD inputs against lightning-induced surges on factory floor wiring. IC Role / Device Role / Timing Role: Unidirectional clamping device placed directly at connector entry point to shunt >95% of 40 A surge energy to chassis ground before reaching ADC or isolator. Use Value: Enables use of 24 V-tolerant signal conditioners instead of 36 V-rated parts, reducing system cost by 18% while meeting IEC 61000-4-5 Class 3 immunity. | Use Scenario: Safeguarding digital input channels in modular programmable logic controllers exposed to 12 V supply line transients from relay coil switching. IC Role / Device Role / Timing Role: Standoff-limited TVS suppressing 8/20 µs surges to <25 V within 1 ns, preventing latch-up in microcontroller GPIOs and optocoupler drivers. Use Value: Eliminates need for series ferrites or RC snubbers, cutting channel latency by 3.2 µs and simplifying layout in dense 32-channel backplane designs. |
| 12 V Power Lines | Medical Equipment |
Use Scenario: Input-stage protection for DC/DC converters powering embedded controllers in automotive-grade telematics units. IC Role / Device Role / Timing Role: Primary surge clamp on 12 V rail, coordinated with upstream fuse and downstream ceramic capacitor to limit let-through energy to <10 mJ. Use Value: Withstands 40 A surges without degradation, extending field life beyond 15 years in vehicles operating at –40°C to +105°C ambient. | Use Scenario: ESD and surge hardening of patient-connected analog front-ends in portable ultrasound and ECG monitors. IC Role / Device Role / Timing Role: First-line protector on differential sensor inputs, providing Level 4 IEC 61000-4-2 immunity and 24.7 V clamping to preserve amplifier CMRR and SNR. Use Value: Reduces post-surge calibration drift to <0.02% FS, meeting IEC 60601-1-2 4th edition requirements for Class BF applied parts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TVS1400DRVR | 14 V VRWM, 18.4 V clamp at 43 A - lower standoff, tighter clamping, higher surge rating | Better suited for 5–12 V logic rails; insufficient margin for 12 V nominal systems with 20% tolerance | Select when protecting 3.3 V or 5 V MCU I/O where 14 V standoff provides optimal balance of leakage and clamping headroom. |
| SMAJ18A | 18 V VRWM, 29.2 V clamp at 22.9 A - higher clamping, lower surge rating, SMA package (4.5 mm × 2.7 mm) | Requires larger PCB area; clamps 4.5 V higher than TVS1800DRVR, risking damage to 25 V-max ICs | Choose only if legacy SMA footprint must be retained; otherwise avoid due to 18% larger size and 18% higher clamping voltage. |
Compared with TVS1400DRVR and SMAJ18A, the TVS1800DRVR delivers superior thermal stability (no derating to 125°C), 70% smaller footprint, and 4.5 V lower clamping - making it the optimal choice for space-constrained, high-reliability 12–15 V industrial and medical signal protection.
Availability
TVS1800DRVR is available at Aetrix Electronics and suitable for industrial sensor I/O, PLC I/O modules, and 12 V power lines requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for TVS1800DRVR 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 company delivering analog and embedded processing solutions, with leadership in power management, signal chain, and high-reliability protection devices.
The TVS1800DRVR belongs to TI's Flat-Clamp family of surge protectors, engineered specifically for industrial and medical applications demanding precise, temperature-stable clamping without performance degradation over product lifetime.
FAQ
What is the maximum clamping voltage of TVS1800DRVR under full IEC 61000-4-5 surge conditions?
The TVS1800DRVR clamps to 24.7 V at 40 A, 8/20 µs surge current and 27°C ambient temperature. At elevated temperature (125°C), clamping rises to 24.7 V at 35 A - verified across 5,000 repetitive strikes with no parameter shift. This value is measured with VIN = VRWM prior to surge, per Section 7.6 of the SLVSED4A datasheet.
Does TVS1800DRVR support bidirectional transient protection?
The TVS1800DRVR is a unidirectional device. Bidirectional operation requires two TVS1800DRVR units placed in series with opposite polarity - achieving ±18 V working voltage. While not characterized in the datasheet, TI notes relative behavior will mirror that of the TVS3300 in bidirectional configuration, with minor increases in breakdown and clamping voltage.
How does the 30 mΩ dynamic resistance of TVS1800DRVR impact system-level protection design?
The 30 mΩ dynamic resistance of TVS1800DRVR limits voltage rise across the device to 1.2 V at 40 A surge current (40 A × 0.03 Ω), ensuring total exposure at the protected node stays ≤23.4 V. This enables confident selection of downstream ICs rated for 25 V absolute maximum, reducing bill-of-materials cost and simplifying voltage-margin analysis in 12 V and 15 V systems.
Can TVS1800DRVR be used on high-slew-rate analog signals without unintended clamping?
Yes - but slew rate must be limited to ≤2.5 V/µs at 27°C and ≤0.7 V/µs at 125°C to prevent false triggering. Exceeding these thresholds causes the device to enter low-impedance state momentarily, increasing signal rise time. For 15 V analog inputs with fast edges, add a series resistor to limit dV/dt below threshold while preserving bandwidth.
What is the thermal performance of TVS1800DRVR in a standard 2-layer PCB layout?
In a standard 2-layer PCB with 1 oz copper and 1 cm² thermal pad copper pour, TVS1800DRVR achieves 40°C/W junction-to-board thermal resistance (RθJB). This allows safe operation at full 40 A surge duty cycle up to 125°C ambient, provided the GND pad is fully connected to internal ground planes and vias are placed within 0.5 mm of each GND pin per TI layout guidelines.
TVS1800DRVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 6-WDFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Clamping:
- 18V
- Technology:
- Internal Switch
- Number of Circuits:
- 1
- Applications:
- General Purpose
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (2x2)
TVS1800DRVR FAQ
1.How can I place an order for TVS1800DRVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TVS1800DRVR 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 TVS1800DRVR reliable?
The price and inventory of TVS1800DRVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TVS1800DRVR is usually 5 days.
3.What payment methods are accepted for TVS1800DRVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TVS1800DRVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TVS1800DRVR?
TVS1800DRVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TVS1800DRVR 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 TVS1800DRVR?
For technical support, including TVS1800DRVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TVS1800DRVR requirements.
6.How does Aetrix verify that TVS1800DRVR is sourced from the original manufacturer or authorized distributors?
All TVS1800DRVR 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 TVS1800DRVR meets industry standards.
7.What is the process for return or replacement of TVS1800DRVR?
All TVS1800DRVR units undergo pre-shipment inspection (PSI). If there is an issue with TVS1800DRVR, 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 TVS1800DRVR part is unused and in its original packaging.
Return procedure for TVS1800DRVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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