Overview
The TVS2701DRBR, produced by Texas Instruments, is a 27-V bidirectional Flat-Clamp surge protection device designed to provide robust protection against high-power transients and lightning strikes. This device utilizes TI's Flat-Clamp technology, which ensures precise flat clamping during fault events, thereby reducing system exposure to overvoltage conditions. The TVS2701 is particularly suited for applications requiring protection against bipolar signaling or miswiring conditions, thanks to its bidirectional polarity and ±27-V operating range.
The device is packaged in a small 3 mm × 3 mm SON footprint, making it ideal for space-constrained applications. It offers low leakage current and capacitance, minimizing its impact on the protected line. The TVS2701 has been rigorously tested to survive over 5,000 repetitive strikes of 27-A, 8/20-µs surge current at 125°C, ensuring long-term reliability and performance.
Key Specifications
| Parameter | Test Conditions | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|
| Maximum Surge Current (IEC 61000-4-5, 8/20 µs) | TA < 125°C | ±27 | A | ||
| IEC 61000-4-5 Power (8/20 µs) | TA < 125°C | 950 | W | ||
| IEC 61643-321 Current (10/1000 µs) | ±3.5 | A | |||
| IEC 61643-321 Power (10/1000 µs) | 120 | W | |||
| Leakage Current (ILEAK) | VIN = ±VRWM, TA = 27°C | 0.8 | 30 | nA | |
| Leakage Current (ILEAK) | VIN = ±VRWM, TA = 85°C | 400 | nA | ||
| Break-down Voltage (VBR) | IIN = ±1mA | 29.6 | 32 | V | |
| Clamp Voltage (VCLAMP) | ±Ipp IEC 61000-4-5 Surge (8/20 µs), VIN = 0 V before surge, TA = 27°C | 34 | 35.7 | V | |
| Dynamic Resistance (RDYN) | 8/20 µs surge, TA = 25°C | 40 | mΩ | ||
| Input Pin Capacitance (CIN) | VIN = VRWM, f = 1 MHz, 30 mVpp, IO to GND | 57 | pF |
Key Features
- Protection against 1-kV, 42-Ω IEC 61000-4-5 surge test for industrial signal lines
- Bidirectional polarity enables protection against bipolar signaling or miswiring conditions
- Clamping voltage of 34 V at 27-A, 8/20-µs surge current
- Standoff voltage: ±27 V
- Small 3 mm × 3 mm SON footprint for space-constrained applications
- Survives over 5,000 repetitive strikes of 27-A, 8/20-µs surge current at 125°C
- Low leakage current: 0.8 nA typical at 27°C and 400 nA maximum at 85°C
- Low capacitance: 57 pF
- Integrated Level 4 IEC 61000-4-2 ESD protection and 80 A of IEC 61000-4-4 EFT protection
Applications
- Industrial sensor I/O
- PLC I/O modules
- Analog inputs
- Appliances
- Medical equipment
- Building automation
Q & A
- What is the primary function of the TVS2701DRBR?
The TVS2701DRBR is a bidirectional Flat-Clamp surge protection device designed to protect systems from high-power transients and lightning strikes.
- What are the key specifications of the TVS2701DRBR?
The device can handle up to ±27 A of IEC 61000-4-5 surge current, has a clamping voltage of 34 V, and operates within a ±27 V range. It also features low leakage current and capacitance.
- What types of applications is the TVS2701DRBR suitable for?
The TVS2701DRBR is suitable for industrial sensor I/O, PLC I/O modules, analog inputs, appliances, medical equipment, and building automation.
- How does the TVS2701DRBR protect against miswiring conditions?
The TVS2701DRBR is bidirectional, allowing it to protect against reverse wiring conditions by withstanding –27 V without breaking down or damaging the input.
- What is the significance of the small SON footprint of the TVS2701DRBR?
The small 3 mm × 3 mm SON footprint allows the device to be placed close to the input connector, reducing the path length for fault current and improving fault protection.
- How robust is the TVS2701DRBR against repetitive surge strikes?
The TVS2701DRBR can survive over 5,000 repetitive strikes of 27-A, 8/20-µs surge current at 125°C without performance degradation.
- What ESD and EFT protections does the TVS2701DRBR offer?
The TVS2701DRBR integrates Level 4 IEC 61000-4-2 ESD protection and 80 A of IEC 61000-4-4 EFT protection.
- What is the operating temperature range of the TVS2701DRBR?
The device operates over a wide ambient temperature range of –40°C to +125°C.
- How does the TVS2701DRBR's flat clamping feature benefit system design?
The flat clamping feature helps keep the clamping voltage low, allowing designers to use lower-cost, lower voltage tolerant downstream ICs without sacrificing robustness.
- What testing standards does the TVS2701DRBR comply with?
The TVS2701DRBR complies with IEC 61000-4-5 and IEC 61643-321 standards for surge protection.
