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Texas Instruments ESD652DBZRQ1
- Part No.:
- ESD652DBZRQ1
- Manufacturer:
- Texas Instruments
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ESD652DBZRQ1.pdf
- Description:
- AUTOMOTIVE, 18V TWO-CHANNEL BIDI
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
ESD652DBZRQ1 from Texas Instruments is a bidirectional transient voltage suppression (TVS) diode designed for I/O line protection in industrial battery management and communication interfaces. It delivers ±30kV IEC 61000-4-2 ESD immunity, 5.5A (8/20μs) IEC 61000-4-5 surge clamping, and 4pF typical line capacitance - enabling robust protection of high-speed analog or digital signal paths in factory automation and grid infrastructure systems.
For engineers reviewing the ESD652DBZRQ1 datasheet, ESD652DBZRQ1 pinout, ESD652DBZRQ1 application, or ESD652DBZRQ1 equivalent, this device serves as a low-capacitance, automotive-grade ESD suppressor for bidirectional signal lines requiring stable clamping voltage (22–32V at 5.5A), tight thermal performance (RθJA = 249.2°C/W), and SOT-23 (DBZ) PCB compatibility.
Technical Context
The ESD652DBZRQ1 implements a silicon avalanche diode structure optimized for fast response to sub-nanosecond ESD transients and sustained 8/20μs surge events. Its symmetrical bidirectional breakdown (VBR ≥19V) and low dynamic resistance (RDYN = 0.32Ω) ensure consistent clamping in both polarities without polarity-sensitive layout constraints.
Designed for placement directly at connector or IC interface points, it operates across –40°C to +125°C with leakage current ≤50nA at ±18V and integrates seamlessly into space-constrained SOT-23 footprints while maintaining IEC 61000-4-5 Level 3 surge compliance (5.5A peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IEC 61000-4-2 ESD Rating | ±30kV contact / ±30kV air-gap - exceeds Class 4 immunity requirements for industrial end-equipment interfaces. |
| IEC 61000-4-5 Surge Rating | 5.5A (8/20μs) - clamps transient energy before downstream ICs exceed absolute maximum ratings. |
| Clamping Voltage (VCLAMP) | 25–32V at ±5.5A - limits stress on protected ICs during worst-case surge events. |
| Line Capacitance (CLINE) | 4pF typical at 1MHz - preserves signal integrity on USB, RS-485, CAN, or sensor analog lines. |
| Working Voltage (VRWM) | ±18V - supports 12V/24V industrial bus rails and battery management system voltage domains. |
| Dynamic Resistance (RDYN) | 0.32Ω - minimizes voltage overshoot during fast-rising transients via low-impedance conduction path. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood, control cabinet, and outdoor grid infrastructure environments. |
Pinout & Package
ESD652DBZRQ1 is housed in a leaded 3-pin SOT-23 (DBZ) package measuring 2.92mm × 2.37mm with 1.12mm max height, optimized for AOI inspection and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (IO) | I/O terminal | Bidirectional surge path - connects to protected signal line; shares clamping function with Pin 2. |
| Pin 2 (IO) | I/O terminal | Second bidirectional surge path - enables dual-line protection (e.g., differential pair) using single device. |
| Pin 3 (GND) | Ground reference | Low-inductance return path to system ground plane; must be routed with minimal trace length for effective clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional polarity support | Enables single-device protection of AC-coupled or floating signal lines without polarity biasing circuitry. |
| 2-channel integrated protection | Protects two independent I/O lines (e.g., RS-485 A/B, CAN H/L) with one SOT-23 footprint - reduces BOM count and board area. |
| 4pF typical IO capacitance | Minimizes signal distortion and timing skew on high-speed interfaces up to 100 Mbps without external tuning. |
| Automotive-grade qualification | Q1 suffix indicates AEC-Q100 Grade 1 qualification (–40°C to +125°C), supporting safety-critical industrial and automotive subsystems. |
| SOT-23 (DBZ) package | Standardized 3-pin leaded footprint compatible with legacy pick-and-place equipment and automated optical inspection (AOI). |
Applications
| Factory Automation I/O Protection | Building Automation Sensors |
|---|---|
|
Use Scenario: Protecting 4–20mA current loop inputs and Modbus RTU RS-485 transceivers from ESD events during field wiring and maintenance. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between connector and transceiver IC to shunt transients to ground before reaching sensitive input stages. Use Value: Prevents latch-up or permanent damage to isolated RS-485 receivers during ±30kV contact discharge, maintaining system uptime in dusty, high-static environments. |
Use Scenario: Shielding temperature, humidity, and CO₂ sensor analog outputs (0–10V, 0–5V) from electrostatic discharge in HVAC control panels. IC Role / Device Role / Timing Role: Low-capacitance ESD suppressor mounted at sensor cable entry point to preserve DC accuracy and avoid signal attenuation. Use Value: Maintains <1% full-scale error over lifetime by limiting leakage current to ≤50nA at ±18V and clamping surges below 32V. |
| Grid Infrastructure Communication | Energy Storage System Monitoring |
|
Use Scenario: Safeguarding IEC 61850 GOOSE Ethernet PHY interfaces and fiber media converters in substation automation cabinets exposed to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage transient protector on Ethernet data lines, working in coordination with common-mode chokes and secondary TVS arrays. Use Value: Achieves 5.5A (8/20μs) surge handling without derating - critical for meeting IEC 61000-4-5 Level 3 requirements in outdoor substations. |
Use Scenario: Protecting cell voltage monitoring ICs and isolation amplifiers in lithium-ion battery packs against ESD during module assembly and service access. IC Role / Device Role / Timing Role: Bidirectional clamp on analog sensing lines (e.g., LTC6813 inputs) to prevent false triggering or ADC saturation during human-handling events. Use Value: Ensures continuous BMS operation by limiting clamped voltage to ≤25V at 1A - well below the 36V absolute max rating of precision monitoring ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2E001DRYR | Unidirectional, 5.5V VRWM, 1.5pF capacitance, lower surge rating (4A). | Best suited for low-voltage logic-level I/O (e.g., GPIO, I²C); not rated for ±18V working voltage. | Select only when protecting 3.3V/5V digital lines where ultra-low capacitance is prioritized over high-voltage surge margin. |
| ESD8472DMUTAG | Bidirectional, 12V VRWM, 0.5pF capacitance, automotive AEC-Q101 qualified. | Optimized for high-speed automotive infotainment (USB 2.0, HDMI); lacks IEC 61000-4-5 surge rating. | Prefer for >480Mbps interfaces where sub-1pF capacitance is mandatory - but verify system-level surge compliance separately. |
Compared with TPD2E001DRYR and ESD8472DMUTAG, ESD652DBZRQ1 uniquely balances ±18V working voltage, 5.5A surge capability, and 4pF capacitance - making it the only option among the three qualified for industrial 24V bus protection with full IEC 61000-4-5 Level 3 compliance.
Availability
ESD652DBZRQ1 is available at Aetrix Electronics and suitable for factory automation I/O protection, building automation sensor interfaces, and grid infrastructure communication systems requiring stable component supply, automotive-grade reliability, and long-term lifecycle continuity.
Supply support for ESD652DBZRQ1 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 for industrial, automotive, and personal electronics markets.
The ESD652DBZRQ1 belongs to TI's automotive-qualified ESD protection portfolio, engineered specifically for robust transient suppression in harsh-environment industrial control and energy infrastructure applications.
FAQ
What is the primary circuit role of ESD652DBZRQ1?
The ESD652DBZRQ1 functions as a bidirectional transient voltage suppressor (TVS) diode that provides low-impedance shunt paths to ground for ESD and surge events on signal or power lines. Its core role is to clamp transient voltages - such as ±30kV IEC 61000-4-2 discharges or 5.5A IEC 61000-4-5 surges - to safe levels (<32V) before they reach sensitive downstream ICs. This protects interfaces like RS-485, CAN, or analog sensor inputs in industrial systems. The ESD652DBZRQ1 achieves this through symmetrical avalanche breakdown and low dynamic resistance (0.32Ω), ensuring rapid response and minimal voltage overshoot.
Does ESD652DBZRQ1 support bidirectional signal lines without external biasing?
Yes, ESD652DBZRQ1 is inherently bidirectional due to its symmetrical silicon avalanche structure, allowing it to protect AC-coupled, floating, or differential signal lines - such as RS-485 A/B or CAN H/L - without requiring external DC biasing or polarity-specific layout. Pins 1 and 2 serve as interchangeable I/O terminals, each capable of conducting surge current in either direction relative to Pin 3 (GND). This eliminates the need for separate positive/negative clamps and simplifies PCB routing for balanced interfaces. The ESD652DBZRQ1 maintains identical clamping behavior (VCLAMP ≤32V at ±5.5A) and leakage (<50nA) in both polarities across its full operating temperature range.
What is the maximum surge current rating for ESD652DBZRQ1 and under what standard?
The ESD652DBZRQ1 is rated for 5.5A peak pulse current (IPPM) under the IEC 61000-4-5 standard using an 8/20μs exponential decay waveform at 25°C ambient. This rating corresponds to Level 3 surge immunity per IEC 61000-4-5, making it suitable for industrial environments with moderate lightning-induced coupling or switching transients. The device dissipates up to 176W peak pulse power (PPPM) during such events. Clamping voltage remains within 25–32V at 5.5A, ensuring protected ICs stay below their absolute maximum voltage ratings. Derating applies above 25°C per its thermal metrics (RθJA = 249.2°C/W), and actual system-level surge performance depends on PCB layout, grounding, and upstream impedance.
How does the 4pF line capacitance of ESD652DBZRQ1 impact high-speed interface design?
The 4pF typical line-to-ground capacitance (CLINE) of ESD652DBZRQ1 enables reliable protection of high-speed digital interfaces up to 100 Mbps - including RS-485, CAN FD, and industrial Ethernet PHYs - without significant signal rise-time degradation or reflection-induced jitter. At 1MHz, this capacitance introduces negligible impedance (>40kΩ), preserving DC accuracy for analog sensors. Unlike sub-1pF alternatives (e.g., ESD8472), the ESD652DBZRQ1 trades minimal capacitance increase for higher working voltage (±18V) and full IEC 61000-4-5 compliance - a deliberate design choice for industrial 24V systems where signal bandwidth is secondary to surge robustness and voltage margin.
Is ESD652DBZRQ1 qualified for automotive applications?
Yes, the "Q1" suffix in ESD652DBZRQ1 denotes AEC-Q100 Grade 1 qualification, certifying it for automotive use across –40°C to +125°C ambient temperatures. It meets stress test requirements for thermal cycling, humidity bias, and ESD robustness per AEC-Q100 Rev H. While not intended for safety-critical ASIL-D domains, the ESD652DBZRQ1 is approved for body electronics, battery management modules, and gateway ECUs where ESD protection of LIN, CAN, or sensor interfaces is required. Its automotive qualification ensures process consistency, lot traceability, and failure rate limits aligned with automotive production standards - distinct from the commercial-grade ESD652DBZR variant.
ESD652DBZRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 2
- Voltage - Reverse Standoff (Typ):
- 18V (Max)
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 32V
- Current - Peak Pulse (10/1000µs):
- 5.5A (8/20µs)
- Power - Peak Pulse:
- 176W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 4pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ESD652DBZRQ1 FAQ
1.How can I place an order for ESD652DBZRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ESD652DBZRQ1 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 ESD652DBZRQ1 reliable?
The price and inventory of ESD652DBZRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESD652DBZRQ1 is usually 5 days.
3.What payment methods are accepted for ESD652DBZRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESD652DBZRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESD652DBZRQ1?
ESD652DBZRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESD652DBZRQ1 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 ESD652DBZRQ1?
For technical support, including ESD652DBZRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESD652DBZRQ1 requirements.
6.How does Aetrix verify that ESD652DBZRQ1 is sourced from the original manufacturer or authorized distributors?
All ESD652DBZRQ1 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 ESD652DBZRQ1 meets industry standards.
7.What is the process for return or replacement of ESD652DBZRQ1?
All ESD652DBZRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with ESD652DBZRQ1, 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 ESD652DBZRQ1 part is unused and in its original packaging.
Return procedure for ESD652DBZRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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