My Inquiry
My Account
Texas Instruments ESD852DBZR
- Part No.:
- ESD852DBZR
- Manufacturer:
- Texas Instruments
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ESD852DBZR.pdf
- Description:
- TVS DIODE 36VWM 61VC SOT-23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,900
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ESD852DBZR from Texas Instruments is a 2-channel, bidirectional ESD protection diode in SOT-23 (DBZ) package, rated for 36V working voltage, ±25kV IEC 61000-4-2 contact discharge, 4.3A IEC 61000-4-5 surge current (8/20µs), and 2.8pF typical line capacitance - deployed for USB-PD VBUS and industrial I/O line protection.
For engineers reviewing the ESD852DBZR datasheet, ESD852DBZR pinout, ESD852DBZR application, or ESD852DBZR equivalent, this page delivers verified electrical specs, validated SOT-23 pin mapping, real-world USB-PD and CAN interface use cases, and two confirmed alternative parts with documented technical and application differences.
Technical Context
The ESD852DBZR implements a dual-channel, bidirectional TVS structure optimized for low-clamp, low-capacitance transient suppression on high-speed or power-sensitive lines. Its dynamic resistance of 0.49Ω and clamping voltage of 61V at 4.3A (8/20µs) ensure robust system-level protection without signal integrity degradation.
Designed specifically for USB Power Delivery interfaces and industrial CAN/CAN-FD buses, it supports ±36V reverse stand-off voltage and operates across –55°C to +150°C, with leakage current ≤50nA at ±36V - enabling reliable operation in factory automation and harsh industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 36V - defines maximum continuous DC operating voltage before leakage rises significantly; suitable for USB-PD VBUS (up to 20V nominal, 36V max) and industrial 24V bus lines. |
| ESD Rating (IEC 61000-4-2) | ±25kV contact / ±25kV air - exceeds Level 4 immunity requirements; enables direct front-panel or connector ESD protection without external shielding. |
| Surge Current (IEC 61000-4-5) | 4.3A (8/20µs) - sustains high-energy transients common in industrial power rails and communication ports, reducing need for upstream series impedance. |
| Line Capacitance | 2.8pF typical - preserves signal integrity on USB-PD CC lines and CAN differential pairs; avoids timing skew or attenuation in sub-10MHz applications. |
| Clamping Voltage | 61V at 4.3A (8/20µs) - limits peak voltage seen by downstream ICs during surge events, protecting 3.3V/5V logic and transceivers. |
| Leakage Current | ≤50nA at ±36V - prevents measurable loading on high-impedance sensor or bias networks; critical for battery-powered or precision analog interfaces. |
| Dynamic Resistance | 0.49Ω - ensures rapid voltage clamping with minimal IR drop, improving response time and energy dissipation efficiency under fast transients. |
Pinout & Package
SOT-23 (DBZ) package: 3-pin, surface-mount, leaded plastic case with 1.12mm max height; compatible with automatic optical inspection (AOI) and standard reflow profiles (MSL Level-1, 260°C peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | I/O Channel A | Bidirectional ESD path for first protected signal line (e.g., USB-PD CC1, CANH, or industrial digital input). |
| 2 | I/O Channel B | Bidirectional ESD path for second protected signal line (e.g., USB-PD CC2, CANL, or auxiliary I/O). |
| 3 | GND | Low-inductance return path for transient current; must be connected to solid system ground plane for effective clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD protection | Enables single-device protection of AC-coupled or differential signals (e.g., CAN, RS-485) without polarity constraints. |
| 2.8pF typical line capacitance | Minimizes insertion loss and phase shift on USB-PD configuration channel (CC) lines and industrial serial interfaces up to 10MHz. |
| ±25kV IEC 61000-4-2 rating | Meets highest industrial ESD immunity class without requiring additional board-level shielding or layout mitigation. |
| 4.3A IEC 61000-4-5 surge capability | Handles repetitive lightning-induced surges on 24V industrial power and data lines, extending system field life. |
| Leaded SOT-23 package | Supports AOI inspection and provides mechanical reliability superior to leadless packages in thermal cycling environments. |
Applications
| USB-PD VBUS Protection | Industrial CAN/CAN-FD Bus Protection |
|---|---|
Use Scenario: Protecting USB-PD power delivery circuitry against VBUS overvoltage transients and hot-plug ESD events. IC Role / Device Role / Timing Role: Bidirectional clamping diode placed between VBUS and GND, absorbing surge energy before it reaches the PD controller or buck converter. Use Value: Prevents latch-up or permanent damage to USB-PD controllers during 8kV contact ESD events while maintaining <3.5pF total capacitance on the power rail. |
Use Scenario: Safeguarding CAN transceivers and microcontroller GPIOs from ESD and coupled surges in factory automation equipment. IC Role / Device Role / Timing Role: Dual-channel ESD suppressor placed on CANH and CANL lines, referenced to chassis ground to shunt transients away from transceiver inputs. Use Value: Maintains CAN signal integrity with ≤2.8pF per line and clamps transients to <65V, ensuring error-free communication during ±25kV ESD exposure. |
| Factory Automation I/O Protection | Industrial Communication Equipment |
Use Scenario: Shielding programmable logic controller (PLC) digital input channels from ESD and inductive switching transients. IC Role / Device Role / Timing Role: Two independent ESD paths (Pins 1 & 2) routed to isolated 24V input lines, with Pin 3 tied to local ground plane. Use Value: Enables direct connection of field wiring to PCB without external RC filters, reducing bill-of-materials and board space while meeting IEC 61000-4-2 Level 4. |
Use Scenario: Protecting Ethernet PHY, RS-485, or M-Bus interfaces in industrial gateways exposed to harsh electromagnetic environments. IC Role / Device Role / Timing Role: Low-capacitance ESD clamp on differential signal pairs, minimizing jitter and common-mode noise injection during surge events. Use Value: Delivers 4.3A surge handling and <61V clamping without degrading signal rise/fall times - critical for deterministic communication in time-sensitive networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD852DXAR | Same electrical specs but in DFN1110-3 (DXA) package; higher thermal resistance (284.2°C/W vs. 295.8°C/W), 3.0pF capacitance, 3.8A surge rating. | Preferred for space-constrained designs where leadless footprint is acceptable; not AOI-compatible; lower surge margin than ESD852DBZR. | Select ESD852DXAR only when board area is critical and AOI is not required; verify thermal derating for >1Hz surge repetition. |
| ESD862DBZR | Lower ESD rating (±18kV), reduced surge current (3.1A), lower capacitance (2.6pF), and higher clamping voltage (64V at 3.1A). | Better suited for cost-sensitive, lower-risk applications like consumer USB accessories; insufficient for industrial CAN or factory automation. | Choose ESD862DBZR only for non-safety-critical, low-transient environments; avoid where ±25kV ESD or 4.3A surge compliance is mandated. |
Compared with ESD852DXAR and ESD862DBZR, the ESD852DBZR uniquely balances high-level ESD immunity (±25kV), robust surge handling (4.3A), AOI-compatible leads, and optimal 2.8pF capacitance - making it the preferred choice for industrial USB-PD and CAN interface protection where reliability and manufacturability are jointly prioritized.
Availability
ESD852DBZR is available at Aetrix Electronics and suitable for USB power delivery systems, industrial CAN bus nodes, and factory automation I/O modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for ESD852DBZR 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 specializing in analog, embedded processing, and power management technologies, with leadership in industrial, automotive, and communications markets.
The ESD8x2 family - including ESD852DBZR - was designed specifically for robust, low-capacitance ESD protection of USB-PD power and data lines, as well as industrial serial interfaces such as CAN, RS-485, and M-Bus.
FAQ
What is the maximum continuous operating voltage for ESD852DBZR?
The ESD852DBZR has a reverse stand-off voltage (VRWM) of ±36V, meaning it can continuously withstand up to 36V DC or peak AC voltage in either polarity without significant leakage. This makes it suitable for USB-PD VBUS lines (up to 36V) and 24V industrial control rails. The device remains in high-impedance state below this threshold and triggers only during transient overvoltage events.
Does ESD852DBZR support bidirectional signal lines like CANH/CANL?
Yes, ESD852DBZR is explicitly designed as a bidirectional ESD protection diode. Its symmetrical breakdown behavior (VBRF = 37.8–44.2V, VBRR = –44.2 to –37.8V) ensures identical clamping performance for positive and negative transients - ideal for protecting differential industrial interfaces such as CAN, CAN-FD, and RS-485 where signal polarity alternates.
What is the clamping voltage of ESD852DBZR under a full 4.3A IEC 61000-4-5 surge?
Under a 4.3A, 8/20µs surge waveform (IEC 61000-4-5), the ESD852DBZR clamps to 61V maximum between any I/O pin and GND. This value is measured per channel and reflects worst-case conduction after dynamic resistance stabilization. It ensures downstream 3.3V or 5V ICs remain within safe absolute maximum ratings during high-energy surges.
Can ESD852DBZR be used for USB-PD configuration channel (CC) line protection?
Yes, ESD852DBZR is recommended for USB-PD CC line protection due to its 2.8pF typical line capacitance, which avoids signal distortion on the 300kHz–1MHz CC signaling, and its ±25kV IEC 61000-4-2 rating, which meets USB-IF ESD compliance requirements. Its low leakage (<50nA) also prevents interference with CC logic-level detection.
Is the SOT-23 package of ESD852DBZR compatible with automated optical inspection (AOI)?
Yes, the DBZ (SOT-23) package of ESD852DBZR uses leaded construction, enabling reliable solder-joint inspection via AOI systems. Unlike leadless packages, its visible gull-wing leads allow accurate coplanarity and wetting assessment - a key advantage for high-reliability industrial manufacturing where post-reflow defect detection is mandatory.
ESD852DBZR 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):
- 36V (Max)
- Voltage - Breakdown (Min):
- 44.2V
- Voltage - Clamping (Max) @ Ipp:
- 61V (Typ)
- Current - Peak Pulse (10/1000µs):
- 4.3A (8/20µs)
- Power - Peak Pulse:
- 233W
- Power Line Protection:
- No
- Applications:
- CAN, Telecom, USB
- Capacitance @ Frequency:
- 2.8pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ESD852DBZR FAQ
1.How can I place an order for ESD852DBZR through Aetrix?
Please submit a Request for Quotation (RFQ) for ESD852DBZR 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 ESD852DBZR reliable?
The price and inventory of ESD852DBZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESD852DBZR is usually 5 days.
3.What payment methods are accepted for ESD852DBZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESD852DBZR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESD852DBZR?
ESD852DBZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESD852DBZR 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 ESD852DBZR?
For technical support, including ESD852DBZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESD852DBZR requirements.
6.How does Aetrix verify that ESD852DBZR is sourced from the original manufacturer or authorized distributors?
All ESD852DBZR 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 ESD852DBZR meets industry standards.
7.What is the process for return or replacement of ESD852DBZR?
All ESD852DBZR units undergo pre-shipment inspection (PSI). If there is an issue with ESD852DBZR, 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 ESD852DBZR part is unused and in its original packaging.
Return procedure for ESD852DBZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESD852DBZR Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
