ESD762DBZR - ±24V Bidirectional ESD/TVS Diode | Texas Instruments
MPN: ESD762DBZR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.42 | $0.42 |
| 10 | $0.36 | $3.60 |
| 100 | $0.28 | $28.00 |
| 500 | $0.22 | $110.00 |
| 1,000 | $0.18 | $180.00 |
| 3,000 | $0.14 | $420.00 |
ESD762DBZR Overview
A TVS diode is a semiconductor clamp designed to protect interface lines (USB, HDMI, audio, GPIO, industrial buses) by diverting transient over-voltage energy away from protected ICs. When the line voltage exceeds the device's breakdown threshold, the TVS shunts current to ground, clamping the line to a safe voltage until the transient passes. TVS diodes sit within the broader surge-protection hierarchy: TVS diode -> transient suppressor -> circuit protection component -> passive/semiconductor protection device, and they are specified by two complementary industry standards, IEC 61000-4-2 (ESD) and IEC 61000-4-5 (surge).
Key features include 1.7 pF typical diode capacitance (suitable for USB 2.0 and general-purpose signal lines that do not require the lower capacitance of RF-rated protection), bidirectional polarity (a single part protects both positive and negative excursions, eliminating orientation mistakes during PCB assembly), ±20 kV contact/air-gap ESD rating per IEC 61000-4-2 level 4, and 2.5 A peak pulse current handling on the 8/20 µs waveform. The SOT-23-3 footprint offers a compact 2.9 mm x 1.6 mm land pattern compatible with high-density USB-PD, IoT, and portable consumer designs.
The ESD762 uses a Zener-triggered avalanche clamp architecture. Its low dynamic resistance (R_dyn) keeps the clamping voltage low even at high surge currents, which reduces stress on the protected device's bond wires and I/O structures. Compared with older single-channel parts, the dual-channel integration halves the board area and BOM count for two-line protection.
Typical applications include USB Type-C/USB-PD Vbus and CC/SBU line protection, HDMI/MIPI signal-line ESD clamps, audio codec jack protection, industrial RS-485/RS-232 interface protection, and IoT sensor ports. The wide ±24 V working range makes it particularly suited to 24 V industrial environments and automotive infotainment buses.
When designing with this device, route the protected trace through the ESD762 with the shortest possible stub length to the connector ground. A ground via placed immediately adjacent to pin 2 minimizes the inductance of the discharge path, which directly determines the residual clamping voltage seen by the protected IC.
This page synthesizes distributor pricing, parametric drop-in alternatives, and PCB layout notes not consolidated on the TI product page.
Drop-in alternatives for ESD762DBZR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ESD762DBZT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ESD762DCKR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ESD752DBZR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ESD752DCKR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TPD4E004DRYR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ESD762DBZR Maximum Ratings & Electrical Characteristics
| Manufacturer | Texas Instruments |
| Product Type | Bidirectional ESD Protection TVS Diode |
| Number of Channels | 2 (dual-channel) |
| Working Voltage (Vrwm) | ±24 V |
| Clamping Voltage (Vc) | 36 V (typ) at 2.5 A 8/20 µs |
| Peak Pulse Current (Ipp) | 2.5 A (8/20 µs waveform) |
| ESD Rating (Contact) | ±20 kV (IEC 61000-4-2 level 4) |
| ESD Rating (Air-Gap) | ±20 kV (IEC 61000-4-2 level 4) |
| Diode Capacitance (Cd) | 1.7 pF (typ) |
| Polarity | Bidirectional |
| Package | SOT-23-3 (DBZ) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C |
| RoHS Status | Compliant |
| Lead-Free | Yes |
ESD762DBZR Pin Configuration
| Pin 1 | IO1 — Protected I/O line, channel 1 |
| Pin 2 | GND — Ground (common for both channels) |
| Pin 3 | IO2 — Protected I/O line, channel 2 |
Peak Pulse Power vs Pulse Duration
Typical Applications
ESD762DBZR is suitable for 6 applications: USB Type-C / USB-PD Vbus Protection, Industrial 24V RS-485 / RS-232 Interface Protection, Audio Codec Headphone Jack Protection, HDMI / MIPI Display Signal-Line ESD Clamp, IoT Sensor / GPIO Port Protection, Automotive Infotainment Bus Protection.
USB Type-C / USB-PD Vbus Protection
The ESD762DBZR's ±24 V working voltage comfortably covers USB-PD Vbus rails that swing from 5 V to 20 V during power-role negotiation, while its 36 V typical clamping voltage and 2.5 A 8/20 µs surge rating protect downstream USB-PD controllers from hot-plug inrush and ESD events at the connector. With 1.7 pF capacitance the part adds no measurable insertion loss on USB 2.0 data lines that share the Vbus connector pin via CC/SBU routing. Placing the device within 2 mm of the Type-C receptacle ground via ensures the discharge loop inductance stays below 1 nH, keeping the residual clamping voltage at the protected CC controller below its 30 V abs-max rating.
Recommended
Industrial 24V RS-485 / RS-232 Interface Protection
Industrial RS-485 and RS-232 transceivers are routinely exposed to ±15 kV contact ESD and 8/20 µs surge events from cable discharge and motor back-EMF. The ESD762DBZR's ±24 V working voltage tolerates the 24 V common-mode rails common in factory automation, and its ±20 kV IEC 61000-4-2 level-4 rating exceeds the IEC 61850 and IEC 61131-2 industrial EMC requirements. Dual-channel integration lets a single SOT-23-3 part protect both A and B lines of an RS-485 pair, halving the BOM versus single-channel protection.
Recommended
Audio Codec Headphone Jack Protection
Audio codec outputs driving headphone jacks are vulnerable to ESD from human-body discharge when the user plugs in a 3.5 mm plug. The ESD762DBZR's 1.7 pF capacitance is well below the 50 pF budget of audio paths (preventing high-frequency roll-off above 20 kHz), and its 36 V clamp protects the codec output from the 8 kV contact discharges specified in IEC 61000-4-2. Bidirectional polarity lets a single device protect both left and right channel outputs of a stereo codec without orientation concerns during PCB assembly.
Recommended
HDMI / MIPI Display Signal-Line ESD Clamp
HDMI and MIPI DSI/CSI-2 connectors on tablets, monitors, and embedded displays are routinely zapped by user-handle ESD. The ESD762DBZR's ±20 kV air-gap rating meets the HDMI 2.0 ESD requirement of ±15 kV air-gap with margin, and its 1.7 pF capacitance supports MIPI D-PHY 1.2 data rates up to 2.5 Gbps with negligible eye-diagram closure. A dual-channel device clamps both data and clock lines of a single MIPI lane pair, simplifying layout versus discrete single-channel parts.
Recommended
IoT Sensor / GPIO Port Protection
Battery-powered IoT sensor modules exposed to outdoor humidity and operator handling can accumulate ±10 kV contact ESD on exposed GPIO pins. The ESD762DBZR's 1.7 pF capacitance and 36 V clamping voltage protect 3.3 V GPIO controllers from both ESD events and small inductive transients, and its dual-channel integration lets a single part cover two GPIO pins per sensor node. The SOT-23-3 2.9 mm x 1.6 mm footprint fits beneath the connector shroud of compact IoT form factors.
Recommended
Automotive Infotainment Bus Protection
Automotive infotainment buses (CAN, LIN, LVDS) operate in electrically harsh environments with load-dump transients up to 40 V and ±15 kV ESD from operator handling. The ESD762DBZR's ±24 V working voltage and 36 V clamp absorbs CAN bus short-to-battery events below 24 V while protecting the CAN transceiver from transients above its abs-max. Although the device itself is not AEC-Q100 qualified, it is widely used as a secondary protection device alongside automotive-grade primary protectors in non-safety-critical infotainment ECUs.
Recommended
Recommended Products Summary
Engineering reference data for ESD762DBZR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ESD762DBZT | ESD762DCKR | ESD752DBZR | ESD752DCKR | TPD4E004DRYR |
|---|---|---|---|---|---|---|
| Package | SOT-23-3 (DBZ) | SOT-23-3 (DBZ) - same | SC-70 (DCK) - same die, smaller footprint | SOT-23-3 (DBZ) - same | SC-70 (DCK) - same | SOT-23-3 (DBZ) - same footprint |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Working Voltage (Vrwm) | ±24 V | ±24 V | ±24 V | ±24 V | ±24 V | 5.5 V |
| Channels | 2 | 2 | 2 | 2 | 2 | 4 |
| Polarity | Bidirectional | Bidirectional | Bidirectional | Bidirectional | Bidirectional | Bidirectional |
| Approx. Unit Price (1k qty) | $0.18 | $0.18 | $0.20 | $0.22 | $0.24 | $0.45 |
Key Differentiators
- Wide ±24 V working voltage covers USB-PD Vbus and 24 V industrial rails (vs ESD751NDBVR (±5 V working))
- Dual-channel integration halves BOM count versus single-channel parts (vs Single-channel TVS such as SMAJ24CA)
- Higher 8/20 µs surge current than competing 24 V TVS parts (vs Generic 24 V bidirectional TVS (e.g. SMBJ24CA))
Design Notes
Place the ESD762DBZR within 2 mm of the connector pin being protected, with the ground via placed immediately adjacent to pin 2 (GND). The discharge loop inductance is the dominant factor in clamping performance: every additional 1 nH of loop inductance adds roughly 2-3 V of residual overshoot at 8 kV contact discharge. Keep the protected trace straight-through (no stubs) and route the ground connection with at least two parallel vias to minimize parasitic inductance.
The 1.7 pF typical diode capacitance introduces a 6 dB pole on a 50 Ohm controlled-impedance line at roughly 1.9 GHz, well above USB 2.0 (480 Mbps) but within the third-harmonic band of USB 3.2 Gen 2 (10 Gbps). For USB 3.x SuperSpeed, HDMI 2.x, or MIPI D-PHY/CSI-2 above 2.5 Gbps, select a sub-0.5 pF part such as TPD1E04U04 instead to avoid eye-diagram closure.
Do not connect the ESD762DBZR's protected I/O pin (1 or 3) directly to a DC rail above 24 V continuous; the ±24 V working voltage is the maximum DC bias the device tolerates without entering conduction. For 48 V telecom or PoE applications, the part will clamp continuously and overheat. Verify that any pre-biased T_in/output of the protected line stays within ±24 V under all operating modes, including worst-case fault conditions.
Compliance Information
RoHS and lead-free compliance confirmed via TI product page. Not AEC-Q100 qualified; use automotive-grade TVS (e.g. TPD1E04U04-Q1) for safety-critical automotive designs.
