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Texas Instruments ESDS304DBVR
- Part No.:
- ESDS304DBVR
- Manufacturer:
- Texas Instruments
- Category:
- TVS Diodes
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ESDS304DBVR.pdf
- Description:
- TVS DIODE 3.6VWM 3VC SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:7,049
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Product details
Overview
ESDS304DBVR from Texas Instruments is a 4-channel unidirectional TVS diode array for high-speed data-line ESD and surge protection, featuring ±30kV IEC 61000-4-2 contact/air discharge, 12A (8/20μs) IEC 61000-4-5 surge current handling, 2.3pF typical IO-to-GND capacitance, 4.5V minimum DC breakdown voltage, and operation across –40°C to +125°C - deployed in Ethernet 1G, USB 2.0, and GPIO interfaces.
For engineers reviewing the ESDS304DBVR datasheet, ESDS304DBVR pinout, ESDS304DBVR application, or ESDS304DBVR equivalent, key selection criteria include ultra-low clamping voltage (6V at 12A), sub-50nA leakage at 3.6V, flow-through SOT23-5 routing compatibility, and verified 1-Gbps signal integrity with <0.5dB insertion loss up to 1GHz.
Technical Context
The ESDS304DBVR implements a passive snapback-triggered diode architecture optimized for transient suppression on bidirectional high-speed lines. Each of its four I/O channels operates independently with identical electrical characteristics, including 3.6V reverse standoff voltage and 5V holding voltage after triggering.
Its low dynamic resistance and fast response (<1ns) enable clamping of ±30kV ESD events while maintaining signal fidelity - validated by differential insertion loss ≤0.5dB at 125MHz (Ethernet 1000Base-T) and ≤3dB up to 1GHz per S21 measurements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IEC 61000-4-2 ESD | ±30kV contact & air discharge - exceeds Level 4, enabling robust human-interface port protection without system-level failure. |
| Surge Clamping Voltage | 6V at 12A (8/20μs) - limits stress on downstream PHY ICs during lightning-induced or coupled surges. |
| IO-to-GND Capacitance | 2.3pF typical - preserves signal integrity for 1-Gbps Ethernet and USB 2.0 with minimal rise-time degradation. |
| DC Breakdown Voltage | ≥4.5V - ensures reliable blocking above 3.6V nominal interface voltage while avoiding false triggering. |
| Leakage Current | 3nA typical at 3.6V - prevents measurable loading on low-power or high-impedance receiver inputs. |
| Operating Temperature | –40°C to +125°C - supports industrial-grade deployment in gateways, NVRs, and outdoor networking equipment. |
| Package | SOT23-5 (DBV) - enables compact, flow-through PCB layout with GND on pin 2 and I/O pins on 1,3,4,5. |
Pinout & Package
SOT23-5 (DBV) package: 2.9mm × 1.6mm × 1.45mm body, gull-wing leads, RoHS-compliant matte tin lead finish, MSL Level-1, 260°C peak reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | I/O1 | ESD-protected signal line input/output - connects directly to Ethernet TX+/RX+ or USB D+ trace. |
| 2 | GND | Low-inductance ground return path - must be tied to solid system ground plane with minimal trace length. |
| 3 | I/O2 | ESD-protected signal line input/output - used for Ethernet TX−/RX− or USB D−. |
| 4 | I/O3 | ESD-protected signal line input/output - supports dual differential pair or GPIO protection. |
| 5 | I/O4 | ESD-protected signal line input/output - completes 4-channel protection set; routed adjacent to I/O3 for symmetry. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low capacitance | 2.3pF typical per channel - avoids signal distortion and timing skew in 125MHz Ethernet and 480Mbps USB 2.0 links. |
| Low clamping voltage | 6V at 12A surge - keeps protected PHY ICs within safe operating voltage margins during IEC 61000-4-5 transients. |
| High-speed compatibility | Validated 1-Gbps operation - confirmed via S21 insertion loss ≤0.5dB at 125MHz and ≤3dB at 1GHz. |
| Industrial temperature range | –40°C to +125°C - ensures reliability in uncontrolled environments such as outdoor access points and industrial gateways. |
| Flow-through routing | Pins 1–5 arranged linearly (I/O1–GND–I/O2–I/O3–I/O4) - simplifies PCB layout with straight trace paths and minimal stubs. |
Applications
| Ethernet 1000Base-T Interface | USB 2.0 Data Lines |
|---|---|
Use Scenario: Protecting RJ45 connector-facing PHY differential pairs in enterprise switches and PoE-powered access points exposed to field ESD and induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between connector and PHY IC, providing low-capacitance path to ground during transients without affecting 125MHz symbol rate timing. Use Value: Prevents PHY latch-up or damage from ±8kV IEC 61000-4-2 strikes while maintaining <0.1UI jitter impact due to 2.3pF capacitance. |
Use Scenario: Safeguarding upstream/downstream USB 2.0 D+/D− lines in printers, DVRs, and embedded host controllers connected to external peripherals. IC Role / Device Role / Timing Role: Signal-line ESD suppressor with sub-1ns response, placed at USB connector to shunt ESD energy before reaching USB transceiver. Use Value: Enables full-speed (480Mbps) compliance with zero bit errors under repeated ±15kV contact discharge testing. |
| Industrial GPIO Protection | Network Video Recorder (NVR) Front-Panel I/O |
Use Scenario: Hardening isolated digital control lines (e.g., reset, interrupt, status) in PLCs and motor drives subject to cable-coupled EFT bursts. IC Role / Device Role / Timing Role: Standalone ESD guard for single-ended 3.3V GPIOs, leveraging 4-channel density to protect multiple lines with one device. Use Value: Withstands 80A IEC 61000-4-4 EFT bursts without degradation, eliminating need for discrete RC filters that add latency. |
Use Scenario: Securing front-panel USB, HDMI CEC, and Ethernet management ports on NVR enclosures frequently handled by installers and service personnel. IC Role / Device Role / Timing Role: Multi-interface transient suppressor co-located at enclosure entry points, sharing common GND and minimizing board area. Use Value: Reduces BOM count by consolidating protection for 4 independent high-speed lines into one 2.9mm × 1.6mm footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESDS302DBVR | 2-channel version in identical SOT23-5 package; same electrical specs except reduced channel count. | Used where only two high-speed lines require protection (e.g., single USB 2.0 pair or one Ethernet differential pair). | Select ESDS302DBVR when protecting exactly two signals to minimize cost and routing complexity without sacrificing performance. |
| TPD4E05U06DQAR | 4-channel, 0.5pF lower typical capacitance (1.8pF), but 5.5V clamping at 12A - higher than ESDS304DBVR's 6V. | Better suited for ultra-high-speed SerDes lanes (>3Gbps); less optimal for 1G Ethernet due to tighter voltage margin. | Choose TPD4E05U06DQAR only when sub-2pF capacitance is mandatory and clamping voltage margin allows ≥5.5V. |
Compared with ESDS302DBVR, the ESDS304DBVR delivers double channel density in the same footprint for multi-lane interfaces; versus TPD4E05U06DQAR, it trades 0.5pF lower capacitance for superior 6V clamping headroom critical for 3.6V-tolerant Ethernet PHYs.
Availability
ESDS304DBVR is available at Aetrix Electronics and suitable for Ethernet switches, network video recorders, and industrial gateways requiring stable component supply with guaranteed long-term manufacturability.
Supply support for ESDS304DBVR 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 leader delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, precision, and industrial-grade performance.
The ESDS304DBVR belongs to TI's ESDS30x family of high-speed transient voltage suppressors, engineered specifically for signal-integrity-critical data-line protection in networking, computing, and industrial automation systems.
FAQ
What is the maximum surge current rating for ESDS304DBVR?
The ESDS304DBVR is rated for 12A peak pulse current per IEC 61000-4-5 (8/20μs waveform). This rating applies to each of its four I/O channels independently when referenced to the GND pin (pin 2), and is validated with a clamping voltage of 6V at that current level - ensuring downstream ICs remain within safe operating voltage windows during surge events.
Does ESDS304DBVR support bidirectional signal lines like USB 2.0 differential pairs?
Yes, ESDS304DBVR supports bidirectional high-speed interfaces including USB 2.0. Its unidirectional architecture protects against positive transients on I/O pins relative to GND, and negative transients are clamped via internal diode paths to GND. The 2.3pF capacitance and low dynamic resistance preserve signal symmetry and eye diagram integrity for full-speed USB 2.0 operation up to 480Mbps.
Can ESDS304DBVR be used in automotive applications?
The ESDS304DBVR is specified for industrial temperature range (–40°C to +125°C) and meets AEC-Q200 stress test requirements for passive components, but it is not qualified to AEC-Q100 for active ICs. It may be used in under-hood or infotainment applications where customer qualification confirms suitability - however, TI does not guarantee automotive-grade reliability without additional system-level validation.
What is the recommended PCB layout practice for ESDS304DBVR?
Place ESDS304DBVR as close as possible to the protected connector - ideally within 2mm - with short, direct traces to both I/O pins and GND. Use a solid ground plane beneath the device, avoid vias in protected signal paths, and route I/O1–I/O4 linearly (pins 1,3,4,5) to enable flow-through topology. Thermal relief on GND pad is discouraged; maximize copper area for lowest inductance.
How does ESDS304DBVR compare to older ESD protection devices in terms of leakage current?
ESDS304DBVR delivers 3nA typical leakage current at 3.6V bias - over 10× lower than legacy TVS diodes (e.g., SMAJ series) and comparable to premium low-leakage arrays. This minimizes DC loading on high-impedance receivers and prevents measurable voltage drop across series termination resistors, making it ideal for battery-powered or precision-sensing interfaces where quiescent power matters.
ESDS304DBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 4
- Voltage - Reverse Standoff (Typ):
- 3.6V (Max)
- Voltage - Breakdown (Min):
- 4.5V
- Voltage - Clamping (Max) @ Ipp:
- 3V (Typ)
- Current - Peak Pulse (10/1000µs):
- 12A (8/20µs)
- Power - Peak Pulse:
- 85W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 2.3pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
ESDS304DBVR FAQ
1.How can I place an order for ESDS304DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for ESDS304DBVR 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 ESDS304DBVR reliable?
The price and inventory of ESDS304DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESDS304DBVR is usually 5 days.
3.What payment methods are accepted for ESDS304DBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESDS304DBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESDS304DBVR?
ESDS304DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESDS304DBVR 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 ESDS304DBVR?
For technical support, including ESDS304DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESDS304DBVR requirements.
6.How does Aetrix verify that ESDS304DBVR is sourced from the original manufacturer or authorized distributors?
All ESDS304DBVR 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 ESDS304DBVR meets industry standards.
7.What is the process for return or replacement of ESDS304DBVR?
All ESDS304DBVR units undergo pre-shipment inspection (PSI). If there is an issue with ESDS304DBVR, 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 ESDS304DBVR part is unused and in its original packaging.
Return procedure for ESDS304DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESDS304DBVR Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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