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STMicroelectronics ESDA5WY
- Part No.:
- ESDA5WY
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
ESDA5WY.pdf
- Description:
- AUTOMOTIVE DUAL-LINE UNIDIRECT
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
ESDA5WY from STMicroelectronics is an automotive-grade unidirectional dual-line transient voltage suppressor (TVS) diode designed for ESD and EOS protection on low-speed DC signal and power lines. It features a 5.5 V reverse stand-off voltage, <50 nA leakage at VRM, 14.0 V clamping voltage at 16 A TLP, 30 kV air discharge ESD rating per ISO 10605 (C = 150 pF, R = 330 Ω), and operates up to +175 °C junction temperature - deployed in MCU I/O protection, switch debouncing, and I²C bus line safeguarding.
For engineers reviewing the ESDA5WY datasheet, ESDA5WY pinout, ESDA5WY application, or ESDA5WY equivalent, key selection criteria include its dual-cathode SOT323-3L layout, low 4.8 pF line capacitance, fast turn-on response under ±30 kV ESD stress, and compliance with ISO 7637-3 Pulse 3a/b (±150 V) and Pulse 2a (±85 V) for automotive electronics robustness.
Technical Context
The ESDA5WY implements a silicon avalanche-based unidirectional TVS structure with common-anode configuration across two independent I/O paths, enabling simultaneous protection of two signal/power lines referenced to GND. Its triggering voltage (6.0–10.0 V) ensures reliable turn-on before system-level damage thresholds, while the 0.59 Ω dynamic resistance minimizes voltage overshoot during 8/20 µs surge events.
Designed specifically for harsh automotive environments, it meets AEC-Q101 qualification and supports full PPAP documentation. Its thermal stability is reinforced by a 3.5 × 10⁻⁴/°C voltage temperature coefficient and operation over −55 °C to +175 °C junction range - critical for under-hood and infotainment module deployments where ambient thermal cycling exceeds 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Stand-off Voltage (VRM) | 5.5 V - Maximum continuous operating voltage before leakage rises significantly; sets upper limit for protected line voltage. |
| Clamping Voltage (VCL) | 14.0 V at 16 A TLP - Peak voltage seen by downstream IC during ESD event; ensures safe margin below typical 16–18 V MCU I/O absolute max ratings. |
| ESD Withstand (ISO 10605) | ±30 kV air / >±20 kV contact - Validated immunity level for automotive assembly and service handling per C = 150 pF, R = 330 Ω test setup. |
| Line Capacitance (CI/O–GND) | 4.0–4.8 pF at 1 MHz - Enables use on I²C, SPI, and button lines without signal integrity degradation or timing skew. |
| Peak Pulse Power (8/20 µs) | 175 W - Sustains high-energy transients such as load dump-induced surges in 12 V automotive systems. |
| Junction Temperature Range | −55 °C to +175 °C - Supports placement near heat sources (e.g., power modules, engine control units) without derating. |
| Dynamic Resistance (Rd) | 0.59 Ω - Low impedance path during clamping reduces voltage overshoot and improves energy dissipation efficiency. |
Pinout & Package
SOT323-3L (JEDEC SC-70) package: 2.1 mm × 2.0 mm footprint, 0.65 mm pitch, lead-free, UL94 V0 rated epoxy, MSL Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | I/O1 Cathode | Protected input/output line 1 - connects to sensitive node (e.g., MCU GPIO); cathode orientation enables unidirectional clamping to GND. |
| 2 | I/O2 Cathode | Protected input/output line 2 - independent second channel for dual-line protection (e.g., I²C SDA/SCL or switch pair). |
| 3 | GND | Common anode reference - must be low-inductance connection to system ground plane to ensure effective clamping performance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified & PPAP capable | Validated for automotive production use with full traceability, reliability testing, and manufacturing process control documentation. |
| Dual-line unidirectional protection | Two independent cathode terminals share one GND anode - eliminates need for two discrete TVS devices and saves PCB area. |
| Low 4.8 pF line capacitance | Preserves signal rise/fall times on data buses up to 1 MHz; avoids false triggering or communication errors on I²C/SPI. |
| 175 W peak pulse power (8/20 µs) | Handles ISO 7637-3 Pulse 2a (±85 V) and Pulse 3a/b (±150 V) without degradation - suitable for body control module and lighting ECU interfaces. |
| −55 °C to +175 °C operating range | Enables direct mounting on power boards or near engine compartments without external thermal management. |
Applications
| MCU I/O Protection | Automotive Switch Debouncing |
|---|---|
Use Scenario: Protecting microcontroller GPIO pins connected to vehicle door switches, seat position sensors, or HVAC controls exposed to ESD during service. IC Role / Device Role / Timing Role: Unidirectional TVS clamp limiting transient voltage to ≤14.0 V during ±30 kV air discharge events. Use Value: Prevents latch-up or permanent gate oxide damage in 3.3 V/5 V MCUs while maintaining <50 nA standby leakage. | Use Scenario: Suppressing bounce-induced transients and ESD on mechanical push-button inputs in center console or steering wheel assemblies. IC Role / Device Role / Timing Role: Dual-channel cathode clamp absorbing contact ESD (>±20 kV) and switching noise without affecting logic threshold detection. Use Value: Eliminates need for RC filters or firmware debouncing delays, reducing BOM count and improving real-time response. |
| I²C Bus Line Protection | MOSFET Gate Protection |
Use Scenario: Safeguarding bidirectional I²C lines (SDA/SCL) between automotive camera module and ADAS processor against ESD coupling via FAKRA connectors. IC Role / Device Role / Timing Role: Low-capacitance (4.8 pF) dual-cathode TVS preserving signal integrity at 400 kHz clock rate while clamping to 14.0 V. Use Value: Maintains I²C timing margins and prevents bus lockup during hot-plug or service ESD events without adding series resistance. | Use Scenario: Shielding N-channel MOSFET gates driving solenoids or relays in transmission control units from inductive kickback and ESD. IC Role / Device Role / Timing Role: Fast-turn-on TVS shunting gate-source voltage spikes before reaching MOSFET VGS(max) rating (typically ±20 V). Use Value: Avoids gate oxide breakdown and unintended turn-on during load dump or relay coil de-energization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-line unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESDA14WY | Higher VRM (12 V), higher clamping (17.5 V at 13 A), 125 pF capacitance | Targeted at 12 V power rail or LIN bus protection, not low-voltage signal lines | Select when protecting 12 V sensor inputs or CAN-LIN hybrid interfaces requiring higher stand-off voltage. |
| TPD2E001DRYR | Single-channel, 5.5 V VRM, 12 V clamping, 3.5 pF, SOT-5X3 package | Lacks dual-line integration; requires two devices for same function; lower surge rating (120 W) | Choose only if board space allows separate placement and lower surge immunity (12 kV ESD) is acceptable. |
Compared with ESDA14WY and TPD2E001DRYR, ESDA5WY delivers optimal balance of low-voltage signal compatibility (5.5 V VRM), ultra-low capacitance (4.8 pF), and automotive-grade surge resilience (175 W, ±30 kV) in a single dual-line SOT323-3L package - making it uniquely suited for space-constrained, low-speed automotive I/O protection.
Availability
ESDA5WY is available at Aetrix Electronics and suitable for automotive body electronics, infotainment interface design, and ADAS sensor interface applications requiring stable component supply across extended temperature and ESD stress conditions.
Supply support for ESDA5WY 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power management solutions with vertical manufacturing and broad IP portfolio.
The ESDAxxWY series belongs to ST's automotive transient protection product line, engineered specifically to replace MOVs and Zeners in harsh-environment ESD/EOS suppression - emphasizing reliability, zero performance drift, and AEC-Q101 compliance.
FAQ
What is the maximum continuous reverse voltage ESDA5WY can withstand without conduction?
The ESDA5WY has a reverse stand-off voltage (VRM) of 5.5 V - meaning it remains in high-impedance state with <50 nA leakage current when biased up to this voltage. Exceeding 5.5 V risks premature triggering; system design must ensure nominal line voltage stays within this limit during normal operation.
Can ESDA5WY protect both I²C SDA and SCL lines simultaneously?
Yes - its dual-cathode architecture (Pin 1 = SDA cathode, Pin 2 = SCL cathode, Pin 3 = shared GND) allows independent clamping of both bidirectional I²C lines to ground. With only 4.8 pF capacitance per line, it preserves signal integrity at standard-mode (100 kHz) and fast-mode (400 kHz) speeds without timing distortion.
How does ESDA5WY perform under ISO 7637-3 Pulse 3a (−150 V) stress?
Per DS14779 Figure 21, ESDA5WY clamps −150 V Pulse 3a transients to <−12 V at the protected node with sub-50 ns response. Its 175 W peak power rating and low dynamic resistance (0.59 Ω) ensure no degradation after repeated pulses - validated for automotive body electronics with long-term reliability.
Is ESDA5WY compatible with lead-free reflow soldering processes?
Yes - it uses an ECOPACK2 RoHS-compliant SOT323-3L package rated for MSL Level 1 and qualified for peak reflow temperatures up to 245 °C. ST recommends a ramp-to-spike profile with 60–90 s above 217 °C and controlled cooling (−2 °C/s) per J-STD-020, as detailed in DS14779 Section 3.6.
ESDA5WY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- SC-70, SOT-323
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 12A (8/20µs)
- Power - Peak Pulse:
- 175W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- 4pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323-3
ESDA5WY FAQ
1.How can I place an order for ESDA5WY through Aetrix?
Please submit a Request for Quotation (RFQ) for ESDA5WY 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 ESDA5WY reliable?
The price and inventory of ESDA5WY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESDA5WY is usually 5 days.
3.What payment methods are accepted for ESDA5WY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESDA5WY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESDA5WY?
ESDA5WY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESDA5WY 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 ESDA5WY?
For technical support, including ESDA5WY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESDA5WY requirements.
6.How does Aetrix verify that ESDA5WY is sourced from the original manufacturer or authorized distributors?
All ESDA5WY 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 ESDA5WY meets industry standards.
7.What is the process for return or replacement of ESDA5WY?
All ESDA5WY units undergo pre-shipment inspection (PSI). If there is an issue with ESDA5WY, 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 ESDA5WY part is unused and in its original packaging.
Return procedure for ESDA5WY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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