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STMicroelectronics ESDALC5-1BT2Y
- Part No.:
- ESDALC5-1BT2Y
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- SOD-882
- Datasheet:
-
ESDALC5-1BT2Y.pdf
- Description:
- TVS DIODE 5VWM 17.5VC SOD882T
- Quantity:
- Payment:
- Shipping:
Inventory:43,304
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Product details
Overview
ESDALC5-1BT2Y from STMicroelectronics is an AEC-Q101-qualified, bidirectional single-line TVS diode for ESD protection of high-speed data lines. It features 5.8 V minimum breakdown voltage, 26 pF capacitance at 0 V, <60 nA leakage at 5 V, ±30 kV IEC 61000-4-2 contact/air discharge rating, and SOD882T (0402) package. It is deployed in automotive infotainment interfaces and USB 2.0 ports where low capacitance and space-constrained PCB layouts are critical.
For engineers reviewing the ESDALC5-1BT2Y datasheet, ESDALC5-1BT2Y pinout, ESDALC5-1BT2Y application, or ESDALC5-1BT2Y equivalent, this page delivers verified electrical specs, real-world clamping behavior, PCB assembly guidance per DS10142 Rev 2, and validated alternatives for ESD-sensitive I/O protection in automotive and portable electronics.
Technical Context
This device operates as a monolithic silicon avalanche diode with symmetrical bidirectional conduction-triggering at ≥5.8 V in either polarity to clamp transients before downstream ICs sustain damage. Its low dynamic resistance (0.23–0.25 Ω) ensures rapid voltage suppression during 8/20 µs pulses up to 9 A peak current.
Designed specifically for high-frequency signal integrity, it maintains ≤26 pF input capacitance at 0 V bias and exhibits flat CV vs. VR response, minimizing signal distortion on USB, HDMI, or CAN FD data lines while meeting ISO 7637-3 pulse 3a (−150 V) and 3b (+100 V) requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 5.8 V min. (IR = 1 mA, reverse direction); ensures reliable triggering before 5 V logic rails exceed safe margins |
| Clamping Voltage (VCL) | 12.5 V max. (IEC 61000-4-2, 30 kV contact); limits transient overvoltage seen by protected IC to safe level |
| Capacitance (CLINE) | 26 pF typ. at 0 V, 1 MHz; preserves signal rise/fall times on 480 Mbps USB 2.0 lines without measurable jitter |
| Leakage Current (IRM) | <60 nA at 5 V; avoids DC loading on high-impedance sensor or analog front-end inputs |
| Peak Pulse Power | 150 W (8/20 µs); sustains multiple ESD events without degradation under automotive-grade stress profiles |
| Dynamic Resistance (RD) | 0.23–0.25 Ω; enables fast energy shunting with minimal IR drop during nanosecond-scale transients |
| ESD Rating | ±30 kV air & contact (IEC 61000-4-2); exceeds Level 4 immunity for passenger cabin electronics |
Pinout & Package
SOD882T (0402) surface-mount package: 0.6 mm² footprint, 0.40 mm height, lead-free and ECOPACK2-compliant. Dimensions per DS10142 Rev 2: L1/L2 = 0.45–0.55 mm, D = 0.95–1.05 mm, E = 0.55–0.65 mm, e = 0.60–0.70 mm, b1/b2 = 0.20–0.30 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode (bidirectional) | Common connection point for symmetrical avalanche conduction; ties to protected I/O line |
| Pin 2 | Cathode (bidirectional) | Second terminal forming low-inductance path to GND or reference plane; no polarity dependency |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Matched VBR (5.8 V min.) and VCL (12.5/17.5 V) in both polarities enables single-device protection of AC-coupled or differential lines |
| Low dynamic resistance | 0.23–0.25 Ω minimizes voltage overshoot during fast-rising ESD pulses, improving margin for 3.3 V/5 V interface ICs |
| AEC-Q101 qualification | Validated for automotive temperature range (−50 °C to +125 °C) and mechanical shock/vibration per JESD22-B103/B111 |
| Monolithic integration | Single-die construction eliminates bond wire inductance and inter-die mismatch, ensuring repeatable clamping performance across production lots |
Applications
| Automotive Infotainment Display Interface | USB 2.0 OTG Port Protection |
|---|---|
Use Scenario: Protecting MIPI D-PHY lanes between head unit SoC and LCD display module against ESD during service access or connector mating. IC Role / Device Role / Timing Role: Bidirectional transient suppressor placed directly at connector entry point, operating in parallel with 50 Ω transmission line. Use Value: 26 pF capacitance avoids signal integrity loss at 800 Mbps; ±30 kV rating covers worst-case service ESD per ISO 10605. | Use Scenario: Safeguarding USB 2.0 D+/D− lines in vehicle-mounted smartphone cradle against user-hand ESD and hot-plug transients. IC Role / Device Role / Timing Role: Low-capacitance TVS placed adjacent to USB receptacle, clamping within 1 ns to prevent PHY latch-up. Use Value: Sub-13 V clamping at 9 A peak current prevents VDDIO overvoltage on USB transceivers; SOD882T footprint fits tight connector keepouts. |
| Industrial CAN FD Node Protection | Medical Handheld Touchscreen I/O |
Use Scenario: Shielding CAN FD transceiver pins (CANH/CANL) from ESD induced by operator gloves or cable handling in factory automation panels. IC Role / Device Role / Timing Role: Line-to-line TVS configured across differential pair, leveraging symmetrical breakdown to avoid common-mode skew. Use Value: 0.25 Ω RD ensures <1 ns response time; −150 V/100 V ISO 7637-3 pulse 3a/3b compliance protects against load dump coupling. | Use Scenario: Securing capacitive touch controller I/O pins (SCL/SDA, INT, RESET) in battery-powered diagnostic devices exposed to clinical ESD environments. IC Role / Device Role / Timing Role: Standoff voltage (5.8 V min.) aligns with 3.3 V I/O rail; bidirectional operation handles floating or pulled-up signal states. Use Value: <60 nA leakage preserves battery life over multi-year deployment; AEC-Q101 reliability ensures >10-year field MTBF. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD8351MUTAG (ON Semiconductor) | Higher capacitance (35 pF), lower VBR (5.0 V min.), same SOD-523 package | Less suitable for >480 Mbps interfaces; better for 100 Mbps I²C/SPI due to lower trigger voltage | Select when lower clamping threshold is prioritized over bandwidth preservation |
| TPD2E001DRYR (Texas Instruments) | Lower capacitance (12 pF), dual-line configuration, 5-pin SOT-553 package | Requires two lines per device; not pin-compatible; higher board area but superior HF performance | Choose for ultra-high-speed USB 3.0 or MIPI CSI-2 where sub-15 pF is mandatory |
Compared with ESD8351MUTAG and TPD2E001DRYR, ESDALC5-1BT2Y uniquely balances 26 pF capacitance, AEC-Q101 qualification, and 0402 footprint-making it optimal for cost-sensitive, space-constrained automotive USB and display interfaces requiring proven ±30 kV robustness.
Availability
ESDALC5-1BT2Y is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial CAN FD nodes, and medical handheld touchscreen interfaces requiring stable component supply across extended product lifecycles.
Supply support for ESDALC5-1BT2Y 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, designing and manufacturing microcontrollers, power ICs, sensors, and protection devices for automotive, industrial, and consumer markets.
ESDALC5-1BT2Y belongs to ST's Transil™ TVS portfolio-engineered specifically for high-reliability ESD suppression in automotive-grade data interfaces where low capacitance, fast response, and AEC-Q101 validation are non-negotiable.
FAQ
What is the maximum clamping voltage under IEC 61000-4-2 30 kV contact discharge?
The ESDALC5-1BT2Y clamps to 12.5 V (max.) in the reverse direction and 17.5 V (max.) in the forward direction during 30 kV contact discharge per IEC 61000-4-2. These values were measured at 30 ns after pulse initiation and reflect worst-case performance across production lots at 25 °C ambient.
Does this device require external biasing or series impedance for proper operation?
No. The ESDALC5-1BT2Y operates passively as a voltage-triggered avalanche diode and requires no external bias, control signals, or series resistors. It is connected directly across the protected line and ground (or differential pair), relying solely on its intrinsic breakdown characteristics to activate during transients.
Can ESDALC5-1BT2Y be used on 5 V tolerant GPIOs without risk of premature conduction?
Yes. With a minimum breakdown voltage of 5.8 V at 1 mA test current, the device remains fully non-conductive below normal 5 V rail operation-including tolerances and ripple-ensuring zero leakage impact on system power budget while providing robust protection above that threshold.
How does the SOD882T package affect thermal performance during repetitive ESD events?
The SOD882T's monolithic silicon die and low thermal resistance (junction-to-ambient ≈ 320 °C/W) allow dissipation of 150 W peak pulses without exceeding 125 °C junction temperature, provided PCB copper area meets ST's recommended 0.5 mm² thermal pad per pin. Repetitive 1 Hz pulses are supported per DS10142 Figure 4.
ESDALC5-1BT2Y Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- SOD-882
- Series:
- *
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 5.8V
- Voltage - Clamping (Max) @ Ipp:
- 17.5V
- Current - Peak Pulse (10/1000µs):
- 9A (8/20µs)
- Power - Peak Pulse:
- 150W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 26pF @ 1MHz
- Operating Temperature:
- -50°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-882T
ESDALC5-1BT2Y FAQ
1.How can I place an order for ESDALC5-1BT2Y through Aetrix?
Please submit a Request for Quotation (RFQ) for ESDALC5-1BT2Y 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 ESDALC5-1BT2Y reliable?
The price and inventory of ESDALC5-1BT2Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESDALC5-1BT2Y is usually 5 days.
3.What payment methods are accepted for ESDALC5-1BT2Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESDALC5-1BT2Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESDALC5-1BT2Y?
ESDALC5-1BT2Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESDALC5-1BT2Y 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 ESDALC5-1BT2Y?
For technical support, including ESDALC5-1BT2Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESDALC5-1BT2Y requirements.
6.How does Aetrix verify that ESDALC5-1BT2Y is sourced from the original manufacturer or authorized distributors?
All ESDALC5-1BT2Y 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 ESDALC5-1BT2Y meets industry standards.
7.What is the process for return or replacement of ESDALC5-1BT2Y?
All ESDALC5-1BT2Y units undergo pre-shipment inspection (PSI). If there is an issue with ESDALC5-1BT2Y, 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 ESDALC5-1BT2Y part is unused and in its original packaging.
Return procedure for ESDALC5-1BT2Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESDALC5-1BT2Y Tags
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