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STMicroelectronics ESDZV18-1BF4TK
- Part No.:
- ESDZV18-1BF4TK
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
ESDZV18-1BF4TK.pdf
- Description:
- TVS DIODE 24VWM 21.5VC ST0201
- Quantity:
- Payment:
- Shipping:
Inventory:9,258
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Product details
Overview
ESDZV18-1BF4TK from STMicroelectronics is a bidirectional single-line TVS diode designed for ESD protection of high-speed data lines in space-constrained portable electronics. It features a 20 V stand-off voltage, 31 V clamping voltage at 16 A TLP, 5 pF typical line capacitance, and 0.7 Ω dynamic resistance - enabling robust ±30 kV air / ±18 kV contact ESD suppression in smartphones and wearables.
For engineers reviewing the ESDZV18-1BF4TK datasheet, ESDZV18-1BF4TK pinout, ESDZV18-1BF4TK application, or ESDZV18-1BF4TK equivalent, key selection criteria include low clamping voltage under IEC 61000-4-2 stress, sub-5 pF capacitance for signal integrity, 0201 footprint compatibility, and ECOPACK2 compliance for RoHS-constrained designs.
Technical Context
This device operates as a snapback-triggered bidirectional TVS, activating above 23 V (typical trigger) and holding below 20 V to ensure reliable off-state isolation. Its low dynamic resistance (0.7 Ω) sustains fast transient energy dissipation without thermal runaway during 8/20 µs surges up to 4.5 A peak pulse current.
The 0201 package integrates symmetric electrode geometry optimized for balanced ESD response polarity and minimal parasitic inductance. Capacitance remains stable below 5 pF across 0–20 V bias, preserving signal fidelity on USB 2.0, I²C, and MIPI D-PHY interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage | 20 V - Ensures no conduction during normal I/O operation up to rated system voltage |
| Clamping Voltage | 31 V at 16 A TLP - Limits transient voltage to safe levels for downstream 1.8 V/3.3 V ICs |
| Line Capacitance | 5 pF max @ 1 MHz - Enables use on 480 Mbps USB 2.0 and 1 Gbps MIPI D-PHY without signal degradation |
| ESD Rating | ±30 kV air / ±18 kV contact per IEC 61000-4-2 Level 4 - Meets highest consumer-grade ESD immunity requirement |
| Dynamic Resistance | 0.7 Ω - Minimizes voltage overshoot during fast ESD events by reducing IR drop |
| Leakage Current | 0.3 µA @ 20 V - Prevents DC loading on battery-powered sensor and touch interfaces |
Pinout & Package
ESDZV18-1BF4TK uses a 2-terminal 0201 surface-mount package (0.58 mm × 0.28 mm × 0.15 mm), with symmetrical anode/cathode terminals enabling bidirectional protection without polarity sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as input/output port; no polarity assignment required for ESD path |
| Terminal 2 | Anode/Cathode (bidirectional) | Completes low-inductance transient shunt path between protected line and ground reference |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low clamping voltage | 31 V at 16 A TLP ensures downstream logic ICs remain within absolute maximum ratings during ESD strike |
| Sub-5 pF line capacitance | 5 pF max preserves rise time and eye diagram integrity on high-speed serial buses |
| 0201 footprint | 0.18 mm² PCB area enables placement adjacent to connectors and IC pads in ultra-thin mobile form factors |
| ECOPACK2 compliance | Meets EU RoHS Directive 2011/65/EU and halogen-free requirements for consumer end-of-life handling |
Applications
| Smartphone Front-Facing Camera Interface | Wireless Earbud Touch Sensor Line |
|---|---|
Use Scenario: Protecting MIPI CSI-2 differential pair from ESD during user handling and assembly. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed directly at FPC connector entry point. Use Value: 5 pF capacitance avoids skew between clock/data lanes; 31 V clamping prevents damage to image sensor's 1.2 V I/O cells. | Use Scenario: Shielding capacitive touch controller I/O from human-body-model ESD in compact earbud housing. IC Role / Device Role / Timing Role: Low-leakage (0.3 µA) ESD clamp on 1.8 V GPIO line with no DC loading impact on baseline capacitance measurement. Use Value: 0201 size allows placement within 0.3 mm of touch pad; ±18 kV contact rating covers worst-case pocket discharge events. |
| Tablet USB-C CC Line Protection | Home Automation Zigbee Module Antenna Feed |
Use Scenario: Safeguarding USB Type-C configuration channel (CC) line against repeated plug/unplug ESD. IC Role / Device Role / Timing Role: Standoff-rated (20 V) TVS ensuring no false toggling during 5 V CC signaling while clamping transients. Use Value: 20 V standoff matches USB PD specification; low dynamic resistance maintains fast response without voltage overshoot. | Use Scenario: Suppressing ESD coupling into 2.4 GHz RF front-end from metal enclosure or user contact. IC Role / Device Role / Timing Role: High-frequency-capable ESD protector placed between antenna feed and RF switch, minimizing insertion loss. Use Value: S21 attenuation < –12 dB above 1 GHz confirms minimal RF signal disruption; 0.18 mm² footprint avoids antenna pattern distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESDZV201-1BF4 | Identical marking variant; same electrical specs and 0201 package per DS13171 Rev 2 | No functional difference - alternate ordering code for same production lot | Select when cross-referencing ST's official documentation or distributor inventory with full part number match |
| TPD1E05U06DPYR | 3.6 V stand-off, 12 V clamping, 0.6 pF capacitance - optimized for lower-voltage I/O | Better suited for 1.8 V/3.3 V logic with tighter voltage margins; not rated for 20 V systems | Choose only if protecting sub-5 V rails where lower clamping and capacitance outweigh stand-off requirement |
Compared with ESDZV18-1BF4TK, ESDZV201-1BF4 is functionally identical and interchangeable, while TPD1E05U06DPYR trades higher stand-off for lower capacitance and clamping - making it unsuitable for 20 V tolerant interfaces but preferable in ultra-low-voltage, high-speed applications.
Availability
ESDZV18-1BF4TK is available at Aetrix Electronics and suitable for smartphone camera modules, wireless audio peripherals, USB-C accessory designs, and IoT sensor nodes requiring stable component supply and rapid prototyping support.
Supply support for ESDZV18-1BF4TK 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 management ICs, sensors, and protection devices for automotive, industrial, and consumer markets.
ESDZV18-1BF4TK belongs to ST's ESDZV ultra-low-clamping TVS family, engineered specifically for high-density portable electronics where board space, signal integrity, and IEC 61000-4-2 Level 4 compliance are non-negotiable.
FAQ
What is the maximum operating temperature for ESDZV18-1BF4TK?
The device supports junction temperatures from –55 °C to +150 °C, validated per absolute maximum ratings in DS13171 Rev 2. This range accommodates reflow soldering peaks up to 245 °C and sustained operation in thermally dense smartphone chassis or wearable enclosures.
Does ESDZV18-1BF4TK require orientation during PCB placement?
No - its symmetrical 2-terminal construction and bidirectional behavior eliminate polarity concerns. The marking 'J' may rotate 90° or 180° per ST's package specification; only the physical terminal positions matter, not silkscreen alignment.
Can ESDZV18-1BF4TK protect USB 3.0 SuperSpeed lines?
No - its 5 pF capacitance and frequency response (S21 > –12 dB at 1 GHz) are validated for USB 2.0 (480 Mbps) and MIPI D-PHY, but insufficient for USB 3.0's 5 Gbps bandwidth and stricter <0.3 pF requirement.
Is lead-free reflow compatible with ESDZV18-1BF4TK's 0201 package?
Yes - ST specifies a peak reflow temperature of 240–245 °C for 2–3 seconds, fully compliant with IPC/JEDEC J-STD-020 Class 3 moisture sensitivity level and standard lead-free profiles. Stencil opening of 75 µm is recommended to control solder volume.
ESDZV18-1BF4TK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 0201 (0603 Metric)
- Series:
- ESDZ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 24V (Max)
- Voltage - Breakdown (Min):
- 18V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V (Typ)
- Current - Peak Pulse (10/1000µs):
- 6A (8/20µs)
- Power - Peak Pulse:
- 140W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 3pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- ST0201
ESDZV18-1BF4TK FAQ
1.How can I place an order for ESDZV18-1BF4TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ESDZV18-1BF4TK 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 ESDZV18-1BF4TK reliable?
The price and inventory of ESDZV18-1BF4TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESDZV18-1BF4TK is usually 5 days.
3.What payment methods are accepted for ESDZV18-1BF4TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESDZV18-1BF4TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESDZV18-1BF4TK?
ESDZV18-1BF4TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESDZV18-1BF4TK 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 ESDZV18-1BF4TK?
For technical support, including ESDZV18-1BF4TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESDZV18-1BF4TK requirements.
6.How does Aetrix verify that ESDZV18-1BF4TK is sourced from the original manufacturer or authorized distributors?
All ESDZV18-1BF4TK 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 ESDZV18-1BF4TK meets industry standards.
7.What is the process for return or replacement of ESDZV18-1BF4TK?
All ESDZV18-1BF4TK units undergo pre-shipment inspection (PSI). If there is an issue with ESDZV18-1BF4TK, 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 ESDZV18-1BF4TK part is unused and in its original packaging.
Return procedure for ESDZV18-1BF4TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESDZV18-1BF4TK Tags
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