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onsemi ESD7421N2T5G
- Part No.:
- ESD7421N2T5G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- 2-XDFN
- Datasheet:
-
ESD7421N2T5G.pdf
- Description:
- TVS DIODE 5VWM 38.1VC 2XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,226
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Product details
Overview
ESD7421N2T5G from onsemi is a bidirectional ESD protection diode in XDFN2 (SOD-882) package, rated for ±12 kV contact and ±15 kV air IEC 61000-4-2 Level 4 ESD immunity, with 0.3 pF junction capacitance, 100 nA reverse leakage at 5 V, and clamping voltage of 35 V at ±8 A TLP. It protects high-speed data lines in space-constrained mobile and automotive sensor interfaces.
For engineers reviewing the ESD7421N2T5G datasheet, pinout, applications, or equivalent options, key selection criteria include low-capacitance signal integrity preservation, sub-1 ns response time for transient suppression, bidirectional clamping symmetry, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The ESD7421N2T5G implements a dual-rail, bidirectional TVS structure with separate anode-cathode paths between each I/O pin and ground, enabling symmetrical clamping for both positive and negative transients. Its low 0.3 pF capacitance minimizes signal distortion on USB 2.0, HDMI, and MIPI D-PHY lines up to 480 Mbps.
Clamping behavior is characterized under IEC 61000-4-2 (±8 kV contact) and TLP (±8 A/±16 A), delivering 35 V and −21 V clamping respectively - critical for safeguarding 3.3 V and 5 V logic interfaces without overvoltage damage to downstream ICs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | ±12 kV contact / ±15 kV air per IEC 61000-4-2 Level 4 - meets highest system-level ESD immunity requirement for handheld and automotive electronics |
| Junction Capacitance | 0.3 pF at 0 V, 1 MHz - preserves signal integrity on high-speed interfaces (e.g., USB 2.0, eMMC) without added jitter or rise-time degradation |
| Clamping Voltage | 35 V at +8 A TLP, −21 V at −8 A TLP - limits transient voltage below 3.3 V IC absolute maximum ratings during fast ESD events |
| Reverse Leakage | 100 nA at VRWM = 5 V - avoids DC loading on battery-powered sensor I/O lines and maintains low quiescent power |
| Response Time | < 1 ns - activates before ESD pulse peak reaches protected circuitry, preventing latch-up or gate oxide rupture |
| Working Voltage | 5 V (Pin 1–GND), 16 V (Pin 2–GND) - supports dual-rail protection for asymmetric supply domains like I²C with pull-up to 5 V and MCU I/O at 3.3 V |
Pinout & Package
XDFN2 (SOD-882) package: 1.0 mm × 0.6 mm, 0.65 mm pitch, 2-terminal surface-mount device with exposed thermal pad (Case 711AM). Pin 1 and Pin 2 are I/O terminals; no dedicated ground pin - GND connection is external via PCB trace.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | I/O Terminal (Anode/Cathode) | Bidirectional ESD path to GND; connects to protected signal line (e.g., USB D+, MIPI DATA+) |
| Pin 2 | I/O Terminal (Anode/Cathode) | Bidirectional ESD path to GND; connects to second protected signal line or shared GND return path |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Clamping | Enables single-device protection of differential pairs or independent I/O lines without polarity constraints |
| AEC-Q101 Qualified | Validated for automotive sensor modules and infotainment systems requiring zero-failure field reliability |
| Pb-Free / RoHS Compliant | Meets global environmental compliance mandates and lead-free reflow soldering profiles (260 °C, 10 s) |
| Low-Leakage Design | 100 nA max reverse current ensures minimal impact on battery life in always-on sensor nodes |
Applications
| USB 2.0 Interface Protection | Automotive Camera Sensor Interface |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports in smartphones and portable media players against user-handling ESD. IC Role / Device Role / Timing Role: Standalone ESD suppressor placed directly at connector, shunting transients before they reach USB transceiver PHY. Use Value: 0.3 pF capacitance prevents signal integrity loss at 480 Mbps; ±12 kV contact rating exceeds IEC 61000-4-2 compliance margin for consumer devices. | Use Scenario: Shielding MIPI CSI-2 data lanes between image sensor and SoC in ADAS camera modules exposed to vehicle-level ESD stress. IC Role / Device Role / Timing Role: Dual-rail ESD clamp on each data lane pair, leveraging symmetric clamping to maintain differential signal fidelity. Use Value: AEC-Q101 qualification ensures operation across −40 °C to +125 °C ambient; low leakage avoids bias shift in analog front-end circuits. |
| Infotainment Touchscreen I²C Bus | Digital Audio Interface (I²S) |
Use Scenario: Safeguarding SDA/SCL lines of capacitive touchscreen controllers in automotive infotainment head units. IC Role / Device Role / Timing Role: Low-capacitance protector on bidirectional I²C bus operating at 400 kHz, placed adjacent to controller and display IC. Use Value: 5 V working voltage matches typical I²C pull-up rail; 100 nA leakage prevents bus contention and false ACK/NACK errors. | Use Scenario: Protecting I²S word clock (BCLK), left/right clock (LRCLK), and data (SD) lines in Bluetooth audio receivers and smart speakers. IC Role / Device Role / Timing Role: Point-of-entry ESD clamp on each I²S signal, minimizing added capacitance to preserve edge timing and reduce jitter. Use Value: Sub-1 ns response ensures clamping activation prior to 10 ns rise time of ESD pulses, preventing bit errors in 1.411 MHz BCLK domains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2E001DRYR | 0.8 pF capacitance, 12 V working voltage, ±8 kV IEC 61000-4-2 rating | Higher capacitance limits use to ≤100 Mbps interfaces; lower ESD rating suits industrial but not automotive Grade 4 environments | Prefer when cost sensitivity outweighs high-speed performance and automotive qualification is unnecessary |
| ESD9X5.0ST5G | Unidirectional configuration, 5.0 V working voltage, 0.4 pF capacitance, ±12 kV contact rating | Requires separate devices per signal direction; unsuitable for bidirectional buses like I²C or USB without redesign | Select only for unidirectional DC-coupled lines where polarity is fixed and board area allows extra components |
Compared with TPD2E001DRYR and ESD9X5.0ST5G, the ESD7421N2T5G uniquely delivers bidirectional clamping, automotive qualification, and lowest capacitance in its class - making it optimal for space-constrained, high-reliability, high-speed interface protection where signal fidelity and AEC-Q101 compliance are mandatory.
Availability
ESD7421N2T5G is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive camera sensor interfaces, and infotainment touchscreen I²C buses requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for ESD7421N2T5G 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The ESD7421N2T5G belongs to onsemi's Micro-Packaged ESD Protection Diode family, engineered specifically for ultra-low-capacitance, high-reliability transient suppression in miniaturized mobile and automotive electronics.
FAQ
What is the maximum working voltage supported by ESD7421N2T5G on each terminal?
The ESD7421N2T5G supports 5 V peak reverse voltage on Pin 1 to GND and 16 V on Pin 2 to GND, enabling asymmetric protection configurations - for example, protecting a 3.3 V I/O line referenced to a 5 V domain while maintaining headroom against overshoot. This dual-voltage rating is verified per electrical characteristics table in the official datasheet.
Is ESD7421N2T5G qualified for automotive applications?
Yes, ESD7421N2T5G is AEC-Q101 qualified and PPAP capable, with full test documentation per automotive stress standards. It operates across −55 °C to +150 °C junction temperature range and is used in production automotive sensors and infotainment systems. The SZ prefix variant (SZESD7421N2T5G) denotes enhanced automotive traceability and control.
Does ESD7421N2T5G require a dedicated ground pin?
No, ESD7421N2T5G has only two terminals (Pin 1 and Pin 2), both serving as bidirectional I/O paths to an external PCB ground plane. There is no internal or dedicated ground pin - effective grounding relies on low-inductance PCB layout with short traces to solid ground copper beneath the device.
How does the 0.3 pF capacitance of ESD7421N2T5G affect USB 2.0 signal integrity?
The 0.3 pF junction capacitance of ESD7421N2T5G introduces negligible impedance change at 480 MHz (USB 2.0 fundamental), resulting in <0.5% rise-time degradation and no measurable eye-diagram closure in standard FR-4 layouts. This enables direct placement at USB connectors without equalization or retiming overhead.
What is the clamping voltage of ESD7421N2T5G under IEC 61000-4-2 ±8 kV contact discharge?
Per Figure 2 and Figure 3 in the official datasheet, the ESD7421N2T5G clamps to approximately +25 V and −20 V during IEC 61000-4-2 ±8 kV contact discharge events (Pin 1 to GND, GND connected to Pin 2). These waveforms confirm sub-30 V clamping - well below the 3.6 V absolute maximum rating of most 3.3 V logic ICs.
ESD7421N2T5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- 2-XDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 38.1V
- Current - Peak Pulse (10/1000µs):
- 16A (100ns)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 0.3pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-XDFN (1x0.6) (SOD-882)
ESD7421N2T5G FAQ
1.How can I place an order for ESD7421N2T5G through Aetrix?
Please submit a Request for Quotation (RFQ) for ESD7421N2T5G 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 ESD7421N2T5G reliable?
The price and inventory of ESD7421N2T5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESD7421N2T5G is usually 5 days.
3.What payment methods are accepted for ESD7421N2T5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESD7421N2T5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESD7421N2T5G?
ESD7421N2T5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESD7421N2T5G 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 ESD7421N2T5G?
For technical support, including ESD7421N2T5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESD7421N2T5G requirements.
6.How does Aetrix verify that ESD7421N2T5G is sourced from the original manufacturer or authorized distributors?
All ESD7421N2T5G 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 ESD7421N2T5G meets industry standards.
7.What is the process for return or replacement of ESD7421N2T5G?
All ESD7421N2T5G units undergo pre-shipment inspection (PSI). If there is an issue with ESD7421N2T5G, 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 ESD7421N2T5G part is unused and in its original packaging.
Return procedure for ESD7421N2T5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESD7421N2T5G Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
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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D5V0L1B2WS-7
Diodes Incorporated
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