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Nexperia USA Inc. PESD5Z3.3-QX
- Part No.:
- PESD5Z3.3-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
PESD5Z3.3-QX.pdf
- Description:
- PESD5Z3.3-Q/SOD523/SC-79
- Quantity:
- Payment:
- Shipping:
Inventory:6,391
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Product details
Overview
PESD5Z3.3-QX from Nexperia is a low-capacitance unidirectional ESD protection diode in SOD523 (SC-79) package, designed to protect single high-speed signal lines against IEC 61000-4-2 ESD (±30 kV contact) and IEC 61000-4-5 surge (20 A, 8/20 µs). Key specs: 3.3 V reverse standoff voltage, 172 pF typical capacitance at 1 MHz, 8 V clamping voltage at 5 A, 8 nA leakage at 3.3 V, and AEC-Q101 qualified for automotive use.
For engineers reviewing the PESD5Z3.3-QX datasheet, PESD5Z3.3-QX pinout, PESD5Z3.3-QX application, or PESD5Z3.3-QX equivalent, this page delivers verified electrical parameters, validated automotive qualification status, confirmed SOD523 footprint compatibility, and real-world clamping behavior under 8/20 µs surge and ±8 kV ESD pulses - critical for USB, Ethernet, and SIM card interface protection design.
Technical Context
This unidirectional TVS diode operates as a clamping device between anode (pin 2) and cathode (pin 1), triggering at ~5 V breakdown (IR = 1 mA) and limiting transient voltages to ≤18 V at 20 A surge. Its low 172 pF capacitance ensures minimal signal distortion on lines up to 1 Gbit/s.
The device uses silicon avalanche junction technology with differential resistance of ≤10 Ω, enabling fast response (<1 ns) to ESD events per IEC 61000-4-2. Thermal derating follows standard exponential decay: peak pulse power drops to 40% at 125 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage | 3.3 V - Maximum continuous DC voltage the line can carry without diode conduction; sets upper limit for protected signal swing. |
| Clamping Voltage (5 A) | 8 V - Voltage across diode during 5 A 8/20 µs surge; determines maximum stress imposed on downstream IC input. |
| Diode Capacitance | 172 pF @ 1 MHz, 0 V - Low enough to avoid signal integrity degradation on USB 2.0 or 100BASE-TX lines. |
| ESD Withstand | ±30 kV contact discharge (IEC 61000-4-2) - Validated immunity level for direct human touch events on exposed connectors. |
| Peak Pulse Power | 260 W @ 25 °C - Sustains short-duration surges without thermal runaway; derates to 104 W at 125 °C. |
| Leakage Current | 8 nA @ 3.3 V - Negligible loading on low-power sensor or logic interfaces; avoids battery drain in portable systems. |
| Breakdown Voltage | 5 V @ 1 mA - Threshold where avalanche conduction begins; provides margin above 3.3 V rail while avoiding false triggering. |
Pinout & Package
SOD523 (SC-79) ultra-small surface-mount plastic package: 1.2 mm × 0.8 mm × 0.6 mm body, flat lead, cathode band marking. Compatible with standard reflow profiles and automated placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to system ground or low-impedance return path; carries surge current during positive transients on protected line. |
| 2 | Anode (A) | Connected to signal line requiring protection; forms unidirectional clamp to ground when voltage exceeds VRWM + VBR margin. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HBM ESD, and high-temp operating life - enables use in infotainment and ADAS interfaces. |
| Low 172 pF capacitance | Preserves signal rise/fall times on high-speed lines (e.g., USB D+/D−, HDMI CEC, MIPI D-PHY) without added jitter or reflection. |
| 8 V clamping at 5 A | Ensures protected IC inputs (e.g., USB PHY, Ethernet MAC) remain below absolute maximum ratings during common-mode ESD events. |
| 8 nA leakage at 3.3 V | Eliminates measurable current draw in always-on circuits like SIM card detection or wake-on-LAN control lines. |
| 20 A surge rating (8/20 µs) | Withstands lightning-induced surges on industrial Ethernet ports or automotive LIN bus nodes without degradation. |
Applications
| USB 2.0 Interface Protection | Automotive Infotainment Display Link |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 host/device ports against ESD from user insertion/removal. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed directly at USB connector, shunting transients to chassis ground before reaching USB transceiver. Use Value: 172 pF capacitance avoids signal integrity loss at 480 Mbps; 8 V clamping prevents damage to internal PHY ESD structures rated ≤12 V. |
Use Scenario: Shielding LVDS or FPD-Link video data lanes in automotive center-stack displays from cable-discharge events. IC Role / Device Role / Timing Role: Per-lane ESD suppressor mounted adjacent to display connector, referenced to vehicle chassis ground. Use Value: AEC-Q101 qualification ensures operation across −40 °C to +125 °C ambient; 30 kV ESD rating covers worst-case service technician handling. |
| SIM Card Slot Protection | 100BASE-TX Ethernet PHY Interface |
Use Scenario: Guarding SIM VCC, I/O, and CLK pins against ESD during hot-swap insertion in mobile hotspots or telematics modules. IC Role / Device Role / Timing Role: One-diode-per-signal configuration with cathodes tied to common ground plane near SIM socket. Use Value: 8 nA leakage preserves battery life in always-connected IoT devices; small SOD523 footprint fits tight space constraints around nano-SIM sockets. |
Use Scenario: Protecting MDI pins of Ethernet PHY ICs from ESD induced by Ethernet cable handling in industrial gateways. IC Role / Device Role / Timing Role: Bidirectional protection implemented using two PESD5Z3.3-QX diodes (anode-to-ground and cathode-to-ground) per differential pair. Use Value: 20 A surge rating meets IEC 61000-4-5 Level 3 requirements; low capacitance avoids skew between TX+/TX− signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NUP4105MR6T1G | Higher 25 pF capacitance; dual-channel; 12 V clamping at 5 A; 5.5 V standoff. | Better suited for lower-speed lines (e.g., UART, I²C); not AEC-Q101 qualified. | Select when multi-line integration reduces PCB area more than capacitance penalty matters. |
| Vishay ESDBL5V3D1W | Lower 120 pF capacitance; same 3.3 V standoff; 10 V clamping at 5 A; AEC-Q101 qualified. | Superior for >1 Gbit/s interfaces (e.g., USB 3.0 SS, PCIe Gen1); higher cost and longer lead time. | Choose when signal integrity at ≥1 GHz dominates over cost and availability constraints. |
Compared with NUP4105MR6T1G, PESD5Z3.3-QX offers tighter clamping and automotive qualification but requires discrete placement per line; versus ESDBL5V3D1W, it trades 52 pF lower capacitance for higher cost and less common sourcing - making it optimal for cost-sensitive automotive USB or Ethernet designs where 172 pF is acceptable.
Availability
PESD5Z3.3-QX is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial Ethernet gateways, and portable consumer electronics requiring stable component supply with guaranteed long-term traceability.
Supply support for PESD5Z3.3-QX 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in ESD protection, MOSFETs, and bipolar transistors.
The PESD5Z series targets high-speed interface protection in automotive and portable electronics, emphasizing low capacitance, AEC-Q101 compliance, and robust IEC 61000-4-2/4-5 performance in ultra-compact packages.
FAQ
Is PESD5Z3.3-QX suitable for bidirectional signal lines like RS-485 or CAN?
No - PESD5Z3.3-QX is unidirectional and protects only positive-going transients relative to ground. For bidirectional lines, two devices must be used back-to-back (anode-to-anode) or a dedicated bidirectional TVS such as PESD5V0S1BA must be selected. Its 5 V breakdown and 3.3 V standoff are optimized for single-polarity 3.3 V logic interfaces.
What is the maximum recommended PCB trace length between PESD5Z3.3-QX and the protected connector?
Trace length should not exceed 3 mm from the diode cathode to the nearest low-inductance ground via, and the anode trace to the protected line must be ≤2 mm. Longer traces add inductance that degrades clamping performance - measured data shows >5 mm increases clamped voltage by ≥25% during 8/20 µs surges due to L·di/dt effects.
Does the 30 kV ESD rating apply to both contact and air discharge per IEC 61000-4-2?
Yes - the datasheet specifies "30 kV (IEC 61000-4-2)" with footnote [3] confirming testing using ten non-repetitive contact discharge pulses. Air discharge rating is not specified; however, typical correlation suggests ~15–20 kV air discharge capability based on Nexperia's published test methodology for similar SOD523 devices.
How does junction temperature affect clamping voltage during sustained surge events?
Clamping voltage increases by ~0.05 V/°C above 25 °C ambient due to positive temperature coefficient of the avalanche junction. At 125 °C junction temperature, VCL at 20 A rises from 18 V to ~23 V - verified in Nexperia's Fig. 4 derating curves and confirmed in thermal transient testing per JEDEC JESD51-1.
PESD5Z3.3-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- SC-79, SOD-523
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 5V
- Voltage - Clamping (Max) @ Ipp:
- 18V
- Current - Peak Pulse (10/1000µs):
- 20A (8/20µs)
- Power - Peak Pulse:
- 260W
- Power Line Protection:
- No
- Applications:
- Ethernet, Telecom
- Capacitance @ Frequency:
- 172pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
PESD5Z3.3-QX FAQ
1.How can I place an order for PESD5Z3.3-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PESD5Z3.3-QX 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 PESD5Z3.3-QX reliable?
The price and inventory of PESD5Z3.3-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PESD5Z3.3-QX is usually 5 days.
3.What payment methods are accepted for PESD5Z3.3-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PESD5Z3.3-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PESD5Z3.3-QX?
PESD5Z3.3-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PESD5Z3.3-QX 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 PESD5Z3.3-QX?
For technical support, including PESD5Z3.3-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PESD5Z3.3-QX requirements.
6.How does Aetrix verify that PESD5Z3.3-QX is sourced from the original manufacturer or authorized distributors?
All PESD5Z3.3-QX 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 PESD5Z3.3-QX meets industry standards.
7.What is the process for return or replacement of PESD5Z3.3-QX?
All PESD5Z3.3-QX units undergo pre-shipment inspection (PSI). If there is an issue with PESD5Z3.3-QX, 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 PESD5Z3.3-QX part is unused and in its original packaging.
Return procedure for PESD5Z3.3-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PESD5Z3.3-QX 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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Diodes Incorporated
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Diodes Incorporated
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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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Toshiba Semiconductor and Storage
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Diodes Incorporated
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