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Nexperia USA Inc. PESD5Z12,115
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- Part No.:
- PESD5Z12,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
PESD5Z12,115.pdf
- Description:
- TVS DIODE 12VWM 35VC SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:8,798
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Product details
Overview
PESD5Z12 from Nexperia is a low-capacitance unidirectional ESD protection diode in SOD523 (SC-79) package, designed to protect a single signal line against IEC 61000-4-2 ESD (±30 kV contact), IEC 61000-4-5 surge (6 A, 8/20 µs), with clamping voltage ≤35 V at 6 A and typical diode capacitance of 35 pF at 0 V.
For engineers reviewing the PESD5Z12 datasheet, PESD5Z12 pinout, PESD5Z12 application, or PESD5Z12 equivalent, this device is selected for high-speed data line protection where low capacitance, fast clamping response, and minimal signal distortion are critical-especially in USB 2.0, HDMI, SIM card interfaces, and 10/100/1000 Mbit/s Ethernet PHY lanes.
Technical Context
The PESD5Z12 operates as a unidirectional avalanche diode, conducting only when the anode-to-cathode voltage exceeds the breakdown threshold (~14.1 V), enabling precise polarity-aware transient suppression on positive-only or negative-only signal paths relative to ground. Its clamping behavior is characterized by a differential resistance of ≤40 Ω and a low leakage current (<1 nA at 12 V).
It complies with IEC 61000-4-2 (±30 kV contact discharge) and IEC 61000-4-5 (6 A, 8/20 µs surge), delivering 200 W peak pulse power handling while maintaining sub-35 V clamping at rated current-critical for safeguarding sensitive transceivers without forward-bias interference during normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 12 V - Maximum continuous operating voltage before conduction begins; defines safe signal swing range for protected lines. |
| Breakdown Voltage (VBR) | 14.1 V (min at IR = 1 mA) - Threshold at which avalanche conduction initiates; ensures robust margin above VRWM. |
| Clamping Voltage (VCL) | 35 V (max at IPP = 6 A) - Peak voltage seen by downstream circuit during worst-case surge; limits stress on IC inputs. |
| Diode Capacitance (Cd) | 35 pF (typ at f = 1 MHz, VR = 0 V) - Low parasitic loading preserves signal integrity on high-speed lines up to ~500 MHz. |
| Peak Pulse Current (IPPM) | 6 A (8/20 µs waveform) - Surge-handling capability aligned with IEC 61000-4-5 Level 3 requirements. |
| ESD Rating | ±30 kV (IEC 61000-4-2 contact discharge) - Full immunity to human-body-level ESD events without degradation. |
| Leakage Current (IRM) | <1 nA (at VRWM = 12 V) - Negligible DC loading on bias-sensitive or battery-powered signal paths. |
Pinout & Package
SOD523 (SC-79) ultra-small surface-mount plastic package: 2-pin, 1.2 mm × 0.8 mm × 0.6 mm body, flat lead, cathode band marking (pin 1). Optimized for high-density PCB layouts and reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | K (cathode) | Connected to system ground or return path; defines unidirectional conduction direction from anode to cathode. |
| 2 | A (anode) | Connected to signal line requiring protection; conducts transient current to ground when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional ESD protection | Enables polarity-specific clamping on single-ended lines with positive or negative signal swing relative to ground-no false triggering on normal signal excursions. |
| Low 35 pF capacitance (typ) | Maintains signal rise/fall times and impedance matching on high-speed interfaces (e.g., USB 2.0, HDMI DDC, Ethernet MDI-X) without measurable jitter or attenuation. |
| 27 V clamping at 5 A (typ) | Delivers tighter voltage limiting than generic TVS diodes, reducing risk of latch-up or gate oxide damage in 3.3 V/5 V logic inputs. |
| Sub-1 nA reverse leakage | Prevents DC offset drift and battery drain in always-on portable electronics such as SIM card slots and headset detection circuits. |
| 200 W peak pulse power | Supports repeated surge events per IEC 61000-4-5 without parameter shift or thermal runaway under proper PCB layout. |
Applications
| USB 2.0 Data Lines | HDMI DDC Channel |
|---|---|
|
Use Scenario: Protecting bidirectional D+ and D− lines in portable USB hosts and peripherals against connector hot-plug ESD. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between each data line and ground, with cathode grounded. Use Value: 35 pF capacitance avoids signal integrity loss at 480 Mbps; ±30 kV ESD rating prevents port failure during user handling. |
Use Scenario: Safeguarding the low-speed I²C-based Display Data Channel (DDC) in HDMI source devices from ESD during cable insertion. IC Role / Device Role / Timing Role: Single-line unidirectional protector on DDC_SCL/SDA lines referenced to system ground. Use Value: <1 nA leakage preserves I²C pull-up functionality; 12 V VRWM matches standard 3.3 V DDC voltage rails. |
| SIM Card Interface | 10/100/1000 Mbit/s Ethernet PHY |
|
Use Scenario: Shielding SIM VCC, I/O, and CLK pins in smartphones and IoT modules from ESD during card insertion/removal. IC Role / Device Role / Timing Role: One PESD5Z12 per signal line, cathode tied to ground plane, anode to SIM pin. Use Value: Ultra-small SOD523 footprint saves space in tight SIM tray layouts; 14.1 V VBR avoids false triggering during 3 V SIM power sequencing. |
Use Scenario: Protecting differential MDI-X pairs and management interface pins (e.g., MDIO, MDC) in Ethernet switches and PHY transceivers. IC Role / Device Role / Timing Role: Discrete unidirectional clamp per signal line, placed adjacent to RJ-45 connector. Use Value: 6 A surge rating meets IEC 61000-4-5 Level 3; low capacitance prevents skew between differential pairs in Gigabit applications. |
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 ESD5Z12 | Identical VRWM (12 V), VBR (14.1 V), and Cd (35 pF typ), but higher max VCL (38 V vs. 35 V) and lower ESD rating (±25 kV vs. ±30 kV). | Marginally reduced ESD immunity may require additional layout hardening in high-risk industrial environments. | Select when cross-supplier qualification is required and 3 V margin on clamping voltage is acceptable. |
| Vishay VEML5000-12 | Same SOD523 package, but bidirectional configuration (symmetrical ±12 V VRWM); Cd = 45 pF (typ); VCL = 28 V (±6 A). | Supports AC-coupled or bipolar signal lines (e.g., audio, RS-485), but introduces higher capacitance and unnecessary conduction on negative transients. | Choose only for true bidirectional signal paths; avoid for unidirectional digital lines where low capacitance is prioritized. |
Compared with ESD5Z12 and VEML5000-12, the PESD5Z12 delivers superior ESD immunity (±30 kV), tighter clamping (≤35 V), and lowest capacitance (35 pF), making it optimal for high-speed, polarity-defined data lines where signal fidelity and robustness are jointly critical.
Availability
PESD5Z12 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI DDC channel safeguarding, and SIM card slot ESD hardening requiring stable component supply across high-mix consumer and industrial production programs.
Supply support for PESD5Z12 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 analog solutions for automotive and consumer markets.
The PESD5Z12 belongs to Nexperia's low-capacitance unidirectional ESD protection diode family, engineered specifically for signal integrity–critical interfaces in portable and high-speed electronics.
FAQ
Is PESD5Z12 suitable for bidirectional signal lines like RS-232 or CAN?
No. The PESD5Z12 is unidirectional and conducts only from anode to cathode. For bidirectional lines, a symmetrical device such as the PESD5VX1B or a dual-diode array is required. Using PESD5Z12 on AC-coupled or bipolar signals risks incomplete protection during negative transients.
What is the maximum recommended PCB trace length between PESD5Z12 and the protected connector?
Trace length should be ≤3 mm from the protected pin to the PESD5Z12 anode, with direct ground connection from cathode to solid ground plane via ≥2 vias. Longer traces increase inductance, degrading clamping performance and allowing voltage overshoot beyond VCL during fast ESD events.
Does PESD5Z12 require derating at elevated ambient temperatures?
Yes. Peak pulse power decreases linearly above 25 °C: at 85 °C, PPPM drops to ~75% of 200 W (≈150 W). Derating curves are provided in Figure 4 of the datasheet; design margins must account for worst-case junction temperature in enclosed or thermally constrained enclosures.
Can PESD5Z12 replace a 5 V-rated TVS diode in a 3.3 V system?
No. Its 12 V VRWM and 14.1 V VBR make it unsuitable for clamping 3.3 V logic directly-it activates too late. For 3.3 V I/O, use a 3.3 V-rated device like PESD5Z3.3 or PESD5Z5.0; PESD5Z12 is intended for 12 V signal rails or high-voltage auxiliary lines.
PESD5Z12,115 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):
- 12V (Max)
- Voltage - Breakdown (Min):
- 14.1V
- Voltage - Clamping (Max) @ Ipp:
- 35V
- Current - Peak Pulse (10/1000µs):
- 6A (8/20µs)
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- Ethernet
- Capacitance @ Frequency:
- 35pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
PESD5Z12,115 FAQ
1.How can I place an order for PESD5Z12,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PESD5Z12,115 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 PESD5Z12,115 reliable?
The price and inventory of PESD5Z12,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PESD5Z12,115 is usually 5 days.
3.What payment methods are accepted for PESD5Z12,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PESD5Z12,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PESD5Z12,115?
PESD5Z12,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PESD5Z12,115 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 PESD5Z12,115?
For technical support, including PESD5Z12,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PESD5Z12,115 requirements.
6.How does Aetrix verify that PESD5Z12,115 is sourced from the original manufacturer or authorized distributors?
All PESD5Z12,115 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 PESD5Z12,115 meets industry standards.
7.What is the process for return or replacement of PESD5Z12,115?
All PESD5Z12,115 units undergo pre-shipment inspection (PSI). If there is an issue with PESD5Z12,115, 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 PESD5Z12,115 part is unused and in its original packaging.
Return procedure for PESD5Z12,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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