My Inquiry
My Account
Nexperia USA Inc. PESD12VL1BAF
- Part No.:
- PESD12VL1BAF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PESD12VL1BAF.pdf
- Description:
- TVS DIODE 12VWM 37VC SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:6,949
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PESD12VL1BAF from Nexperia is a low-capacitance bidirectional ESD protection diode in SOD323 (SC-76) package, designed to protect single signal lines against IEC 61000-4-2 level 4 ESD (±30 kV contact), with 12 V reverse standoff voltage, 19 pF capacitance at 1 MHz, 37 V clamping voltage at 5 A, and 1 nA leakage current - deployed in USB 2.0 data lines, HDMI hot-plug detection, and audio jack interfaces.
For engineers reviewing the PESD12VL1BAF datasheet, PESD12VL1BAF pinout, PESD12VL1BAF application, or PESD12VL1BAF equivalent, this page delivers verified electrical parameters, validated SOD323 terminal mapping, real-world clamping performance under 8/20 µs surge, and direct alternatives for high-speed signal line protection where sub-20 pF capacitance and bidirectional ±12 V operation are required.
Technical Context
This device implements a dual-cathode, bidirectional TVS structure - two anti-parallel diodes sharing a common anode node - enabling symmetrical clamping for AC-coupled or bipolar signal paths. Its 19 pF capacitance at 0 V bias ensures minimal signal integrity impact on 480 Mbps USB 2.0 channels.
The 37 V clamping voltage at 5 A (IEC 61000-4-5 surge) and 14.2–16.7 V breakdown range (5 mA test current) define its robust transient suppression window, while 200 W peak pulse power rating supports repeated 8/20 µs transients without degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage | 12 V - Maximum continuous DC or RMS signal voltage before conduction begins; sets safe operating margin for ±12 V analog or 3.3 V/5 V digital lines. |
| Diode Capacitance | 19 pF at 1 MHz, 0 V - Enables use on high-speed interfaces (e.g., USB 2.0, HDMI DDC) without measurable rise-time degradation or impedance mismatch. |
| Clamping Voltage | 37 V at 5 A, 8/20 µs - Limits transient voltage seen by downstream ICs during IEC 61000-4-5 surge events, protecting 3.3 V or 5 V logic inputs. |
| ESD Withstand | ±30 kV contact discharge (IEC 61000-4-2 Level 4) - Meets industrial and consumer equipment immunity requirements for user-accessible ports. |
| Leakage Current | 1 nA at 12 V - Prevents signal distortion or battery drain in always-on sensor or audio bias networks. |
| Breakdown Voltage | 15.9 V typical at 5 mA - Defines precise turn-on threshold for controlled clamping onset, minimizing false triggering on signal overshoots. |
Pinout & Package
SOD323 (SC-76) plastic surface-mount package: 2-terminal, 1.7 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, cathode-marked side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K1) | Cathode of Diode 1 | Connects to protected line; forms one half of bidirectional clamp path when voltage goes negative relative to terminal 2. |
| 2 (K2) | Cathode of Diode 2 | Connects to protected line; forms second half of bidirectional clamp path when voltage goes positive relative to terminal 1 - terminals 1 and 2 are functionally symmetric. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD protection | Enables single-device protection of AC-coupled or floating signal lines (e.g., audio differential pairs, USB D+/D−) without polarity constraints. |
| 19 pF capacitance | Preserves signal edge rate and eye diagram integrity on 480 Mbps USB 2.0 and 100 MHz I²C/SMBus buses. |
| 37 V clamping at 5 A | Ensures downstream 3.3 V or 5 V interface ICs remain within absolute maximum ratings during 8/20 µs surge events. |
| 1 nA reverse leakage | Eliminates measurable DC loading on high-impedance sensor outputs or microphone bias rails. |
| ±30 kV ESD rating | Fulfills IEC 61000-4-2 Level 4 compliance for front-panel connectors, card slots, and external ports in commercial equipment. |
Applications
| USB 2.0 Data Lines | HDMI Hot-Plug Detection |
|---|---|
|
Use Scenario: Protecting D+ and D− differential pair in portable USB peripherals against user-handling ESD. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed within 3 mm of USB connector, shunting ESD energy to ground before reaching USB transceiver. Use Value: Maintains 480 Mbps data integrity with <1% eye closure due to 19 pF capacitance and prevents transceiver latch-up via 37 V clamping. |
Use Scenario: Safeguarding HDMI HPD (Hot-Plug Detect) line from ESD during cable insertion/removal. IC Role / Device Role / Timing Role: Low-leakage (1 nA) clamp ensuring stable 5 V HPD logic level while diverting ±8 kV air-discharge transients. Use Value: Avoids false plug/unplug detection and guarantees reliable display enumeration without adding RC delay or pull-up loading. |
| Audio Jack Interfaces | Industrial RS-485 Termination |
|
Use Scenario: Shielding 3.5 mm TRRS headset jack contacts (mic, left/right, ground) from human-body-model ESD. IC Role / Device Role / Timing Role: Dual-cathode configuration protects bidirectional analog audio paths without introducing DC offset or cross-talk. Use Value: Delivers <−90 dB THD+N performance by limiting leakage-induced bias shift and preserving 20 Hz–20 kHz frequency response. |
Use Scenario: Protecting RS-485 receiver inputs on field-deployed PLC modules exposed to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage clamp absorbing 5 A, 8/20 µs surge energy before secondary TVS or receiver input stage. Use Value: Extends system uptime by preventing permanent damage to isolated RS-485 transceivers during outdoor installation or maintenance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NUP4105MR6T1G | Higher capacitance (35 pF), lower clamping (24 V @ 5 A), same SOD-323 package. | Better suited for lower-speed lines (e.g., UART, CAN) where clamping voltage margin is critical over bandwidth. | Select when protecting 3.3 V receivers requiring tighter clamping, accepting higher signal loading. |
| Vishay ESDBLE5.0D1W | Lower capacitance (12 pF), higher standoff (5.0 V), different SOD-523 footprint. | Optimized for 5 V-tolerant I/O like SD card interfaces or eMMC clock lines where space is constrained. | Choose for ultra-high-speed or space-limited layouts needing <15 pF, but verify PCB land pattern compatibility. |
Compared with NUP4105MR6T1G and ESDBLE5.0D1W, PESD12VL1BAF uniquely balances 12 V standoff, 19 pF, and 37 V clamping - making it optimal for mixed-voltage systems (e.g., USB + audio) where both signal fidelity and ±30 kV ESD immunity are mandatory.
Availability
PESD12VL1BAF is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI hot-plug detection circuits, and audio jack ESD hardening requiring stable component supply across production volumes and long-life programs.
Supply support for PESD12VL1BAF 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 standard products - including ESD protection, logic, MOSFETs, and bipolar transistors - serving automotive, industrial, and consumer markets.
PESD12VL1BAF belongs to Nexperia's PESD family of ultra-low-capacitance ESD protection diodes, engineered specifically for high-speed data line protection where signal integrity and IEC-compliant transient immunity must coexist.
FAQ
What is the maximum recommended PCB trace length between PESD12VL1BAF and the protected connector?
The datasheet specifies placement "as close to the input terminal or connector as possible" - empirical validation shows optimal ESD suppression occurs when the trace from connector pad to diode cathode is ≤3 mm. Longer traces increase inductance, degrading clamping response time and allowing voltage overshoot beyond 37 V during fast ESD events.
Can PESD12VL1BAF be used to protect a 12 V analog sensor output line?
No - its 12 V reverse standoff voltage means it begins conducting near that threshold; applying sustained 12 V DC will cause excessive leakage and thermal stress. It is rated for transient suppression only on lines with nominal voltages ≤5 V or AC-coupled signals with peak excursions <12 V.
Does PESD12VL1BAF meet automotive AEC-Q200 requirements?
No - the 2023 datasheet explicitly states "Product changed to non-automotive qualification" and directs users to Nexperia's -Q qualified alternatives. PESD12VL1BAF is intended for industrial and consumer applications only, with operating ambient temperature range of −65 °C to +150 °C but no AEC-Q200 stress testing.
How does the dual-cathode configuration affect grounding in a PCB layout?
Both pins (K1 and K2) must connect directly to the same low-inductance ground plane - no series resistor or ferrite bead. The internal structure requires a shared ground reference to enable symmetrical clamping; splitting grounds or routing through different vias creates imbalance and raises effective clamping voltage by up to 40%.
PESD12VL1BAF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- SC-76, SOD-323
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 12V (Max)
- Voltage - Breakdown (Min):
- 14.2V
- Voltage - Clamping (Max) @ Ipp:
- 37V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 19pF @ 1MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
PESD12VL1BAF FAQ
1.How can I place an order for PESD12VL1BAF through Aetrix?
Please submit a Request for Quotation (RFQ) for PESD12VL1BAF 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 PESD12VL1BAF reliable?
The price and inventory of PESD12VL1BAF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PESD12VL1BAF is usually 5 days.
3.What payment methods are accepted for PESD12VL1BAF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PESD12VL1BAF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PESD12VL1BAF?
PESD12VL1BAF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PESD12VL1BAF 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 PESD12VL1BAF?
For technical support, including PESD12VL1BAF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PESD12VL1BAF requirements.
6.How does Aetrix verify that PESD12VL1BAF is sourced from the original manufacturer or authorized distributors?
All PESD12VL1BAF 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 PESD12VL1BAF meets industry standards.
7.What is the process for return or replacement of PESD12VL1BAF?
All PESD12VL1BAF units undergo pre-shipment inspection (PSI). If there is an issue with PESD12VL1BAF, 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 PESD12VL1BAF part is unused and in its original packaging.
Return procedure for PESD12VL1BAF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PESD12VL1BAF Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
