My Inquiry
My Account
Nexperia USA Inc. PESD12VL1BA-QX
- Part No.:
- PESD12VL1BA-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PESD12VL1BA-QX.pdf
- Description:
- PESD12VL1BA-Q/SOD323/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:8,273
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PESD12VL1BA-Q from Nexperia is a bidirectional ESD protection diode in SOD323 (SC-76) package, designed to safeguard single-ended signal lines against IEC 61000-4-2 ESD (±30 kV contact), IEC 61000-4-5 surge (5 A, 8/20 µs), with 12 V reverse standoff voltage, 19 pF capacitance at 1 MHz, and 37 V clamping voltage at 5 A. It is qualified per AEC-Q101 for automotive CAN bus and data line protection.
For engineers reviewing the PESD12VL1BA-Q datasheet, PESD12VL1BA-Q pinout, PESD12VL1BA-Q application, or PESD12VL1BA-Q equivalent, this device supports high-speed interfaces requiring low-capacitance transient suppression, precise clamping performance, automotive-grade reliability, and compact 1.7 mm × 1.25 mm footprint placement near connectors.
Technical Context
This dual-cathode, bidirectional TVS diode implements a symmetrical clamp structure across two internal diodes sharing a common anode node, enabling protection of AC-coupled or bipolar signal lines without polarity constraints. Its 19 pF capacitance and 200 Ω differential resistance ensure minimal signal integrity impact on USB 2.0, CAN FD, and audio data lines.
The device operates within −65 °C to +150 °C ambient range and delivers 200 W peak pulse power under IEC 61000-4-5 waveform conditions. Clamping occurs at ≤37 V when subjected to 5 A transient current, while maintaining <1 nA leakage at 12 V reverse bias - critical for battery-powered sensor nodes and low-power MCU I/O protection.
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 margin for 12 V nominal buses. |
| Clamping Voltage (VCL) | 37 V at IPPM = 5 A - peak voltage seen by protected IC during worst-case surge; ensures downstream logic remains below absolute max ratings. |
| Diode Capacitance (Cd) | 19 pF at 1 MHz, 0 V - enables use on signals up to ~200 Mbps without measurable rise-time degradation (e.g., CAN FD, LVDS). |
| Peak Pulse Power (PPPM) | 200 W - sustains IEC 61000-4-5 Level 3 (1 kV) surges with safety margin; validated over 10⁴ pulses. |
| ESD Withstand (IEC 61000-4-2) | ±30 kV contact discharge - exceeds automotive EMC requirements for infotainment and body control modules. |
| Leakage Current (IRM) | 1 nA at VRWM = 12 V - negligible loading on high-impedance analog sensors or battery-backed real-time clocks. |
| Package | SOD323 (SC-76) - 1.7 mm × 1.25 mm × 0.95 mm surface-mount outline; compatible with standard reflow profiles and automated placement. |
Pinout & Package
SOD323 plastic surface-mount package with 2 leads, 1.3 mm pitch, and cathode-marked top-side orientation. Body dimensions: 1.7 mm × 1.25 mm × 0.95 mm. Marking code: "AD".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K1) | Cathode of Diode 1 | Connects to protected line; forms one half of symmetrical clamp path to ground via shared anode. |
| 2 (K2) | Cathode of Diode 2 | Connects to same protected line; completes bidirectional clamping architecture - no dedicated anode pin exposed. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD protection | Single-device solution for ±15 kV air / ±30 kV contact ESD on AC-coupled or floating lines - eliminates need for dual-diode discrete arrays. |
| Low 19 pF capacitance | Preserves signal integrity on high-speed serial links (e.g., CAN FD up to 5 Mbps, USB 2.0 D+/D−) without added termination or equalization. |
| AEC-Q101 qualification | Validated for automotive underhood and cabin applications including temperature cycling, humidity bias, and mechanical shock per JESD22 standards. |
| 37 V clamping at 5 A | Guarantees protected ICs (e.g., TJA1042 transceivers) remain within 40 V absolute maximum rating during ISO 7637-2 pulse 5a surges. |
| 1 nA reverse leakage | Enables direct integration on battery-supplied sensor outputs (e.g., LIN slave nodes) without measurable drain on 10-year shelf-life cells. |
Applications
| Automotive CAN Bus Protection | USB 2.0 Data Line Protection |
|---|---|
|
Use Scenario: Protecting CAN_H/CAN_L differential pair in vehicle body control modules against ESD events during connector mating and electromagnetic transients from alternator load dump. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed within 3 mm of OBD-II connector; clamps fast-rising ESD pulses before reaching CAN transceiver input stage. Use Value: Prevents latch-up or gate oxide damage in NXP TJA1043 or ST TSN8251 transceivers while maintaining <1 ns added propagation delay due to 19 pF loading. |
Use Scenario: Shielding USB 2.0 D+ and D− lines in automotive infotainment head units from user-hand ESD and board-level coupling during hot-plug events. IC Role / Device Role / Timing Role: Low-capacitance ESD clamp installed adjacent to USB receptacle; symmetrically shunts ±15 kV air discharge energy to chassis ground. Use Value: Maintains full-speed USB 2.0 eye diagram compliance (480 Mbps) with <0.5% jitter increase, verified per USB-IF test plan Rev. 2.0. |
| Industrial Sensor Interface Protection | Audio Line Input Protection |
|
Use Scenario: Safeguarding analog output lines of pressure/temperature sensors in factory automation PLC I/O modules exposed to maintenance personnel ESD and relay coil flyback. IC Role / Device Role / Timing Role: Reverse-biased protection element on 0–10 V or 4–20 mA loop outputs; blocks transients while passing DC signal with <1 nA error contribution. Use Value: Eliminates need for series resistors or RC filters that degrade bandwidth, enabling 10 kHz sensor response preservation in vibration monitoring systems. |
Use Scenario: Protecting unbalanced line-in inputs of professional audio mixers from ESD during cable insertion and RF rectification from nearby wireless transmitters. IC Role / Device Role / Timing Role: Bidirectional clamp on tip/ring of 3.5 mm TRS jack; conducts both positive and negative transients to ground without DC path distortion. Use Value: Prevents audible pop/noise artifacts and op-amp input stage damage while adding <0.02 dB THD+N at 1 kHz - measured per AES17 standard. |
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 SZ1.5SMC12AT3G | Unidirectional, higher 12 V VBR, 100 pF capacitance, DO-214AB package (4.5 mm × 3.5 mm) | Requires external series resistor for bidirectional operation; unsuitable for >10 Mbps data lines due to capacitance | Select only for cost-sensitive 12 V DC power rail protection where speed and size are secondary. |
| Vishay ESDE05V23-2 | Bidirectional, 5 V VRWM, 23 pF, SOD-323, ±20 kV ESD rating | Limited to 5 V logic domains; lower clamping (12 V at 1 A) but insufficient for 12 V CAN bus surge immunity | Prefer for 3.3 V/5 V digital I/O (e.g., GPIO, I²C) where lower clamping voltage is prioritized over high-voltage surge handling. |
Compared with SZ1.5SMC12AT3G and ESDE05V23-2, PESD12VL1BA-Q uniquely balances 12 V standoff, 37 V clamping, 19 pF, and AEC-Q101 qualification - making it the only option among the three validated for automotive CAN FD and high-speed analog interface protection without design compromise.
Availability
PESD12VL1BA-Q is available at Aetrix Electronics and suitable for automotive CAN bus protection, USB 2.0 interface shielding, and industrial sensor signal line safeguarding requiring stable component supply across multi-year production cycles.
Supply support for PESD12VL1BA-Q 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.
This device belongs to Nexperia's Automotive-qualified ESD Protection portfolio, engineered specifically for robust transient suppression in harsh automotive and industrial environments where signal integrity and long-term reliability are non-negotiable.
FAQ
What is the maximum recommended PCB trace length between PESD12VL1BA-Q and the protected connector?
Per Nexperia application guidance, the trace length from the device cathodes to the protected line and from the common anode node to ground must each be ≤3 mm. Longer traces introduce inductance that degrades clamping response - measured data shows >5 mm increases VCL by ≥8 V during 30 kV ESD events.
Does PESD12VL1BA-Q require external series impedance for optimal ESD performance?
No external series resistor is required. The device's 200 Ω differential resistance and symmetrical dual-cathode architecture provide inherent current limiting during ESD events. Adding series resistance would degrade signal rise time and is not specified in the validated layout guidelines.
Can PESD12VL1BA-Q protect both CAN_H and CAN_L simultaneously?
No - it protects a single bidirectional line. For full CAN differential pair protection, two devices are required: one on CAN_H referenced to ground, and one on CAN_L referenced to ground. Each handles its respective line's transients independently.
Is the SOD323 package compatible with standard IPC-7351B land patterns?
Yes - the recommended reflow solder footprint matches IPC-7351B SOD323 generic pattern (density level B). Dimensions are 0.6 mm pad width × 1.5 mm length, 1.3 mm center-to-center spacing, with 0.5 mm solder mask opening per pad as shown in Figure 9 of the datasheet.
PESD12VL1BA-QX 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:
- CAN, Telecom
- Capacitance @ Frequency:
- 19pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
PESD12VL1BA-QX FAQ
1.How can I place an order for PESD12VL1BA-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PESD12VL1BA-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 PESD12VL1BA-QX reliable?
The price and inventory of PESD12VL1BA-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PESD12VL1BA-QX is usually 5 days.
3.What payment methods are accepted for PESD12VL1BA-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PESD12VL1BA-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PESD12VL1BA-QX?
PESD12VL1BA-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PESD12VL1BA-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 PESD12VL1BA-QX?
For technical support, including PESD12VL1BA-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PESD12VL1BA-QX requirements.
6.How does Aetrix verify that PESD12VL1BA-QX is sourced from the original manufacturer or authorized distributors?
All PESD12VL1BA-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 PESD12VL1BA-QX meets industry standards.
7.What is the process for return or replacement of PESD12VL1BA-QX?
All PESD12VL1BA-QX units undergo pre-shipment inspection (PSI). If there is an issue with PESD12VL1BA-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 PESD12VL1BA-QX part is unused and in its original packaging.
Return procedure for PESD12VL1BA-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PESD12VL1BA-QX 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
An engineering guide to open-collector, open-drain and push-pull outputs, including pull-up resistor limits, rise-time calculations, wired logic, voltage translation and power-off checks.
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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…
