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Vishay General Semiconductor - Diodes Division P4SMA120AHE3/5A
- Part No.:
- P4SMA120AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA120AHE3/5A.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA120AHE3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 120 V standoff voltage (VWM), 137 V maximum clamping voltage (VC) at 1.8 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial electronics.
For engineers reviewing the P4SMA120AHE3/5A datasheet, P4SMA120AHE3/5A pinout, P4SMA120AHE3/5A application, or P4SMA120AHE3/5A equivalent, key selection criteria include its AEC-Q101 qualification, 114–126 V breakdown range (VBR), low 1.0 µA reverse leakage at VWM, and compatibility with automated SMT assembly on standard PCB copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable avalanche behavior under repetitive surge conditions. Its thermal resistance (RθJA = 120 °C/W) and junction temperature limit (TJ max = 150 °C) define safe derating above 25 °C ambient.
The device meets J-STD-020 MSL Level 1 moisture sensitivity and supports 260 °C lead-free reflow. It delivers fast response time (<1 ns) and low incremental surge resistance, enabling effective suppression of ESD, inductive switching spikes, and lightning-induced surges per IEC 61000-4-2/4-4/4-5 standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 102 V - Maximum continuous reverse voltage before conduction begins; defines operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 114–126 V at 1.0 mA test current - Ensures predictable, repeatable avalanche onset across production lots. |
| VC (Clamping Voltage) | 165 V at 1.8 A IPPM (10/1000 µs) - Limits transient voltage seen by protected downstream circuitry. |
| PPPM (Peak Pulse Power) | 400 W - Sustains high-energy transients without failure when mounted on 5.0 mm × 5.0 mm copper pads. |
| ID (Reverse Leakage) | 1.0 µA at VWM - Minimizes standby power loss and avoids false triggering in low-power sensor circuits. |
| TJ max | 150 °C - Enables reliable operation in under-hood automotive and industrial environments with elevated ambient temperatures. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side of protected line; enables unidirectional clamping to ground. |
| Cathode | Current exit terminal during forward conduction; marked with band | Connected to higher-potential side (e.g., VCC rail or signal line); defines clamping direction and polarity. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, low-drift breakdown voltage and long-term reliability under repeated surge stress. |
| 400 W peak pulse power (10/1000 µs) | Provides robust protection against high-energy transients common in automotive load-dump and industrial motor switching. |
| AEC-Q101 qualified (HE3 suffix) | Validates suitability for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT processes without preconditioning or special handling requirements. |
| Low 1.0 µA leakage at VWM | Preserves battery life and signal integrity in always-on IoT sensors and low-power microcontroller peripherals. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V power rails in engine control modules from load-dump transients up to 35 V and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between VBAT and ground, triggered within <1 ns of overvoltage event. Use Value: Limits rail voltage to ≤165 V during 400 W surges, preventing damage to MCU power supplies and CAN transceivers. |
Use Scenario: Shielding analog and digital signal lines (e.g., I²C, SPI, LIN) of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Point-of-entry transient suppressor on sensor harness connector, shunting surge energy before reaching ASIC input pins. Use Value: Clamps 8 kV contact ESD (IEC 61000-4-2) to <165 V while maintaining sub-µA leakage for precision ADC reference stability. |
| Telecom Line Interface Protection | Consumer Device USB Port Protection |
Use Scenario: Safeguarding Ethernet PHY or RS-485 transceivers in network switches and base stations from lightning-induced surges on data lines. IC Role / Device Role / Timing Role: Secondary-level TVS on differential pair, coordinated with primary gas discharge tube (GDT) for staged protection. Use Value: Provides fast-response clamping (VC = 165 V) after GDT fires, limiting residual voltage to levels compatible with ±15 V transceiver I/O rails. |
Use Scenario: Adding surge immunity to USB 2.0 data lines (D+/D−) and VBUS in portable speakers, smart home hubs, and charging docks. IC Role / Device Role / Timing Role: Unidirectional TVS on VBUS line only (cathode to VBUS, anode to ground), blocking reverse current while clamping overvoltage. Use Value: Withstands 30 A 8/20 µs surge (derated from 400 W rating) and maintains <1 µA leakage to avoid USB enumeration failures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ120A-E3/5A (Vishay) | Same VWM (102 V), VC (165 V), and package; lower PPPM (400 W vs. SMAJ's 400 W), but SMAJ series has tighter VBR tolerance (±5% vs. ±5.3% for P4SMA). | Designed for general-purpose industrial use; lacks AEC-Q101 qualification in base E3 variant. | Select P4SMA120AHE3/5A for automotive systems requiring AEC-Q101; choose SMAJ120A-E3/5A where qualification is not required and tighter VBR tolerance is preferred. |
| 1.5SMC120A (ON Semiconductor) | Same VWM (102 V), VC (165 V), and SMA package; rated for 1500 W peak pulse power (10/1000 µs), but requires larger pad layout (0.5" x 0.5") for full rating. | Targeted at high-surge industrial environments (e.g., factory automation); not AEC-Q101 qualified. | Choose P4SMA120AHE3/5A when space-constrained layouts and automotive qualification are mandatory; select 1.5SMC120A only if higher surge capacity is needed and board area allows larger pads. |
Compared with SMAJ120A-E3/5A and 1.5SMC120A, P4SMA120AHE3/5A uniquely combines AEC-Q101 qualification, industry-standard SMA footprint, and optimized thermal performance (RθJA = 120 °C/W) for compact automotive and embedded designs where reliability and manufacturability are critical.
Availability
P4SMA120AHE3/5A is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom line interfaces, and consumer USB power protection requiring stable component supply and AEC-Q101 compliance.
Supply support for P4SMA120AHE3/5A 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series is engineered for high-reliability transient suppression in automotive, industrial, and communications systems - delivering consistent clamping performance, AEC-Q101 validation, and SMT-ready packaging for automated manufacturing.
FAQ
What is the breakdown voltage range for P4SMA120AHE3/5A?
The P4SMA120AHE3/5A has a specified breakdown voltage (VBR) range of 114 V to 126 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This range ensures consistent avalanche initiation across temperature and production lots, directly supporting its role as a precise overvoltage clamp in safety-critical circuits.
Is P4SMA120AHE3/5A suitable for automotive applications?
Yes, P4SMA120AHE3/5A is AEC-Q101 qualified (indicated by the HE3 suffix), having passed stress tests including temperature cycling, high-temperature reverse bias, and ESD per automotive reliability standards. It is explicitly recommended for engine control units, body electronics, and ADAS sensor protection where qualification is mandatory.
What is the maximum clamping voltage of P4SMA120AHE3/5A under surge conditions?
The P4SMA120AHE3/5A exhibits a maximum clamping voltage (VC) of 165 V at 1.8 A peak pulse current with a 10/1000 µs waveform. This value is guaranteed under standardized test conditions using 5.0 mm × 5.0 mm copper pads, defining the upper voltage limit imposed on protected circuitry during transient events.
Does P4SMA120AHE3/5A have polarity marking, and how is it identified?
Yes, P4SMA120AHE3/5A is unidirectional and features a cathode band marking on the SMA (DO-214AC) package body. The banded end corresponds to the cathode terminal, which must be connected toward the higher-potential side (e.g., VCC or signal line) to enable proper clamping to ground during overvoltage events.
What is the thermal resistance and maximum junction temperature of P4SMA120AHE3/5A?
P4SMA120AHE3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and a maximum junction temperature (TJ max) of +150 °C. These parameters govern derating curves for peak pulse power above 25 °C ambient and confirm suitability for under-hood automotive and high-temperature industrial deployments.
P4SMA120AHE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 102V
- Voltage - Breakdown (Min):
- 114V
- Voltage - Clamping (Max) @ Ipp:
- 165V
- Current - Peak Pulse (10/1000µs):
- 1.8A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA120AHE3/5A FAQ
1.How can I place an order for P4SMA120AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA120AHE3/5A 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 P4SMA120AHE3/5A reliable?
The price and inventory of P4SMA120AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA120AHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA120AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA120AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA120AHE3/5A?
P4SMA120AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA120AHE3/5A 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 P4SMA120AHE3/5A?
For technical support, including P4SMA120AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA120AHE3/5A requirements.
6.How does Aetrix verify that P4SMA120AHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA120AHE3/5A 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 P4SMA120AHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA120AHE3/5A?
All P4SMA120AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA120AHE3/5A, 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 P4SMA120AHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA120AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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