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Vishay General Semiconductor - Diodes Division P4SMA36AHE3/5A
- Part No.:
- P4SMA36AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA36AHE3/5A.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,560
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Product details
Overview
P4SMA36AHE3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping transient overvoltages on power and signal lines. It features a 34.2 V minimum breakdown voltage (VBR), 30.8 V standoff voltage (VWM), 49.9 V maximum clamping voltage (VC) at 8.0 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 systems.
For engineers reviewing the P4SMA36AHE3/5A datasheet, P4SMA36AHE3/5A pinout, P4SMA36AHE3/5A application, or P4SMA36AHE3/5A equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
The P4SMA36AHE3/5A operates as a clamping-type TVS diode with avalanche breakdown behavior, triggered when reverse voltage exceeds its 34.2–37.8 V breakdown range at 1 mA test current. Its glass-passivated junction ensures stable leakage performance (<1.0 µA at VWM) and fast response time (<1 ns) to ESD and lightning-induced transients.
Thermally, it exhibits 120 °C/W junction-to-ambient thermal resistance (RθJA) on standard 0.2" × 0.2" copper pads and supports repetitive surge duty cycles up to 0.01% - derating linearly above 25 °C ambient per Figure 2. It meets J-STD-020 MSL Level 1 and is qualified to AEC-Q101 for automotive under-hood and infotainment applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 30.8 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (Breakdown) | 34.2–37.8 V at 1 mA - precise avalanche initiation threshold for reliable transient detection |
| VC (Clamping) | 49.9 V at 8.0 A IPPM - limits downstream circuit voltage during 10/1000 µs surge events |
| PPPM | 400 W - peak pulse power handling capability under standardized 10/1000 µs waveform |
| IPPM | 8.0 A - maximum non-repetitive peak pulse current the device safely clamps without failure |
| TJ max | 150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD |
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 | Forward conduction terminal | Connected to lower-potential side of protected line; enables forward bias operation during fault conditions |
| Cathode | Reverse-biased clamping terminal | Connected to higher-potential side; avalanche conduction initiates here during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V/24 V automotive rails |
| Glass passivated junction | Ensures stable VBR tolerance (±5%), low leakage (<1 µA), and long-term reliability under thermal stress |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS sensor interfaces |
| MSL Level 1 | Allows unlimited floor life and reflow at 260 °C peak without preconditioning - ideal for high-volume SMT lines |
| Low profile SMA package | Reduces board space vs. DO-15; compatible with standard pick-and-place equipment and 0.2" × 0.2" thermal pads |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V power inputs in engine control units (ECUs) and lighting modules from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between battery rail and DC-DC input stage. Use Value: Limits transient voltage to ≤49.9 V, preventing damage to LDOs and microcontrollers rated for 40 V absolute max. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Reverse-biased protection device across sensor output and ground, absorbing ESD and inductive kickback. Use Value: Clamps 8 kV contact ESD (IEC 61000-4-2) within <1 ns while maintaining <1 µA leakage at 30.8 V operating voltage. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Stage |
|
Use Scenario: Front-end protection on AC/DC adapter inputs in telecom base station power supplies exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device after bridge rectifier, shunting surge energy to ground before bulk capacitor. Use Value: Handles 400 W peak pulse power with 0.01% duty cycle, sustaining repeated 10/1000 µs transients without degradation. |
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters where 20 V output rails require transient margin. IC Role / Device Role / Timing Role: Unidirectional TVS connected between VBUS and GND to clamp flyback spikes from synchronous rectifiers. Use Value: Provides 30.8 V standoff with 49.9 V clamping - aligns with USB PD 3.0 VBUS tolerance (20 V ±10%) and safety margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A-E3/52 | Higher 600 W PPPM rating; SMB package (DO-214AA), larger footprint and 150 °C TJ max | Better suited for higher-energy surges; requires larger pad layout and thermal relief | Select when >400 W surge margin is required and board space allows SMB footprint |
| 1.5SMC36A | Same VWM/VC specs but in larger SMC (DO-214AB) package; 1500 W PPPM, RθJA = 100 °C/W | Used in legacy industrial designs with higher surge immunity requirements and less space-constrained layouts | Choose for retrofitting existing SMC-based designs or where higher single-pulse energy absorption is critical |
Compared with SMBJ36A-E3/52 and 1.5SMC36A, the P4SMA36AHE3/5A offers optimal balance of AEC-Q101 qualification, compact SMA footprint, and 400 W surge capability - making it preferred for new automotive and space-constrained industrial designs requiring validated reliability and SMT scalability.
Availability
P4SMA36AHE3/5A is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and consumer USB-C adapters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4SMA36AHE3/5A 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and automotive-grade validation.
The P4SMA Series is part of Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-reliability transient suppression in automotive, industrial, and telecom applications where compact size, AEC-Q101 compliance, and precise clamping are critical.
FAQ
What is the clamping voltage of P4SMA36AHE3/5A at its rated peak pulse current?
The P4SMA36AHE3/5A has a maximum clamping voltage (VC) of 49.9 V at 8.0 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88367 and defines the upper voltage limit imposed on protected circuits during surge events. The P4SMA36AHE3/5A maintains this clamping performance across its qualified temperature range and is validated for AEC-Q101 automotive use.
Is P4SMA36AHE3/5A suitable for automotive applications?
Yes, P4SMA36AHE3/5A is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix indicating RoHS-compliant and AEC-Q101-qualified construction. It supports operating junction temperatures from –65 °C to +150 °C and passes stress tests including temperature cycling, highly accelerated life testing (HALT), and ESD per AEC standards. The P4SMA36AHE3/5A is commonly deployed in engine control units, body control modules, and ADAS sensor interfaces.
What does the "/5A" suffix mean in P4SMA36AHE3/5A?
The "/5A" suffix in P4SMA36AHE3/5A denotes the packaging configuration: 7500 units per 13-inch diameter plastic tape and reel. This differs from "/61", which indicates 1800 units per 7-inch reel. Both configurations use the same die and electrical specifications; the /5A variant is optimized for high-volume SMT production lines requiring extended reel lengths and reduced changeover frequency. The P4SMA36AHE3/5A remains fully interchangeable electrically and mechanically with other P4SMA36AHE3 variants.
How does P4SMA36AHE3/5A differ from bidirectional TVS diodes like P4SMA36CA?
The P4SMA36AHE3/5A is unidirectional and functions only in reverse-bias clamping mode, with polarity marked by a cathode band. In contrast, P4SMA36CA is bidirectional and symmetrical - it clamps in both directions with identical VBR and VC characteristics. The P4SMA36AHE3/5A is selected for DC power line protection where polarity is fixed, offering tighter VBR tolerance and lower leakage than its bidirectional counterpart. Its design eliminates ambiguity in orientation during assembly.
What is the thermal resistance of P4SMA36AHE3/5A, and how does it affect layout?
The P4SMA36AHE3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal - as specified in Vishay document 88367. This value assumes minimal PCB copper; increasing pad area or adding internal ground planes reduces RθJA. For reliable operation at full 400 W pulse power, designers must follow the recommended mounting pad layout and avoid excessive thermal isolation. The P4SMA36AHE3/5A's thermal performance directly impacts its ability to sustain repetitive surges without junction overheating.
P4SMA36AHE3/5A 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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 8A
- Power - Peak Pulse:
- 400W
- 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)
P4SMA36AHE3/5A FAQ
1.How can I place an order for P4SMA36AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA36AHE3/5A 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 P4SMA36AHE3/5A reliable?
The price and inventory of P4SMA36AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA36AHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA36AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA36AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA36AHE3/5A?
P4SMA36AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA36AHE3/5A 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 P4SMA36AHE3/5A?
For technical support, including P4SMA36AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA36AHE3/5A requirements.
6.How does Aetrix verify that P4SMA36AHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA36AHE3/5A 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 P4SMA36AHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA36AHE3/5A?
All P4SMA36AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA36AHE3/5A, 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 P4SMA36AHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA36AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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