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Vishay General Semiconductor - Diodes Division P4SMA36AHE3_A/I
- Part No.:
- P4SMA36AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA36AHE3_A/I.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,354
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Product details
Overview
P4SMA36AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 36 V standoff voltage (VWM), 49.9 V clamping voltage at 8.0 A peak pulse current, and 400 W peak pulse power with 10/1000 µs waveform - designed to protect MOSFETs, ICs, and sensor signal lines against inductive switching transients and lightning-induced surges in automotive and industrial power electronics.
For engineers reviewing the P4SMA36AHE3_A/I datasheet, P4SMA36AHE3_A/I pinout, P4SMA36AHE3_A/I application, or P4SMA36AHE3_A/I equivalent, this AEC-Q101 qualified, RoHS-compliant TVS offers verified clamping performance, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability board-level ESD and surge protection design.
Technical Context
The P4SMA36AHE3_A/I operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 34.2–37.8 V breakdown range (VBR at 1 mA), then clamping transient energy to ≤49.9 V while conducting up to 8.0 A peak pulse current. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns).
Thermally, it features 120 °C/W junction-to-ambient thermal resistance and supports continuous power dissipation of 3.3 W on infinite heatsink at 50 °C ambient. It is rated for operating junction temperatures from –65 °C to +150 °C and meets JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30.8 V - maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 34.2–37.8 V at 1 mA - precise avalanche initiation range ensuring predictable turn-on under overvoltage stress |
| VC (Clamping Voltage) | 49.9 V at 8.0 A IPPM - peak voltage seen by protected circuit during 10/1000 µs surge; limits downstream device stress |
| PPPM (Peak Pulse Power) | 400 W - surge energy handling capability per 10/1000 µs waveform; enables robust protection against IEC 61000-4-5 Level 3/4 threats |
| ID (Reverse Leakage) | 1.0 µA at VWM - ultra-low leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits |
| TJ max. | +150 °C - extended junction temperature rating supports operation in under-hood automotive and industrial environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to circuit ground or lower-potential node; defines reference for clamping action |
| Cathode | Transient current sink / Clamping output | Connected to protected line (e.g., power rail or signal); conducts surge current to ground during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 400 W Peak Pulse Power (10/1000 µs) | Enables compliance with IEC 61000-4-5 surge immunity requirements up to 4 kV (line-earth) in compact layout |
| AEC-Q101 Qualification | Validated for automotive powertrain, body control, and ADAS modules requiring zero-failure field reliability |
| Glass Passivated Junction | Ensures stable VBR over lifetime and resistance to humidity-induced parameter drift in harsh environments |
| MSL Level 1 (260 °C Reflow) | Supports standard lead-free reflow assembly without pre-baking or special handling |
| Low Incremental Surge Resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a), improving protection margin |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump (ISO 7637-2 pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 30.8 V. Use Value: Limits rail voltage to ≤49.9 V during 8.0 A transients, preventing damage to 36 V-rated DC-DC controllers and microcontrollers. |
Use Scenario: Shielding analog outputs (e.g., 4–20 mA current loops) in factory automation sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS connected across signal and return lines to absorb sub-100 ns ESD pulses per IEC 61000-4-2. Use Value: Sub-1 ns response and 1.0 µA leakage preserve signal accuracy while enabling >8 kV contact ESD immunity. |
| Telecom DC Power Input Protection | Consumer Device USB Port Protection |
Use Scenario: Safeguarding PoE-powered network switches against induced surges on 48 V DC input rails. IC Role / Device Role / Timing Role: Primary TVS on input stage, coordinated with upstream fuse and secondary filtering. Use Value: 400 W rating handles repetitive surges from nearby lightning strikes; 150 °C TJ max supports sealed enclosure operation. |
Use Scenario: Adding secondary-level surge protection to USB VBUS lines in smart home hubs exposed to AC adapter transients. IC Role / Device Role / Timing Role: Unidirectional TVS between VBUS and GND, positioned after USB connector but before power switch. Use Value: 30.8 V VWM avoids interference with 5 V nominal operation; 49.9 V VC prevents overvoltage damage to USB PD controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/5A | Same VWM (30.8 V), identical SMA package, but rated for 400 W with 10/1000 µs waveform and 120 °C/W RθJA - no AEC-Q101 qualification | Commercial/industrial use only; not approved for automotive production | Select when AEC-Q101 is not required and cost optimization is prioritized over automotive qualification |
| 1.5SMC36A | Higher package thermal resistance (RθJA = 150 °C/W), same VWM/VC specs, but DO-214AB (SMB) package - 2.5 mm wider than SMA | Requires PCB layout revision due to larger footprint and different pad geometry | Choose only if existing SMB footprint is fixed and thermal derating can be accommodated via copper area increase |
Compared with SMAJ36A-E3/5A and 1.5SMC36A, the P4SMA36AHE3_A/I uniquely combines AEC-Q101 qualification, SMA footprint compatibility, and verified 400 W surge capability - making it the preferred choice for automotive Tier-1 suppliers needing drop-in reliability assurance without layout change.
Availability
P4SMA36AHE3_A/I is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface design, and telecom DC input hardening requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101 compliance documentation.
Supply support for P4SMA36AHE3_A/I 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, precision, and application-specific validation.
The P4SMA Series targets board-level transient protection in automotive, industrial, and telecom systems - engineered for high surge robustness, low clamping voltage, and seamless integration into automated SMT assembly lines.
FAQ
What is the clamping voltage of the P4SMA36AHE3_A/I at its rated peak pulse current?
The P4SMA36AHE3_A/I 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 Vishay document 88367 and defines the upper voltage limit imposed on protected circuitry during surge events. The P4SMA36AHE3_A/I maintains this clamping performance across its qualified temperature range and is validated for repetitive surge duty cycles up to 0.01 %.
Is the P4SMA36AHE3_A/I suitable for automotive applications?
Yes, the P4SMA36AHE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix indicating RoHS-compliant and AEC-Q101 qualified construction. It undergoes stress testing per AEC-Q101 including HTGB, HTRB, and temperature cycling, and is rated for junction temperatures up to +150 °C - making it suitable for engine control units, body electronics, and ADAS power domains where reliability under thermal and electrical stress is mandatory. The P4SMA36AHE3_A/I meets these requirements without derating.
What does the "_A/I" suffix mean in P4SMA36AHE3_A/I?
The "_A/I" suffix in P4SMA36AHE3_A/I indicates two key attributes: "A" denotes the revision level (per Vishay's ordering note: "_A is available for P4SMA6.8(C)A to P4SMA220(C)A"), and "I" specifies the packaging format - 13-inch diameter plastic tape and reel containing 7500 units. This matches the ordering information table in document 88367, where "I" corresponds to high-volume SMT assembly readiness. The P4SMA36AHE3_A/I is therefore supplied in industry-standard 13″ reels optimized for pick-and-place equipment.
How does the P4SMA36AHE3_A/I compare to bidirectional TVS diodes like P4SMA36CA?
The P4SMA36AHE3_A/I is unidirectional and intended for DC rail protection where polarity is fixed (e.g., 12 V or 48 V inputs), offering lower leakage (1.0 µA vs. 10 µA for P4SMA36CA) and higher surge current rating in the forward direction. In contrast, P4SMA36CA is bidirectional and suited for AC or floating signal lines. The P4SMA36AHE3_A/I cannot replace P4SMA36CA in AC-coupled applications due to polarity dependence, and vice versa - selection must match circuit topology and voltage polarity constraints.
What is the thermal resistance and power derating behavior of the P4SMA36AHE3_A/I?
The P4SMA36AHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended copper pads (0.2″ × 0.2″). Its 3.3 W steady-state power dissipation rating applies at TA = 50 °C on an infinite heatsink; above 25 °C ambient, power must be linearly derated per Figure 2 in document 88367 - e.g., at 100 °C ambient, maximum continuous power drops to ~1.7 W. The P4SMA36AHE3_A/I retains full 400 W surge capability regardless of ambient temperature due to short pulse duration.
P4SMA36AHE3_A/I 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:
- Active
- 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_A/I FAQ
1.How can I place an order for P4SMA36AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA36AHE3_A/I 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_A/I reliable?
The price and inventory of P4SMA36AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA36AHE3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA36AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA36AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA36AHE3_A/I?
P4SMA36AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA36AHE3_A/I 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_A/I?
For technical support, including P4SMA36AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA36AHE3_A/I requirements.
6.How does Aetrix verify that P4SMA36AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA36AHE3_A/I 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_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA36AHE3_A/I?
All P4SMA36AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA36AHE3_A/I, 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_A/I part is unused and in its original packaging.
Return procedure for P4SMA36AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA36AHE3_A/I Tags
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