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Vishay General Semiconductor - Diodes Division P4SMA36AHM3/I
- Part No.:
- P4SMA36AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA36AHM3/I.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,102
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Product details
Overview
P4SMA36AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 36 V breakdown voltage (VBR = 34.2–37.8 V at 1 mA), 30.8 V standoff voltage (VWM), clamps to ≤49.9 V at 8.0 A peak pulse current, and delivers 400 W peak pulse power (10/1000 µs waveform) - deployed in automotive sensor interfaces, industrial I/O protection, and DC power rail surge suppression.
For engineers reviewing the P4SMA36AHM3/I datasheet, P4SMA36AHM3/I pinout, P4SMA36AHM3/I application, or P4SMA36AHM3/I equivalent, this page provides verified electrical parameters, AEC-Q101 qualification status, SMA (DO-214AC) package dimensions, thermal resistance data, and direct alternative part comparisons for design-in and supply chain continuity.
Technical Context
The P4SMA36AHM3/I operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology for stable, repeatable clamping under transient stress. Its low incremental surge resistance and fast response time (<1 ns) enable effective suppression of ESD, lightning-induced surges, and inductive switching spikes in DC circuits up to 150 °C junction temperature.
Rated for 40 A non-repetitive forward surge current (8.3 ms half-sine), it meets JESD201 Class 2 whisker resistance and MSL Level 1 reflow compatibility (260 °C peak). The halogen-free, RoHS-compliant HM3 suffix confirms AEC-Q101 qualification for automotive-grade reliability in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V at 1 mA - defines precise avalanche initiation threshold for predictable clamping onset |
| VWM | 30.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | ≤49.9 V at 8.0 A - clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 400 W - peak pulse power handling capability with standard lightning/surge waveform |
| RθJA | 120 °C/W - thermal resistance junction-to-ambient, critical for derating above 25 °C ambient |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive or industrial enclosures |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements (HTOL, TC, HAST, etc.) |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode indicated by band; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to protected line ground or low-side reference; enables conduction during reverse transients |
| Cathode | Current exit terminal in forward bias; marked with band | Connected to protected line (e.g., 36 V rail); conducts avalanche current when VLINE > VC |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity without external series impedance |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free reflow assembly without popcorn or delamination risk |
| Halogen-free & RoHS-compliant (HM3) | Fulfills automotive OEM material compliance requirements (e.g., GMW3172, Ford WSS-M99P9999-A1) |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a) |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and jump-start transients in 12 V/24 V systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground, clamping transients before they reach sensitive input pins. Use Value: Maintains VWM = 30.8 V margin above nominal 24 V rail while clamping to ≤49.9 V - preserving signal integrity and preventing latch-up in ASICs. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff device across input terminals, absorbing repetitive 400 W pulses without degradation over 100,000+ cycles. Use Value: Enables reliable operation in EN 61000-4-4 (EFT) and EN 61000-4-5 (surge) compliant designs without derating or parallel staging. |
| DC Power Rail Surge Suppression | Consumer Device USB/Power Port Protection |
Use Scenario: Secondary-level protection on 36 V DC power distribution boards in solar charge controllers and telecom rectifiers. IC Role / Device Role / Timing Role: Parallel-connected TVS shunting surge energy to ground during lightning-induced common-mode events on output rails. Use Value: Withstands 40 A 8.3 ms surge (IFSM) and maintains <1 µA leakage at 30.8 V - minimizing standby power loss and thermal drift. |
Use Scenario: Input-stage transient suppression on 5 V/12 V USB-C PD adapter outputs and auxiliary power ports in smart home hubs. IC Role / Device Role / Timing Role: Fast-clamping element placed after fuse and upstream of DC-DC converter, limiting voltage seen by downstream regulators. Use Value: Sub-50 V clamping at rated current ensures safe operation of 5 V LDOs and USB PHYs rated to 6 V absolute maximum. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36AHE3/A | Same VBR range (34.2–37.8 V), but rated for 400 W with 1.5 kW peak pulse power capability (8/20 µs); higher IPPM (11.9 A) | Better suited for high-energy lightning surge standards (IEC 61643-31) where longer tail currents dominate | Select SMAJ36AHE3/A when system-level surge testing requires >400 W headroom or dual-waveform compliance |
| 1.5SMC36A | Same VWM/VBR, but SMC (DO-214AB) package - 2.5 mm wider, 0.3 mm thicker; RθJA = 100 °C/W (lower thermal resistance) | Preferred for high-power density PCBs requiring enhanced thermal dissipation without heatsinking | Choose 1.5SMC36A where board space allows larger footprint and thermal management is prioritized over profile height |
Compared with P4SMA36AHM3/I, SMAJ36AHE3/A offers higher surge headroom for demanding EMC validation, while 1.5SMC36A improves thermal performance in sustained pulse environments - both require layout review due to differing package footprints and no pin-to-pin compatibility.
Availability
P4SMA36AHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, and DC power rail surge suppression requiring stable component supply, AEC-Q101 traceability, and halogen-free compliance.
Supply support for P4SMA36AHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific optimization.
The P4SMA Series targets cost-sensitive, high-volume transient protection needs in automotive, industrial, and consumer electronics - engineered for automated SMT assembly, AEC-Q101 qualification, and consistent clamping performance across temperature.
FAQ
What is the clamping voltage of the P4SMA36AHM3/I at its rated peak pulse current?
The P4SMA36AHM3/I clamps to a maximum of 49.9 V at its rated peak pulse current of 8.0 A (10/1000 µs waveform). This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within their absolute maximum ratings. The P4SMA36AHM3/I achieves this with low incremental resistance and stable avalanche behavior across its operating temperature range.
Is the P4SMA36AHM3/I qualified for automotive applications?
Yes, the P4SMA36AHM3/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's P4SMA series datasheet (Rev. 09-Jan-2024). This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - validating suitability for under-hood and chassis-mounted automotive electronics. The P4SMA36AHM3/I also meets JESD201 Class 2 whisker resistance and MSL Level 1 reflow requirements.
What does the "HM3" suffix indicate in P4SMA36AHM3/I?
The "HM3" suffix in P4SMA36AHM3/I denotes halogen-free, RoHS-compliant construction with full AEC-Q101 qualification - distinguishing it from commercial-grade E3/M3 variants. The "H" indicates halogen-free molding compound, "M" confirms RoHS compliance, and "3" specifies tape-and-reel packaging in 13-inch reels (I = reel size code). This suffix ensures compliance with automotive OEM material specifications and environmental directives without compromising electrical performance.
Can the P4SMA36AHM3/I be used in bidirectional configurations?
No, the P4SMA36AHM3/I is a unidirectional TVS diode, as indicated by its "A" suffix and absence of "CA" designation. Bidirectional variants (e.g., P4SMA36CA) are explicitly listed in the datasheet with symmetrical breakdown characteristics. Using P4SMA36AHM3/I in bidirectional applications would result in forward conduction during negative transients - potentially damaging the device or failing to protect the circuit. Always select CA-suffixed parts for AC or dual-polarity signal line protection.
What is the thermal resistance junction-to-ambient for the P4SMA36AHM3/I?
The P4SMA36AHM3/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"). This value assumes standard JEDEC test conditions and is essential for calculating allowable power dissipation at elevated ambient temperatures. Derating curves in the datasheet show that at 85 °C ambient, the device's usable peak pulse power drops to ~260 W - a key consideration for thermally constrained layouts.
P4SMA36AHM3/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:
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA36AHM3/I FAQ
1.How can I place an order for P4SMA36AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA36AHM3/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 P4SMA36AHM3/I reliable?
The price and inventory of P4SMA36AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA36AHM3/I is usually 5 days.
3.What payment methods are accepted for P4SMA36AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA36AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA36AHM3/I?
P4SMA36AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA36AHM3/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 P4SMA36AHM3/I?
For technical support, including P4SMA36AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA36AHM3/I requirements.
6.How does Aetrix verify that P4SMA36AHM3/I is sourced from the original manufacturer or authorized distributors?
All P4SMA36AHM3/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 P4SMA36AHM3/I meets industry standards.
7.What is the process for return or replacement of P4SMA36AHM3/I?
All P4SMA36AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA36AHM3/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 P4SMA36AHM3/I part is unused and in its original packaging.
Return procedure for P4SMA36AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA36AHM3/I Tags
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