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Vishay General Semiconductor - Diodes Division P4SMA36AHM3/H
- Part No.:
- P4SMA36AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA36AHM3/H.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,064
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Product details
Overview
P4SMA36AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount TRANSZORB® transient voltage suppressor (TVS) in SMA (DO-214AC) package, designed for clamping inductive switching transients and ESD events on power and signal lines. It features 36 V standoff voltage (VWM), 34.2–37.8 V breakdown voltage (VBR) at 1 mA, 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 in automotive sensor protection, industrial I/O interfaces, and DC power rail surge suppression.
For engineers reviewing the P4SMA36AHM3/H datasheet, P4SMA36AHM3/H pinout, P4SMA36AHM3/H application, or P4SMA36AHM3/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), polarity marking convention, and real-world design implications for PCB layout, clamping margin, and reliability under repetitive surge conditions.
Technical Context
The P4SMA36AHM3/H employs a glass-passivated silicon junction optimized for fast response (<1 ns) and low incremental surge resistance, enabling effective suppression of sub-microsecond transients induced by relay switching or motor commutation. Its unidirectional configuration provides forward conduction capability while blocking reverse leakage up to 1.0 µA at 30.8 V.
Rated for 150 °C maximum junction temperature and compliant with J-STD-020 MSL Level 1 (peak reflow 260 °C), it supports automated SMT assembly and meets halogen-free, RoHS-compliant requirements per HM3 suffix. The device operates within -65 °C to +150 °C ambient range and delivers 3.3 W steady-state power dissipation on infinite heatsink at 50 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.8 V - Maximum continuous reverse working voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (min/max) | 34.2 V / 37.8 V at 1 mA - Confirmed breakdown onset range; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 49.9 V at 8.0 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 400 W - Peak pulse power handling with 10/1000 µs waveform; enables robust protection against IEC 61000-4-5 Level 3 surges. |
| IFSM | 40 A - Non-repetitive forward surge current (8.3 ms half-sine); supports temporary overload tolerance in power supply inputs. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance; informs minimum copper pad area (0.2" × 0.2") required for thermal derating. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; suffix HM3 denotes halogen-free compliance. |
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; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR. |
| Anode (unmarked end) | Reference/return path | Typically tied to system ground or lower-potential rail; completes clamping path during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge immunity testing without degradation across ≥1000 pulses at 0.01% duty cycle. |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage overshoot on protected circuits, preserving margin for 3.3 V or 5 V logic-level components. |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking; compatible with high-volume automated assembly lines. |
| Halogen-free & RoHS-compliant (HM3) | Fulfills environmental compliance requirements for automotive and industrial end equipment per EU Directive 2011/65/EU. |
| 150 °C maximum junction temperature | Permits operation in under-hood automotive environments and thermally constrained industrial enclosures. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor signal line and chassis ground to clamp transients before they reach precision amplifier inputs. Use Value: With 49.9 V clamping at 8 A and AEC-Q101 qualification, P4SMA36AHM3/H ensures functional safety compliance and prevents latch-up in 12 V automotive systems. |
Use Scenario: Guarding digital input channels of programmable logic controllers against field-wiring induced surges from solenoid valves or motor contactors. IC Role / Device Role / Timing Role: Standoff-rated TVS installed at terminal block entry point to shunt energy before reaching optocoupler or microcontroller GPIO. Use Value: 30.8 V VWM allows compatibility with 24 V DC control systems while maintaining >20% margin above nominal rail, reducing false triggering. |
| DC Power Rail Surge Suppression | Consumer Power Adapter Input Protection |
|
Use Scenario: Secondary-side overvoltage protection on 36 V DC power supplies feeding motor drivers or LED arrays in factory automation. IC Role / Device Role / Timing Role: Parallel-connected TVS across output capacitor to absorb residual flyback energy from transformer leakage inductance. Use Value: 400 W PPPM rating and 120 °C/W RθJA enable sustained operation at 70 °C ambient with minimal derating when mounted on 5 mm × 5 mm copper pads. |
Use Scenario: Input-stage transient suppression in wall-mounted AC/DC adapters for smart home devices subjected to lightning-induced surges. IC Role / Device Role / Timing Role: First-line defense after bridge rectifier, clamping rectified line spikes before bulk capacitor and primary controller IC. Use Value: Glass-passivated junction ensures stable VBR over lifetime and eliminates parameter drift common in epoxy-encapsulated alternatives. |
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 (Vishay) | Same VWM/VBR/VC, but SMB package (DO-214AA); 600 W PPPM rating; RθJA = 100 °C/W. | Higher power handling and better thermal performance, but 25% larger footprint; requires PCB redesign. | Select when higher surge endurance (>600 W) or improved thermal margin is required and board space permits SMB layout. |
| 1.5SMC36A (ON Semiconductor) | Identical electrical specs (VWM = 30.8 V, VC = 49.9 V), same SMA package; not AEC-Q101 qualified; RoHS-compliant only. | Lacks automotive qualification; suitable for commercial/industrial use where AEC-Q101 is not mandated. | Choose for cost-sensitive non-automotive designs where full automotive reliability validation is unnecessary. |
Compared with P4SMA36AHM3/H, SMBJ36A-E3/52 offers greater surge capacity and thermal efficiency but demands more PCB area, while 1.5SMC36A matches key parameters at lower qualification level - making P4SMA36AHM3/H the optimal choice when halogen-free AEC-Q101 compliance and compact SMA form factor are jointly required.
Availability
P4SMA36AHM3/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O modules, and DC power supply surge protection requiring stable component supply, long-term lifecycle support, and traceable halogen-free sourcing.
Supply support for P4SMA36AHM3/H 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, efficiency, and application-specific optimization.
The P4SMA Series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-reliability transient suppression in automotive, industrial, and telecom infrastructure - balancing clamping performance, thermal robustness, and manufacturability in surface-mount packages.
FAQ
What is the maximum clamping voltage of the P4SMA36AHM3/H under surge conditions?
The P4SMA36AHM3/H has a maximum clamping voltage (VC) of 49.9 V at 8.0 A peak pulse current with a 10/1000 µs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within absolute maximum ratings. The clamping occurs rapidly (<1 ns) due to the device's glass-passivated junction structure.
Is the P4SMA36AHM3/H qualified for automotive applications?
Yes, the P4SMA36AHM3/H 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 temperature cycling, high-temperature reverse bias, and ESD, validating its suitability for under-hood and body-control module applications in passenger vehicles and commercial vehicles.
What does the "HM3" suffix indicate in P4SMA36AHM3/H?
The "HM3" suffix in P4SMA36AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It specifies that the molding compound contains no brominated or chlorinated flame retardants, meets JEDEC J-STD-020 MSL Level 1, and passes whisker testing per JESD 201 Class 2 - fulfilling stringent environmental and reliability requirements for automotive and industrial deployments.
How is polarity identified on the P4SMA36AHM3/H package?
The P4SMA36AHM3/H uses a cathode band marking on the SMA (DO-214AC) package to identify polarity: the banded end is the cathode, which connects to the line being protected, while the unmarked end is the anode, typically tied to ground. This unidirectional configuration ensures proper clamping directionality and prevents unintended conduction during normal operation.
What thermal derating applies to the P4SMA36AHM3/H above 25 °C ambient?
The P4SMA36AHM3/H follows linear thermal derating above 25 °C ambient, as shown in Figure 2 of the Vishay datasheet. Its power dissipation (PD) decreases from 3.3 W at 50 °C on infinite heatsink, and peak pulse power (PPPM) drops to 300 W above 91 V standoff. For reliable operation at 70 °C ambient, design must ensure junction temperature remains ≤150 °C using the specified 0.2" × 0.2" copper pads and RθJA = 120 °C/W.
P4SMA36AHM3/H 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/H FAQ
1.How can I place an order for P4SMA36AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA36AHM3/H 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/H reliable?
The price and inventory of P4SMA36AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA36AHM3/H is usually 5 days.
3.What payment methods are accepted for P4SMA36AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA36AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA36AHM3/H?
P4SMA36AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA36AHM3/H 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/H?
For technical support, including P4SMA36AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA36AHM3/H requirements.
6.How does Aetrix verify that P4SMA36AHM3/H is sourced from the original manufacturer or authorized distributors?
All P4SMA36AHM3/H 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/H meets industry standards.
7.What is the process for return or replacement of P4SMA36AHM3/H?
All P4SMA36AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA36AHM3/H, 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/H part is unused and in its original packaging.
Return procedure for P4SMA36AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA36AHM3/H Tags
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