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Vishay General Semiconductor - Diodes Division P4SMA36CAHM3_A/H
- Part No.:
- P4SMA36CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA36CAHM3_A/H.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,000
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Product details
Overview
P4SMA36CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount TRANSZORB® transient voltage suppressor (TVS) diode designed for clamping inductive switching transients and ESD events on signal/power lines. It features a 36 V standoff voltage (VWM), 40.9–45.2 V breakdown voltage (VBR) at 1 mA, 49.9 V maximum clamping voltage (VC) at 8.0 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 µs waveform). It is used to protect MOSFET gates, sensor interfaces, and telecom line drivers.
For engineers reviewing the P4SMA36CAHM3_A/H datasheet, P4SMA36CAHM3_A/H pinout, P4SMA36CAHM3_A/H application, or P4SMA36CAHM3_A/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, SMA (DO-214AC) package dimensions, clamping performance under standardized surge waveforms, and direct alternatives with documented parameter differences.
Technical Context
The P4SMA36CAHM3_A/H operates as a symmetrical bidirectional TVS, exhibiting identical clamping behavior in both polarities-no cathode/anode distinction. Its silicon junction is glass passivated for stable leakage and robust surge endurance, with thermal resistance of 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead).
It meets J-STD-020 MSL Level 1 (peak reflow ≤260 °C), supports 0.01% duty-cycle repetitive surges, and is halogen-free and RoHS-compliant per HM3 suffix. The device is rated for continuous operation from –65 °C to +150 °C junction temperature, with 3.3 W steady-state power dissipation on infinite heatsink at 50 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 36 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 40.9–45.2 V at 1 mA - Voltage at which device transitions into avalanche conduction; ensures reliable turn-on during transients. |
| VC (Clamping Voltage) | 49.9 V at 8.0 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; determines safe overvoltage margin for downstream ICs. |
| PPPM (Peak Pulse Power) | 400 W - Surge energy handling capability under standard 10/1000 µs waveform; sufficient for IEC 61000-4-5 Level 3 (1 kV/2 Ω) events. |
| ID (Reverse Leakage) | 1.0 µA max at 36 V - Low leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| TJ max | +150 °C - Enables use in under-hood automotive, industrial motor drives, and enclosed power supplies without derating. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress test requirements including HTGB, HTRB, and temperature cycling. |
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. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); mounting pad layout per Vishay recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminals | No polarity marking; interchangeable connection-enables placement without orientation check in PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Supports robust protection against lightning-induced surges and inductive kickback in 24 V industrial control systems. |
| Low clamping ratio (VC/VBR ≈ 1.17) | Minimizes overvoltage stress on protected ICs-critical for 3.3 V or 5 V logic interfacing with higher-voltage domains. |
| MSL Level 1 moisture sensitivity | Enables direct placement without baking; compatible with standard SMT reflow profiles up to 260 °C peak. |
| Halogen-free & RoHS-compliant (HM3) | Fulfills environmental compliance for global OEMs and meets IPC-1752 material declaration requirements. |
| 150 °C maximum junction temperature | Permits operation in engine control units (ECUs), power inverters, and sealed enclosures without thermal derating. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across signal line and ground, responding within <1 ns to transients. Use Value: Prevents latch-up or gate oxide damage in 3.3 V microcontrollers and analog front-ends while maintaining signal fidelity at 1 Mbps CAN speeds. |
Use Scenario: Shielding 24 V digital input modules from relay coil flyback and field wiring surges in factory automation cabinets. IC Role / Device Role / Timing Role: Primary overvoltage clamp on dry-contact inputs, absorbing >100 A surge currents when paired with series impedance. Use Value: Eliminates need for external RC snubbers; reduces BOM count and improves long-term reliability in dusty, high-vibration environments. |
| Telecom Line Driver Protection | Consumer Appliance Motor Control |
Use Scenario: Safeguarding RS-485 transceivers and Ethernet PHYs against induced surges on outdoor cabling in security or building management systems. IC Role / Device Role / Timing Role: Secondary-level TVS placed after primary gas discharge tube (GDT), providing fast, low-clamp backup protection. Use Value: Limits residual voltage to <50 V during 10/1000 µs surges-within safe operating area of ISO 8802-3 compliant PHYs. |
Use Scenario: Clamping back-EMF spikes from brushed DC motors in washing machines, HVAC blowers, and robotic vacuum cleaners. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor across motor terminals, conducting only during commutation spikes. Use Value: Extends MCU GPIO lifetime and prevents false resets caused by radiated noise coupling into control logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | Same VWM (36 V), but SMB package (DO-214AA); 600 W PPPM rating; RθJA = 85 °C/W. | Higher power handling and better thermal performance, but 25 % larger footprint than SMA. | Select SMBJ36CA when surge repetition rate exceeds 0.01 % or board space allows larger package. |
| 1.5KE36CA | Through-hole DO-15 package; same VWM/VBR/VC specs; 1500 W PPPM; higher IFSM (200 A). | Designed for manual assembly or high-energy legacy systems; not suitable for automated SMT lines. | Choose 1.5KE36CA only for prototyping, repair, or non-SMT production where leaded components are accepted. |
Compared with P4SMA36CAHM3_A/H, SMBJ36CA offers superior thermal dissipation and surge margin in space-tolerant designs, while 1.5KE36CA provides higher single-pulse robustness but sacrifices SMT compatibility and board density-making P4SMA36CAHM3_A/H optimal for cost-sensitive, high-volume automotive and industrial SMT assemblies.
Availability
P4SMA36CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line drivers, and consumer appliance motor controls requiring stable component supply, AEC-Q101 validation, and halogen-free compliance.
Supply support for P4SMA36CAHM3_A/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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The P4SMA Series targets cost-effective, high-volume transient suppression in automotive, industrial, and telecom applications-designed for automated placement, robust surge immunity, and long-term stability under thermal cycling.
FAQ
What is the clamping voltage of P4SMA36CAHM3_A/H at its rated peak pulse current?
The P4SMA36CAHM3_A/H has a maximum clamping voltage (VC) of 49.9 V at 8.0 A peak pulse current (IPPM), tested with a 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and ensures protected circuits remain below critical overvoltage thresholds during standardized surge events. The P4SMA36CAHM3_A/H achieves this with low incremental surge resistance and fast response time.
Is P4SMA36CAHM3_A/H suitable for automotive applications?
Yes, P4SMA36CAHM3_A/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction validated for automotive use. It is rated for –65 °C to +150 °C junction temperature and meets MSL Level 1, making it appropriate for engine control units, body electronics, and ADAS sensor interfaces. The P4SMA36CAHM3_A/H also complies with JESD201 Class 2 whisker resistance testing.
How does the bidirectional design of P4SMA36CAHM3_A/H affect PCB layout?
The P4SMA36CAHM3_A/H has no polarity marking and functions identically in both directions, eliminating orientation constraints during placement. This simplifies PCB layout, reduces assembly errors, and enables symmetric routing on differential or AC-coupled lines. Unlike unidirectional TVS diodes, the P4SMA36CAHM3_A/H requires no cathode band alignment-ideal for high-speed automated pick-and-place processes.
What is the maximum steady-state power dissipation for P4SMA36CAHM3_A/H?
The P4SMA36CAHM3_A/H has a maximum steady-state power dissipation (PD) of 3.3 W when mounted on an infinite heatsink at TA = 50 °C. In typical PCB layouts with 0.2" × 0.2" copper pads per terminal, derating applies above 25 °C ambient-consult Figure 2 in the Vishay datasheet (Doc. #88367) for precise thermal curves. The P4SMA36CAHM3_A/H's RθJA of 120 °C/W informs thermal design margins.
Does P4SMA36CAHM3_A/H meet UL recognition standards?
Yes, P4SMA36CAHM3_A/H is Underwriters Laboratory (UL) recognized under file number E136766 for both unidirectional and bidirectional configurations, classified per UL 497B for signal line protectors. This certification validates its safety performance in end-equipment requiring UL listing, including industrial controllers and telecom infrastructure. The P4SMA36CAHM3_A/H maintains this recognition across its full temperature and surge rating envelope.
P4SMA36CAHM3_A/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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)
P4SMA36CAHM3_A/H FAQ
1.How can I place an order for P4SMA36CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA36CAHM3_A/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 P4SMA36CAHM3_A/H reliable?
The price and inventory of P4SMA36CAHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA36CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA36CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA36CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA36CAHM3_A/H?
P4SMA36CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA36CAHM3_A/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 P4SMA36CAHM3_A/H?
For technical support, including P4SMA36CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA36CAHM3_A/H requirements.
6.How does Aetrix verify that P4SMA36CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA36CAHM3_A/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 P4SMA36CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA36CAHM3_A/H?
All P4SMA36CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA36CAHM3_A/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 P4SMA36CAHM3_A/H part is unused and in its original packaging.
Return procedure for P4SMA36CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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