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Vishay General Semiconductor - Diodes Division P4SMA36A-M3/61
- Part No.:
- P4SMA36A-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA36A-M3/61.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA36A-M3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients 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 industrial and automotive electronics.
For engineers reviewing the P4SMA36A-M3/61 datasheet, P4SMA36A-M3/61 pinout, P4SMA36A-M3/61 application, or P4SMA36A-M3/61 equivalent, key selection considerations include its unidirectional polarity, halogen-free RoHS-compliant M3 suffix, AEC-Q101 qualification readiness (via HM3 variant), thermal resistance of 120 °C/W, and compatibility with automated SMT placement on standard 0.2" × 0.2" copper pads.
Technical Context
The P4SMA36A-M3/61 operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology for stable breakdown behavior and fast response to ESD and surge events. Its clamping action begins at VWM = 30.8 V and fully engages at VBR = 34.2–37.8 V (tested at 1.0 mA), limiting transient voltages to ≤49.9 V under 8.0 A 10/1000 µs pulses.
It is rated for continuous power dissipation of 3.3 W at 50 °C on infinite heatsink, with maximum junction temperature of +150 °C and thermal resistance RθJA = 120 °C/W. The device supports repetitive surge duty cycle of 0.01 % and meets J-STD-020 MSL Level 1 (peak reflow 260 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 30.8 V - Maximum reverse working voltage before significant leakage; defines normal operating ceiling for protected line. |
| VBR (Breakdown) | 34.2–37.8 V at 1.0 mA - Avalanche conduction onset range; ensures reliable triggering above system operating voltage. |
| VC (Clamping) | 49.9 V at IPPM = 8.0 A - Peak voltage seen by downstream circuit during 10/1000 µs transient; determines protection margin. |
| PPPM | 400 W - Peak pulse power handling per 10/1000 µs waveform; enables robust suppression of IEC 61000-4-5 surges. |
| IFSM | 40 A - Non-repetitive forward surge rating (8.3 ms half-sine); supports inrush or fault-current tolerance in power rails. |
| TJ max | +150 °C - Maximum junction temperature; sets thermal design limits for PCB pad sizing and ambient derating. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance; informs required copper area (0.2" × 0.2") for safe 3.3 W operation. |
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; polarity critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected line's lower-potential side (e.g., GND or return path) | Enables clamping when transient drives cathode above anode beyond VBR; must be routed with low-inductance path to ground plane. |
| Cathode | Current exit point in forward bias; marked with band; connected to protected line's higher-potential side (e.g., VIN, signal rail) | Defines clamping reference; voltage at cathode is limited to ≤49.9 V during surge; requires minimal trace inductance to maintain clamping speed. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Supports Level 4 IEC 61000-4-5 surge immunity (4 kV line-to-ground) without derating on standard PCB pads. |
| Glass passivated chip junction | Ensures stable VBR over lifetime and temperature; eliminates risk of junction degradation under repeated surges. |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT reflow profiles without pre-baking or special handling. |
| AEC-Q101 qualification path (HM3 variant) | Enables drop-in qualification for automotive subsystems (e.g., body control modules) when specified as P4SMA36AHM3_A/H. |
| Halogen-free, RoHS-compliant (M3 suffix) | Fulfills IPC-1752A material declaration requirements and EU environmental compliance for industrial end equipment. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
|
Use Scenario: Protecting microcontroller GPIOs and CAN transceiver power rails from load-dump and inductive switching transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS clamping cathode to battery rail, anode to chassis ground; responds within <1 ns to suppress >100 V spikes. Use Value: Prevents latch-up or gate oxide damage in MCU I/O cells by limiting cathode voltage to ≤49.9 V during 300 ms load-dump events. |
Use Scenario: Safeguarding 24 V DC digital input channels against field-wiring induced surges and relay coil flyback in factory automation controllers. IC Role / Device Role / Timing Role: Placed across input terminal and common rail; conducts only during overvoltage, remaining high-impedance during nominal 24 V operation. Use Value: Maintains input logic integrity by holding voltage below 50 V during 1 kV/0.5 J transients, eliminating need for external series impedance. |
| Consumer Power Adapter Output | Telecom Ethernet PHY Interface |
|
Use Scenario: Secondary-side overvoltage protection on 5–12 V SMPS outputs feeding USB-C PD controllers or display logic. IC Role / Device Role / Timing Role: Cathode tied to regulated output, anode to GND; clamps output overshoot during startup or short-circuit recovery. Use Value: Limits output excursion to ≤49.9 V, preventing damage to downstream USB-PD sink ICs rated for 20 V absolute maximum. |
Use Scenario: Protecting RJ45 magnetics center-taps and PHY supply pins from ESD (IEC 61000-4-2 ±8 kV) and lightning-induced surges on PoE-enabled ports. IC Role / Device Role / Timing Role: Mounted between PHY VDDIO and GND; activated only during transient, with <100 pF junction capacitance minimizing signal distortion. Use Value: Preserves 100BASE-TX signal integrity while suppressing ±15 kV contact ESD events without degrading rise/fall times. |
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 (Bourns) | Same VWM/VBR/VC specs but SMB package (DO-214AA); 600 W PPPM; RθJA = 100 °C/W | Higher power handling and better thermal performance, but 20 % larger footprint than SMA | Select when board space allows and >400 W surge margin is required; not pin-compatible due to different pad layout. |
| 1.5SMC36A (ON Semiconductor) | Same electrical specs, SMC (DO-214AB) package; 1500 W PPPM; RθJA = 60 °C/W; higher IPPM = 27.8 A | Designed for high-energy industrial surges; requires larger copper area and heavier reflow profile | Choose for harsh environments like motor drives where single-event energy exceeds 400 W capability; incompatible pad geometry. |
Compared with SMBJ36A and 1.5SMC36A, the P4SMA36A-M3/61 offers optimal balance of compact SMA footprint, AEC-Q101 upgrade path, and sufficient 400 W surge rating for cost-sensitive consumer and industrial controls - without requiring PCB redesign or thermal derating penalties.
Availability
P4SMA36A-M3/61 is available at Aetrix Electronics and suitable for industrial PLCs, automotive body electronics, consumer power adapters, and telecom interface protection requiring stable component supply, halogen-free compliance, and automated SMT placement support.
Supply support for P4SMA36A-M3/61 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, automotive qualification, and high-volume manufacturability.
The P4SMA Series targets cost-effective, surface-mount transient suppression for power rails and signal lines across automotive, industrial, and consumer markets - engineered for automated assembly, thermal stability, and repeatable clamping performance.
FAQ
What is the maximum clamping voltage of the P4SMA36A-M3/61 under surge conditions?
The P4SMA36A-M3/61 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. Engineers must verify that downstream components tolerate this clamping level with appropriate safety margin. The P4SMA36A-M3/61 maintains this performance across its full operating temperature range.
Is the P4SMA36A-M3/61 suitable for automotive applications?
The P4SMA36A-M3/61 itself is halogen-free and RoHS-compliant but not AEC-Q101 qualified. However, Vishay offers the P4SMA36AHM3_A/H variant - identical electrical specs with AEC-Q101 qualification - for automotive use. For non-automotive industrial or consumer designs, the P4SMA36A-M3/61 delivers full specification compliance including MSL Level 1 and 260 °C reflow capability. Always select HM3-suffixed versions when automotive qualification is mandatory.
How does the P4SMA36A-M3/61 differ from bidirectional TVS diodes like P4SMA36CA?
The P4SMA36A-M3/61 is unidirectional and functions only during reverse-bias overvoltage events, with polarity marked by a cathode band. In contrast, P4SMA36CA is bidirectional and protects against surges of either polarity, making it suitable for AC lines or differential signals. The P4SMA36A-M3/61 offers tighter VBR tolerance and lower leakage at VWM than its bidirectional counterpart, but cannot replace P4SMA36CA in symmetrical protection roles without circuit redesign.
What PCB layout guidelines apply to the P4SMA36A-M3/61 for optimal surge performance?
For optimal transient suppression, mount the P4SMA36A-M3/61 with minimum trace length between cathode and protected node, and anode to solid ground plane - ideally using 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal as specified. Avoid vias or narrow traces in the clamping path to minimize inductance, which could elevate clamped voltage. Thermal relief should be minimized to ensure 3.3 W power dissipation capability at elevated ambient temperatures.
Does the P4SMA36A-M3/61 require derating at elevated ambient temperatures?
Yes - the P4SMA36A-M3/61 must be derated above 25 °C ambient per Figure 2 in the datasheet. At 50 °C, its peak pulse power drops to ~300 W (for VBR > 91 V units) or remains near 400 W for lower-voltage variants; however, the P4SMA36A-M3/61 maintains full 400 W rating up to ~40 °C due to its 36 V rating. Continuous power dissipation (3.3 W) also decreases linearly with junction temperature, requiring thermal analysis for sustained surge duty cycles.
P4SMA36A-M3/61 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA36A-M3/61 FAQ
1.How can I place an order for P4SMA36A-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA36A-M3/61 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 P4SMA36A-M3/61 reliable?
The price and inventory of P4SMA36A-M3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA36A-M3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA36A-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA36A-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA36A-M3/61?
P4SMA36A-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA36A-M3/61 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 P4SMA36A-M3/61?
For technical support, including P4SMA36A-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA36A-M3/61 requirements.
6.How does Aetrix verify that P4SMA36A-M3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA36A-M3/61 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 P4SMA36A-M3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA36A-M3/61?
All P4SMA36A-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA36A-M3/61, 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 P4SMA36A-M3/61 part is unused and in its original packaging.
Return procedure for P4SMA36A-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA36A-M3/61 Tags
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