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Vishay General Semiconductor - Diodes Division P4SMA36CA-E3/5A
- Part No.:
- P4SMA36CA-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA36CA-E3/5A.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA36CA-E3/5A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for clamping voltage transients on signal and power lines. It features a 36 V standoff voltage (VWM), 49.9 V maximum clamping voltage (VC) at 8.0 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) capability with a 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line conditioning.
For engineers reviewing the P4SMA36CA-E3/5A datasheet, P4SMA36CA-E3/5A pinout, P4SMA36CA-E3/5A application, or P4SMA36CA-E3/5A equivalent, key selection criteria include bidirectional clamping symmetry, low incremental surge resistance, AEC-Q101 qualification status, RoHS-compliant SMA (DO-214AC) packaging, and thermal derating behavior above 25 °C ambient.
Technical Context
This TVS operates as a voltage-clamping device in both polarities, leveraging a glass-passivated silicon junction to achieve fast response (<1 ns) and stable breakdown characteristics. Its bidirectional architecture eliminates polarity dependency, enabling direct placement across AC-coupled or differential signal paths without orientation constraints.
Thermal performance is defined by RθJA = 120 °C/W (junction-to-ambient) and RθJL = 30 °C/W (junction-to-lead), with derating applied above 25 °C per Figure 2. The device meets MSL Level 1 per J-STD-020 and supports reflow up to 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 30.8 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown) | 34.2–37.8 V at 1 mA - Tight 10% tolerance ensures predictable turn-on across production lots |
| VC (Clamping) | 49.9 V at 8.0 A IPPM - Limits transient voltage seen by downstream ICs during ESD or inductive switching events |
| PPPM | 400 W (10/1000 µs) - Sustains high-energy surges typical of ISO 7637-2 Pulse 1/2a/5a in automotive environments |
| ID (Leakage) | 1.0 µA max at VWM - Minimizes standby power loss and avoids false triggering in high-impedance circuits |
| TJ max | 150 °C - Enables operation in under-hood automotive and industrial control cabinets without thermal shutdown |
| Package | SMA (DO-214AC) - Surface-mount footprint compatible with automated assembly; 0.208" x 0.157" body size |
Pinout & Package
Package: SMA (DO-214AC), molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | Conducts surge current when voltage falls below -VBR; symmetric with cathode for bidirectional clamping |
| Cathode | Transient current entry (positive half-cycle) | Conducts surge current when voltage exceeds +VBR; identical electrical behavior to anode in CA devices |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - simplifies layout for AC signals and differential buses like RS-485 or CAN |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control and ADAS sensor modules |
| 400 W peak pulse power | Handles ISO 16750-2 load dump surges up to 35 V and 400 W without degradation when mounted on 5 mm × 5 mm copper pads |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage stress on protected ICs - critical for 3.3 V and 5 V logic interfacing with legacy 12 V systems |
| MSL Level 1 moisture sensitivity | Zero floor life limitation - can be stored indefinitely at ≤30 °C/60% RH and assembled without baking prior to reflow |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting analog output pins of pressure/temperature sensors exposed to load dump and jump-start transients in 12 V vehicle networks. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to shunt surge energy before reaching sensor ASIC. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (75 V/300 ms) while limiting clamped voltage to ≤49.9 V - preserving 12-bit ADC accuracy. |
Use Scenario: Guarding RS-485 transceivers against ESD (IEC 61000-4-2 ±15 kV) and cable discharge events in factory automation networks. IC Role / Device Role / Timing Role: Low-capacitance TVS across differential pair (A/B) and common-mode line (GND) to suppress common- and differential-mode transients. Use Value: Junction capacitance <100 pF at VWM enables >10 Mbps data rates without signal distortion; clamps ±30 kV contact ESD to <50 V. |
| Telecom Line Conditioning | Consumer USB Port ESD Protection |
|
Use Scenario: Shielding DSL/ADSL line drivers from lightning-induced surges entering via outdoor copper pairs. IC Role / Device Role / Timing Role: Primary-level TVS placed upstream of gas discharge tube (GDT) in hybrid protection circuit to absorb fast-rising edges. Use Value: Sub-1 ns response time captures initial 100 V/µs rise of induced surges; 400 W rating handles multi-kA induced currents per ITU-T K.20. |
Use Scenario: Safeguarding USB 2.0 D+/D− lines in portable audio docks and smart home hubs against user-handling ESD. IC Role / Device Role / Timing Role: Secondary-level TVS after series impedance, providing final-stage clamping before USB PHY input pins. Use Value: 1.0 µA leakage at 30.8 V prevents bus pull-down; RoHS/E3 compliance meets CE and FCC Class B emissions requirements. |
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/VBR/VC ratings but SMB package (DO-214AA); 600 W PPPM rating; higher RθJA (100 °C/W) | Preferred where higher surge margin is needed and PCB space allows larger 0.260" × 0.175" footprint | Select SMBJ36CA if system-level surge testing requires >400 W margin or existing layout uses SMB pads |
| 1.5SMC36CA | Same electrical specs but SMC package (DO-214AB); 1500 W PPPM; RθJA = 50 °C/W; 1.5 kW rating | Used in high-reliability industrial power supplies and PoE injectors requiring extended surge endurance | Choose 1.5SMC36CA only when thermal management permits larger 0.315" × 0.205" footprint and 1.5 kW surge headroom is mandatory |
Compared with SMBJ36CA and 1.5SMC36CA, P4SMA36CA-E3/5A offers optimal balance of compact SMA size, AEC-Q101 qualification, and 400 W surge handling - making it the preferred choice for space-constrained automotive and consumer electronics where MSL Level 1 and RoHS compliance are required.
Availability
P4SMA36CA-E3/5A is available at Aetrix Electronics and suitable for automotive sensor modules, industrial RS-485 nodes, and telecom line interface cards requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA36CA-E3/5A 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, efficiency, and application-specific optimization.
The P4SMA Series targets cost-sensitive, high-volume transient protection needs in automotive, industrial, and communications equipment - delivering standardized TVS performance in compact, automated-assembly-ready packages.
FAQ
What is the clamping voltage of P4SMA36CA-E3/5A at its rated peak pulse current?
The P4SMA36CA-E3/5A exhibits a maximum clamping voltage (VC) of 49.9 V when subjected to its rated 8.0 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured at 25 °C ambient and confirms the device's ability to limit transient overvoltage to a safe level for downstream 3.3 V or 5 V logic components. The P4SMA36CA-E3/5A maintains this clamping performance across its specified operating temperature range.
Is P4SMA36CA-E3/5A qualified for automotive applications?
Yes, P4SMA36CA-E3/5A is AEC-Q101 qualified when ordered with the HE3 or HM3 suffix (e.g., P4SMA36CAHE3_A). The base P4SMA36CA-E3/5A variant is RoHS-compliant and commercial-grade; however, automotive qualification requires explicit ordering with the HE3/HM3 suffix and revision code. Always verify the full part number and datasheet revision to confirm AEC-Q101 status for P4SMA36CA-E3/5A in your design.
What is the standoff voltage (VWM) and why does it matter for P4SMA36CA-E3/5A?
The standoff voltage (VWM) of P4SMA36CA-E3/5A is 30.8 V - the maximum DC or continuous reverse voltage the device can withstand without entering conduction. This parameter ensures the TVS remains non-conductive during normal operation, preventing leakage-related power loss or signal distortion. For P4SMA36CA-E3/5A, VWM is set ~15% below VBR to provide sufficient margin against false triggering while maintaining robust transient response.
How does the bidirectional nature of P4SMA36CA-E3/5A affect its circuit placement?
The bidirectional design of P4SMA36CA-E3/5A means it has no polarity marking and conducts identically in both directions - eliminating orientation concerns during placement. This allows direct integration across AC-coupled lines, differential buses (e.g., CAN, RS-485), or ungrounded signal paths without risk of reverse-bias damage. Unlike unidirectional TVS diodes, P4SMA36CA-E3/5A requires no cathode alignment check during automated assembly.
What package type does P4SMA36CA-E3/5A use and what are its mounting requirements?
P4SMA36CA-E3/5A uses the SMA (DO-214AC) surface-mount package - measuring 0.208" × 0.157" with a 0.100" lead pitch. Per Vishay specification, optimal thermal and surge performance requires mounting on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. The device is MSL Level 1 and supports lead-free reflow up to 260 °C peak temperature without preconditioning.
P4SMA36CA-E3/5A 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA36CA-E3/5A FAQ
1.How can I place an order for P4SMA36CA-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA36CA-E3/5A 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 P4SMA36CA-E3/5A reliable?
The price and inventory of P4SMA36CA-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA36CA-E3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA36CA-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA36CA-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA36CA-E3/5A?
P4SMA36CA-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA36CA-E3/5A 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 P4SMA36CA-E3/5A?
For technical support, including P4SMA36CA-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA36CA-E3/5A requirements.
6.How does Aetrix verify that P4SMA36CA-E3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA36CA-E3/5A 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 P4SMA36CA-E3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA36CA-E3/5A?
All P4SMA36CA-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA36CA-E3/5A, 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 P4SMA36CA-E3/5A part is unused and in its original packaging.
Return procedure for P4SMA36CA-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA36CA-E3/5A Tags
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