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Vishay General Semiconductor - Diodes Division P4SMA39CA-M3/5A
- Part No.:
- P4SMA39CA-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA39CA-M3/5A.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,263
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Product details
Overview
P4SMA39CA-M3/5A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in the SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 33.3 V standoff voltage (VWM), 37.1–41.0 V breakdown voltage (VBR) at 1 mA, 53.9 V maximum clamping voltage (VC) at 7.4 A peak pulse current, and 400 W peak pulse power rating with a 10/1000 µs waveform - used to protect MOSFETs, sensor interfaces, and communication lines in industrial and automotive electronics.
For engineers reviewing the P4SMA39CA-M3/5A datasheet, P4SMA39CA-M3/5A pinout, P4SMA39CA-M3/5A application, or P4SMA39CA-M3/5A equivalent, this device delivers verified bidirectional surge suppression with halogen-free RoHS compliance, AEC-Q101 qualification readiness (via HM3 suffix), low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability PCB layouts requiring automated placement and thermal robustness up to +150 °C junction temperature.
Technical Context
The P4SMA39CA-M3/5A operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while its low Rdyn (incremental surge resistance) minimizes voltage overshoot during ESD or lightning-induced surges.
Thermally, it exhibits a typical junction-to-ambient thermal resistance of 120 °C/W on standard 0.2" × 0.2" copper pads and supports repetitive 0.01% duty-cycle pulses. The device is rated for continuous power dissipation of 3.3 W at 50 °C ambient and operates across -65 °C to +150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 33.3 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown) | 37.1–41.0 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping) | 53.9 V at 7.4 A (10/1000 µs) - Peak voltage seen by protected circuit under rated surge; determines downstream component stress. |
| PPPM | 400 W - Peak pulse power handling capability; enables protection against IEC 61000-4-5 Level 3 surges (1 kV/2 Ω). |
| IPPM | 7.4 A - Peak pulse current supported at VC; directly relates to surge energy absorption (E = VC × IPPM × tp). |
| TJ max | +150 °C - Maximum junction temperature; allows operation in under-hood automotive or industrial enclosures without derating. |
| Package | SMA (DO-214AC) - Surface-mount outline with 5.28 mm length, 4.50 mm width, and 2.29 mm height; compatible with standard SMT reflow profiles. |
Pinout & Package
Package: SMA (DO-214AC), bidirectional configuration with no polarity marking - terminals are symmetrical and interchangeable. Device mounts using matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | Either end serves as anode or cathode depending on transient polarity; no band marking required. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional TVS architecture | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 400 W peak pulse power (10/1000 µs) | Supports robust immunity to IEC 61000-4-5 surge events up to 1 kV open-circuit voltage. |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage (<1 µA at VWM) across temperature and life cycle. |
| MSL Level 1, 260 °C peak reflow | Eliminates pre-baking requirement and supports standard lead-free assembly processes. |
| Halogen-free & RoHS-compliant (M3 suffix) | Fulfills environmental compliance for global industrial and automotive supply chains without performance trade-offs. |
Applications
| Industrial Motor Control | Automotive Sensor Interface |
|---|---|
Use Scenario: Protecting gate drivers and feedback signal lines from inductive kickback in 24 V DC motor controllers. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across MOSFET gate-source or op-amp input pins. Use Value: Limits transient voltage to ≤53.9 V, preventing gate oxide rupture and ensuring reliable PWM switching under load dump conditions. |
Use Scenario: Safeguarding LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine bay modules. IC Role / Device Role / Timing Role: Primary surge suppressor on differential or single-ended sensor output traces. Use Value: Withstands ISO 7637-2 Pulse 1/2a/5a waveforms and maintains signal integrity below 33.3 V standby threshold. |
| Telecom Power Input | Consumer USB-C Port Protection |
Use Scenario: Secondary-side transient suppression on 48 V PoE or AC/DC adapter outputs feeding base station radios. IC Role / Device Role / Timing Role: Final-stage clamp before DC-DC converters and ASIC power rails. Use Value: Absorbs 400 W surges without degradation, enabling compliance with GR-1089-CORE telecom immunity requirements. |
Use Scenario: Overvoltage protection on VBUS and CC lines in portable docking stations and multi-port hubs. IC Role / Device Role / Timing Role: Fast-response TVS placed adjacent to USB-C connector to shunt ESD and hot-swap transients. Use Value: Clamps sub-100 ns ESD events to <54 V, preserving USB PD negotiation integrity and preventing port controller latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | Higher VWM (36 V), lower VC (58.1 V at 6.9 A), SMB package (larger footprint, higher thermal mass). | Better suited for 36 V nominal systems with tighter clamping margin; requires PCB layout change due to larger DO-214AA outline. | Select when board space permits larger package and system VWM exceeds 33.3 V. |
| 1.5SMC39CA | Same VWM/VBR/VC, but 1500 W rating (10/1000 µs), larger SMC (DO-214AB) package and 1.5 kW power handling. | Targeted at higher-energy surge environments (e.g., outdoor telecom, solar inverters); not drop-in due to 7.11 mm width vs. SMA's 4.50 mm. | Choose for applications demanding >400 W surge capacity where footprint increase is acceptable. |
Compared with P4SMA39CA-M3/5A, SMBJ36CA offers tighter system voltage margin at the cost of larger size, while 1.5SMC39CA provides 3.75× higher pulse power but requires significant PCB redesign - making P4SMA39CA-M3/5A optimal for space-constrained, 33 V-class industrial and automotive signal-line protection.
Availability
P4SMA39CA-M3/5A is available at Aetrix Electronics and suitable for industrial motor control, automotive sensor interface, telecom power input, and consumer USB-C port protection requiring stable component supply, halogen-free compliance, and AEC-Q101-ready qualification path.
Supply support for P4SMA39CA-M3/5A 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, precision, and application-specific performance.
The P4SMA Series targets cost-sensitive, high-volume surge 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 P4SMA39CA-M3/5A at its rated peak pulse current?
The P4SMA39CA-M3/5A has a maximum clamping voltage (VC) of 53.9 V at 7.4 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during a surge event. The P4SMA39CA-M3/5A maintains this clamping performance consistently across its operational temperature range and lifetime, supporting robust design margins for downstream ICs.
Is P4SMA39CA-M3/5A suitable for automotive applications?
Yes - the P4SMA39CA-M3/5A carries the M3 suffix indicating halogen-free, RoHS-compliant construction, and belongs to the AEC-Q101-qualified P4SMA family (with HE3/HM3 variants). While P4SMA39CA-M3/5A itself is commercial-grade, its design, thermal specs (TJ max = +150 °C), and surge robustness align with automotive subsystem requirements such as body control modules and sensor interfaces. For certified deployment, specify P4SMA39CAHM3_B/I or equivalent AEC-Q101 variant.
How does the bidirectional configuration of P4SMA39CA-M3/5A affect PCB layout?
The P4SMA39CA-M3/5A has no polarity marking and symmetrical terminals, eliminating orientation constraints during placement. This simplifies PCB layout, reduces assembly errors, and enables use on AC-coupled or floating nodes like differential data lines or transformer secondaries. Unlike unidirectional TVS diodes, the P4SMA39CA-M3/5A requires no anode/cathode alignment check - streamlining automated optical inspection and reducing bill-of-materials complexity.
What is the thermal resistance of P4SMA39CA-M3/5A, and how does it impact power derating?
The P4SMA39CA-M3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" copper pads. This value governs steady-state power dissipation limits: at 50 °C ambient, its 3.3 W rated power drops to ~2.2 W at 75 °C ambient. Engineers must apply derating curves from Figure 2 of the datasheet when operating above 25 °C ambient or in enclosed environments - the P4SMA39CA-M3/5A remains functional up to +150 °C junction temperature.
Does P4SMA39CA-M3/5A meet industry surge immunity standards?
Yes - the P4SMA39CA-M3/5A's 400 W peak pulse power rating (10/1000 µs) supports compliance with IEC 61000-4-5 Level 3 (1 kV line-to-earth, 2 Ω source impedance) and ISO 7637-2 Pulse 1/2a/5a when properly laid out with low-inductance traces and adequate copper pour. Its fast response time (<1 ns) and low dynamic resistance ensure effective clamping of ESD (IEC 61000-4-2) and lightning-induced surges - key for P4SMA39CA-M3/5A deployment in industrial and automotive front-end protection networks.
P4SMA39CA-M3/5A 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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 7.4A
- 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)
P4SMA39CA-M3/5A FAQ
1.How can I place an order for P4SMA39CA-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA39CA-M3/5A 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 P4SMA39CA-M3/5A reliable?
The price and inventory of P4SMA39CA-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA39CA-M3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA39CA-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA39CA-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA39CA-M3/5A?
P4SMA39CA-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA39CA-M3/5A 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 P4SMA39CA-M3/5A?
For technical support, including P4SMA39CA-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA39CA-M3/5A requirements.
6.How does Aetrix verify that P4SMA39CA-M3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA39CA-M3/5A 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 P4SMA39CA-M3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA39CA-M3/5A?
All P4SMA39CA-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA39CA-M3/5A, 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 P4SMA39CA-M3/5A part is unused and in its original packaging.
Return procedure for P4SMA39CA-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA39CA-M3/5A Tags
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