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Vishay General Semiconductor - Diodes Division P4SMA39CA-M3/61
- Part No.:
- P4SMA39CA-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA39CA-M3/61.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,940
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Product details
Overview
P4SMA39CA-M3/61 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 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 capability with a 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line receivers.
For engineers reviewing the P4SMA39CA-M3/61 datasheet, P4SMA39CA-M3/61 pinout, P4SMA39CA-M3/61 application, or P4SMA39CA-M3/61 equivalent, this device delivers verified bidirectional surge suppression in SMA (DO-214AC) package with AEC-Q101 qualification, halogen-free RoHS compliance, and MSL Level 1 moisture sensitivity - critical for high-reliability board-level ESD and lightning transient protection.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling robust protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, while the 120 °C/W junction-to-ambient thermal resistance supports operation up to +150 °C junction temperature under defined PCB pad layout.
The device meets UL 497B recognition (QVGQ2) and is rated for repetitive 0.01% duty cycle surges. Clamping performance is validated per IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (surge), with 1.0 µA max reverse leakage at VWM and 0.1 %/°C typical VBR temperature coefficient - ensuring predictable behavior across automotive and industrial ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 33.3 V - Maximum continuous operating voltage before conduction begins; defines safe signal swing margin. |
| VBR (Breakdown) | 37.1–41.0 V at 1 mA - Confirmed symmetrical breakdown threshold in both directions; enables precise overvoltage triggering. |
| VC (Clamping) | 53.9 V at 7.4 A (10/1000 µs) - Measured voltage across device during surge; limits downstream IC stress to safe levels. |
| PPPM | 400 W - Peak pulse power handling capacity; supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge events. |
| ID (Leakage) | 1.0 µA max at VWM - Minimal signal path loading; preserves integrity of high-impedance analog or digital inputs. |
| TJ max | +150 °C - Enables use in under-hood automotive or enclosed industrial enclosures without derating. |
| Package | SMA (DO-214AC) - Standardized SMT footprint (5.0 mm × 5.0 mm copper pads); compatible with automated reflow assembly. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical anode/cathode pair.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either polarity) | Accepts surge current during positive or negative overvoltage events; no fixed polarity reference required. |
| Cathode | Transient current exit (either polarity) | Completes low-impedance path to ground or return rail; functions identically to Anode due to bidirectional symmetry. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded sensor outputs without polarity concerns. |
| 400 W peak pulse power | Withstands IEC 61000-4-5 surge test conditions (4 kV open-circuit, 2 Ω source impedance) without degradation. |
| AEC-Q101 qualified | Validated for automotive applications including engine control modules, ADAS camera links, and body electronics. |
| Halogen-free & RoHS-compliant (M3 suffix) | Meets global environmental regulations and JESD201 Class 2 whisker resistance for long-term solder joint reliability. |
| MSL Level 1 (260 °C peak) | Allows standard reflow soldering without pre-baking; simplifies manufacturing and reduces process risk. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and chassis ground, responding within <1 ns to suppress spikes above 33.3 V. Use Value: Prevents latch-up or gate oxide damage in microcontrollers and signal conditioners exposed to ±100 V transients in 12 V vehicle systems. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., SN65HVD230) against ESD and induced surges in factory automation networks. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF at 0 V) shunt protector across A/B differential pair, clamping common-mode overvoltages. Use Value: Maintains signal integrity up to 10 Mbps while limiting transient energy to <54 V - below RS-485 receiver absolute maximum rating. |
| Telecom Line Receiver Input | Consumer USB Port ESD Clamp |
|
Use Scenario: Shielding ADSL/VDSL line interface ICs (e.g., LMX2531) from lightning-induced surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Primary front-end TVS in series with gas discharge tube (GDT) secondary protection; handles fast-rising 10/1000 µs surges. Use Value: Limits clamped voltage to 53.9 V, allowing downstream GDT to trigger at higher energy thresholds without overstressing IC input stages. |
Use Scenario: Adding secondary-level ESD protection to USB 2.0 data lines (D+/D−) in set-top boxes and smart displays. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) shunt element placed adjacent to connector, diverting >8 kV HBM ESD pulses. Use Value: Achieves <1 µA leakage at 3.3 V nominal supply - avoids signal attenuation or false detection in high-speed data paths. |
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), same SMA package, 600 W PPPM rating - larger silicon die with lower clamping ratio (VC/VBR ≈ 1.45 vs. 1.42). | Preferred where higher standoff margin is needed (e.g., 36 V nominal rails), but requires verification of PCB trace inductance impact on clamping speed. | Select SMBJ36CA when system VCC exceeds 33.3 V and surge energy may exceed 400 W; confirm thermal dissipation with 100 mm² copper pour. |
| 1.5KE39CA | Through-hole DO-201 package, identical VWM/VBR/VC specs, 1500 W PPPM - significantly larger footprint and manual assembly requirement. | Suitable for prototyping or legacy through-hole designs; not viable for high-density SMT production. | Choose 1.5KE39CA only for hand-soldered evaluation boards or repair scenarios where SMA rework is impractical. |
Compared with P4SMA39CA-M3/61, SMBJ36CA offers higher surge margin but reduced layout flexibility, while 1.5KE39CA provides greater power handling at the cost of modern SMT compatibility - making P4SMA39CA-M3/61 optimal for space-constrained, high-volume automotive and industrial PCBs requiring AEC-Q101 and halogen-free compliance.
Availability
P4SMA39CA-M3/61 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial RS-485 gateways, and telecom line interface cards requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA39CA-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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The P4SMA Series is engineered for board-level transient suppression in harsh environments - delivering AEC-Q101-qualified, halogen-free TVS diodes optimized for automated SMT assembly and high-surge immunity in safety-critical systems.
FAQ
What is the maximum clamping voltage of the P4SMA39CA-M3/61 under a 10/1000 µs surge?
The P4SMA39CA-M3/61 has a maximum clamping voltage (VC) of 53.9 V when subjected to a 7.4 A peak pulse current with a 10/1000 µs waveform. This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88367, Rev. 09-Jan-2024) and represents the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within their absolute maximum ratings.
Is the P4SMA39CA-M3/61 suitable for automotive applications?
Yes, the P4SMA39CA-M3/61 is AEC-Q101 qualified and explicitly listed in Vishay's automotive-grade ordering codes (HM3 suffix). It operates from –65 °C to +150 °C, meets UL 497B recognition, and is validated for use in engine control units, ADAS camera interfaces, and body electronics - fulfilling requirements for transient immunity, thermal stability, and long-term reliability in automotive environments.
Does the P4SMA39CA-M3/61 have polarity markings on the package?
No, the P4SMA39CA-M3/61 is a bidirectional TVS diode and carries no polarity marking on the SMA (DO-214AC) package. Its symmetrical construction means either terminal functions identically as anode or cathode depending on transient polarity - eliminating orientation errors during automated placement and simplifying layout for differential or AC-coupled signal lines.
What is the standoff voltage (VWM) specification for the P4SMA39CA-M3/61?
The standoff voltage (VWM) for the P4SMA39CA-M3/61 is 33.3 V - the maximum DC or continuous RMS voltage that can be applied without causing significant conduction (<1.0 µA leakage). This parameter defines the operational window between normal signal levels and transient activation, ensuring minimal interference with 24 V industrial or 32 V automotive supply rails.
How does the M3 suffix affect the P4SMA39CA-M3/61's compliance profile?
The M3 suffix on P4SMA39CA-M3/61 indicates halogen-free, RoHS-compliant construction meeting JESD201 Class 2 whisker resistance and UL 94 V-0 flammability standards. Unlike E3-suffix variants, M3 devices eliminate brominated flame retardants and antimony trioxide, satisfying strict environmental mandates for consumer, medical, and export-bound electronics without compromising electrical performance or thermal robustness.
P4SMA39CA-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:
- -
- 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-M3/61 FAQ
1.How can I place an order for P4SMA39CA-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA39CA-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 P4SMA39CA-M3/61 reliable?
The price and inventory of P4SMA39CA-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 P4SMA39CA-M3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA39CA-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA39CA-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA39CA-M3/61?
P4SMA39CA-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA39CA-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 P4SMA39CA-M3/61?
For technical support, including P4SMA39CA-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA39CA-M3/61 requirements.
6.How does Aetrix verify that P4SMA39CA-M3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA39CA-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 P4SMA39CA-M3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA39CA-M3/61?
All P4SMA39CA-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA39CA-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 P4SMA39CA-M3/61 part is unused and in its original packaging.
Return procedure for P4SMA39CA-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA39CA-M3/61 Tags
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