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Vishay General Semiconductor - Diodes Division P4SMA12A-E3/61
- Part No.:
- P4SMA12A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA12A-E3/61.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,698
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Product details
Overview
P4SMA12A-E3/61 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 12 V breakdown voltage (VBR = 11.4–12.6 V at 1 mA), 10.2 V maximum standoff voltage (VWM), 16.7 V clamping voltage (VC) at 24.0 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 P4SMA12A-E3/61 datasheet, P4SMA12A-E3/61 pinout, P4SMA12A-E3/61 application, or P4SMA12A-E3/61 equivalent, this device delivers verified transient suppression performance in compact SMA packaging with AEC-Q101 qualification support, RoHS compliance, and MSL Level 1 moisture sensitivity - critical for high-reliability board-level ESD and surge protection design.
Technical Context
The P4SMA12A-E3/61 operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold (11.4–12.6 V). Its glass-passivated junction ensures stable VBR tolerance and low leakage (<1.0 µA at 10.2 V), while fast response time (<1 ns) enables effective suppression of ESD and lightning-induced transients.
Thermal performance is defined by RθJA = 120 °C/W and RθJL = 30 °C/W, with maximum junction temperature rated at +150 °C. It supports repetitive surge duty cycle of 0.01 % and meets UL 94 V-0 flammability requirements in its molded SMA package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at 1.0 mA - defines precise clamping onset threshold for overvoltage detection |
| VWM | 10.2 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 16.7 V at 24.0 A - clamped voltage during 400 W transient, limiting stress on downstream components |
| IPPM | 24.0 A with 10/1000 µs waveform - peak surge current handling capacity under standard test condition |
| PPPM | 400 W - peak pulse power dissipation capability, derated above 25 °C per Fig. 2 |
| ID @ VWM | <1.0 µA - ultra-low reverse leakage preserves signal integrity and battery life in standby circuits |
| TJ max | +150 °C - enables operation in under-hood automotive and industrial ambient environments |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12 V rail or signal input); conducts during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 surge events without thermal runaway |
| Glass passivated chip junction | Ensures stable VBR tolerance, low leakage, and long-term reliability under thermal cycling |
| AEC-Q101 qualified option available | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| MSL Level 1, 260 °C reflow compatible | Supports standard SMT assembly without pre-baking or special handling |
| UL 94 V-0 flammability rating | Meets safety standards for enclosure-integrated protection in industrial and consumer end equipment |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting microcontroller GPIOs and CAN transceiver power rails from load dump and inductive switching spikes in vehicle BCMs. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between 12 V supply and ground, triggered within nanoseconds upon overvoltage. Use Value: Limits transient voltage to ≤16.7 V, preventing latch-up or permanent damage to 5 V/3.3 V logic interfaces powered from regulated 12 V supplies. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers exposed to field wiring surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input terminals to shunt energy before reaching optocoupler or Schmitt trigger input stage. Use Value: Withstands 400 W pulses while maintaining <1 µA leakage at 24 V nominal, ensuring accurate logic level detection during normal operation. |
| Consumer Appliance Motor Drive Interface | Telecom Base Station Sensor Signal Line |
Use Scenario: Shielding MCU analog/digital pins interfacing with brushed DC motor drivers in washing machines and HVAC systems. IC Role / Device Role / Timing Role: Localized TVS mounted directly at motor driver IC output pins to suppress commutation-induced transients. Use Value: Clamps 10/1000 µs surges to 16.7 V, preserving ADC reference stability and preventing false triggering of overcurrent fault logic. |
Use Scenario: Protecting RS-485 transceiver data lines and environmental sensor inputs (temperature/humidity) in outdoor telecom cabinets. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; P4SMA12A-E3/61 used on 12 V bias rails feeding sensors, not data lines. Use Value: Provides 10.2 V working margin above typical 9–10 V sensor supply, enabling reliable operation during brownout conditions while suppressing lightning-induced surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A-E3/5A | Same SMA package, identical VBR (11.4–12.6 V), but rated for 400 W with 8.3 ms half-sine surge (not 10/1000 µs); higher IFSM = 50 A vs. 40 A | Better suited for AC line or transformer-coupled surge events; less optimized for fast ESD/clamp response | Select SMAJ12A-E3/5A when primary threat is longer-duration surges (e.g., IEC 61000-4-4 burst), not fast transients |
| 1.5SMC12A | Higher-power SMC package (1500 W PPPM), same VBR range, larger footprint (7.11 × 6.22 mm vs. SMA's 4.5 × 2.79 mm) | Used where PCB space allows and higher single-event energy absorption is required (e.g., front-end power entry) | Choose 1.5SMC12A only if system-level testing confirms need for >400 W clamping; otherwise P4SMA12A-E3/61 offers superior density and cost efficiency |
Compared with SMAJ12A-E3/5A and 1.5SMC12A, the P4SMA12A-E3/61 delivers optimal balance of compact size, precise 12 V clamping, and 400 W 10/1000 µs surge capability - making it the preferred choice for space-constrained, high-volume industrial and automotive PCB designs requiring validated TVS performance without over-engineering.
Availability
P4SMA12A-E3/61 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, and consumer appliance motor control systems requiring stable component supply, RoHS-compliant sourcing, and AEC-Q101 traceability.
Supply support for P4SMA12A-E3/61 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, TVS devices, and optoelectronics with emphasis on reliability, precision, and application-specific validation.
The P4SMA Series was developed for high-density, automated SMT deployment in harsh-environment electronics - delivering consistent transient suppression performance across commercial, industrial, and automotive temperature ranges.
FAQ
What is the maximum clamping voltage of the P4SMA12A-E3/61 under standard test conditions?
The P4SMA12A-E3/61 has a maximum clamping voltage (VC) of 16.7 V at 24.0 A peak pulse current with a 10/1000 µs waveform. This value is measured per JEDEC standards and reflects the actual voltage seen by protected circuitry during transient events. The P4SMA12A-E3/61 maintains this clamping performance across its full operating temperature range, ensuring predictable protection behavior in real-world applications.
Is the P4SMA12A-E3/61 suitable for automotive applications?
Yes - the P4SMA12A-E3/61 is RoHS-compliant and supports AEC-Q101 qualification via the HE3/HM3 suffix variants (e.g., P4SMA12AHE3_A). While the base P4SMA12A-E3/61 itself is commercial-grade, its construction - including glass-passivated junction, MSL Level 1 rating, and 150 °C TJ max - aligns with automotive environmental requirements. For certified automotive use, specify the HE3-suffixed version of the P4SMA12A-E3/61.
How does the P4SMA12A-E3/61 differ from bidirectional TVS diodes like P4SMA12CA?
The P4SMA12A-E3/61 is unidirectional and functions only in reverse breakdown, with polarity marked by a cathode band. In contrast, P4SMA12CA is bidirectional and symmetrical - suitable for AC signal lines or differential buses. The P4SMA12A-E3/61 offers tighter VBR tolerance (±5 %) and lower leakage (<1 µA) than its bidirectional counterpart, making it preferable for DC power rail protection where forward conduction must be avoided.
What is the thermal resistance of the P4SMA12A-E3/61, and how does it affect layout design?
The P4SMA12A-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead (RθJL) of 30 °C/W. These values assume mounting on 0.2" × 0.2" copper pads per terminal. To maintain safe junction temperatures during repetitive surges, PCB layout must provide adequate copper area and avoid thermal bottlenecks - especially critical when using the P4SMA12A-E3/61 in high-duty-cycle industrial environments.
Can the P4SMA12A-E3/61 be used in parallel for higher surge current handling?
No - the P4SMA12A-E3/61 is not recommended for parallel operation due to VBR mismatch (±5 % tolerance), which causes uneven current sharing and potential thermal runaway. For higher surge ratings, select a single higher-power device such as 1.5SMC12A or SMAJ12A-E3/5A. The P4SMA12A-E3/61 is engineered for discrete point-of-use protection, not scalable stacking.
P4SMA12A-E3/61 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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 24A
- 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)
P4SMA12A-E3/61 FAQ
1.How can I place an order for P4SMA12A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA12A-E3/61 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 P4SMA12A-E3/61 reliable?
The price and inventory of P4SMA12A-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA12A-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA12A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA12A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA12A-E3/61?
P4SMA12A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA12A-E3/61 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 P4SMA12A-E3/61?
For technical support, including P4SMA12A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA12A-E3/61 requirements.
6.How does Aetrix verify that P4SMA12A-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA12A-E3/61 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 P4SMA12A-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA12A-E3/61?
All P4SMA12A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA12A-E3/61, 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 P4SMA12A-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA12A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA12A-E3/61 Tags
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