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Vishay General Semiconductor - Diodes Division P4SMA12CA-E3/61
- Part No.:
- P4SMA12CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA12CA-E3/61.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,552
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Product details
Overview
P4SMA12CA-E3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 12 V breakdown voltage (VBR min/max = 11.4–12.6 V at 1.0 mA), 10.2 V standoff voltage (VWM), and clamps to ≤16.7 V at 24.0 A peak pulse current (10/1000 µs waveform), delivering 400 W peak pulse power for protection of MOSFETs, ICs, and sensor interfaces in industrial and telecom systems.
For engineers reviewing the P4SMA12CA-E3/61 datasheet, P4SMA12CA-E3/61 pinout, P4SMA12CA-E3/61 application, or P4SMA12CA-E3/61 equivalent, this device serves as a RoHS-compliant, AEC-Q101-qualified (via HE3/HM3 variants) transient suppressor with low incremental surge resistance, fast response time, and MSL Level 1 moisture sensitivity - critical for automated SMT assembly and high-reliability board-level ESD/surge protection.
Technical Context
The P4SMA12CA-E3/61 operates bidirectionally with symmetrical clamping characteristics in both polarities, enabling use on AC-coupled or floating signal lines without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while the 120 °C/W junction-to-ambient thermal resistance requires careful PCB copper pad design (0.2" × 0.2") to sustain repetitive 400 W pulses at ≤0.01% duty cycle.
It complies with IEC 61000-4-2 (ESD) and IEC 61000-4-4 (EFT) immunity standards when applied per recommended layout, and its 150 °C maximum junction temperature supports operation in extended industrial ambient conditions. The device exhibits a +0.078 %/°C temperature coefficient of VBR, ensuring predictable voltage drift across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 11.4–12.6 V at 1.0 mA test current - defines precise clamping onset threshold for overvoltage events |
| Standoff Voltage VWM | 10.2 V - maximum continuous working voltage before leakage exceeds 1.0 µA, ensuring no interference during normal operation |
| Clamping Voltage VC | ≤16.7 V at 24.0 A (10/1000 µs) - limits downstream voltage stress to safe levels for 3.3 V/5 V logic and analog circuitry |
| Peak Pulse Power PPPM | 400 W - sustains single transient surges up to 400 W with 10/1000 µs waveform, derated above 25 °C |
| Package | SMA (DO-214AC) - surface-mount, low-profile package compatible with standard SMT reflow profiles and J-STD-020 MSL Level 1 |
| Operating Temperature | −65 °C to +150 °C - enables deployment in automotive under-hood, industrial motor control, and outdoor telecom equipment |
| AEC-Q101 Qualified | Yes (via HE3/HM3 variants) - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, dimensions 4.93 mm × 3.99 mm × 2.29 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node in bidirectional configuration | No marking on bidirectional devices; symmetric conduction path allows placement without orientation constraints |
| Cathode | Current exit terminal in forward bias; common node in bidirectional configuration | No band or marking - device has identical electrical behavior in either direction; polarity-agnostic layout |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals, differential buses (e.g., RS-485), and ungrounded sensor outputs without polarity-sensitive routing |
| 400 W peak pulse power | Handles IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges with margin, supporting robust front-end protection in industrial I/O modules |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes voltage overshoot during transients, preserving timing margins and reducing risk of latch-up in CMOS ICs |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow without baking, simplifying manufacturing for high-volume SMT production |
| RoHS-compliant & halogen-free options | E3 suffix denotes RoHS-compliant commercial grade; M3 suffix adds halogen-free compliance for green electronics requirements |
Applications
| Industrial Sensor Interface Protection | Telecom Line Card Surge Suppression |
|---|---|
|
Use Scenario: Protecting 4–20 mA current loop transmitters and analog sensor outputs (e.g., pressure, temperature) from inductive switching transients and lightning-induced surges on field wiring. IC Role / Device Role: Bidirectional TVS placed across signal and return lines to clamp common-mode and differential transients before they reach precision ADCs or op-amps. Use Value: Maintains signal integrity by limiting transient voltage to ≤16.7 V, preventing damage to 24 V-rated input stages and avoiding system resets during factory automation events. |
Use Scenario: Shielding RS-485/RS-422 data lines in base station remote radio units and DSLAM line cards from EFT bursts and induced surges on long cable runs. IC Role / Device Role: Paired bidirectional TVS diodes on differential pairs to absorb ±1 kV ESD (IEC 61000-4-2) and ±0.5 kV EFT (IEC 61000-4-4) without distorting signal edges. Use Value: Enables >100,000 surge cycles with <1 nA post-stress leakage, ensuring long-term reliability in carrier-grade network infrastructure. |
| Automotive Body Control Module (BCM) | Consumer USB Port ESD Protection |
|
Use Scenario: Safeguarding LIN bus nodes and switch inputs in door modules and lighting controllers against load dump and battery reverse connection transients. IC Role / Device Role: Bidirectional TVS connected between LIN line and ground to clamp negative-going spikes and positive surges simultaneously. Use Value: AEC-Q101 qualification (via P4SMA12CA-HE3 variant) guarantees performance across −40 °C to +125 °C ambient, meeting OEM BCM durability requirements. |
Use Scenario: Adding secondary-level ESD protection on USB 2.0 D+/D− lines behind primary protection, especially in portable audio docks and smart home hubs. IC Role / Device Role: Low-capacitance (≈100 pF at 0 V) bidirectional TVS shunting transient energy away from USB PHY transceivers. Use Value: Clamps ±8 kV contact discharge to <12 V within <1 ns, preventing bit errors and enumeration failures while adding <0.5 pF parasitic capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12CA | Higher 600 W PPPM, larger SMB (DO-214AA) package (4.57 mm × 3.94 mm), 12.2–13.5 V VBR | Better suited for higher-energy surges; requires larger PCB footprint and different pad layout | Select when surge energy exceeds 400 W or when legacy SMB footprint is standardized |
| 1.5KE12CA | Through-hole TO-204AA (DO-41), 1500 W PPPM, 11.4–12.6 V VBR, higher VC (20.1 V) | Designed for chassis-level primary protection; not suitable for dense SMT layouts | Choose for cost-sensitive, non-SMT designs where board space is unconstrained and higher clamping voltage is acceptable |
Compared with SMBJ12CA and 1.5KE12CA, the P4SMA12CA-E3/61 offers optimal balance of compact size, 400 W capability, and low clamping voltage for board-level secondary protection - making it ideal for space-constrained industrial and telecom PCBs requiring automated assembly and MSL-1 compliance.
Availability
P4SMA12CA-E3/61 is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line card surge suppression, automotive body control modules, and consumer USB port ESD protection requiring stable component supply and RoHS-compliant sourcing.
Supply support for P4SMA12CA-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series is engineered for robust transient suppression in surface-mount applications, targeting industrial automation, automotive electronics, and communications infrastructure where compact size, high surge tolerance, and AEC-Q101 readiness are essential.
FAQ
What is the clamping voltage of the P4SMA12CA-E3/61 at its rated peak pulse current?
The P4SMA12CA-E3/61 clamps to a maximum of 16.7 V at 24.0 A peak pulse current (10/1000 µs waveform). This value is measured under standardized test conditions with the device mounted on 0.2" × 0.2" copper pads per terminal, ensuring repeatable performance for design validation and layout verification.
Is the P4SMA12CA-E3/61 suitable for automotive applications?
The P4SMA12CA-E3/61 itself is a commercial-grade RoHS-compliant part; however, the automotive-qualified version is designated P4SMA12CAHE3_A (with HE3 suffix). That variant is AEC-Q101 qualified and meets automotive reliability requirements including temperature cycling, HTRB, and ESD testing - the P4SMA12CA-E3/61 should be used only in non-automotive contexts unless paired with appropriate qualification documentation.
Does the P4SMA12CA-E3/61 have polarity markings on the package?
No, the P4SMA12CA-E3/61 does not have polarity markings because it is a bidirectional TVS diode. Unlike unidirectional types (which feature a cathode band), bidirectional devices such as P4SMA12CA-E3/61 exhibit identical electrical behavior in both directions and require no orientation during placement on the PCB.
What is the maximum operating junction temperature for the P4SMA12CA-E3/61?
The P4SMA12CA-E3/61 has a maximum operating junction temperature of +150 °C, with a storage temperature range of −65 °C to +150 °C. This wide thermal range supports use in harsh environments such as industrial motor drives and outdoor telecom enclosures, provided PCB thermal design maintains junction temperature below this limit under worst-case power dissipation.
How does the P4SMA12CA-E3/61 differ from the unidirectional P4SMA12A-E3/61?
The P4SMA12CA-E3/61 is bidirectional with symmetrical clamping in both polarities and no cathode band, while the P4SMA12A-E3/61 is unidirectional, featuring a cathode band and conducting only in reverse bias. Their VBR, VWM, and VC values are nearly identical, but the CA version enables AC-coupled and floating-line protection without polarity constraints - a key distinction for RS-485 or audio signal paths.
P4SMA12CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
P4SMA12CA-E3/61 FAQ
1.How can I place an order for P4SMA12CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA12CA-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 P4SMA12CA-E3/61 reliable?
The price and inventory of P4SMA12CA-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 P4SMA12CA-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA12CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA12CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA12CA-E3/61?
P4SMA12CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA12CA-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 P4SMA12CA-E3/61?
For technical support, including P4SMA12CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA12CA-E3/61 requirements.
6.How does Aetrix verify that P4SMA12CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA12CA-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 P4SMA12CA-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA12CA-E3/61?
All P4SMA12CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA12CA-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 P4SMA12CA-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA12CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA12CA-E3/61 Tags
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