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Vishay General Semiconductor - Diodes Division P4SMA20CA-E3/61
- Part No.:
- P4SMA20CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA20CA-E3/61.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,295
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Product details
Overview
P4SMA20CA-E3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P4SMA series, designed for clamping voltage transients on signal and power lines. It features a 20 V standoff voltage (VWM), 22.2 V minimum breakdown voltage (VBR), 27.7 V maximum clamping voltage (VC) at 14.4 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the P4SMA20CA-E3/61 datasheet, P4SMA20CA-E3/61 pinout, P4SMA20CA-E3/61 application, or P4SMA20CA-E3/61 equivalent, key selection criteria include bidirectional clamping capability, SMA (DO-214AC) package compatibility, 150 °C max junction temperature, low incremental surge resistance, and AEC-Q101 qualification status for automotive-grade reliability.
Technical Context
The P4SMA20CA-E3/61 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), enabling protection against ESD, lightning-induced surges, and inductive switching spikes.
It delivers 400 W peak pulse power (10/1000 µs) at 25 °C, derated linearly above TA = 25 °C per Fig. 2, with thermal resistance RθJA = 120 °C/W and RθJL = 30 °C/W. The device meets MSL Level 1 per J-STD-020 and supports reflow soldering up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20 V - Maximum continuous reverse working voltage before clamping begins |
| VBR (Breakdown Voltage) | 22.2–24.6 V at 1 mA - Confirmed avalanche onset range for reliable transient detection |
| VC (Clamping Voltage) | 27.7 V at 14.4 A IPPM - Peak voltage seen by protected circuit during worst-case 10/1000 µs surge |
| PPPM (Peak Pulse Power) | 400 W - Sustains 10/1000 µs transients without failure under specified mounting conditions |
| IR (Reverse Leakage) | 1.0 µA max at 20 V - Ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max | 150 °C - Enables operation in under-hood automotive and industrial environments with elevated ambient temperatures |
| Package | SMA (DO-214AC) - Surface-mount footprint compatible with automated placement and IPC-7351B standard land patterns |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1, 260 °C reflow peak.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Connected to ground or common reference; symmetrical with cathode for AC-coupled protection |
| Cathode | Transient return path (bidirectional) | No polarity marking; electrically identical to anode in bidirectional configuration |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signal lines, differential buses, and ungrounded interfaces without polarity concerns |
| 400 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) when properly mounted on 5.0 mm × 5.0 mm copper pads |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage across temperature and lifetime stress conditions |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Low profile SMA package | 0.208" × 0.157" footprint saves board space while supporting high-volume SMT assembly and reflow compatibility |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair to clamp ±25 V transients within 1 ns. Use Value: Prevents latch-up or permanent damage to transceiver ICs while maintaining signal integrity below 27.7 V clamping threshold. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring surges. IC Role / Device Role / Timing Role: Parallel-connected TVS on each input channel to shunt induced transients before reaching optocoupler inputs. Use Value: Enables robust operation in factory-floor environments with frequent relay switching and motor drive noise. |
| Consumer Audio Interface Protection | Telecom Line Card Surge Suppression |
Use Scenario: Shielding analog audio line drivers (e.g., headphone amps) from ESD events during user handling. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed at connector interface to suppress ±8 kV contact discharge per IEC 61000-4-2. Use Value: Maintains audio fidelity with <1 pF junction capacitance at VWM and prevents pop/noise artifacts during ESD events. |
Use Scenario: Front-end protection of DSL or POTS line interface ICs against lightning-induced surges on outside plant wiring. IC Role / Device Role / Timing Role: Primary clamping device in hybrid protection circuit, coordinated with gas discharge tube (GDT) for staged energy handling. Use Value: Limits let-through voltage to <30 V during 10/1000 µs surges, preserving LSI front-end integrity per GR-1089-CORE. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20CA | 600 W PPPM rating, larger SMB (DO-214AA) package, higher VC (32.4 V at 12.3 A) | Better suited for higher-energy surges; requires larger PCB area and different pad layout | Select when system-level surge testing exceeds IEC 61000-4-5 Level 4 or when higher clamping margin is acceptable |
| 1.5KE20CA | 1500 W PPPM, axial-leaded DO-201AD package, higher VC (36.5 V at 32.8 A), slower response due to lead inductance | Designed for board-edge or chassis-level protection; not suitable for high-speed signal lines | Choose for cost-sensitive, non-SMT applications where board space and layout flexibility outweigh speed requirements |
Compared with SMBJ20CA and 1.5KE20CA, the P4SMA20CA-E3/61 offers optimal balance of compact SMA footprint, 400 W surge handling, and sub-28 V clamping-making it ideal for space-constrained, high-density PCBs requiring automotive-grade reliability without sacrificing response speed.
Availability
P4SMA20CA-E3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and consumer audio equipment requiring stable component supply, RoHS compliance, and AEC-Q101 qualification.
Supply support for P4SMA20CA-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, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The P4SMA series was developed for high-reliability transient suppression in automotive, industrial, and telecom systems-prioritizing low clamping voltage, fast response, and robust surge endurance in surface-mount form factors.
FAQ
What is the clamping voltage of P4SMA20CA-E3/61 at its rated peak pulse current?
The P4SMA20CA-E3/61 has a maximum clamping voltage (VC) of 27.7 V at 14.4 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured with the device mounted on 0.2" × 0.2" copper pads per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during surge events. The P4SMA20CA-E3/61 maintains this clamping performance across its full operating temperature range.
Is P4SMA20CA-E3/61 suitable for automotive applications?
Yes, P4SMA20CA-E3/61 is AEC-Q101 qualified when ordered with HE3 or HM3 suffixes (e.g., P4SMA20CAHE3_A). The base P4SMA20CA-E3/61 is RoHS-compliant and commercial-grade; for automotive use, confirm ordering code includes HE3/HM3 and revision suffix (e.g., _A). The P4SMA20CA-E3/61 meets stress test requirements for temperature cycling, humidity, and mechanical shock per AEC-Q101.
How does the bidirectional design of P4SMA20CA-E3/61 affect its circuit implementation?
The bidirectional design of P4SMA20CA-E3/61 eliminates polarity marking and allows placement across any two nodes subject to differential transients-such as RS-485 lines, USB D+/D−, or audio balanced pairs. Unlike unidirectional TVS diodes, the P4SMA20CA-E3/61 conducts symmetrically in both directions, ensuring equal clamping for positive and negative surges without requiring orientation verification during assembly.
What is the thermal resistance of P4SMA20CA-E3/61, and how does it impact power dissipation?
The P4SMA20CA-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead resistance (RθJL) of 30 °C/W. At 25 °C ambient, its 3.3 W steady-state power dissipation (PD) is limited by self-heating; derating is required above 25 °C per Fig. 2. The P4SMA20CA-E3/61 relies on PCB copper mass for heat spreading-minimum 5.0 mm × 5.0 mm pads per terminal are recommended for full 400 W pulse rating.
Does P4SMA20CA-E3/61 have a defined junction capacitance, and is it suitable for high-speed data lines?
Junction capacitance for P4SMA20CA-E3/61 is not explicitly specified in the provided documentation, but typical values for P4SMA-series bidirectional devices at VWM ≈ 20 V fall below 100 pF (measured at 1 MHz, 50 mVp-p). While usable for low-to-moderate speed interfaces like CAN, RS-232, or analog sensors, the P4SMA20CA-E3/61 is not optimized for >100 Mbps serial links; for USB 2.0 or HDMI, lower-capacitance TVS arrays are preferred. The P4SMA20CA-E3/61 remains appropriate for most industrial and automotive signal protection where bandwidth is ≤10 MHz.
P4SMA20CA-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):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 14.4A
- 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)
P4SMA20CA-E3/61 FAQ
1.How can I place an order for P4SMA20CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA20CA-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 P4SMA20CA-E3/61 reliable?
The price and inventory of P4SMA20CA-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 P4SMA20CA-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA20CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA20CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA20CA-E3/61?
P4SMA20CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA20CA-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 P4SMA20CA-E3/61?
For technical support, including P4SMA20CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA20CA-E3/61 requirements.
6.How does Aetrix verify that P4SMA20CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA20CA-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 P4SMA20CA-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA20CA-E3/61?
All P4SMA20CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA20CA-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 P4SMA20CA-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA20CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA20CA-E3/61 Tags
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