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Vishay General Semiconductor - Diodes Division P4SMA16CA-E3/5A
- Part No.:
- P4SMA16CA-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA16CA-E3/5A.pdf
- Description:
- TVS DIODE 13.6VWM 22.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA16CA-E3/5A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 16 V standoff voltage (VWM), 17.8 V minimum breakdown voltage (VBR), 22.5 V maximum clamping voltage (VC) at 17.8 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 P4SMA16CA-E3/5A datasheet, P4SMA16CA-E3/5A pinout, P4SMA16CA-E3/5A application, or P4SMA16CA-E3/5A equivalent, key selection criteria include bidirectional clamping capability, 22.5 V clamping under 17.8 A surge, RoHS-compliant matte tin terminals, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, delivering consistent clamping performance without polarity dependence. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance, critical for fast transient suppression in sensitive analog and digital interfaces.
The device meets AEC-Q101 qualification when ordered with HE3/HM3 suffixes (not applicable to -E3/5A), and its thermal resistance (RθJA = 120 °C/W) reflects standard SMA package limitations under natural convection. Derating above 25 °C ambient follows Fig. 2 in the datasheet, with full 400 W rating only at TA ≤ 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 13.6 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 15.2–16.8 V at 1 mA - Voltage at which device transitions from high-impedance to low-impedance clamping state; tight tolerance enables predictable protection onset. |
| VC (Clamping Voltage) | 22.5 V at 17.8 A IPPM - Peak voltage seen by protected circuit during 10/1000 µs surge; directly limits stress on downstream components. |
| PPPM (Peak Pulse Power) | 400 W - Maximum transient energy absorption capability under standardized 10/1000 µs waveform; determines survivability against common ESD and inductive switching events. |
| ID (Reverse Leakage) | 1.0 µA at VWM - Ultra-low leakage preserves signal integrity and battery life in always-on circuits. |
| TJ max. | 150 °C - Maximum junction temperature; sets upper limit for thermal design and derating in enclosed or high-ambient environments. |
| Package | SMA (DO-214AC) - Industry-standard surface-mount outline with 5.28 mm length, 4.50 mm width, and 2.29 mm height; compatible with JEDEC MS-013AC footprint. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Accepts surge current in either polarity; connects to line being protected (e.g., RS-485 A/B, USB D+, D−). |
| Cathode | Transient current entry point (bidirectional) | Functions identically to Anode due to symmetrical construction; no cathode band marking on bidirectional variants. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 3 surges (1 kV/2 Ω) on 12 V–24 V systems without external series impedance. |
| Low clamping ratio (VC/VBR ≈ 1.34) | Minimizes overvoltage exposure during clamping - critical for safeguarding 3.3 V or 5 V logic inputs interfacing with higher-voltage buses. |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow assembly without pre-baking; eliminates moisture-related popcorning risk in high-volume manufacturing. |
| Glass passivated junction | Ensures long-term stability of breakdown voltage and leakage current across temperature and lifetime, reducing field failure risk in harsh environments. |
| RoHS-compliant, halogen-free option available | Meets global environmental compliance requirements (e.g., EU RoHS Directive 2011/65/EU, JEDEC JS709) without compromising electrical performance. |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
|
Use Scenario: Protecting analog output lines (4–20 mA) and digital I/O (CAN, LIN) in factory-floor pressure/temperature sensors exposed to relay coil flyback and EMI. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between sensor output and connector, shunting transients before they reach ADC input or microcontroller GPIO. Use Value: Limits induced voltage spikes to ≤22.5 V, preventing latch-up or permanent damage to 3.3 V or 5 V interface ICs while maintaining <1 µA leakage at 13.6 V operating voltage. |
Use Scenario: Safeguarding LIN bus transceivers and window motor driver inputs in door modules subjected to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Primary overvoltage clamp on LIN signal line and 12 V supply rail, absorbing repetitive 400 W pulses from inductive switching without degradation. Use Value: Withstands ≥1000 surges at rated IPPM while maintaining clamping voltage stability - verified per AEC-Q101 test conditions for automotive-grade reliability. |
| Telecom Power Input Stage | Consumer USB-C Port Protection |
|
Use Scenario: Secondary surge protection on 48 V DC input of PoE-powered network switches after primary MOV/GDT stage. IC Role / Device Role / Timing Role: Fast-response secondary clamp limiting residual transients to sub-25 V levels before reaching DC-DC converter controller and PMIC. Use Value: 10 ns response time and 22.5 V clamping ensure downstream silicon remains within absolute maximum ratings even during combined lightning-induced surges. |
Use Scenario: ESD and surge protection on USB-C CC, SBU, and VBUS lines in portable speakers and docking stations. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector, suppressing ±15 kV contact ESD (IEC 61000-4-2) and 10/1000 µs surges up to 400 W. Use Value: Low 1.0 µA leakage at 13.6 V prevents battery drain in standby mode; SMA footprint allows compact layout adjacent to USB-C receptacle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16CA | Same VWM (13.6 V) and VC (22.5 V), but SMB package (DO-214AA); 600 W PPPM rating; RθJA = 100 °C/W. | Higher power handling and lower thermal resistance suit higher-duty-cycle surge environments; larger footprint requires PCB redesign. | Select SMBJ16CA when system-level surge testing exceeds 400 W or thermal management demands lower junction rise. |
| 1.5KE16CA | Through-hole DO-15 package; same VWM/VC specs; 1500 W PPPM; higher IFSM (200 A); RθJA = 15 °C/W on large heatsink. | Designed for legacy through-hole assembly and high-energy industrial transients; incompatible with SMT-only production. | Choose 1.5KE16CA only for manual assembly, repair, or where board space permits axial-leaded devices and higher surge margins are mandatory. |
Compared with P4SMA16CA-E3/5A, SMBJ16CA offers superior thermal performance and surge margin in a slightly larger SMT package, while 1.5KE16CA provides significantly higher energy handling but requires through-hole layout and sacrifices automation compatibility - making P4SMA16CA-E3/5A optimal for cost-sensitive, high-volume SMT designs needing proven 400 W protection in minimal footprint.
Availability
P4SMA16CA-E3/5A is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, telecom power inputs, and consumer USB-C port protection requiring stable component supply and RoHS-compliant sourcing.
Supply support for P4SMA16CA-E3/5A 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 is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series was engineered for high-reliability transient suppression in space-constrained SMT applications, balancing clamping performance, thermal robustness, and manufacturability across automotive, industrial, and communications end markets.
FAQ
What is the clamping voltage of P4SMA16CA-E3/5A at its rated peak pulse current?
The P4SMA16CA-E3/5A has a maximum clamping voltage (VC) of 22.5 V when subjected to its rated peak pulse current (IPPM) of 17.8 A under the standard 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88367 and represents the highest voltage the protected circuit will experience during a worst-case transient event. The P4SMA16CA-E3/5A maintains this clamping performance bidirectionally, ensuring consistent protection regardless of surge polarity.
Is P4SMA16CA-E3/5A suitable for automotive applications?
P4SMA16CA-E3/5A is RoHS-compliant and manufactured to commercial-grade specifications. While it belongs to the AEC-Q101-qualified P4SMA family, the -E3/5A suffix denotes commercial temperature grade (–65 °C to +150 °C junction) without formal AEC-Q101 certification. For production automotive use, specify P4SMA16CAHE3_A or P4SMA16CAHM3_A - the P4SMA16CA-E3/5A itself is appropriate for non-safety-critical automotive prototyping or aftermarket modules where full qualification is not mandated.
What does the "CA" suffix indicate in P4SMA16CA-E3/5A?
The "CA" suffix in P4SMA16CA-E3/5A explicitly denotes a bidirectional Transient Voltage Suppressor. Unlike unidirectional variants (e.g., P4SMA16A), the CA version exhibits identical electrical characteristics - including VWM, VBR, and VC - in both forward and reverse directions. This symmetry eliminates polarity concerns during PCB layout and makes the P4SMA16CA-E3/5A ideal for AC-coupled lines, differential buses like RS-485 or CAN, and any application where voltage transients may occur with either polarity.
What is the thermal resistance of P4SMA16CA-E3/5A, and how does it affect layout?
The P4SMA16CA-E3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W under standard test conditions (mounted on 0.2″ × 0.2″ copper pads). This value assumes minimal PCB copper area; increasing pad size or adding thermal vias reduces effective RθJA. Layout must allocate at least 5.0 mm × 5.0 mm copper per terminal per the datasheet recommendation to sustain full 400 W pulse rating - undersized pads cause premature thermal runaway during repetitive surges.
Does P4SMA16CA-E3/5A require a series current-limiting resistor in typical applications?
No, the P4SMA16CA-E3/5A is designed for direct parallel connection across protected lines and does not require an external series resistor for basic transient suppression. Its low dynamic impedance and fast response enable effective clamping without added components. However, a current-limiting resistor may be added upstream if the protected circuit's short-circuit current exceeds the TVS's peak forward surge rating (IFSM = 40 A for unidirectional operation - not applicable to bidirectional P4SMA16CA-E3/5A under DC bias), or to reduce steady-state power dissipation in fault conditions.
P4SMA16CA-E3/5A 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):
- 13.6V
- Voltage - Breakdown (Min):
- 15.2V
- Voltage - Clamping (Max) @ Ipp:
- 22.5V
- Current - Peak Pulse (10/1000µs):
- 17.8A
- 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)
P4SMA16CA-E3/5A FAQ
1.How can I place an order for P4SMA16CA-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA16CA-E3/5A 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 P4SMA16CA-E3/5A reliable?
The price and inventory of P4SMA16CA-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA16CA-E3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA16CA-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA16CA-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA16CA-E3/5A?
P4SMA16CA-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA16CA-E3/5A 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 P4SMA16CA-E3/5A?
For technical support, including P4SMA16CA-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA16CA-E3/5A requirements.
6.How does Aetrix verify that P4SMA16CA-E3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA16CA-E3/5A 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 P4SMA16CA-E3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA16CA-E3/5A?
All P4SMA16CA-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA16CA-E3/5A, 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 P4SMA16CA-E3/5A part is unused and in its original packaging.
Return procedure for P4SMA16CA-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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