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Vishay General Semiconductor - Diodes Division P4SMA27CA-E3/5A
- Part No.:
- P4SMA27CA-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA27CA-E3/5A.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,486
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Product details
Overview
P4SMA27CA-E3/5A 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 27 V breakdown voltage (VBR = 25.7–28.4 V at 1 mA), 37.5 V maximum clamping voltage (VC) at 10.7 A peak pulse current, and 400 W peak pulse power rating with a 10/1000 µs waveform - suitable for protecting MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P4SMA27CA-E3/5A datasheet, P4SMA27CA-E3/5A pinout, P4SMA27CA-E3/5A application, or P4SMA27CA-E3/5A equivalent, this device delivers verified bidirectional surge suppression, AEC-Q101 qualification (via HE3/HM3 variants), RoHS-compliant SMA (DO-214AC) packaging, and stable clamping performance across -65 °C to +150 °C junction temperature range.
Technical Context
The P4SMA27CA-E3/5A operates as a symmetrical, bidirectional avalanche diode with no polarity marking - enabling identical transient suppression in both directions. Its glass-passivated junction ensures low leakage (<1 µA at 23.1 V stand-off) and fast response time (<1 ns), while its 30 Ω typical junction-to-lead thermal resistance supports reliable power dissipation under repetitive surge conditions.
Rated for 400 W peak pulse power (derated to 300 W above 91 V), it maintains clamping integrity under 10/1000 µs transients up to 10.7 A, with a 0.096 %/°C temperature coefficient of VBR. The device meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101 when ordered with HE3 or HM3 suffixes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 25.7–28.4 V at 1 mA test current - defines precise avalanche initiation threshold for bidirectional clamping |
| Stand-off Voltage VWM | 23.1 V maximum - ensures no conduction during normal operation below transient threshold |
| Clamping Voltage VC | 37.5 V at 10.7 A IPPM - limits downstream voltage stress during 10/1000 µs surges |
| Peak Pulse Power PPPM | 400 W (10/1000 µs) - sustains high-energy transients without failure; derates above 91 V |
| Package | SMA (DO-214AC) - surface-mount, low-profile package compatible with automated placement and reflow |
| Junction Temperature Range | -65 °C to +150 °C - supports operation in harsh environments including under-hood automotive |
| AEC-Q101 Qualified | Yes (with HE3/HM3 suffix variants) - validated for automotive-grade reliability and lifetime stress testing |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1, 0.2" × 0.2" copper pad layout recommended for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No polarity marking; terminals interchangeable - enables identical clamping in either direction |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Handles high-energy ESD and load-switching transients without degradation in standard PCB layouts |
| Glass passivated junction | Ensures stable leakage (<1 µA at VWM) and long-term reliability under thermal cycling |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for downstream ICs |
| RoHS-compliant, halogen-free options | E3 suffix denotes commercial-grade RoHS compliance; M3 adds halogen-free certification |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking - reduces manufacturing overhead and handling risk |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from ISO 7637-2 load dump and inductive switching spikes. IC Role / Device Role: Bidirectional TVS clamp placed directly at connector entry point before signal conditioning circuitry. Use Value: Limits transient voltage to ≤37.5 V, preserving signal integrity and preventing latch-up in 3.3 V/5 V microcontrollers and ADC front-ends. |
Use Scenario: Safeguarding digital input/output channels of programmable logic controllers against field-wiring induced surges and ground bounce. IC Role / Device Role: Primary overvoltage clamp on 24 V DC I/O lines, coordinated with series impedance for current limiting. Use Value: Withstands repeated 400 W transients per IEC 61000-4-5, extending system uptime and reducing field failure rates. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Secondary-level surge protection on Ethernet PHY power rails and data line terminations in PoE-powered equipment. IC Role / Device Role: Fast-response bidirectional clamp suppressing ESD (IEC 61000-4-2) and lightning-induced common-mode transients. Use Value: Sub-1 ns response and 37.5 V clamping enable compatibility with 3.3 V PHY ICs without additional voltage translation. |
Use Scenario: Input-stage transient suppression on AC-DC adapter primary-side rectifier outputs and secondary-side 5 V/12 V rails. IC Role / Device Role: Standoff-rated TVS absorbing switch-mode noise and external surge coupling into low-voltage domains. Use Value: 23.1 V VWM allows safe operation across 20–24 V nominal supplies while clamping to 37.5 V during 10/1000 µs events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ28CA | Higher 28 V nominal VBR (26.6–29.4 V), same SMA footprint but 600 W PPPM rating | Better suited for higher-energy transients where 400 W margin is insufficient | Select SMBJ28CA when system-level surge testing exceeds IEC 61000-4-5 Level 4 requirements |
| 1.5KE27CA | Through-hole DO-201 package, 27 V VBR, 1500 W PPPM, higher VC = 43.5 V | Used in legacy or high-power designs where board space permits axial leaded components | Choose 1.5KE27CA only if through-hole assembly is required and clamping voltage margin allows 43.5 V |
Compared with P4SMA27CA-E3/5A, SMBJ28CA offers higher surge capacity in the same surface-mount form factor, while 1.5KE27CA trades miniaturization for raw power handling - making P4SMA27CA-E3/5A optimal for space-constrained, medium-energy protection in modern SMT designs.
Availability
P4SMA27CA-E3/5A is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line interfaces, and consumer power adapter designs requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA27CA-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P4SMA series was developed for robust, cost-effective transient suppression in high-volume industrial and automotive systems - delivering consistent clamping, AEC-Q101 readiness, and seamless SMT integration.
FAQ
What is the exact breakdown voltage range for P4SMA27CA-E3/5A?
The P4SMA27CA-E3/5A has a guaranteed breakdown voltage (VBR) range of 25.7 V to 28.4 V at 1 mA test current, measured per ANSI/IEEE C62.35. This bidirectional specification applies equally in both polarities and is validated across the full operating temperature range of -65 °C to +150 °C. The P4SMA27CA-E3/5A's tight VBR tolerance ensures predictable clamping onset in safety-critical protection circuits.
Is P4SMA27CA-E3/5A suitable for automotive applications?
Yes - while the base P4SMA27CA-E3/5A is commercial-grade, Vishay offers AEC-Q101-qualified versions under HE3 and HM3 ordering codes (e.g., P4SMA27CAHE3_A). These variants undergo rigorous stress testing for automotive use, including temperature cycling, humidity bias, and accelerated life testing. The P4SMA27CA-E3/5A itself shares identical electrical specs and package construction, enabling direct qualification path for automotive programs.
What does the "CA" suffix mean in P4SMA27CA-E3/5A?
The "CA" suffix in P4SMA27CA-E3/5A explicitly denotes a bidirectional configuration - meaning the device functions identically in both forward and reverse directions, with no cathode band marking. This distinguishes it from unidirectional "A" variants (e.g., P4SMA27A), which feature a cathode band and conduct only in one direction. The P4SMA27CA-E3/5A is therefore ideal for AC-coupled or differential signal lines where polarity is undefined or alternating.
What is the maximum clamping voltage of P4SMA27CA-E3/5A under surge conditions?
The P4SMA27CA-E3/5A has a maximum clamping voltage (VC) of 37.5 V at 10.7 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured at TA = 25 °C on 0.2" × 0.2" copper pads and represents the upper limit of voltage imposed on protected circuitry during worst-case transient events. The P4SMA27CA-E3/5A's low VC relative to its VBR reflects excellent clamping efficiency critical for safeguarding 3.3 V and 5 V logic.
Does P4SMA27CA-E3/5A require special PCB layout considerations?
Yes - to achieve rated 400 W pulse power, the P4SMA27CA-E3/5A must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay's datasheet Figure 2. Smaller pads reduce thermal dissipation, causing premature failure under repetitive surges. Additionally, keep traces short and wide between the P4SMA27CA-E3/5A and protected node to minimize inductance - ensuring sub-1 ns response remains effective in real-world layouts.
P4SMA27CA-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):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 10.7A
- 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)
P4SMA27CA-E3/5A FAQ
1.How can I place an order for P4SMA27CA-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA27CA-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 P4SMA27CA-E3/5A reliable?
The price and inventory of P4SMA27CA-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 P4SMA27CA-E3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA27CA-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA27CA-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA27CA-E3/5A?
P4SMA27CA-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA27CA-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 P4SMA27CA-E3/5A?
For technical support, including P4SMA27CA-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA27CA-E3/5A requirements.
6.How does Aetrix verify that P4SMA27CA-E3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA27CA-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 P4SMA27CA-E3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA27CA-E3/5A?
All P4SMA27CA-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA27CA-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 P4SMA27CA-E3/5A part is unused and in its original packaging.
Return procedure for P4SMA27CA-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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