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Vishay General Semiconductor - Diodes Division P4SMA27A-E3/5A
- Part No.:
- P4SMA27A-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA27A-E3/5A.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,329
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Product details
Overview
P4SMA27A-E3/5A 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 27 V breakdown voltage (VBR = 25.7–28.4 V at 1 mA), 23.1 V standoff voltage (VWM), 37.5 V clamping voltage (VC) at 10.7 A peak pulse current, and 400 W peak pulse power (10/1000 µs waveform), suitable for protecting MOSFETs and sensor interfaces in industrial power supplies.
For engineers reviewing the P4SMA27A-E3/5A datasheet, P4SMA27A-E3/5A pinout, P4SMA27A-E3/5A application, or P4SMA27A-E3/5A equivalent, key selection criteria include unidirectional polarity, SMA package thermal resistance (RθJA = 120 °C/W), AEC-Q101 qualification status, RoHS compliance (E3 suffix), and clamping performance under repetitive surge conditions.
Technical Context
The P4SMA27A-E3/5A operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response to transient overvoltages (<1 ns). Its clamping action limits line voltage to ≤37.5 V during 10/1000 µs surges up to 10.7 A while maintaining low incremental surge resistance and stable temperature coefficient of VBR (0.096 %/°C).
Designed for surface-mount assembly on 0.2" × 0.2" copper pads, it supports automated placement and meets J-STD-020 MSL Level 1 (peak reflow 260 °C). The cathode band identifies polarity, and its 150 °C maximum junction temperature enables operation in automotive and industrial ambient environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1 mA - defines reliable avalanche initiation threshold for overvoltage protection |
| VWM | 23.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 37.5 V at 10.7 A - clamped voltage during 400 W transient, limiting stress on downstream ICs |
| PPPM | 400 W (10/1000 µs) - peak surge power handling capacity on standard PCB pad layout |
| IFSM | 40 A (8.3 ms half-sine) - forward surge current rating for inrush or fault events |
| TJ max. | 150 °C - maximum junction temperature enabling use in high-ambient industrial environments |
| RθJA | 120 °C/W - thermal resistance from junction to ambient, guiding heatsinking requirements |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, matte tin-plated leads, RoHS-compliant (E3 suffix), MSL Level 1, UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to protected circuit ground or low-side reference; completes clamping loop during reverse surge |
| Cathode | Avalanche conduction terminal | Marked with band; connects to line being protected (e.g., 24 V rail); conducts when VLINE > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 24 V systems |
| Low clamping ratio (VC/VBR ≈ 1.32) | Minimizes overvoltage margin between clamping and breakdown, improving system-level safety margin |
| Glass passivated junction | Ensures long-term reliability and stable leakage performance across temperature and humidity stress |
| AEC-Q101 qualified option available | Supports automotive-grade designs where P4SMA27A-E3/5AHE3 variant meets stress test requirements |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, reducing manufacturing overhead |
Applications
| Industrial Power Input Protection | Automotive Sensor Signal Line Protection |
|---|---|
Use Scenario: 24 V DC input stage of PLC I/O module exposed to inductive switching transients from solenoid drivers. IC Role / Device Role / Timing Role: Unidirectional TVS placed between +24 V rail and chassis ground to clamp positive-going surges. Use Value: Limits transient voltage to ≤37.5 V, preventing damage to upstream DC-DC controller and downstream isolation amplifiers. |
Use Scenario: CAN or LIN bus signal lines in engine control unit connected to temperature/pressure sensors. IC Role / Device Role / Timing Role: TVS mounted at connector interface to absorb ESD (IEC 61000-4-2) and load-dump energy. Use Value: Sub-1 ns response ensures clamping before transceiver ICs experience overstress; low capacitance avoids signal integrity degradation. |
| Consumer Appliance Motor Drive Protection | Telecom PoE Interface Protection |
Use Scenario: H-bridge gate driver supply rail in smart HVAC blower motor, subject to back-EMF spikes. IC Role / Device Role / Timing Role: Unidirectional TVS on 12 V logic supply feeding half-bridge drivers to suppress inductive kickback. Use Value: Withstands 40 A surge (8.3 ms) and maintains <1 µA leakage at 23.1 V, ensuring no standby current penalty. |
Use Scenario: Data pair protection in IEEE 802.3af/at PoE midspan injectors handling 48 V DC power + Ethernet signals. IC Role / Device Role / Timing Role: TVS array element on powered device side, clamping common-mode surges induced by cable coupling. Use Value: 400 W rating accommodates combined power + data surge events; RoHS/E3 compliance meets telecom environmental mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Higher VWM (24 V), lower VC (38.9 V), same SMA package but 600 W PPPM | Better suited for 24 V nominal systems requiring tighter clamping margin | Select SMBJ24A if system VWM tolerance allows 24 V standoff and higher surge immunity is required |
| 1.5SMC27A | Larger SMC (DO-214AB) package, identical VBR/VC, 1500 W PPPM, RθJA = 30 °C/W | Used where board space permits larger footprint and higher thermal dissipation is needed | Choose 1.5SMC27A for high-reliability industrial power supplies needing extended surge endurance |
Compared with P4SMA27A-E3/5A, SMBJ24A offers superior clamping margin at 24 V systems but requires validation of VWM derating, while 1.5SMC27A delivers 3.75× higher peak power in a larger package-ideal when thermal management and surge robustness outweigh size constraints.
Availability
P4SMA27A-E3/5A is available at Aetrix Electronics and suitable for industrial power input protection, automotive sensor interface hardening, consumer appliance motor drive circuits, and telecom PoE interface protection requiring stable component supply and RoHS-compliant sourcing.
Supply support for P4SMA27A-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, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The P4SMA Series targets cost-sensitive yet robust transient suppression needs in consumer, industrial, and automotive electronics, delivering standardized TVS performance in compact surface-mount packages with AEC-Q101 options.
FAQ
What is the standoff voltage rating of the P4SMA27A-E3/5A?
The P4SMA27A-E3/5A has a maximum working standoff voltage (VWM) of 23.1 V at 25 °C. This value represents the highest continuous reverse voltage the device can block while maintaining reverse leakage current below 1 µA, making it suitable for 24 V nominal systems with appropriate derating.
Is the P4SMA27A-E3/5A RoHS-compliant and halogen-free?
Yes, the P4SMA27A-E3/5A carries the E3 suffix, indicating full RoHS compliance per EU Directive 2011/65/EU. It is not halogen-free; for halogen-free versions, the M3 suffix (e.g., P4SMA27A-M3/5A) must be selected instead.
Does the P4SMA27A-E3/5A meet AEC-Q101 qualification standards?
The base P4SMA27A-E3/5A is commercial-grade and not AEC-Q101 qualified. However, the automotive-qualified variant P4SMA27AHE3_A is available with AEC-Q101 certification; the "HE3" suffix and revision code "A" denote this qualification.
What is the clamping voltage of the P4SMA27A-E3/5A under peak surge conditions?
The P4SMA27A-E3/5A clamps to a maximum of 37.5 V when subjected to its rated peak pulse current of 10.7 A (10/1000 µs waveform). This clamping voltage is measured at the device terminals under standard test conditions with 0.2" × 0.2" copper pads.
What package type does the P4SMA27A-E3/5A use, and what are its mounting requirements?
The P4SMA27A-E3/5A uses the SMA (DO-214AC) surface-mount package. It requires soldering to minimum recommended pad layout (0.2" × 0.2" copper per terminal) and is rated for MSL Level 1, allowing standard reflow profiles with peak temperature up to 260 °C without pre-baking.
P4SMA27A-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:
- 1
- Bidirectional Channels:
- -
- 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)
P4SMA27A-E3/5A FAQ
1.How can I place an order for P4SMA27A-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA27A-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 P4SMA27A-E3/5A reliable?
The price and inventory of P4SMA27A-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 P4SMA27A-E3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA27A-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA27A-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA27A-E3/5A?
P4SMA27A-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA27A-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 P4SMA27A-E3/5A?
For technical support, including P4SMA27A-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA27A-E3/5A requirements.
6.How does Aetrix verify that P4SMA27A-E3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA27A-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 P4SMA27A-E3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA27A-E3/5A?
All P4SMA27A-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA27A-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 P4SMA27A-E3/5A part is unused and in its original packaging.
Return procedure for P4SMA27A-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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