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Vishay General Semiconductor - Diodes Division P4SMA27AHE3_A/I
- Part No.:
- P4SMA27AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA27AHE3_A/I.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,430
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Product details
Overview
P4SMA27AHE3_A/I 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 rating per 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.
For engineers reviewing the P4SMA27AHE3_A/I datasheet, P4SMA27AHE3_A/I pinout, P4SMA27AHE3_A/I application, or P4SMA27AHE3_A/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below its 23.1 V standoff voltage and rapidly avalanches above its 25.7–28.4 V breakdown threshold to limit transient overvoltages. Its glass-passivated junction ensures stable leakage performance (<1 µA at VWM) and fast response time (<1 ns), critical for protecting sensitive CMOS inputs and microcontroller I/O pins.
The device delivers 400 W peak pulse power handling (derated to 300 W above 91 V) under 10/1000 µs waveform conditions, with thermal resistance of 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead). Its matte tin-plated leads meet J-STD-002 solderability standards and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1 mA - defines precise avalanche onset range for reliable clamping margin |
| 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 10/1000 µs transient, limiting stress on downstream components |
| PPPM | 400 W - peak transient energy absorption capability without failure under standard surge waveform |
| IFSM | 40 A - surge current rating for 8.3 ms half-sine wave, supporting inrush and fault-current events |
| TJ max | +150 °C - enables operation in under-hood automotive and high-temperature industrial environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional protection configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 24 V rail or sensor output); band-marked end for orientation identification |
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/42 Ω) without derating |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics applications requiring zero defect reliability |
| Glass passivated junction | Ensures <1 µA reverse leakage at VWM, minimizing standby power loss in battery-powered systems |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow soldering without moisture sensitivity concerns or baking requirements |
| Low profile SMA package | Reduces board space vs. DO-41; compatible with high-speed pick-and-place equipment for volume manufacturing |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 24 V CAN bus power rails and LIN transceivers from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and ground to clamp positive-going surges up to 400 W. Use Value: Limits voltage to ≤37.5 V during 10/1000 µs transients, preventing damage to 36 V-rated DC-DC converters and interface ICs. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in PLC modules exposed to relay coil switching noise. IC Role / Device Role / Timing Role: TVS connected across sensor output and ground to suppress inductive kickback-induced spikes. Use Value: Sub-1 ns response ensures clamping occurs before 12-bit ADC input stages are overstressed, preserving measurement integrity. |
| Consumer Device USB Port ESD Protection | Telecom AC-DC Adapter Input Stage |
Use Scenario: Secondary-level surge suppression on USB VBUS lines in smart home hubs subjected to human-body-model (HBM) ESD events. IC Role / Device Role / Timing Role: Unidirectional TVS placed after primary fuse and upstream of USB controller's internal protection. Use Value: 37.5 V clamping voltage prevents latch-up in USB PHY ICs rated for 5.5 V absolute maximum, while 400 W rating covers system-level surge tests. |
Use Scenario: Input-stage transient suppression on offline AC-DC adapters handling 230 VAC mains with lightning-induced surges. IC Role / Device Role / Timing Role: TVS mounted across bridge rectifier output to absorb differential-mode transients before bulk capacitor. Use Value: 23.1 V standoff allows normal operation during 320 VDC peak rectified voltage; 400 W rating sustains multiple 10/1000 µs surges without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ27A-E3/5A | Same VBR range (25.7–28.4 V), identical SMA package, but rated for 400 W only up to 200 V VBR; no AEC-Q101 qualification | Lacks automotive qualification; suitable for commercial/industrial use where AEC-Q101 is not mandated | Select when cost sensitivity outweighs automotive reliability requirements and full AEC-Q101 traceability is unnecessary |
| 1.5SMC27A | Higher package thermal mass (DO-214AB), 400 W rating, same VBR/VC, but larger footprint and MSL Level 2 | Requires larger PCB pad layout; less suitable for dense automotive ECUs but offers higher single-pulse energy margin | Prefer when board space permits and enhanced thermal dissipation under repetitive surge conditions is prioritized |
Compared with SMAJ27A-E3/5A and 1.5SMC27A, the P4SMA27AHE3_A/I uniquely combines AEC-Q101 qualification, MSL Level 1 reflow compatibility, and minimal SMA footprint - making it optimal for space-constrained, automotive-grade designs requiring zero-defect field reliability.
Availability
P4SMA27AHE3_A/I is available at Aetrix Electronics and suitable for automotive power supply protection, industrial sensor interface hardening, consumer USB port surge suppression, and telecom AC-DC adapter input stage design requiring stable component supply and long-term lifecycle support.
Supply support for P4SMA27AHE3_A/I 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 is engineered for high-reliability transient suppression in automotive, industrial, and computing systems - delivering consistent clamping performance, AEC-Q101 validation, and robust SMT manufacturability.
FAQ
What is the maximum clamping voltage of the P4SMA27AHE3_A/I under a 10/1000 µs transient?
The P4SMA27AHE3_A/I has a maximum clamping voltage (VC) of 37.5 V at 10.7 A peak pulse current under the standardized 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet (Document Number: 88367) and represents the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream components like 36 V-rated regulators remain within safe operating limits. The P4SMA27AHE3_A/I maintains this clamping performance across its full operating temperature range.
Is the P4SMA27AHE3_A/I qualified for automotive applications?
Yes, the P4SMA27AHE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in Revision 09-Jan-2024 of datasheet 88367. This qualification includes stress testing for temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge - validating suitability for automotive powertrain, body control, and ADAS subsystems. The P4SMA27AHE3_A/I meets the zero-defect reliability expectations required for under-hood and cabin-mounted electronics.
What does the "HE3_A/I" suffix indicate in P4SMA27AHE3_A/I?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification; "A" indicates the device belongs to the first revision group (P4SMA6.8A to P4SMA220A) covered under AEC-Q101; and "I" specifies packaging in 13-inch diameter tape-and-reel format with 7500 units per reel. This full ordering code distinguishes the P4SMA27AHE3_A/I from commercial-grade variants (e.g., P4SMA27A-E3/5A) and ensures traceable compliance with automotive supply chain requirements.
Can the P4SMA27AHE3_A/I be used in bidirectional configurations?
No, the P4SMA27AHE3_A/I is a unidirectional TVS diode, as indicated by its "A" suffix (vs. "CA" for bidirectional versions like P4SMA27CA). Its cathode band marking and electrical characteristics - including forward surge rating (IFSM = 40 A) and asymmetric breakdown behavior - are specified only for reverse-biased operation. Using the P4SMA27AHE3_A/I in bidirectional applications would result in improper clamping during negative transients and potential device failure.
What is the thermal resistance of the P4SMA27AHE3_A/I, and how does it affect PCB layout?
The P4SMA27AHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead resistance (RθJL) of 30 °C/W, measured on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures under repetitive surges, PCB layout must provide adequate copper area - reducing RθJA through thermal vias and internal planes. The P4SMA27AHE3_A/I's low RθJL also supports efficient heat transfer to the PCB substrate, especially important in compact automotive modules.
P4SMA27AHE3_A/I 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA27AHE3_A/I FAQ
1.How can I place an order for P4SMA27AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA27AHE3_A/I 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 P4SMA27AHE3_A/I reliable?
The price and inventory of P4SMA27AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA27AHE3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA27AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA27AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA27AHE3_A/I?
P4SMA27AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA27AHE3_A/I 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 P4SMA27AHE3_A/I?
For technical support, including P4SMA27AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA27AHE3_A/I requirements.
6.How does Aetrix verify that P4SMA27AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA27AHE3_A/I 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 P4SMA27AHE3_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA27AHE3_A/I?
All P4SMA27AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA27AHE3_A/I, 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 P4SMA27AHE3_A/I part is unused and in its original packaging.
Return procedure for P4SMA27AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA27AHE3_A/I Tags
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