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Vishay General Semiconductor - Diodes Division P4SMA27AHE3/5A
- Part No.:
- P4SMA27AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA27AHE3/5A.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,737
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Product details
Overview
P4SMA27AHE3/5A 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 maximum clamping voltage at 10.7 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the P4SMA27AHE3/5A datasheet, P4SMA27AHE3/5A pinout, P4SMA27AHE3/5A application, or P4SMA27AHE3/5A 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
The P4SMA27AHE3/5A operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 25.7–28.4 V breakdown range and clamping transient energy to ≤37.5 V at 10.7 A. Its glass-passivated junction ensures stable leakage (<1.0 µA at 23.1 V) and fast response time (<1.0 ns), critical for protecting sensitive CMOS inputs and microcontroller I/O pins.
Thermally, it exhibits RθJA = 120 °C/W and RθJL = 30 °C/W, enabling reliable operation up to 150 °C junction temperature under pulsed conditions. The device meets MSL Level 1 per J-STD-020 and supports reflow soldering at peak 260 °C, with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 25.7–28.4 V at 1.0 mA - defines precise avalanche initiation threshold for repeatable transient suppression |
| Standoff Voltage VWM | 23.1 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| Clamping Voltage VC | 37.5 V at 10.7 A (10/1000 µs) - limits downstream voltage stress during ESD or load-switch surges |
| Peak Pulse Power PPPM | 400 W - sustains single 10/1000 µs transients without degradation when mounted on 5.0 mm × 5.0 mm pads |
| Junction Temperature Range | −65 to +150 °C - enables deployment in under-hood automotive and industrial environments |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
| Package | SMA (DO-214AC) - low-profile surface-mount outline compatible with standard SMT pick-and-place and reflow profiles |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with matte tin-plated leads; cathode indicated by band; dimensions 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); UL 94 V-0 rated compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; carries forward surge current up to 40 A (8.3 ms half-sine) |
| Cathode | Avalanche clamping terminal | Banded end; referenced to system ground or return path; sinks transient current during overvoltage events |
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) without derating above 25 °C |
| Glass-passivated junction | Ensures stable VBR tolerance (±5 %), low leakage (<1 µA), and long-term reliability under thermal cycling |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring zero-defect reliability |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, reducing manufacturing overhead |
| Low incremental surge resistance | Minimizes clamping overshoot during fast-rising transients (e.g., inductive kick from solenoid drivers) |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Suppressing load-dump transients (up to 35 V, 100 ms) on 12 V battery-fed ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND to clamp surges before LDO input. Use Value: Limits voltage seen by downstream regulators to ≤37.5 V, preventing latch-up or gate oxide damage in PMICs. |
Use Scenario: Guarding analog outputs of pressure/temperature sensors against ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS connected across sensor output and ground to shunt ±8 kV contact ESD per IEC 61000-4-2. Use Value: Clamps transients within <1 ns while maintaining <1 pF junction capacitance - no signal integrity impact on 10 kHz sensor bandwidth. |
| Consumer USB Port Surge Protection | Telecom Line Card Overvoltage Protection |
|
Use Scenario: Protecting USB VBUS and D+/D− lines from hot-plug induced surges and external ESD. IC Role / Device Role / Timing Role: Discrete unidirectional TVS on VBUS rail; bidirectional variants used on data lines. Use Value: Withstands 400 W pulses without degradation, ensuring compliance with USB-IF surge immunity requirements. |
Use Scenario: Safeguarding Ethernet PHY interfaces and PoE injectors against lightning-induced surges on twisted-pair lines. IC Role / Device Role / Timing Role: TVS array configured in common-mode or differential mode across line pairs. Use Value: 37.5 V clamping voltage prevents damage to 3.3 V/5 V PHY transceivers while supporting 10/1000 µs waveform immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27A | Same VBR range (25.7–28.4 V), but SMB package (DO-214AA); 600 W PPPM; higher thermal mass | Better suited for higher-energy surges where PCB space allows larger footprint | Select SMBJ27A if layout permits larger pad area and higher pulse energy handling is required |
| 1.5SMC27A | Same electrical specs, but SMC (DO-214AB) package; 1500 W PPPM; RθJA = 100 °C/W | Preferred for industrial motor drives with repetitive surge exposure | Choose 1.5SMC27A when duty cycle exceeds 0.01 % or ambient temperature exceeds 85 °C |
Compared with P4SMA27AHE3/5A, SMBJ27A offers higher pulse power in a slightly larger footprint, while 1.5SMC27A delivers triple the energy handling in a more thermally robust package - both retain identical clamping behavior but differ in thermal derating and board-level surge margin.
Availability
P4SMA27AHE3/5A is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, consumer USB power delivery systems, and telecom line cards requiring stable component supply with AEC-Q101 traceability and RoHS compliance.
Supply support for P4SMA27AHE3/5A 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The P4SMA Series targets cost-sensitive, high-volume transient protection applications where AEC-Q101 qualification, low profile, and automated assembly compatibility are essential - especially in 12 V/24 V power domains.
FAQ
What is the exact breakdown voltage range for P4SMA27AHE3/5A?
The P4SMA27AHE3/5A has a guaranteed breakdown voltage (VBR) range of 25.7 V to 28.4 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This tight tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage design margins in safety-critical circuits.
Is P4SMA27AHE3/5A suitable for automotive applications?
Yes, P4SMA27AHE3/5A is AEC-Q101 qualified and manufactured with RoHS-compliant materials. Its −65 °C to +150 °C operating range, MSL Level 1 rating, and validation across HTGB, HTRB, and temperature cycling make it appropriate for under-hood and cabin-mounted automotive modules including body controllers and ADAS sensor interfaces.
What is the maximum clamping voltage of P4SMA27AHE3/5A under surge conditions?
The P4SMA27AHE3/5A clamps to a maximum of 37.5 V when subjected to a 10/1000 µs waveform with 10.7 A peak pulse current. This value is specified in the Vishay datasheet (Document Number 88367, Rev. 09-Jan-2024) and represents the worst-case voltage seen by protected circuitry during standardized surge testing.
Does P4SMA27AHE3/5A have polarity markings, and how is it oriented on PCB?
Yes, P4SMA27AHE3/5A is unidirectional and features a visible cathode band on the SMA (DO-214AC) package. During PCB layout, the banded end must connect to the system ground or return path, while the anode connects to the line being protected - reversing polarity disables avalanche clamping functionality.
What is the thermal resistance and power derating behavior of P4SMA27AHE3/5A?
P4SMA27AHE3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead (RθJL) of 30 °C/W. Its peak pulse power derates linearly above 25 °C ambient per Figure 2 in the datasheet, dropping to ~270 W at 85 °C ambient - critical for thermal design in enclosed enclosures or high-density layouts.
P4SMA27AHE3/5A 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:
- Discontinued at Digi-Key
- 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)
P4SMA27AHE3/5A FAQ
1.How can I place an order for P4SMA27AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA27AHE3/5A 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 P4SMA27AHE3/5A reliable?
The price and inventory of P4SMA27AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA27AHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA27AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA27AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA27AHE3/5A?
P4SMA27AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA27AHE3/5A 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 P4SMA27AHE3/5A?
For technical support, including P4SMA27AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA27AHE3/5A requirements.
6.How does Aetrix verify that P4SMA27AHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA27AHE3/5A 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 P4SMA27AHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA27AHE3/5A?
All P4SMA27AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA27AHE3/5A, 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 P4SMA27AHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA27AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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