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Vishay General Semiconductor - Diodes Division P4SMA27AHE3_A/H
- Part No.:
- P4SMA27AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA27AHE3_A/H.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,200
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Product details
Overview
P4SMA27AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for clamping inductive switching transients and ESD events 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 (VC) 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 control systems.
For engineers reviewing the P4SMA27AHE3_A/H datasheet, P4SMA27AHE3_A/H pinout, P4SMA27AHE3_A/H application, or P4SMA27AHE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, SMA (DO-214AC) package compatibility, thermal resistance (RθJA = 120 °C/W), and compliance with UL 497B surge protector classification.
Technical Context
The P4SMA27AHE3_A/H operates as a clamping-type TVS diode that enters avalanche conduction when reverse voltage exceeds its breakdown threshold, diverting transient energy away from protected circuitry. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1 µA at VWM), while the low incremental surge resistance enables fast response (<1 ns) to ESD and lightning-induced surges.
Designed for surface-mount assembly on standard PCB copper pads (0.2" × 0.2"), it supports repetitive surge duty cycles up to 0.01% and meets J-STD-020 MSL Level 1 (peak reflow ≤260 °C). The device is rated for operation from −65 °C to +150 °C junction temperature and delivers 3.3 W steady-state power dissipation at TA = 50 °C.
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 rises significantly |
| VC @ IPPM | 37.5 V at 10.7 A - clamped voltage during 10/1000 µs transient, limiting stress on downstream ICs |
| PPPM | 400 W - peak pulse power handling capacity under standardized surge waveform |
| IFSM | 40 A - surge current rating for 8.3 ms half-sine wave, supporting inductive load switching events |
| TJ max | +150 °C - maximum junction temperature enabling use in under-hood automotive environments |
| RθJA | 120 °C/W - thermal resistance from junction to ambient, guiding PCB copper pad sizing for thermal management |
Pinout & Package
Package: SMA (DO-214AC) - surface-mount plastic package with matte tin-plated leads, UL 94 V-0 rated molding compound, and cathode band marking for unidirectional polarity identification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance reference in unidirectional clamp configuration |
| Cathode | Avalanche conduction terminal | Connected to protected line; conducts when reverse voltage exceeds VBR, shunting surge to Anode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 |
| Glass passivated junction | Ensures stable VBR over time and temperature, minimizing parameter drift in harsh environments |
| MSL Level 1 | Compatible with standard SMT reflow profiles up to 260 °C peak without preconditioning |
| UL 497B recognized | Approved for use as a telecom/data-line surge protector under Underwriters Laboratories safety standards |
| Low profile DO-214AC footprint | Enables high-density PCB layouts and automated pick-and-place assembly with minimal board area |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Clamping |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp spikes above 27 V. Use Value: Limits voltage seen by MCU power supply to ≤37.5 V during 10/1000 µs surges, preventing latch-up or damage. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS connected across signal and ground to suppress sub-100 ns ESD pulses before reaching ADC input. Use Value: Sub-1 ns response and <1 µA leakage at 23.1 V preserve signal integrity and measurement accuracy. |
| Telecom Data Line Surge Suppression | Consumer Power Adapter Input Protection |
|
Use Scenario: Safeguarding RS-485 transceivers against lightning-induced surges on long-haul communication lines. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices on differential pair, referenced to common-mode ground. Use Value: 400 W peak power rating handles IEC 61000-4-5 Level 4 (4 kV) surges without degradation. |
Use Scenario: Adding secondary overvoltage protection on AC-DC adapter DC output rails feeding USB-C PD controllers. IC Role / Device Role / Timing Role: Clamp diode installed after primary regulation stage to absorb residual switching transients. Use Value: 23.1 V standoff allows normal 24 V operation while clamping fault conditions to safe levels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27A-E3/52 (Vishay) | Higher 600 W PPPM, SMB (DO-214AA) package, same VBR range but larger footprint | Better suited for higher-energy transients where board space permits larger package | Select when surge energy exceeds 400 W or thermal budget requires lower RθJA (80 °C/W) |
| 1.5SMC27A (ON Semiconductor) | Same VBR/VC specs, SMC (DO-214AB) package, 1500 W PPPM, non-AEC-Q101 | Lacks automotive qualification; suitable for commercial/industrial use only | Choose for cost-sensitive non-automotive designs requiring higher pulse power headroom |
Compared with SMBJ27A-E3/52 and 1.5SMC27A, the P4SMA27AHE3_A/H offers optimal balance of AEC-Q101 compliance, compact SMA footprint, and 400 W surge capability - making it ideal for space-constrained automotive modules where qualification and reliability are mandatory.
Availability
P4SMA27AHE3_A/H is available at Aetrix Electronics and suitable for automotive control units, industrial sensor nodes, telecom interface protection, and consumer power adapter designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4SMA27AHE3_A/H 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The P4SMA Series is engineered for robust transient suppression in automotive, industrial, and telecom systems - delivering AEC-Q101-qualified, UL-recognized TVS diodes in compact surface-mount packages optimized for automated manufacturing.
FAQ
What is the breakdown voltage tolerance of the P4SMA27AHE3_A/H?
The P4SMA27AHE3_A/H has a breakdown voltage (VBR) range of 25.7 V to 28.4 V at 1 mA test current, corresponding to a ±5% tolerance around the nominal 27 V rating. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable design margins in automotive and industrial applications where voltage thresholds must be precisely controlled.
Is the P4SMA27AHE3_A/H suitable for bidirectional transient protection?
No, the P4SMA27AHE3_A/H is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. It conducts only in reverse bias above VBR. For bidirectional protection, Vishay offers the P4SMA27CA variant. Using P4SMA27AHE3_A/H in bidirectional configurations may result in forward conduction during positive transients, compromising protection integrity.
Does the P4SMA27AHE3_A/H require derating at elevated ambient temperatures?
Yes, the P4SMA27AHE3_A/H must be derated above TA = 25 °C per Figure 2 in the datasheet. Its peak pulse power drops linearly to ~270 W at 85 °C ambient and further declines toward zero at TJ = 150 °C. Designers must apply thermal modeling or use the provided derating curve to ensure junction temperature remains within limits during repetitive surge events.
What is the meaning of the "HE3_A/H" suffix in P4SMA27AHE3_A/H?
The "HE3" denotes RoHS-compliant and AEC-Q101 qualified construction; "A" indicates the revision level per Vishay's internal documentation; "H" specifies the packaging format - 7-inch tape-and-reel with 1800 units per reel. This ordering code ensures traceability to automotive-grade process controls, material compliance, and logistics-ready delivery for high-volume SMT production.
How does the P4SMA27AHE3_A/H compare to older P4SMA27A variants without HE3?
The P4SMA27AHE3_A/H retains identical electrical specifications (VBR, VC, PPPM) as legacy P4SMA27A parts but adds AEC-Q101 qualification, RoHS compliance, and enhanced process controls for automotive use. Unlike base-E3 or -M3 versions, the HE3 suffix guarantees extended reliability testing including HTGB, H3TRB, and temperature cycling - critical for under-hood and ADAS module deployment.
P4SMA27AHE3_A/H 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/H FAQ
1.How can I place an order for P4SMA27AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA27AHE3_A/H 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/H reliable?
The price and inventory of P4SMA27AHE3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for P4SMA27AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA27AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA27AHE3_A/H?
P4SMA27AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA27AHE3_A/H 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/H?
For technical support, including P4SMA27AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA27AHE3_A/H requirements.
6.How does Aetrix verify that P4SMA27AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA27AHE3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of P4SMA27AHE3_A/H?
All P4SMA27AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA27AHE3_A/H, 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/H part is unused and in its original packaging.
Return procedure for P4SMA27AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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