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Vishay General Semiconductor - Diodes Division P4SMA20AHE3/61
- Part No.:
- P4SMA20AHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA20AHE3/61.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA20AHE3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 20 V standoff voltage (VWM), 21.0 V maximum breakdown voltage (VBR), and 27.7 V clamping voltage (VC) at 14.4 A peak pulse current (IPPM), designed to protect sensitive ICs and MOSFETs against inductive switching transients and ESD in automotive and industrial power rails.
For engineers reviewing the P4SMA20AHE3/61 datasheet, P4SMA20AHE3/61 pinout, P4SMA20AHE3/61 application, or P4SMA20AHE3/61 equivalent, this AEC-Q101 qualified TVS offers verified 400 W peak pulse power (10/1000 µs), low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability automotive ECUs and industrial sensor interfaces requiring robust overvoltage immunity without layout redesign.
Technical Context
The P4SMA20AHE3/61 operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable avalanche behavior under repetitive transient stress. Its thermal resistance (RθJA = 120 °C/W) and junction temperature limit (TJ max = 150 °C) define safe derating above 25 °C ambient per Figure 2.
It delivers 400 W peak pulse power (10/1000 µs waveform) up to 91 V, dropping to 300 W above that threshold, with 1.0 mA test current (IT) defining VBR and 1.0 µA reverse leakage (ID) at VWM. The device meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability requirements for PCB-mounted protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 17.1 V - Maximum continuous reverse voltage before significant leakage; sets operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 19.0–21.0 V at 1.0 mA - Avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 27.7 V at 14.4 A IPPM - Peak voltage seen by protected circuit during 400 W transient; defines worst-case stress on downstream components. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 µs) - Sustained energy absorption capability; validates protection against IEC 61000-4-5 surge events. |
| ID (Reverse Leakage) | 1.0 µA at VWM - Minimal standby power loss and signal integrity impact in high-impedance circuits. |
| TJ max | 150 °C - Enables operation in under-hood automotive environments and enclosed industrial enclosures. |
| AEC-Q101 Qualified | Yes - Certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to ground or low-side reference in unidirectional clamp configuration. |
| Cathode | Current exit terminal during reverse-biased clamping | Connected to protected line (e.g., 24 V rail); band-marked end absorbs positive transients. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Validates robustness against ISO 7637-2 Load Dump and IEC 61000-4-5 surges in 12/24 V systems. |
| AEC-Q101 qualification (HE3 suffix) | Confirms automotive-grade reliability for engine control units, body electronics, and ADAS sensors. |
| MSL Level 1 (260 °C reflow peak) | Enables single-pass lead-free reflow assembly without moisture-induced popcorn failure. |
| Glass passivated junction | Ensures stable VBR over lifetime and resistance to humidity-induced parameter drift. |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for industrial and transportation equipment safety certifications. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines in engine control modules from load dump transients (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between rail and chassis ground to shunt >100 V spikes within nanoseconds. Use Value: Limits rail voltage to ≤27.7 V during 400 W surges, preventing damage to MCU power inputs and CAN transceivers. |
Use Scenario: Shielding analog input pins of industrial pressure sensors from ESD and inductive kickback in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across signal and ground to suppress fast transients without distorting mV-level sensor outputs. Use Value: 1.0 µA leakage at 17.1 V ensures minimal offset error; 27.7 V clamping preserves ADC front-end integrity. |
| Telecom DC Power Input Protection | Consumer Device USB Port Surge Protection |
Use Scenario: Safeguarding -48 V telecom rectifier outputs against lightning-induced surges on central office equipment. IC Role / Device Role / Timing Role: Unidirectional TVS installed on primary DC bus to clamp negative-going transients while allowing normal forward bias operation. Use Value: 400 W rating handles repeated 10/1000 µs surges per GR-1089-CORE; AEC-Q101 grade supports extended field life. |
Use Scenario: Adding secondary-level surge immunity to USB VBUS lines in smart home hubs exposed to user-handling ESD. IC Role / Device Role / Timing Role: Compact SMA-packaged TVS placed adjacent to USB connector to intercept contact discharge before reaching USB controller. Use Value: Low-profile DO-214AC footprint fits tight board space; 27.7 V clamping prevents VBUS overvoltage latch-up in USB-PD negotiation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A | Same VWM (17.1 V), VC (27.7 V), and PPPM (400 W), but not AEC-Q101 qualified; RθJA = 110 °C/W vs. 120 °C/W. | Approved for commercial/industrial use only; unsuitable for automotive OEM designs requiring AEC certification. | Select when cost sensitivity outweighs automotive qualification requirements and thermal margin permits slightly higher power density. |
| 1.5SMC20A | Higher package thermal resistance (RθJA = 140 °C/W); same electrical specs but larger SMC (DO-214AB) footprint (7.11 mm × 6.22 mm vs. SMA's 4.50 mm × 3.99 mm). | Requires PCB layout change due to 30 % larger pad area; better suited for high-power industrial boards with ample real estate. | Choose only if existing design uses SMC footprint or requires higher long-duration surge margin beyond 10/1000 µs. |
Compared with SMAJ20A and 1.5SMC20A, P4SMA20AHE3/61 uniquely combines AEC-Q101 qualification, SMA package compactness, and validated 400 W clamping performance - making it the sole option for space-constrained automotive modules needing certified reliability without board redesign.
Availability
P4SMA20AHE3/61 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom DC power inputs, and consumer USB power protection requiring stable component supply and full traceability.
Supply support for P4SMA20AHE3/61 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, efficiency, and application-specific optimization.
The P4SMA Series targets high-volume, high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for automated SMT assembly, AEC-Q101 compliance, and consistent clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of the P4SMA20AHE3/61 at its rated peak pulse current?
The P4SMA20AHE3/61 has a maximum clamping voltage (VC) of 27.7 V at 14.4 A peak pulse current (IPPM), measured using the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during transient events and is confirmed in the Electrical Characteristics table of Vishay document 88367. The P4SMA20AHE3/61 maintains this clamping performance across its specified operating temperature range.
Is the P4SMA20AHE3/61 suitable for automotive applications?
Yes, the P4SMA20AHE3/61 is AEC-Q101 qualified, as indicated by the "HE3" suffix, and is explicitly listed in Vishay's documentation for automotive-grade use. It undergoes rigorous stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD validation per AEC standards. The P4SMA20AHE3/61 is approved for engine control units, body electronics, and ADAS sensor protection where reliability under harsh environmental conditions is mandatory.
What does the "HE3" suffix mean in P4SMA20AHE3/61?
The "HE3" suffix in P4SMA20AHE3/61 denotes RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance. It distinguishes this variant from commercial-grade "E3" parts and confirms compliance with automotive reliability requirements. The "61" indicates packaging in 7-inch diameter tape-and-reel format with 1800 units per reel, optimized for high-speed pick-and-place assembly.
How does the P4SMA20AHE3/61 compare to bidirectional TVS diodes like P4SMA20CA?
The P4SMA20AHE3/61 is unidirectional and features a cathode band for polarity identification, whereas P4SMA20CA is bidirectional with no polarity marking and symmetrical clamping in both directions. The P4SMA20AHE3/61 offers lower leakage (1.0 µA at VWM) and is preferred for DC rail protection where polarity is fixed; P4SMA20CA suits AC-coupled or differential signal lines. Their VWM, VBR, and VC values differ due to inherent architecture differences.
What is the maximum operating junction temperature for the P4SMA20AHE3/61?
The P4SMA20AHE3/61 has a maximum junction temperature (TJ max) of +150 °C, as specified in the Maximum Ratings table of Vishay document 88367. This rating enables reliable operation in under-hood automotive environments and sealed industrial enclosures. Derating of peak pulse power begins above TA = 25 °C per Figure 2, and thermal design must account for RθJA = 120 °C/W to avoid exceeding TJ max under sustained power dissipation.
P4SMA20AHE3/61 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):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 14.4A
- 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)
P4SMA20AHE3/61 FAQ
1.How can I place an order for P4SMA20AHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA20AHE3/61 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 P4SMA20AHE3/61 reliable?
The price and inventory of P4SMA20AHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA20AHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA20AHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA20AHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA20AHE3/61?
P4SMA20AHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA20AHE3/61 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 P4SMA20AHE3/61?
For technical support, including P4SMA20AHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA20AHE3/61 requirements.
6.How does Aetrix verify that P4SMA20AHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA20AHE3/61 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 P4SMA20AHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA20AHE3/61?
All P4SMA20AHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA20AHE3/61, 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 P4SMA20AHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA20AHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA20AHE3/61 Tags
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