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Vishay General Semiconductor - Diodes Division P4SMA6.8AHE3/5A
- Part No.:
- P4SMA6.8AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA6.8AHE3/5A.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,656
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Product details
Overview
P4SMA6.8AHE3/5A 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 6.45 V to 7.14 V breakdown voltage at 10 mA, 5.80 V maximum standoff voltage, 1000 µA reverse leakage at VWM, 10.5 V clamping voltage at 38.1 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used for protecting MOSFETs, ICs, and sensor signal lines in automotive and industrial electronics.
For engineers reviewing the P4SMA6.8AHE3/5A datasheet, P4SMA6.8AHE3/5A pinout, P4SMA6.8AHE3/5A application, or P4SMA6.8AHE3/5A 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 standard PCB copper pads.
Technical Context
This TVS diode operates as a clamping device that enters avalanche conduction when transient voltage exceeds its breakdown threshold, diverting surge current away from protected circuitry. Its glass-passivated junction ensures stable electrical characteristics and long-term reliability under repetitive surge stress.
Designed for unidirectional protection, it exhibits cathode-band polarity marking and requires correct orientation during PCB layout. Thermal resistance is 120 °C/W junction-to-ambient (on minimum pad layout) and 30 °C/W junction-to-lead, supporting operation across -65 °C to +150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 6.45 V to 7.14 V at 10 mA - defines precise avalanche initiation point for reliable clamping onset |
| Standoff Voltage VWM | 5.80 V - maximum continuous DC or RMS voltage the device blocks without significant leakage |
| Clamping Voltage VC | 10.5 V at 38.1 A IPPM - peak voltage seen by protected circuit during 10/1000 µs surge event |
| Peak Pulse Power PPPM | 400 W (10/1000 µs) - energy-handling capability for transient suppression without failure |
| Reverse Leakage ID | 1000 µA at VWM - low leakage preserves system efficiency and avoids false triggering |
| Junction Temperature Range | -65 °C to +150 °C - supports operation in harsh automotive and industrial environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability per stress test requirements |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating and MSL level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected line ground or low-side reference | Must be routed to lower-potential node during normal operation; enables unidirectional clamping from cathode to anode |
| Cathode | Current exit terminal in forward bias; marked with band on package body | Connected to protected line (e.g., power rail or signal trace); conducts surge current to ground path during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term parameter stability under thermal cycling and humidity stress |
| 400 W peak pulse power (10/1000 µs) | Handles common lightning-induced and inductive-switching surges without degradation in automotive and industrial systems |
| AEC-Q101 qualification | Validates robustness for automotive applications including engine control units, ADAS sensors, and infotainment power rails |
| Low profile SMA package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment |
| MSL Level 1 moisture sensitivity | Eliminates need for baking prior to reflow, reducing manufacturing complexity and cost |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 5 V or 12 V power rails in engine control modules against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between power input and ground, activated within nanoseconds of overvoltage event. Use Value: Limits rail voltage to ≤10.5 V during 38.1 A surge, preventing damage to downstream regulators and microcontrollers. |
Use Scenario: Shielding analog output lines of pressure or temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor mounted at connector interface to shunt fast-rising transients before reaching ADC input. Use Value: Maintains signal integrity with only 1000 µA leakage at 5.8 V, avoiding DC offset errors in precision measurement circuits. |
| Consumer Device USB Port Protection | Telecom Equipment DC Input Stage |
Use Scenario: Safeguarding USB VBUS lines in portable chargers and docking stations against hot-plug and ESD events. IC Role / Device Role / Timing Role: Standoff-rated TVS placed inline with VBUS to clamp transients while remaining non-conductive during normal 5 V operation. Use Value: Withstands >30 kV HBM ESD pulses and clamps to 10.5 V, preserving USB PHY functionality without latch-up risk. |
Use Scenario: Front-end surge protection for 48 V DC inputs in telecom base station power supplies. IC Role / Device Role / Timing Role: Primary clamping element in multi-stage protection network, absorbing initial surge energy before MOV or GDT stages. Use Value: Delivers 400 W pulse handling with low thermal resistance (30 °C/W junction-to-lead), enabling reliable duty-cycle operation in continuous-duty telecom infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8A-E3/52 | Higher 600 W PPPM rating; SMB package (DO-214AA), larger footprint and 135 °C TJ max | Better suited for higher-energy surges; less space-efficient than SMA | Select when surge energy exceeds 400 W but board area allows SMB footprint |
| 1.5SMC6.8A-E3/57 | Same 400 W PPPM but in larger SMC (DO-214AB) package; 170 °C TJ max; higher IFSM (50 A) | Preferred for high-temperature ambient environments (>130 °C) and higher forward surge immunity | Choose when thermal margin or single-half-sine surge robustness is critical over compactness |
Compared with P4SMA6.8AHE3/5A, SMBJ6.8A-E3/52 offers greater surge headroom in a larger package, while 1.5SMC6.8A-E3/57 provides superior thermal endurance and surge current capacity - both require PCB layout changes and are not pin-compatible replacements.
Availability
P4SMA6.8AHE3/5A is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, consumer USB power management, and telecom DC input protection requiring stable component supply and AEC-Q101 compliance.
Supply support for P4SMA6.8AHE3/5A 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The P4SMA Series is engineered for robust transient suppression in space-constrained, high-reliability applications - particularly targeting automotive, industrial, and communications systems where AEC-Q101 qualification and consistent clamping behavior are mandatory.
FAQ
What is the breakdown voltage range of the P4SMA6.8AHE3/5A?
The P4SMA6.8AHE3/5A has a specified breakdown voltage (VBR) range of 6.45 V to 7.14 V at 10 mA test current. This tight tolerance ensures predictable clamping onset across production lots and supports accurate system-level overvoltage design margins. The value is measured per ANSI/IEEE C62.35 standards and applies under TA = 25 °C conditions.
Is the P4SMA6.8AHE3/5A suitable for automotive applications?
Yes, the P4SMA6.8AHE3/5A is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix. It undergoes stress testing for temperature cycling, humidity, mechanical shock, and surge robustness required by automotive electronics standards. Its 150 °C maximum junction temperature and stable VBR drift support under-hood and ADAS module deployment.
What does the "/5A" suffix indicate in P4SMA6.8AHE3/5A?
The "/5A" suffix denotes the packaging configuration: 13-inch diameter plastic tape and reel containing 7500 units. This format is optimized for high-volume SMT assembly lines. The "HE3" portion confirms RoHS-compliant construction and AEC-Q101 qualification, while "A" specifies unidirectional polarity and 6.8 V nominal breakdown.
How does the clamping voltage of P4SMA6.8AHE3/5A compare to its standoff voltage?
The P4SMA6.8AHE3/5A has a maximum standoff voltage (VWM) of 5.80 V and a clamping voltage (VC) of 10.5 V at 38.1 A. This 4.7 V differential ensures sufficient margin between normal operating voltage and clamping threshold, preventing false triggering while guaranteeing effective suppression when transients exceed safe levels - critical for protecting 5 V logic and analog circuits.
Can P4SMA6.8AHE3/5A be used in bidirectional configurations?
No, P4SMA6.8AHE3/5A is strictly unidirectional, as indicated by the "A" suffix and cathode-band marking. For bidirectional protection, Vishay specifies part numbers ending in "CA" (e.g., P4SMA6.8CA). Using P4SMA6.8AHE3/5A in reverse-biased configurations risks permanent damage due to lack of symmetrical avalanche structure.
P4SMA6.8AHE3/5A 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):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 38.1A
- 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)
P4SMA6.8AHE3/5A FAQ
1.How can I place an order for P4SMA6.8AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA6.8AHE3/5A 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 P4SMA6.8AHE3/5A reliable?
The price and inventory of P4SMA6.8AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA6.8AHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA6.8AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA6.8AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA6.8AHE3/5A?
P4SMA6.8AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA6.8AHE3/5A 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 P4SMA6.8AHE3/5A?
For technical support, including P4SMA6.8AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA6.8AHE3/5A requirements.
6.How does Aetrix verify that P4SMA6.8AHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA6.8AHE3/5A 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 P4SMA6.8AHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA6.8AHE3/5A?
All P4SMA6.8AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA6.8AHE3/5A, 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 P4SMA6.8AHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA6.8AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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