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Vishay General Semiconductor - Diodes Division P4SMA6.8AHE3_A/H
- Part No.:
- P4SMA6.8AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA6.8AHE3_A/H.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,158
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Product details
Overview
P4SMA6.8AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, with 6.45 V minimum breakdown voltage (VBR), 5.8 V standoff voltage (VWM), and 400 W peak pulse power rating at 10/1000 µs waveform - designed for clamping inductive switching transients on low-voltage DC rails in automotive sensor interfaces and industrial control I/O.
For engineers reviewing the P4SMA6.8AHE3_A/H datasheet, P4SMA6.8AHE3_A/H pinout, P4SMA6.8AHE3_A/H application, or P4SMA6.8AHE3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, 10.5 V maximum clamping voltage at 38.1 A peak pulse current, ±0.057 %/°C VBR temperature coefficient, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a unidirectional avalanche diode with glass-passivated junction, optimized for fast response (<1 ns) to transient overvoltages. Its clamping behavior is defined by a 10.5 V VC at 38.1 A IPPM under 10/1000 µs waveform, with 1000 µA max reverse leakage at 5.8 V VWM.
Thermal performance is characterized by 120 °C/W junction-to-ambient thermal resistance (RθJA) and 30 °C/W junction-to-lead (RθJL). It supports 40 A non-repetitive forward surge current (IFSM) and operates across -65 °C to +150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min) | 6.45 V - ensures reliable avalanche conduction onset above normal 5.8 V rail operation |
| VWM | 5.8 V - maximum continuous reverse working voltage without significant leakage |
| VC @ IPPM | 10.5 V at 38.1 A - clamps transients to safe level for 5 V logic and microcontroller I/O protection |
| PPPM | 400 W - handles high-energy inductive spikes (e.g., relay coil de-energization) without failure |
| IPPM | 38.1 A - peak surge current capability under standardized 10/1000 µs test waveform |
| TJ max | +150 °C - enables use in under-hood automotive environments and thermally constrained PCBs |
| Temp. Coeff. VBR | ±0.057 %/°C - minimal drift over temperature, critical for stable clamping in wide ambient ranges |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to protected circuit ground or low-side reference; forms current loop during clamping |
| Cathode | Avalanche conduction terminal | Connected to protected line (e.g., 5 V supply or signal); conducts when VAK exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per stress test requirements |
| 400 W peak pulse power | Withstands repetitive 10/1000 µs transients up to 0.01 % duty cycle without degradation |
| Glass passivated junction | Ensures stable VBR and low leakage over lifetime, even under humidity and thermal stress |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without pre-baking or special handling |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for downstream ICs |
Applications
| Automotive Sensor Interface | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., temperature, pressure) from load dump and ISO 7637-2 pulse 1/2a/5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor supply line and chassis ground to clamp negative-going transients and positive surges. Use Value: Limits voltage excursion to ≤10.5 V during 38.1 A surge, preserving integrity of 5 V tolerant ASICs and ADC inputs. | Use Scenario: Safeguarding 24 V digital input modules against field-wiring induced transients and relay contact bounce. IC Role / Device Role / Timing Role: Standoff-connected TVS on input line to shunt energy before it reaches optocoupler or Schmitt trigger input stage. Use Value: Enables robust operation in factory environments where >1 kV fast transients occur, with <1 ns response preventing latch-up in interface ICs. |
| Consumer Power Adapter Protection | Telecom Line Card Surge Suppression |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters powering USB-C PD controllers and PMICs. IC Role / Device Role / Timing Role: Clamping diode on 5 V/9 V/15 V output rail to absorb residual switching noise and external surge coupling. Use Value: Maintains compliance with IEC 61000-4-5 Level 3 (1 kV) while occupying minimal board area in space-constrained adapters. | Use Scenario: Front-end protection for Ethernet PHYs and PoE-powered devices exposed to lightning-induced surges on RJ45 lines. IC Role / Device Role / Timing Role: First-stage unidirectional suppressor on DC bias lines feeding magnetics or isolation transformers. Use Value: Provides precise 5.8 V standoff and 10.5 V clamping to prevent damage to 3.3 V/5 V PHYs without affecting signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8A-E3/52 | Higher 600 W PPPM, SMB (DO-214AA) package, 11.2 V VC at 53.3 A | Requires larger pad layout; better suited for higher-energy transients in motor drives | Select when >400 W surge margin is required and board space allows SMB footprint |
| 1.5SMC6.8A | Same VBR/VWM, but SMC (DO-214AB) package, 10.5 V VC at 38.1 A, 1500 W PPPM | Larger thermal mass; used in high-power industrial SMPS secondary-side protection | Choose for legacy designs using SMC or where higher single-pulse energy absorption is needed |
Compared with SMBJ6.8A-E3/52 and 1.5SMC6.8A, the P4SMA6.8AHE3_A/H offers optimal balance of AEC-Q101 qualification, compact SMA footprint, and precise 10.5 V clamping - making it preferred for space-constrained automotive and industrial edge nodes where reliability and size are co-prioritized.
Availability
P4SMA6.8AHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and consumer power adapter designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4SMA6.8AHE3_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 optimization.
The P4SMA Series is engineered for surface-mount transient suppression in automotive, industrial, and telecom systems - delivering AEC-Q101 qualified, high-power-density TVS diodes with tight parametric control and robust thermal performance.
FAQ
What is the breakdown voltage tolerance for P4SMA6.8AHE3_A/H?
The P4SMA6.8AHE3_A/H has a specified breakdown voltage (VBR) range of 6.45 V to 7.14 V at 10 mA test current, per Vishay's datasheet revision 09-Jan-2024. This ±5 % tolerance ensures consistent clamping onset across production lots while maintaining compatibility with 5 V system margins. The P4SMA6.8AHE3_A/H meets this specification under standard test conditions at TA = 25 °C.
Is P4SMA6.8AHE3_A/H suitable for bidirectional transient protection?
No, P4SMA6.8AHE3_A/H is a unidirectional TVS diode, as confirmed by its part number suffix "A" and explicit marking "6V8A" in the Vishay datasheet. Bidirectional variants use "CA" suffix (e.g., P4SMA6.8CA). Using P4SMA6.8AHE3_A/H for bidirectional protection would leave the forward-biased direction unprotected; always verify polarity alignment in circuit design for the P4SMA6.8AHE3_A/H.
What is the maximum clamping voltage of P4SMA6.8AHE3_A/H and under what test condition?
The maximum clamping voltage (VC) of P4SMA6.8AHE3_A/H is 10.5 V, measured at 38.1 A peak pulse current (IPPM) using the standardized 10/1000 µs double-exponential waveform. This value is guaranteed across the operating temperature range and defines the upper voltage limit imposed on protected circuits during surge events - a critical parameter for ensuring compatibility with 5 V logic thresholds in the P4SMA6.8AHE3_A/H application.
Does P4SMA6.8AHE3_A/H require derating at elevated ambient temperatures?
Yes, P4SMA6.8AHE3_A/H must be derated above TA = 25 °C per Figure 2 in the Vishay datasheet: peak pulse power decreases linearly to 50 % at TA = 100 °C. For example, at 75 °C ambient, PPPM is reduced to ~250 W. Thermal design must account for RθJA = 120 °C/W and mounting on 5.0 mm × 5.0 mm copper pads, as specified for the P4SMA6.8AHE3_A/H.
What does the "HE3_A/H" suffix indicate in P4SMA6.8AHE3_A/H?
The "HE3" denotes RoHS-compliant and AEC-Q101 qualified construction; "A" indicates revision level per Vishay's internal coding; "H" specifies 7-inch tape-and-reel packaging with 1800 units per reel. This full suffix confirms the P4SMA6.8AHE3_A/H meets automotive reliability standards and is supplied in SMT-ready format compatible with high-speed pick-and-place equipment.
P4SMA6.8AHE3_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):
- 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_A/H FAQ
1.How can I place an order for P4SMA6.8AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA6.8AHE3_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 P4SMA6.8AHE3_A/H reliable?
The price and inventory of P4SMA6.8AHE3_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 P4SMA6.8AHE3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA6.8AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA6.8AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA6.8AHE3_A/H?
P4SMA6.8AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA6.8AHE3_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 P4SMA6.8AHE3_A/H?
For technical support, including P4SMA6.8AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA6.8AHE3_A/H requirements.
6.How does Aetrix verify that P4SMA6.8AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA6.8AHE3_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 P4SMA6.8AHE3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA6.8AHE3_A/H?
All P4SMA6.8AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA6.8AHE3_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 P4SMA6.8AHE3_A/H part is unused and in its original packaging.
Return procedure for P4SMA6.8AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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