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Vishay General Semiconductor - Diodes Division P4SMA6.8AHE3/61
- Part No.:
- P4SMA6.8AHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA6.8AHE3/61.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,910
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Product details
Overview
P4SMA6.8AHE3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection of sensitive electronics. It features a 6.8 V breakdown voltage (VBR = 6.45–7.14 V at 10 mA), 5.8 V standoff voltage (VWM), 10.5 V clamping voltage (VC) at 38.1 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor signal lines, industrial I/O interfaces, and DC power rail protection.
For engineers reviewing the P4SMA6.8AHE3/61 datasheet, P4SMA6.8AHE3/61 pinout, P4SMA6.8AHE3/61 application, or P4SMA6.8AHE3/61 equivalent, this AEC-Q101 qualified TVS offers verified clamping performance, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability automotive and industrial PCB designs requiring robust ESD and load-dump immunity.
Technical Context
The P4SMA6.8AHE3/61 operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold to clamp transient energy into ground. Its glass-passivated junction ensures stable VBR tolerance (±5%) and fast response time (<1 ns), while the SMA (DO-214AC) package enables automated placement and thermal dissipation via copper pad mounting.
Rated for -65 °C to +150 °C junction temperature, it delivers 400 W peak pulse power at TA = 25 °C on 5.0 mm × 5.0 mm copper pads, derating linearly above 25 °C per Fig. 2. With 1000 µA maximum reverse leakage at VWM, it maintains low standby power loss in always-on circuits such as automotive CAN bus receivers and microcontroller I/O protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA - defines precise clamping onset window for reliable overvoltage triggering |
| VWM | 5.8 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 10.5 V at 38.1 A - actual clamped voltage during 400 W transient, limiting downstream IC stress |
| IPPM | 38.1 A (10/1000 µs) - peak surge current capability under standardized lightning/surge test waveform |
| PPPM | 400 W - peak pulse power handling capacity, enabling protection against ISO 7637-2 Pulse 1/2a/5a transients |
| TJ max | +150 °C - supports operation in under-hood automotive environments and thermally constrained enclosures |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, cathode-banded unidirectional configuration. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to protected line (e.g., 5 V rail or sensor output); conducts during forward surge events |
| Cathode | Reverse-biased clamping terminal | Connected to ground; avalanches when reverse voltage exceeds VBR, shunting surge current to GND |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables compliance with ISO 16750-2 and SAE J1113-11 surge immunity requirements |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD robustness |
| Glass passivated junction | Ensures stable VBR over lifetime and resistance to humidity-induced parameter drift |
| MSL Level 1 (260 °C reflow) | Supports standard lead-free reflow without pre-baking or special handling |
| Low 1000 µA leakage at VWM | Minimizes standby current draw in battery-powered or always-on systems |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting analog output lines of engine coolant temperature sensors exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and MCU ADC input to clamp transients before signal conditioning stage. Use Value: Limits voltage seen by downstream op-amp and ADC to ≤10.5 V during 400 W surges, preventing latch-up or damage. |
Use Scenario: Shielding 24 V digital input modules in programmable logic controllers from inductive kickback and field wiring faults. IC Role / Device Role / Timing Role: Primary protection device on each channel's input node, mounted directly at connector entry point. Use Value: Clamps 10/1000 µs surges to 10.5 V within <1 ns, preserving signal integrity and enabling >100 kV ESD immunity per IEC 61000-4-2. |
| DC Power Rail Protection | Consumer USB Port ESD Guard |
|
Use Scenario: Safeguarding 5 V supply rails feeding microcontrollers and communication ICs in automotive infotainment head units. IC Role / Device Role / Timing Role: Parallel-connected TVS across VCC–GND, sized to absorb ISO 7637-2 Pulse 5a (load dump) energy. Use Value: Absorbs up to 400 W peak power without failure, maintaining rail stability during 12 V system transients. |
Use Scenario: ESD suppression on USB 2.0 D+ and D− lines in portable medical monitors and smart home hubs. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS placed inline with data lines to suppress ±15 kV contact discharge. Use Value: Provides sub-10.5 V clamping with minimal signal distortion, meeting USB-IF eye diagram and jitter requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8A | Same SMA package, identical VBR/VC, but not AEC-Q101 qualified; higher leakage (5 µA max at VWM) | Approved for commercial/industrial use only; unsuitable for automotive under-hood deployment | Select SMAJ6.8A only for cost-sensitive non-automotive applications where AEC-Q101 is not mandated. |
| 1.5SMC6.8A | Larger SMC (DO-214AB) package; same electrical specs but 1.5 kW peak power rating and higher thermal mass | Used where board space allows larger footprint and higher surge margin is required (e.g., telecom power supplies) | Choose 1.5SMC6.8A when system-level surge testing exceeds 400 W or PCB layout permits larger package. |
Compared with SMAJ6.8A and 1.5SMC6.8A, the P4SMA6.8AHE3/61 uniquely combines AEC-Q101 qualification, SMA footprint, and 400 W clamping in a single solution - making it the preferred choice for space-constrained automotive ECUs and industrial controllers requiring certified reliability.
Availability
P4SMA6.8AHE3/61 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and DC power rail safeguarding requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA6.8AHE3/61 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P4SMA6.8AHE3/61 belongs to Vishay's TRANSZORB® TVS family, engineered for high-energy transient suppression in harsh environments - particularly targeting automotive, industrial, and telecommunications infrastructure where robustness and qualification compliance are mandatory.
FAQ
What is the clamping voltage of P4SMA6.8AHE3/61 at its rated peak pulse current?
The P4SMA6.8AHE3/61 has a maximum clamping voltage (VC) of 10.5 V at 38.1 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per JEDEC standards and guarantees that downstream circuitry will not experience voltages exceeding 10.5 V during a 400 W transient event, ensuring safe operation of 5 V logic and analog components.
Is P4SMA6.8AHE3/61 suitable for automotive applications?
Yes, the P4SMA6.8AHE3/61 is AEC-Q101 qualified and specifically designed for automotive use. Its qualification covers temperature cycling, high-temperature reverse bias (HTRB), and ESD testing per JESD22-A114. The "HE3" suffix denotes RoHS-compliant and AEC-Q101 qualified construction, making P4SMA6.8AHE3/61 appropriate for engine control units, body electronics, and ADAS sensor interfaces.
What is the standoff voltage (VWM) of P4SMA6.8AHE3/61, and why does it matter?
The standoff voltage (VWM) of P4SMA6.8AHE3/61 is 5.8 V - the maximum continuous reverse voltage it can block without significant leakage. This parameter ensures compatibility with 5 V systems: since VWM > 5 V, the device remains non-conductive during normal operation, minimizing power loss and avoiding false triggering while still activating promptly during overvoltage events above ~6.5 V.
How does the SMA (DO-214AC) package of P4SMA6.8AHE3/61 affect PCB layout?
The SMA (DO-214AC) package of P4SMA6.8AHE3/61 measures 4.93 mm × 3.99 mm with 2.29 mm height and requires 5.0 mm × 5.0 mm copper pads per terminal for rated 400 W performance. Its low-profile design supports dense layouts and automated assembly, but thermal relief must follow Vishay's recommended pad layout (Document 88367, p.5) to maintain surge capability and avoid solder joint cracking during thermal cycling.
What is the maximum junction temperature rating for P4SMA6.8AHE3/61?
The P4SMA6.8AHE3/61 has a maximum junction temperature (TJ) rating of +150 °C, confirmed per its absolute maximum ratings table. This enables reliable operation in under-hood automotive environments and sealed industrial enclosures. Derating curves (Fig. 2 in Document 88367) show that peak pulse power decreases linearly above 25 °C ambient, reaching ~240 W at TA = 100 °C - a key consideration for thermal design validation.
P4SMA6.8AHE3/61 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):
- 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)
P4SMA6.8AHE3/61 FAQ
1.How can I place an order for P4SMA6.8AHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA6.8AHE3/61 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 P4SMA6.8AHE3/61 reliable?
The price and inventory of P4SMA6.8AHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA6.8AHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA6.8AHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA6.8AHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA6.8AHE3/61?
P4SMA6.8AHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA6.8AHE3/61 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 P4SMA6.8AHE3/61?
For technical support, including P4SMA6.8AHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA6.8AHE3/61 requirements.
6.How does Aetrix verify that P4SMA6.8AHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA6.8AHE3/61 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 P4SMA6.8AHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA6.8AHE3/61?
All P4SMA6.8AHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA6.8AHE3/61, 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 P4SMA6.8AHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA6.8AHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA6.8AHE3/61 Tags
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