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Vishay General Semiconductor - Diodes Division P4SMA6.8AHM3_A/H
- Part No.:
- P4SMA6.8AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA6.8AHM3_A/H.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,126
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Product details
Overview
P4SMA6.8AHM3_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), 5.80 V maximum stand-off voltage (VWM), and 10.5 V clamping voltage (VC) at 38.1 A peak pulse current - designed to protect ICs, MOSFETs, and sensor signal lines against inductive switching transients and ESD in automotive and industrial electronics.
For engineers reviewing the P4SMA6.8AHM3_A/H datasheet, P4SMA6.8AHM3_A/H pinout, P4SMA6.8AHM3_A/H application, or P4SMA6.8AHM3_A/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), 400 W peak pulse power rating, and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker test.
Technical Context
This unidirectional TVS diode operates as a clamping device that enters avalanche conduction when reverse voltage exceeds its 6.45–7.14 V breakdown range at 10 mA test current, limiting transient energy to ≤10.5 V across protected circuitry. Its glass-passivated junction ensures stable leakage (<1000 µA at VWM) and fast response time (<1 ns).
Designed for surface-mount assembly on 0.2" × 0.2" copper pads, it delivers 400 W peak pulse power (10/1000 µs waveform) with 30 °C/W junction-to-lead thermal resistance and MSL Level 1 moisture sensitivity - enabling reliable automated placement and reflow compatibility up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 6.45 V / 7.14 V at 10 mA - defines precise avalanche onset threshold for predictable clamping behavior |
| VWM | 5.80 V - maximum continuous reverse operating voltage before leakage exceeds 1000 µA |
| VC @ IPPM | 10.5 V at 38.1 A - clamped voltage during 400 W transient, limiting stress on downstream components |
| PPPM | 400 W (10/1000 µs) - peak surge handling capacity under standardized lightning/surge waveform |
| RθJA | 120 °C/W - thermal resistance from junction to ambient, critical for derating above 25 °C ambient |
| TJ max | +150 °C - maximum junction temperature supporting operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
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 indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connects to ground or lower-potential node in unidirectional protection configuration |
| Cathode | Avalanche conduction terminal | Connects to protected line; clamps transients to VC when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free & RoHS-compliant | P4SMA6.8AHM3_A/H uses HM3 suffix material - meets environmental compliance without compromising surge robustness |
| 400 W peak pulse power | Handles high-energy transients per ISO 7637-2 and IEC 61000-4-5 standards with minimal footprint |
| Glass passivated junction | Ensures stable VBR tolerance (±5%), low leakage, and long-term reliability under thermal cycling |
| MSL Level 1 | Unlimited floor life at ≤30 °C/60% RH - eliminates bake requirements prior to reflow |
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and inductive kickback in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between signal line and ground, responding within <1 ns to limit voltage to 10.5 V. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V interface ICs while maintaining signal integrity during 400 W surges. | Use Scenario: Safeguarding digital input/output channels of programmable logic controllers against field-wiring transients and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-rated TVS (5.80 V) installed at connector entry point to shunt surge current before reaching isolation barriers or microcontrollers. Use Value: Enables robust 24 V DC I/O design with 40 A non-repetitive surge capability and 120 °C/W thermal management on standard PCB copper. |
| Consumer Power Adapter Protection | Telecom Line Interface Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters and USB PD chargers exposed to mains-borne surges. IC Role / Device Role / Timing Role: Fast-clamping TVS connected across DC output rails to clamp transient spikes before reaching LDOs or USB controllers. Use Value: Maintains 5 V output regulation during 10/1000 µs surges up to 38.1 A, with <1000 µA leakage preserving no-load efficiency. | Use Scenario: Primary protection for Ethernet PHYs, DSL modems, and VoIP interface circuits subjected to lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: Unidirectional TVS deployed on differential pairs or supply rails to clamp common-mode transients to safe levels. Use Value: Provides 10.5 V clamping at full 400 W rating while meeting UL 497B recognition for telecom protector classification. |
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 | Higher 600 W peak pulse power; larger SMB (DO-214AA) package; 11.2 V clamping at 34.4 A | Better suited for higher-energy surges but requires larger board area and different pad layout | Select when system-level surge tests exceed 400 W or when legacy SMB footprint is fixed |
| 1.5SMC6.8A | Same 400 W rating but in larger SMC (DO-214AB) package; 10.5 V clamping at 38.1 A; higher RθJA (100 °C/W) | Lower thermal resistance enables higher ambient operation but sacrifices miniaturization | Choose when thermal margin is constrained and board space allows SMC footprint |
Compared with SMBJ6.8A and 1.5SMC6.8A, P4SMA6.8AHM3_A/H offers the smallest footprint (SMA) with identical clamping performance and AEC-Q101 qualification - making it optimal for space-constrained automotive and portable industrial designs where 400 W surge immunity suffices.
Availability
P4SMA6.8AHM3_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, halogen-free compliance, and AEC-Q101 reliability validation.
Supply support for P4SMA6.8AHM3_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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA series is engineered for high-volume surface-mount transient suppression in automotive, industrial, and telecom systems - balancing compact size, AEC-Q101 qualification, and repeatable 400 W surge performance in the SMA package.
FAQ
What is the breakdown voltage range of the P4SMA6.8AHM3_A/H?
The P4SMA6.8AHM3_A/H has a guaranteed breakdown voltage (VBR) range of 6.45 V to 7.14 V at 10 mA test current, measured per ANSI/IEEE C62.35. This tight tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage protection design for 5 V and 3.3 V systems. The P4SMA6.8AHM3_A/H maintains this specification under standard test conditions (TA = 25 °C) and is validated across its full operating temperature range.
Is the P4SMA6.8AHM3_A/H qualified for automotive applications?
Yes, the P4SMA6.8AHM3_A/H carries the HM3 suffix and is explicitly AEC-Q101 qualified per Vishay's documentation (Rev. 09-Jan-2024, Doc. #88367). It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD per JESD22-A114. This qualification confirms suitability for under-hood and cabin-mounted automotive electronics where reliability under thermal and mechanical stress is mandatory. The P4SMA6.8AHM3_A/H meets these requirements in its standard SMA package without derating.
What is the maximum clamping voltage of the P4SMA6.8AHM3_A/H during a surge event?
The P4SMA6.8AHM3_A/H clamps to a maximum of 10.5 V at its rated peak pulse current of 38.1 A, using the industry-standard 10/1000 µs double-exponential waveform. This value is measured under specified mounting conditions (0.2" × 0.2" copper pads) and defines the upper voltage limit imposed on protected circuitry during worst-case transients. The P4SMA6.8AHM3_A/H achieves this clamping performance while maintaining low incremental surge resistance, ensuring minimal overshoot and rapid stabilization.
Does the P4SMA6.8AHM3_A/H meet RoHS and halogen-free requirements?
Yes, the "HM3" suffix in P4SMA6.8AHM3_A/H denotes halogen-free, RoHS-compliant construction per Vishay's material categorization (Doc. #99912). The molding compound meets UL 94 V-0 flammability rating, and terminals are matte tin plated per J-STD-002. All materials are verified compliant with EU RoHS Directive 2011/65/EU and JEDEC J-STD-20 MSL Level 1 - confirming suitability for environmentally regulated markets and high-reliability manufacturing processes. The P4SMA6.8AHM3_A/H carries no exemptions and is fully lead-free.
What is the thermal resistance of the P4SMA6.8AHM3_A/H, and how does it affect layout?
The P4SMA6.8AHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended 0.2" × 0.2" copper pads per terminal. This value directly impacts power derating: above 25 °C ambient, its 400 W peak pulse rating must be reduced per Fig. 2 in the datasheet. Layout must replicate the specified pad dimensions and ensure adequate copper area to maintain thermal performance. The P4SMA6.8AHM3_A/H also features RθJL = 30 °C/W, enabling effective heat transfer to PCB traces or thermal vias if used.
P4SMA6.8AHM3_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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA6.8AHM3_A/H FAQ
1.How can I place an order for P4SMA6.8AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA6.8AHM3_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 P4SMA6.8AHM3_A/H reliable?
The price and inventory of P4SMA6.8AHM3_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 P4SMA6.8AHM3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA6.8AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA6.8AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA6.8AHM3_A/H?
P4SMA6.8AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA6.8AHM3_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 P4SMA6.8AHM3_A/H?
For technical support, including P4SMA6.8AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA6.8AHM3_A/H requirements.
6.How does Aetrix verify that P4SMA6.8AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA6.8AHM3_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 P4SMA6.8AHM3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA6.8AHM3_A/H?
All P4SMA6.8AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA6.8AHM3_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 P4SMA6.8AHM3_A/H part is unused and in its original packaging.
Return procedure for P4SMA6.8AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA6.8AHM3_A/H Tags
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