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Vishay General Semiconductor - Diodes Division P6SMB6.8AHE3_B/I
- Part No.:
- P6SMB6.8AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB6.8AHE3_B/I.pdf
- Description:
- 600W,6.8V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,909
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Product details
Overview
P6SMB6.8AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 6.8 V breakdown voltage (VBR = 6.45–7.14 V at IT = 10 mA), 5.8 V stand-off voltage (VWM), and 10.5 V clamping voltage (VC) at 57.1 A peak pulse current (IPPM). It delivers 600 W peak pulse power with 10/1000 µs waveform and is AEC-Q101 qualified for automotive applications.
For engineers reviewing the P6SMB6.8AHE3_B/I datasheet, P6SMB6.8AHE3_B/I pinout, P6SMB6.8AHE3_B/I application, or P6SMB6.8AHE3_B/I equivalent, this device serves as a robust overvoltage protection solution for low-voltage DC rails, sensor interfaces, and automotive ECUs where fast response (<1 ps), low clamping ratio (VC/VBR ≈ 1.55), and MSL Level 1 reliability are required.
Technical Context
The P6SMB6.8AHE3_B/I operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1000 µA at VWM), while thermal resistance RθJA = 100 °C/W supports operation up to TJ = 150 °C.
It meets J-STD-020 MSL Level 1 (peak reflow ≤260 °C), features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and is halogen-free per Vishay's HM3 material standard - though the HE3 suffix confirms RoHS-compliant AEC-Q101 qualification without halogen-free claim.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA - defines precise avalanche initiation window for repeatable clamping onset |
| VWM | 5.8 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 10.5 V at 57.1 A - clamped voltage seen by protected circuit during 600 W transient event |
| IPPM | 57.1 A - peak surge current survivable with 10/1000 µs waveform and 0.01% duty cycle |
| PPPM | 600 W - standardized surge power handling capacity per IEC 61000-4-5 and ISO 7637-2 |
| TJ max | +150 °C - enables use in under-hood automotive environments without derating below 125 °C ambient |
| Package | SMB (DO-214AA) - 3.94 mm × 2.20 mm footprint compatible with automated SMT placement and IPC-7351B land patterns |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity marked with cathode band. Dimensions: 3.94 mm × 2.20 mm × 2.30 mm (L × W × H); terminals are matte tin-plated for solderability per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; carries forward surge current during reverse clamp |
| Cathode | Avalanche conduction terminal | Marked with band; connected to higher-potential rail; conducts reverse current above VBR to shunt transients |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/5a transients on 12 V systems without degradation |
| Clamping ratio VC/VBR ≈ 1.55 | Minimizes overvoltage stress on downstream ICs such as CAN transceivers or microcontrollers |
| MSL Level 1 rating | Enables single-reflow assembly without moisture sensitivity concerns or baking requirements |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage drift across 15-year automotive service life |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protects LIN bus transceivers and power supply inputs in BCMs exposed to load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND, clamping transients within 1 ns to limit voltage to ≤10.5 V. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V regulators and MCU I/O pins during ISO 7637-2 Pulse 5a events (up to 60 V, 100 ms). |
Use Scenario: Shields analog front-end circuits (e.g., RTD, thermocouple amplifiers) in PLC I/O modules from ESD and field-wiring surges. IC Role / Device Role / Timing Role: Placed at signal entry point to absorb ±8 kV contact ESD (IEC 61000-4-2) and 1 kV ring wave transients (IEC 61000-4-12). Use Value: Maintains signal integrity by limiting clamped voltage to 10.5 V while adding <1 pF parasitic capacitance - no bandwidth degradation in sub-MHz sensor signals. |
| Consumer Power Adapter Input Stage | Telecom PoE-PD Surge Protection |
|
Use Scenario: Guards primary-side controller ICs and rectifier bridges in AC/DC adapters against lightning-induced surges on mains input. IC Role / Device Role / Timing Role: Mounted across bridge rectifier output to clamp differential-mode transients before bulk capacitor. Use Value: Absorbs 600 W pulses without failure, enabling compliance with UL 1449 Type 4 SPD requirements for Class II power supplies. |
Use Scenario: Protects Power over Ethernet (PoE) powered devices (PDs) from cable-borne surges entering via RJ45 interface. IC Role / Device Role / Timing Role: Paired with common-mode chokes on each twisted pair; unidirectional configuration suppresses positive-going surges on data lines referenced to PD ground. Use Value: Enables IEEE 802.3af/at-compliant surge immunity (up to 100 V, 2 Ω source) while maintaining <100 ns response time to preserve packet integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8A-E3/52 | Same VBR range (6.45–7.14 V), but SMA package (smaller footprint, lower IPPM = 47.5 A, PPPM = 400 W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or high-current load dump | Select when board space is constrained and surge energy does not exceed 400 W |
| 1.5SMC6.8A | Same electrical specs but SMC (DO-214AB) package - larger footprint (7.11 mm × 6.22 mm), higher thermal mass, RθJA = 30 °C/W | Better thermal performance for repetitive surges; incompatible with SMB land pattern | Choose for industrial designs requiring >1000 cycles of 600 W surges or extended high-temp operation |
Compared with SMAJ6.8A-E3/52, P6SMB6.8AHE3_B/I provides 50% higher surge power margin and automotive qualification; versus 1.5SMC6.8A, it offers 3× smaller PCB area and compatibility with high-density automotive layouts - making it optimal for space-constrained AEC-Q101 designs needing full 600 W capability.
Availability
P6SMB6.8AHE3_B/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and consumer power adapter designs requiring stable component supply, AEC-Q101 traceability, and consistent 600 W transient immunity.
Supply support for P6SMB6.8AHE3_B/I 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 automotive-grade validation.
The P6SMB6.8AHE3_B/I belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, low-clamping overvoltage protection in harsh environments - especially automotive, industrial, and telecom infrastructure where repeatable surge survival is critical.
FAQ
What is the breakdown voltage tolerance of P6SMB6.8AHE3_B/I?
The P6SMB6.8AHE3_B/I has a specified breakdown voltage (VBR) range of 6.45 V to 7.14 V at test current IT = 10 mA, representing a ±5% tolerance around the nominal 6.8 V rating. This tight tolerance ensures predictable clamping behavior across production lots and supports reliable design margins in safety-critical automotive applications where P6SMB6.8AHE3_B/I is commonly deployed.
Is P6SMB6.8AHE3_B/I suitable for bidirectional transient protection?
No, P6SMB6.8AHE3_B/I is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay specifies part numbers ending in "CA" (e.g., P6SMB6.8CA). Using P6SMB6.8AHE3_B/I in bidirectional configurations risks forward conduction during negative transients and inadequate protection - always verify polarity alignment when integrating P6SMB6.8AHE3_B/I into circuit designs.
What does the "HE3_B/I" suffix mean in P6SMB6.8AHE3_B/I?
In P6SMB6.8AHE3_B/I, "HE3" denotes RoHS-compliant construction with AEC-Q101 qualification; "B" indicates AEC-Q101 qualification level for the 6.8 V to 220 V voltage range; and "I" specifies packaging in 13-inch tape-and-reel format with 3200 units per reel. This full suffix confirms P6SMB6.8AHE3_B/I meets automotive reliability standards and is optimized for high-volume SMT assembly.
What is the maximum clamping voltage of P6SMB6.8AHE3_B/I under surge conditions?
The maximum clamping voltage (VC) of P6SMB6.8AHE3_B/I is 10.5 V at peak pulse current IPPM = 57.1 A, measured with a 10/1000 µs waveform. This value represents the highest voltage imposed on the protected circuit during worst-case transient events, enabling designers to verify that downstream components (e.g., 5 V MCUs or CAN transceivers) remain within absolute maximum ratings when P6SMB6.8AHE3_B/I is active.
Does P6SMB6.8AHE3_B/I require derating at elevated ambient temperatures?
Yes, P6SMB6.8AHE3_B/I must be derated above TA = 25 °C per Figure 2 in the Vishay datasheet (Document 88370). At 85 °C ambient, its peak pulse power drops to ~420 W (70% of 600 W), and at 125 °C, it falls to ~240 W (40%). Designers must apply these derating curves when using P6SMB6.8AHE3_B/I in under-hood automotive locations or enclosed industrial enclosures to ensure sustained reliability.
P6SMB6.8AHE3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, 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):
- 57.1A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
P6SMB6.8AHE3_B/I FAQ
1.How can I place an order for P6SMB6.8AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB6.8AHE3_B/I 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 P6SMB6.8AHE3_B/I reliable?
The price and inventory of P6SMB6.8AHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB6.8AHE3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB6.8AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB6.8AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB6.8AHE3_B/I?
P6SMB6.8AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB6.8AHE3_B/I 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 P6SMB6.8AHE3_B/I?
For technical support, including P6SMB6.8AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB6.8AHE3_B/I requirements.
6.How does Aetrix verify that P6SMB6.8AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB6.8AHE3_B/I 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 P6SMB6.8AHE3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB6.8AHE3_B/I?
All P6SMB6.8AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB6.8AHE3_B/I, 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 P6SMB6.8AHE3_B/I part is unused and in its original packaging.
Return procedure for P6SMB6.8AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB6.8AHE3_B/I Tags
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