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Vishay General Semiconductor - Diodes Division P6SMB68AHE3_B/I
- Part No.:
- P6SMB68AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68AHE3_B/I.pdf
- Description:
- 600W,68V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,715
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Product details
Overview
P6SMB68AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on power and signal lines. It features a 68 V breakdown voltage (VBR min/max = 64.6–71.4 V at 1 mA), 58.1 V stand-off voltage (VWM), 92.0 V maximum clamping voltage (VC) at 6.5 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the P6SMB68AHE3_B/I datasheet, P6SMB68AHE3_B/I pinout, P6SMB68AHE3_B/I application, or P6SMB68AHE3_B/I equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, junction temperature range (−65 °C to +150 °C), and thermal resistance (RθJA = 100 °C/W).
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below VWM = 58.1 V and rapidly transitions to low-impedance conduction above VBR (64.6–71.4 V), limiting transient overvoltages to ≤92.0 V at 6.5 A. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1.0 ns).
Designed for automated SMT assembly, it meets J-STD-020 MSL Level 1 (peak reflow 260 °C), has matte tin-plated leads compliant with JESD 22-B102, and supports repetitive surge duty cycle of 0.01 % under 10/1000 µs waveform conditions. The cathode band identifies polarity for unidirectional operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1.0 mA test current - defines precise voltage threshold where clamping begins |
| VWM | 58.1 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 92.0 V at 6.5 A - clamped voltage during 600 W transient, critical for downstream component survivability |
| PPPM | 600 W - peak pulse power handling per 10/1000 µs waveform, enabling robust ESD and lightning surge protection |
| TJ Range | −65 °C to +150 °C - wide junction temperature range supports automotive under-hood and industrial ambient use |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, informs PCB copper pad sizing for thermal management |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads. Cathode identified by molded band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected circuit ground or low-side reference | Provides return path during transient clamping; must be routed with low-inductance trace to minimize VPEAK overshoot |
| Cathode | Current exit terminal in forward bias; connected to line being protected (e.g., 12 V rail, signal input) | Marked with band; reverse-biased during normal operation; conducts only during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-line) without derating in standard layouts |
| Glass passivated junction | Ensures stable VBR tolerance (±5 %), low leakage (<1 µA), and long-term reliability under thermal cycling |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without preconditioning; eliminates moisture-related popcorning risk during assembly |
| SMB (DO-214AA) footprint | Standardized 3.94 mm × 2.20 mm outline compatible with high-speed pick-and-place and AOI inspection |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients (ISO 7637-2 Pulse 5a, up to 60 V/100 ms). IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive-going surges. Use Value: Limits voltage seen by downstream LDOs and microcontrollers to ≤92.0 V, preventing latch-up or gate oxide damage. |
Use Scenario: Shielding analog inputs of pressure/temperature sensors in PLC modules from EFT (IEC 61000-4-4) and ESD (IEC 61000-4-2). IC Role / Device Role / Timing Role: Low-capacitance TVS mounted directly at connector entry point to shunt fast transients before signal conditioning stage. Use Value: Clamps 4 kV contact discharge to <92 V within <1 ns, preserving ADC accuracy and avoiding false readings. |
| DC-DC Converter Input Protection | Telecom Line Card Surge Suppression |
|
Use Scenario: Safeguarding buck converter inputs in PoE-powered devices subjected to induced surges from adjacent AC wiring. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 48 V input rail, coordinated with upstream fuse and downstream OVP circuitry. Use Value: Absorbs 600 W transient energy without degradation, maintaining system uptime during field deployment. |
Use Scenario: Front-end protection for Ethernet PHY interfaces on telecom line cards exposed to lightning-induced surges (ITU-T K.21 Basic). IC Role / Device Role / Timing Role: First-stage unidirectional suppressor on DC bias line feeding isolated magnetics, paired with bidirectional TVS on data pairs. Use Value: Withstands repeated 10/700 µs surges up to 1 kV due to low incremental surge resistance and stable VC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ68A-E3/5B | Same VBR (64.6–71.4 V), but lower PPPM = 400 W; SMA package (DO-214AC), slightly larger footprint | Limited to lower-energy transients; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification or 600 W margin is unnecessary |
| 1.5SMC68A | Same electrical specs, but SMC (DO-214AB) package - 7.11 mm × 6.22 mm vs. SMB's 3.94 mm × 2.20 mm | Higher thermal mass allows higher average power but requires more PCB area | Choose for legacy designs using SMC footprints or where RθJA < 80 °C/W is required |
Compared with SMAJ68A-E3/5B and 1.5SMC68A, the P6SMB68AHE3_B/I delivers AEC-Q101 qualification in the smallest standardized surface-mount TVS package with full 600 W capability - making it optimal for space-constrained automotive and industrial modules requiring production-grade reliability.
Availability
P6SMB68AHE3_B/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, DC-DC converter inputs, and telecom line card surge protection requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for P6SMB68AHE3_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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB series was developed to deliver high-power, low-profile TVS protection for automotive and industrial systems where AEC-Q101 compliance, tight VBR tolerance, and automated assembly compatibility are mandatory.
FAQ
What is the clamping voltage of the P6SMB68AHE3_B/I under maximum rated surge current?
The P6SMB68AHE3_B/I exhibits a maximum clamping voltage (VC) of 92.0 V when subjected to its rated peak pulse current of 6.5 A (10/1000 µs waveform). This value is measured per JEDEC standards and guarantees predictable overvoltage limiting for downstream components such as microcontrollers or power MOSFETs during transient events. The P6SMB68AHE3_B/I maintains this clamping performance across its full operating temperature range.
Is the P6SMB68AHE3_B/I suitable for automotive applications?
Yes, the P6SMB68AHE3_B/I is AEC-Q101 qualified, as indicated by the "HE3" and "_B" suffixes in its ordering code. It has undergone stress testing for temperature cycling, high-temperature reverse bias, and ESD per automotive reliability standards. The P6SMB68AHE3_B/I is commonly deployed in engine control units, body control modules, and ADAS sensor interfaces where sustained operation from −40 °C to +125 °C ambient is required.
What does the "_B/I" suffix mean in P6SMB68AHE3_B/I?
The "_B" denotes AEC-Q101 qualification for the P6SMB68AHE3_B/I series (applicable to 6.8 V–220 V variants), while "/I" specifies packaging in 13-inch diameter plastic tape and reel with 3200 units per reel. This format enables high-volume SMT placement and satisfies traceability requirements for automotive and industrial production. The P6SMB68AHE3_B/I is RoHS-compliant and halogen-free per Vishay's material categorization.
How does the P6SMB68AHE3_B/I compare to bidirectional TVS diodes like P6SMB68CA?
The P6SMB68AHE3_B/I is unidirectional and intended for DC line protection where polarity is fixed (e.g., 12 V supply rails), offering tighter leakage control (<1.0 µA at VWM) and lower capacitance than its bidirectional counterpart P6SMB68CA. The P6SMB68CA supports AC-coupled or floating signal lines but exhibits higher reverse leakage and symmetric clamping in both directions. Selection depends on circuit topology - the P6SMB68AHE3_B/I is preferred for grounded-rail protection.
What PCB layout guidance applies to the P6SMB68AHE3_B/I for optimal surge performance?
For optimal transient suppression, route the P6SMB68AHE3_B/I with minimal trace length between the protected node and ground plane - ideally using dedicated thermal pads (0.2" × 0.2" copper per terminal per Vishay spec). Avoid vias in the current path; place the device within 5 mm of the connector or IC pin. The P6SMB68AHE3_B/I's low-inductance SMB package relies on short, wide traces to preserve its <1 ns response time and prevent voltage overshoot beyond VC.
P6SMB68AHE3_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):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 6.5A
- 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)
P6SMB68AHE3_B/I FAQ
1.How can I place an order for P6SMB68AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68AHE3_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 P6SMB68AHE3_B/I reliable?
The price and inventory of P6SMB68AHE3_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 P6SMB68AHE3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB68AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68AHE3_B/I?
P6SMB68AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68AHE3_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 P6SMB68AHE3_B/I?
For technical support, including P6SMB68AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68AHE3_B/I requirements.
6.How does Aetrix verify that P6SMB68AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB68AHE3_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 P6SMB68AHE3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB68AHE3_B/I?
All P6SMB68AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68AHE3_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 P6SMB68AHE3_B/I part is unused and in its original packaging.
Return procedure for P6SMB68AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB68AHE3_B/I Tags
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