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Vishay General Semiconductor - Diodes Division P6SMB68A-E3/5B
- Part No.:
- P6SMB68A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68A-E3/5B.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,883
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Product details
Overview
P6SMB68A-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 68 V breakdown voltage (VBR = 64.6–71.4 V at IT = 1.0 mA), 58.1 V stand-off voltage (VWM), and 92.0 V maximum clamping voltage (VC) at 6.5 A peak pulse current (IPPM), delivering 600 W peak pulse power with a 10/1000 μs waveform - commonly used to protect MOSFETs and sensor interfaces in industrial power supplies.
For engineers reviewing the P6SMB68A-E3/5B datasheet, P6SMB68A-E3/5B pinout, P6SMB68A-E3/5B application, or P6SMB68A-E3/5B equivalent, this device is selected for robust overvoltage protection where low-profile SMT placement, AEC-Q101 qualification readiness (via HE3/HM3 variants), and stable clamping under repetitive surge conditions are required.
Technical Context
The P6SMB68A-E3/5B operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable leakage performance (<1.0 μA at VWM) and fast response time (<1.0 ns), enabling effective suppression of ESD and inductive switching spikes.
Thermally, it exhibits RθJA = 100 °C/W and RθJL = 20 °C/W, supporting operation up to TJ = +150 °C. The cathode band identifies polarity, and its SMB package meets UL 94 V-0 flammability rating with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102.
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 avalanche onset window for predictable clamping initiation |
| VWM | 58.1 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 92.0 V at 6.5 A - clamped voltage during 10/1000 μs surge, limiting stress on downstream ICs |
| PPPM | 600 W - peak transient power handling capability under standardized surge waveform |
| IPPM | 6.5 A - maximum non-repetitive peak pulse current the device safely conducts |
| TJ max. | +150 °C - maximum junction temperature enabling use in high-ambient industrial environments |
| Package | SMB (DO-214AA) - low-profile SMT footprint (5.59 mm × 3.94 mm) optimized for automated assembly |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode-indicated by molded band. Dimensions: 5.59 mm × 3.94 mm × 2.29 mm (L × W × H). Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per Vishay recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (reverse-biased during protection) | Connected to protected line's lower-potential side; forms current path during clamping |
| Cathode | Reverse-biased terminal during normal operation | Marked by band; connected to higher-potential rail (e.g., VCC or signal reference); initiates avalanche conduction when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables reliable suppression of high-energy transients without thermal runaway in compact layouts |
| Glass passivated junction | Ensures long-term stability of leakage current and breakdown voltage across temperature and life cycles |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT reflow profiles without moisture-related failure risk |
| RoHS-compliant, matte tin-plated leads | Guarantees solderability per J-STD-002 and whisker resistance per JESD 201 Class 2 |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving protection margin for sensitive nodes |
Applications
| Industrial Power Supply Protection | Automotive Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting DC-DC converter output rails against load dump and inductive kickback in factory automation controllers. IC Role / Device Role / Timing Role: Unidirectional TVS placed between output rail and ground to clamp surges before they reach downstream regulators or microcontrollers. Use Value: Limits transient voltage to ≤92.0 V, preventing latch-up or gate oxide damage in 60 V-rated MOSFETs and LDOs. |
Use Scenario: Shielding CAN or LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from ESD and battery reversal events. IC Role / Device Role / Timing Role: Standoff-rated protection element on signal lines, activated only during overvoltage events without affecting normal 0–5 V or 0–12 V signaling. Use Value: Maintains <1.0 μA leakage at 58.1 V, ensuring no signal distortion or bias shift during steady-state operation. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Safeguarding Ethernet PHY interface power pins and auxiliary control lines in base station remote units exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device on 3.3 V/5 V supply rails feeding PHY ICs, coordinated with upstream GDT or MOV for multi-stage protection. Use Value: Delivers 600 W pulse handling with <1 ns response, capturing fast-rising edge transients before propagation into silicon. |
Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals or H-bridge outputs to absorb inductive energy during PWM switching transitions. Use Value: Withstands 100 A IFSM (8.3 ms half-sine), tolerating repeated motor startup surges without degradation. |
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 (Vishay) | Same VBR/VC specs but in smaller SMA (DO-214AC) package; 400 W PPPM, lower IPPM (4.1 A) | Limited to lower-energy transients; unsuitable where 600 W headroom is required | Select when board space is constrained and surge energy remains below 400 W |
| 1.5SMC68A (ON Semiconductor) | Identical VBR (64.6–71.4 V), same SMB package, but rated for 1500 W PPPM and 15.4 A IPPM; higher VC (100 V) | Better for high-energy automotive load dump; clamps at higher voltage, reducing protection margin for 60 V systems | Prefer when system-level surge testing exceeds IEC 61000-4-5 Level 4 and VC margin allows |
Compared with SMAJ68A-E3/5B, P6SMB68A-E3/5B delivers 50 % higher surge power handling in the same footprint class; versus 1.5SMC68A, it offers tighter clamping (92.0 V vs. 100 V) at the cost of lower peak current capacity - critical for protecting 60 V-rated components without over-clamp stress.
Availability
P6SMB68A-E3/5B is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor modules, telecom line cards, and consumer appliance motor drives requiring stable component supply and RoHS-compliant SMT TVS protection.
Supply support for P6SMB68A-E3/5B 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, precision, and automotive-grade qualification.
The P6SMB Series targets high-reliability transient suppression in space-constrained, high-volume applications - engineered for consistent clamping performance, automated manufacturability, and compliance with industrial and automotive environmental standards.
FAQ
What is the maximum clamping voltage of the P6SMB68A-E3/5B under a 10/1000 μs surge?
The P6SMB68A-E3/5B has a maximum clamping voltage (VC) of 92.0 V at 6.5 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88370 and defines the upper voltage limit imposed on protected circuitry during transient events. Engineers use this parameter to verify that downstream components remain within their absolute maximum ratings during surge conditions.
Is the P6SMB68A-E3/5B RoHS-compliant and halogen-free?
Yes, the P6SMB68A-E3/5B carries the "E3" suffix, indicating it is RoHS-compliant and manufactured to commercial-grade specifications. It is not halogen-free - that designation applies to "M3" suffix variants (e.g., P6SMB68A-M3/5B). The E3 version uses matte tin-plated leads and meets JESD 201 Class 2 whisker resistance requirements.
What does the "5B" in P6SMB68A-E3/5B signify?
The "5B" denotes the packaging configuration: 13-inch diameter plastic tape and reel, containing 3200 units per reel. This differs from "52", which indicates a 7-inch reel with 750 units. The "5B" format supports high-volume SMT assembly lines requiring extended reel life and reduced changeover frequency during production runs of P6SMB68A-E3/5B.
Can the P6SMB68A-E3/5B be used in automotive applications?
The base P6SMB68A-E3/5B is qualified for commercial use. For automotive applications, Vishay offers AEC-Q101-qualified versions with "HE3" or "HM3" suffixes (e.g., P6SMB68AHE3_B). These variants undergo additional stress testing and lot traceability per AEC-Q101, while maintaining identical electrical specs. P6SMB68A-E3/5B itself is not AEC-Q101 certified.
How does the thermal resistance of the P6SMB68A-E3/5B affect its derating in real-world PCB layouts?
The P6SMB68A-E3/5B has RθJA = 100 °C/W under standard JEDEC test conditions (0.2" × 0.2" copper pads). In actual layouts with larger copper areas or internal planes, thermal resistance drops significantly - e.g., to ~40–60 °C/W - allowing higher sustained power dissipation. Derating curves in Figure 2 of document 88370 must be applied based on measured or simulated board-specific thermal impedance to ensure TJ stays ≤150 °C.
P6SMB68A-E3/5B 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB68A-E3/5B FAQ
1.How can I place an order for P6SMB68A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68A-E3/5B 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 P6SMB68A-E3/5B reliable?
The price and inventory of P6SMB68A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB68A-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB68A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68A-E3/5B?
P6SMB68A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68A-E3/5B 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 P6SMB68A-E3/5B?
For technical support, including P6SMB68A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68A-E3/5B requirements.
6.How does Aetrix verify that P6SMB68A-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB68A-E3/5B 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 P6SMB68A-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB68A-E3/5B?
All P6SMB68A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68A-E3/5B, 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 P6SMB68A-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB68A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB68A-E3/5B Tags
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