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Vishay General Semiconductor - Diodes Division P6SMB68A-M3/5B
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- Part No.:
- P6SMB68A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68A-M3/5B.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,850
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Product details
Overview
P6SMB68A-M3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in 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), 92.0 V maximum clamping voltage (VC) at 6.5 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs and ICs in industrial power supplies.
For engineers reviewing the P6SMB68A-M3/5B datasheet, P6SMB68A-M3/5B pinout, P6SMB68A-M3/5B application, or P6SMB68A-M3/5B equivalent, key selection criteria include unidirectional polarity, SMB package thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification status (not applicable to -M3/5B suffix), halogen-free RoHS compliance, and clamping performance under repetitive surge conditions.
Technical Context
This TVS diode operates as a voltage-clamping protection device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5 %) and low incremental surge resistance, enabling fast response (<1 ns) to ESD and lightning-induced transients.
The device is rated for 100 A non-repetitive forward surge current (IFSM) and supports continuous power dissipation of 5.0 W at TA = 50 °C on infinite heatsink. Junction temperature range spans −65 °C to +150 °C, with MSL Level 1 moisture sensitivity per J-STD-020 and peak reflow temperature up to 260 °C.
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 reliable overvoltage triggering |
| 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, limiting stress on downstream ICs |
| PPPM | 600 W with 10/1000 µs waveform - standardized surge energy handling capacity for industrial immunity testing |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, critical for derating in enclosed PCB layouts |
| IFSM | 100 A at 8.3 ms half-sine - surge withstand capability for inductive load switching events |
| TJ max. | +150 °C - maximum junction temperature supporting operation in high-ambient industrial environments |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side of protected line; defines unidirectional conduction path |
| Cathode | Avalanche conduction terminal / Clamping node | Banded end; sinks transient current to ground or rail during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) without derating |
| Glass passivated junction | Ensures long-term VBR stability and low parameter drift across temperature and lifetime |
| Low profile SMB package | 0.220" × 0.130" footprint supports high-density PCB layouts and automated SMT assembly |
| MSL Level 1 rating | Allows direct placement without baking; compatible with standard lead-free reflow profiles up to 260 °C peak |
| Halogen-free & RoHS-compliant (-M3 suffix) | Fulfills environmental compliance requirements for industrial and consumer end equipment |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Protecting 48 V DC input rails in programmable logic controllers (PLCs) against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient spikes before they reach DC-DC controller ICs and gate drivers. Use Value: Limits clamped voltage to 92.0 V, preventing damage to 100 V-rated MOSFETs and maintaining system uptime during factory floor surges. |
Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins in BCMs exposed to battery voltage transients. IC Role / Device Role / Timing Role: Standby-mode reverse-biased protection element absorbing ISO 7637-2 Pulse 1 and Pulse 2b events. Use Value: Delivers sub-1 ns response and <1 µA leakage at 58.1 V, preserving sleep current budget while meeting automotive EMC requirements. |
| Telecom AC/DC Adapter Input Stage | Consumer Appliance Motor Drive Board |
|
Use Scenario: Suppressing differential-mode surges on primary-side rectifier outputs in universal-input offline adapters. IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk capacitor to clamp flyback transformer leakage spikes and lightning-induced surges. Use Value: Withstands 600 W pulses at 10/1000 µs and maintains VC ≤ 92.0 V, ensuring compliance with UL 62368-1 surge immunity. |
Use Scenario: Shielding H-bridge gate driver inputs from back-EMF transients generated by brushed DC motors in washing machines. IC Role / Device Role / Timing Role: Localized clamping device placed adjacent to driver IC supply pins to prevent latch-up or overvoltage shutdown. Use Value: 100 A IFSM rating handles repeated motor stall events; 5.0 W steady-state dissipation supports continuous thermal management. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ68A-T | Same SMB package, identical VBR (64.6–71.4 V), but rated for 600 W with tighter VC = 90.0 V at 6.7 A; RoHS-compliant but not halogen-free | Preferred where lower clamping voltage is prioritized over halogen-free compliance; suitable for commercial-grade telecom equipment | Select SMBJ68A-T if clamping margin is critical and halogen content is unrestricted |
| 1.5SMC68A | Larger SMC (DO-214AB) package; same electrical specs but higher RθJA (75 °C/W); 1.5 kW peak power rating | Better thermal performance in high-power surge scenarios; requires larger PCB area and different pad layout | Choose 1.5SMC68A only when board space allows and higher surge repetition rate demands improved heat dissipation |
Compared with SMBJ68A-T, P6SMB68A-M3/5B offers halogen-free construction and identical clamping performance at slightly higher VC; versus 1.5SMC68A, it trades thermal headroom for compactness and automated placement compatibility - making it optimal for space-constrained industrial SMPS designs.
Availability
P6SMB68A-M3/5B is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, telecom adapters, and consumer appliance motor drives requiring stable component supply, halogen-free compliance, and repeatable surge immunity performance.
Supply support for P6SMB68A-M3/5B 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, and protection devices with emphasis on reliability, precision, and application-specific optimization.
The P6SMB Series targets cost-sensitive, high-volume transient protection needs in industrial, automotive, and consumer systems - delivering standardized 600 W surge capability in compact SMB packages with consistent AEC-Q101 options.
FAQ
What is the breakdown voltage tolerance of P6SMB68A-M3/5B?
The P6SMB68A-M3/5B has a breakdown voltage (VBR) range of 64.6 V to 71.4 V at 1.0 mA test current, corresponding to a ±5 % tolerance around the nominal 68 V rating. This tight tolerance ensures predictable clamping behavior across production lots and supports deterministic circuit design without over-engineering margins.
Is P6SMB68A-M3/5B suitable for automotive applications?
P6SMB68A-M3/5B is halogen-free and RoHS-compliant but not AEC-Q101 qualified; the automotive-grade variant is P6SMB68AHM3_B/I. For non-safety-critical automotive subsystems like infotainment power rails, P6SMB68A-M3/5B may be used with customer validation, but full qualification requires the HM3_B or HM3_I suffix versions explicitly tested to AEC-Q101.
What is the maximum clamping voltage of P6SMB68A-M3/5B under surge conditions?
The maximum clamping voltage (VC) of P6SMB68A-M3/5B is 92.0 V at 6.5 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during standardized surge events and is measured per JEDEC standards using specified test fixtures.
Does P6SMB68A-M3/5B have bidirectional capability?
No, P6SMB68A-M3/5B is a unidirectional TVS diode - its cathode band indicates polarity, and it conducts only in reverse bias during overvoltage events. For bidirectional protection, the equivalent part is P6SMB68CA-M3/5B, which suppresses transients in both directions and carries no polarity marking.
What is the thermal resistance of P6SMB68A-M3/5B and how does it affect layout?
P6SMB68A-M3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads. To maintain safe junction temperatures under sustained power dissipation, designers must allocate adequate copper area and avoid enclosing the device in thermally restrictive enclosures - especially above 50 °C ambient.
P6SMB68A-M3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Box (TB)
- 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 (SMBJ)
P6SMB68A-M3/5B FAQ
1.How can I place an order for P6SMB68A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68A-M3/5B 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-M3/5B reliable?
The price and inventory of P6SMB68A-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB68A-M3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB68A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68A-M3/5B?
P6SMB68A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68A-M3/5B 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-M3/5B?
For technical support, including P6SMB68A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68A-M3/5B requirements.
6.How does Aetrix verify that P6SMB68A-M3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB68A-M3/5B 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-M3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB68A-M3/5B?
All P6SMB68A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68A-M3/5B, 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-M3/5B part is unused and in its original packaging.
Return procedure for P6SMB68A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB68A-M3/5B Tags
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