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Vishay General Semiconductor - Diodes Division P6SMB68CAHE3/5B
- Part No.:
- P6SMB68CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68CAHE3/5B.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,709
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Product details
Overview
P6SMB68CAHE3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 68 V breakdown voltage (VBR min/max = 64.6–71.4 V at 1 mA), 58.1 V standoff voltage (VWM), and clamps to ≤92.0 V at 6.5 A peak pulse current (10/1000 μs waveform), delivering 600 W peak pulse power for surge protection in automotive and industrial electronics.
For engineers reviewing the P6SMB68CAHE3/5B datasheet, P6SMB68CAHE3/5B pinout, P6SMB68CAHE3/5B application, or P6SMB68CAHE3/5B equivalent, this device is selected for robust ESD and lightning surge immunity in bidirectional signal paths-especially where AEC-Q101 qualification, low clamping voltage, and MSL Level 1 reflow compatibility are required.
Technical Context
The P6SMB68CAHE3/5B operates as a bidirectional avalanche diode with symmetrical clamping behavior in both polarities, enabling protection of AC-coupled or differential interfaces without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while the 20 °C/W junction-to-lead thermal resistance supports reliable power dissipation under repetitive surge conditions.
Designed for automated SMT assembly, it meets J-STD-020 MSL Level 1 (peak reflow 260 °C) and JESD201 Class 2 whisker resistance. The device is AEC-Q101 qualified (indicated by HE3 suffix and revision B), confirming suitability for automotive under-hood and infotainment systems requiring validated reliability over temperature (-65 °C to +150 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1 mA - defines precise avalanche initiation window for repeatable clamping onset |
| VWM | 58.1 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | ≤92.0 V at 6.5 A (10/1000 μs) - actual clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 600 W - peak transient energy absorption capability under standardized surge waveform |
| ID @ VWM | ≤1.0 μA - ultra-low reverse leakage preserves signal integrity and minimizes standby power loss |
| TJ max | +150 °C - enables operation in high-temperature environments including engine control units |
| Package | SMB (DO-214AA) - industry-standard 2-pin surface-mount outline with 5.59 mm × 4.06 mm footprint |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002 and JESD22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (either polarity) | Accepts surge current during positive or negative voltage excursions; symmetric conduction path |
| Cathode | Transient current exit point (either polarity) | Completes bidirectional clamping loop; no fixed polarity-functions identically to Anode under reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including powertrain and ADAS subsystems per stress test requirements |
| 600 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) without degradation |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes overvoltage stress on downstream ICs such as CAN transceivers or sensor front-ends |
| MSL Level 1 moisture sensitivity | Enables standard reflow assembly without dry-pack or baking, reducing manufacturing cost and risk |
| Glass-passivated junction | Ensures long-term parameter stability and resistance to humidity-induced parameter drift |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail to limit transients to safe levels. Use Value: Prevents latch-up or permanent damage to precision ADC inputs by limiting excursion to ≤92.0 V during 600 W surges. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs subjected to ground bounce and EFT bursts. IC Role / Device Role / Timing Role: Common-mode transient suppressor across A/B bus lines referenced to ground, absorbing differential and common-mode noise. Use Value: Maintains data integrity by clamping fast-rising transients (<1 ns response) before they disrupt UART communication timing. |
| Consumer USB-C Port | Telecom DSL Line Interface |
Use Scenario: ESD and surge protection for USB-C CC and VCONN lines in portable docking stations. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed inline with high-speed auxiliary channels. Use Value: Provides ±15 kV contact / ±25 kV air IEC 61000-4-2 ESD immunity without signal distortion due to <10 pF junction capacitance. |
Use Scenario: Primary protection stage for ADSL/VDSL line drivers interfacing with outside plant wiring vulnerable to lightning induction. IC Role / Device Role / Timing Role: First-line surge absorber between transformer secondary and line driver IC, rated for ITU-T K.20/K.21 threats. Use Value: Absorbs up to 600 W of induced lightning energy (10/1000 μs) while holding clamped voltage below 92.0 V to protect sensitive PHY circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ68CA-E3/5B | Same VBR range (64.6–71.4 V) but lower PPPM = 400 W; SMA package (smaller footprint, higher RθJA) | Limited to lower-energy surges (IEC 61000-4-5 Level 2); unsuitable for automotive load dump | Select when board space is constrained and surge threat level is moderate (e.g., consumer peripherals) |
| 1.5KE68CA | Through-hole DO-201 package; identical electrical specs but higher thermal mass and manual assembly requirement | Used in legacy industrial power supplies where wave soldering is preferred and layout allows larger footprint | Choose for repairability, high-reliability through-hole designs, or where reflow profile compatibility is uncertain |
Compared with SMAJ68CA-E3/5B and 1.5KE68CA, the P6SMB68CAHE3/5B uniquely combines AEC-Q101 qualification, 600 W surge capacity, and SMB SMT compatibility-making it the optimal choice for new automotive and high-volume industrial designs requiring validated reliability and automated assembly.
Availability
P6SMB68CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor modules, industrial RS-485 networks, and telecom line interface circuits requiring stable component supply with full traceability and lifecycle management.
Supply support for P6SMB68CAHE3/5B 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and communications equipment-designed to replace older axial-leaded TVS devices with modern SMT form factors and AEC-Q101 validation.
FAQ
What is the clamping voltage of P6SMB68CAHE3/5B under a 10/1000 μs surge?
The P6SMB68CAHE3/5B clamps to a maximum of 92.0 V when subjected to its rated peak pulse current of 6.5 A using the standardized 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88370 and represents the upper bound of voltage seen by protected circuitry during worst-case transient events. The clamping performance is consistent across both polarities due to its bidirectional construction.
Is P6SMB68CAHE3/5B suitable for automotive applications?
Yes, P6SMB68CAHE3/5B is AEC-Q101 qualified (confirmed by the HE3 suffix and revision B designation), making it suitable for automotive applications including engine control units, body electronics, and ADAS sensors. Its operating junction temperature range of -65 °C to +150 °C, MSL Level 1 reflow compatibility, and validated surge performance meet stringent automotive reliability requirements.
How does the bidirectional design of P6SMB68CAHE3/5B affect PCB layout?
The bidirectional design of P6SMB68CAHE3/5B eliminates polarity concerns during placement-no cathode band marking is present, and either terminal may connect to either side of a differential line or AC-coupled signal path. This simplifies layout, reduces assembly errors, and enables symmetric placement across bus lines like RS-485 or CAN without orientation verification.
What is the standoff voltage (VWM) of P6SMB68CAHE3/5B, and why does it matter?
The standoff voltage VWM of P6SMB68CAHE3/5B is 58.1 V, representing the maximum continuous reverse voltage the device can block without exceeding 1.0 μA leakage current. This parameter ensures the TVS remains inactive during normal operation-critical for protecting 48 V automotive systems or 48 V DC-powered industrial equipment where false triggering must be avoided.
Does P6SMB68CAHE3/5B require derating at elevated ambient temperatures?
Yes, P6SMB68CAHE3/5B requires thermal derating above 25 °C ambient, as shown in Figure 2 of the Vishay datasheet. Its peak pulse power drops linearly with increasing junction temperature, reaching ~50 % of 600 W at 100 °C ambient (with standard PCB pad layout). Designers must apply the derating curve and ensure adequate copper area (0.2" × 0.2" pads per terminal) to maintain specified surge capability.
P6SMB68CAHE3/5B 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB68CAHE3/5B FAQ
1.How can I place an order for P6SMB68CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68CAHE3/5B 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 P6SMB68CAHE3/5B reliable?
The price and inventory of P6SMB68CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB68CAHE3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB68CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68CAHE3/5B?
P6SMB68CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68CAHE3/5B 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 P6SMB68CAHE3/5B?
For technical support, including P6SMB68CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68CAHE3/5B requirements.
6.How does Aetrix verify that P6SMB68CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB68CAHE3/5B 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 P6SMB68CAHE3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB68CAHE3/5B?
All P6SMB68CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68CAHE3/5B, 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 P6SMB68CAHE3/5B part is unused and in its original packaging.
Return procedure for P6SMB68CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB68CAHE3/5B Tags
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