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Vishay General Semiconductor - Diodes Division P6SMB68CAHE3_B/H
- Part No.:
- P6SMB68CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68CAHE3_B/H.pdf
- Description:
- 600W,68V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,274
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Product details
Overview
P6SMB68CAHE3_B/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal or power 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), with 600 W peak pulse power rating per 10/1000 μs waveform - used to protect automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the P6SMB68CAHE3_B/H datasheet, P6SMB68CAHE3_B/H pinout, P6SMB68CAHE3_B/H application, or P6SMB68CAHE3_B/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMB (DO-214AA) package compatibility, and thermal resistance (RθJA = 100 °C/W) for board-level surge protection design.
Technical Context
This device operates as a voltage-clamping protector with symmetrical bidirectional avalanche behavior - no polarity marking required. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while meeting MSL Level 1 moisture sensitivity and JESD201 Class 2 whisker resistance.
The P6SMB68CAHE3_B/H delivers 600 W transient suppression under standardized 10/1000 μs pulses at ≤0.01% duty cycle, with fast response time (<1.0 ns) and low incremental surge resistance - enabling robust protection of downstream MOSFETs, microcontrollers, and analog front-ends against ESD, lightning-induced surges, and inductive switching spikes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 64.6–71.4 V at 1.0 mA test current - defines precise clamping onset threshold in both directions |
| Stand-off Voltage VWM | 58.1 V - maximum continuous reverse voltage before significant leakage begins |
| Clamping Voltage VC | 92.0 V at 6.5 A IPPM - actual voltage seen by protected circuit during worst-case surge |
| Peak Pulse Power PPPM | 600 W (10/1000 μs waveform) - determines energy-handling capacity for transient events |
| Package | SMB (DO-214AA) - surface-mount footprint with 0.205" × 0.220" pad layout, UL 94 V-0 rated molding |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HAST, and mechanical shock |
| Thermal Resistance RθJA | 100 °C/W - defines junction-to-ambient temperature rise under steady-state 5.0 W dissipation |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | Either terminal serves as anode or cathode depending on transient polarity - no DC bias dependency |
| Case / Body | Non-electrical mechanical interface | UL 94 V-0 compliant epoxy body; provides mechanical anchoring and thermal path to PCB copper pads |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables single-device protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth) without cascading devices |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive powertrain and chassis modules requiring extended temperature (-65 °C to +150 °C) and lifetime reliability |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes overvoltage stress on protected ICs - critical for 3.3 V or 5 V logic interfacing with 12 V/24 V systems |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without pre-baking or special handling |
| Glass-passivated junction | Ensures stable VBR tolerance (±5%) and low leakage (<1 μA) across temperature and lifetime |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground, responding within <1 ns to suppress transients above 58.1 V. Use Value: Prevents latch-up or permanent damage to automotive-grade MCUs and signal conditioners during battery disconnect events. |
Use Scenario: Shielding 24 V digital input channels on programmable logic controllers from field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-mode TVS connected across input terminals, conducting only during >58.1 V transients to shunt current away from optocoupler inputs. Use Value: Eliminates need for external series resistors or RC snubbers while maintaining IEC 61000-4-4 level 3 immunity (2 kV). |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Control Board |
|
Use Scenario: Safeguarding Ethernet PHY interfaces and RS-485 transceivers on telecom access equipment exposed to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Bidirectional clamping element placed differential-to-ground, leveraging symmetrical VBR to handle ±68 V transients equally. Use Value: Achieves GR-1089-CORE compliance for secondary lightning protection without degrading signal integrity at 100 Mbps. |
Use Scenario: Protecting microcontroller GPIOs and gate drivers on washing machine motor control boards from brush-commutator noise and pump startup spikes. IC Role / Device Role / Timing Role: Low-capacitance (typ. 100 pF at 0 V) TVS mounted directly at connector entry point to intercept fast-rising edges. Use Value: Reduces EMI-induced resets and false triggering in cost-sensitive white goods without adding filtering delay. |
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 = 140 °C/W) | Limited to lower-energy transients; unsuitable for automotive load dump per ISO 16750-2 | Select when board space is constrained and surge energy does not exceed 400 W capability. |
| SMCJ68CAHE3_A/H | Higher PPPM (1500 W), same VBR, larger SMC package (DO-214AB); identical AEC-Q101 qualification | Overqualified for most 600 W use cases; requires larger PCB area and higher mounting pad thermal mass | Choose only when system-level testing reveals margin shortfall with P6SMB68CAHE3_B/H under repetitive surge conditions. |
Compared with SMAJ68CA-E3/5B and SMCJ68CAHE3_A/H, the P6SMB68CAHE3_B/H offers optimal balance of 600 W surge capability, AEC-Q101 compliance, and SMB footprint - making it the preferred choice for space-constrained automotive and industrial control designs requiring validated reliability without over-engineering.
Availability
P6SMB68CAHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC input stages, telecom line cards, and consumer appliance motor controllers requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB68CAHE3_B/H 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, TVS devices, and power MOSFETs with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB series was developed for high-reliability surface-mount transient suppression in automotive, industrial, and telecom environments - prioritizing AEC-Q101 qualification, tight VBR tolerance, and consistent clamping performance across temperature.
FAQ
What is the clamping voltage of P6SMB68CAHE3_B/H at its rated peak pulse current?
The P6SMB68CAHE3_B/H has a maximum clamping voltage (VC) of 92.0 V at 6.5 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value represents the highest voltage that will appear across the device during a worst-case transient event, directly limiting overvoltage stress on downstream components. The P6SMB68CAHE3_B/H maintains this clamping performance across its operating junction temperature range of -65 °C to +150 °C.
Is P6SMB68CAHE3_B/H suitable for automotive applications?
Yes, P6SMB68CAHE3_B/H is AEC-Q101 qualified and specifically designed for automotive use - confirmed by its HE3 suffix and documentation stating "AEC-Q101 qualified available" with automotive ordering code base P/NHE3. It meets requirements for temperature cycling, humidity testing, and mechanical shock relevant to engine control units, body electronics, and ADAS sensor modules. The P6SMB68CAHE3_B/H is rated for operation from -65 °C to +150 °C and supports load dump immunity per ISO 16750-2 when applied with appropriate PCB layout.
What does the "CA" suffix indicate in P6SMB68CAHE3_B/H?
The "CA" suffix in P6SMB68CAHE3_B/H denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage suppression in both polarities, with no cathode marking required. This distinguishes it from unidirectional variants (e.g., P6SMB68A), which have a marked cathode band and conduct only in reverse bias. The P6SMB68CAHE3_B/H is therefore ideal for protecting AC-coupled signals, differential buses like RS-485, or any application where voltage polarity reversal may occur during transients.
What is the thermal resistance of P6SMB68CAHE3_B/H, and how does it affect layout?
The P6SMB68CAHE3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard FR-4 PCB construction without internal copper planes. To maintain safe junction temperatures under sustained 5.0 W power dissipation, designers must ensure adequate copper area and avoid thermal bottlenecks - the P6SMB68CAHE3_B/H's SMB package relies heavily on PCB copper for heat spreading, not case conduction.
How does P6SMB68CAHE3_B/H compare to unidirectional P6SMB68A in terms of electrical performance?
The P6SMB68CAHE3_B/H and unidirectional P6SMB68A share identical breakdown voltage (64.6–71.4 V), stand-off voltage (58.1 V), and clamping voltage (92.0 V) specifications - but differ fundamentally in polarity behavior. The P6SMB68CAHE3_B/H conducts during both positive and negative transients, while P6SMB68A only clamps in reverse bias and blocks forward current. This makes the P6SMB68CAHE3_B/H suitable for AC signal lines or floating grounds, whereas P6SMB68A is reserved for DC-biased rails where forward conduction must be avoided.
P6SMB68CAHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- 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)
P6SMB68CAHE3_B/H FAQ
1.How can I place an order for P6SMB68CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68CAHE3_B/H 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_B/H reliable?
The price and inventory of P6SMB68CAHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB68CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB68CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68CAHE3_B/H?
P6SMB68CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68CAHE3_B/H 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_B/H?
For technical support, including P6SMB68CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68CAHE3_B/H requirements.
6.How does Aetrix verify that P6SMB68CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB68CAHE3_B/H 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_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB68CAHE3_B/H?
All P6SMB68CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68CAHE3_B/H, 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_B/H part is unused and in its original packaging.
Return procedure for P6SMB68CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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