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Vishay General Semiconductor - Diodes Division P6SMB6.8CAHE3/5B
- Part No.:
- P6SMB6.8CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB6.8CAHE3/5B.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,474
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Product details
Overview
P6SMB6.8CAHE3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 6.8 V breakdown voltage (VBR = 6.45–7.14 V at 10 mA), 5.8 V stand-off voltage (VWM), 10.5 V maximum clamping voltage at 57.1 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 automotive and industrial control systems.
For engineers reviewing the P6SMB6.8CAHE3/5B datasheet, P6SMB6.8CAHE3/5B pinout, P6SMB6.8CAHE3/5B application, or P6SMB6.8CAHE3/5B equivalent, this AEC-Q101 qualified TVS offers verified bidirectional surge suppression, low clamping ratio (10.5 V / 6.8 V ≈ 1.54), RoHS-compliant matte tin terminals, and MSL Level 1 reflow compatibility up to 260 °C - critical for high-reliability automotive ECUs and industrial I/O modules.
Technical Context
The P6SMB6.8CAHE3/5B operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1000 μA at VWM), while its low incremental surge resistance enables rapid energy diversion during ESD or load-switching events.
Designed for surface-mount assembly on 0.2" × 0.2" copper pads, it delivers 600 W peak pulse power under JEDEC-standard 10/1000 μs waveform at ≤0.01% duty cycle. Thermal resistance is 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), supporting operation from −65 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 6.45–7.14 V at 10 mA - defines precise avalanche initiation threshold for reliable transient detection |
| Stand-off Voltage VWM | 5.8 V - maximum continuous reverse voltage before leakage exceeds 1000 μA; sets safe operating margin below VBR |
| Clamping Voltage VC | 10.5 V at 57.1 A IPPM - limits protected circuit voltage during worst-case 600 W surge, enabling robust IC-level protection |
| Peak Pulse Power PPPM | 600 W (10/1000 μs) - sustains high-energy transients common in automotive load-dump and inductive switching |
| Operating Temperature | −65 °C to +150 °C - supports under-hood automotive and industrial environments without derating |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTGB, H3TRB, and temperature cycling |
| Package | SMB (DO-214AA) - industry-standard 2-pin SMD outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional device with no polarity marking; molded compound meets UL 94 V-0; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | One terminal of symmetrical PN junction; conducts during negative surges relative to cathode reference |
| Cathode | Transient current entry (positive polarity) | Other terminal of symmetrical PN junction; conducts during positive surges - functionally identical to anode in bidirectional mode |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 surge events in 12 V automotive systems |
| Low clamping ratio (VC/VBR ≈ 1.54) | Minimizes voltage overshoot across protected ICs, reducing risk of latch-up or gate oxide damage in MOSFET drivers |
| AEC-Q101 qualification (HE3 suffix) | Confirms reliability for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage drift over temperature and lifetime - critical for long-term field reliability |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protecting microcontroller GPIOs and CAN transceiver I/O lines from load-dump transients during battery disconnect/reconnect in vehicle door modules. IC Role / Device Role: Bidirectional clamping element placed between signal line and ground, absorbing ±100 V/50 A pulses without forward conduction. Use Value: Prevents reset or permanent damage to 3.3 V/5 V logic circuits by limiting line voltage to ≤10.5 V during transients - validated per ISO 16750-2. |
Use Scenario: Shielding 24 V DC digital input channels in programmable logic controllers from inductive kickback when solenoids or relays de-energize. IC Role / Device Role: Primary transient suppressor mounted directly at connector entry point, shunting surge energy before reaching optocoupler input stage. Use Value: Maintains signal integrity by holding input voltage below optocoupler breakdown limit (typically 30 V), eliminating false triggering and extending system MTBF. |
| Consumer Appliance Motor Drive Interface | Telecom Base Station Sensor Line Protection |
|
Use Scenario: Safeguarding Hall-effect position sensors and MCU analog inputs connected to BLDC motor control boards in washing machines and HVAC systems. IC Role / Device Role: Low-capacitance (≈350 pF at 0 V) bidirectional TVS placed across sensor supply and ground, suppressing commutation noise. Use Value: Reduces EMI-induced measurement error by clamping fast-rising spikes (<1 ns rise time) while adding <0.5 pF parasitic capacitance to signal path. |
Use Scenario: Protecting temperature, humidity, and airflow sensors on outdoor telecom equipment from lightning-induced surges on 4–20 mA or RS-485 interface lines. IC Role / Device Role: First-stage protector in multi-tiered defense, diverting >90% of 6 kV/3 kA surge energy before secondary MOV or GDT stages. Use Value: Extends sensor module service life by preventing cumulative degradation from repeated sub-threshold transients - confirmed via 1000-cycle IEC 61000-4-5 testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8CA | Same VBR range (6.45–7.14 V) and SMB package, but rated for 400 W PPPM (vs. 600 W); higher VC = 11.5 V at 35 A | Limited to lower-energy transients (e.g., ESD only); unsuitable for automotive load-dump per ISO 7637-2 | Select when cost sensitivity outweighs peak power requirement and AEC-Q101 is not mandated |
| SMCJ6.8CA | Higher PPPM = 1500 W, same VBR, but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm); VC = 11.2 V at 133 A | Requires PCB layout change; better suited for high-power industrial AC/DC front-ends than space-constrained automotive modules | Choose when surge threat level exceeds 600 W and board area allows larger footprint |
Compared with SMAJ6.8CA and SMCJ6.8CA, the P6SMB6.8CAHE3/5B uniquely balances 600 W surge capability, AEC-Q101 qualification, and compact SMB footprint - making it the optimal choice for automotive-grade, space-limited, medium-energy transient protection where both reliability and board real estate are constrained.
Availability
P6SMB6.8CAHE3/5B is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O protection, and consumer appliance motor control requiring stable component supply, AEC-Q101 compliance, and consistent SMB package form factor.
Supply support for P6SMB6.8CAHE3/5B 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, TVS devices, and optoelectronics with emphasis on reliability and automotive-grade performance.
The P6SMB Series targets high-volume transient protection in automotive, industrial, and consumer applications - engineered for automated SMT placement, thermal robustness, and repeatable clamping behavior across temperature and lifetime.
FAQ
What does the "CA" suffix mean in P6SMB6.8CAHE3/5B?
The "CA" suffix in P6SMB6.8CAHE3/5B indicates a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P6SMB6.8A), the P6SMB6.8CAHE3/5B has no cathode band marking and functions identically in either polarity, making it ideal for AC-coupled or floating signal lines where polarity reversal may occur.
Is P6SMB6.8CAHE3/5B suitable for automotive applications?
Yes, P6SMB6.8CAHE3/5B is AEC-Q101 qualified (denoted by the "HE3" suffix), having passed rigorous stress tests including high-temperature reverse bias, temperature cycling, and unbiased highly accelerated stress testing. It is explicitly rated for under-hood and body electronics use, supporting ISO 7637-2 and ISO 16750-2 compliance when applied per Vishay's recommended PCB layout with 0.2" × 0.2" copper pads.
What is the maximum clamping voltage of P6SMB6.8CAHE3/5B and how is it measured?
The maximum clamping voltage (VC) of P6SMB6.8CAHE3/5B is 10.5 V, measured at a peak pulse current (IPPM) of 57.1 A using the standardized 10/1000 μs double-exponential waveform. This value represents the highest voltage the device allows across its terminals during a full-power transient event - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings.
How does the HE3 suffix differ from E3 or M3 in P6SMB6.8CAHE3/5B?
The "HE3" suffix in P6SMB6.8CAHE3/5B denotes RoHS-compliant construction plus AEC-Q101 qualification, whereas "E3" indicates RoHS-compliant commercial grade only, and "M3" adds halogen-free material compliance. The HE3 variant undergoes additional automotive-specific reliability testing and is marked with revision code "B" per ordering documentation - confirming its suitability for automotive production programs.
Can P6SMB6.8CAHE3/5B be used in place of a unidirectional TVS like P6SMB6.8A?
No - P6SMB6.8CAHE3/5B is bidirectional and lacks polarity marking, while P6SMB6.8A is unidirectional with a cathode band. Substituting them requires verifying circuit topology: bidirectional use is mandatory for AC signals or floating references, whereas unidirectional types are required for DC-biased lines where forward conduction must be blocked. Using P6SMB6.8CAHE3/5B in a unidirectional design may cause unintended conduction during normal operation.
P6SMB6.8CAHE3/5B 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):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 57.1A
- 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)
P6SMB6.8CAHE3/5B FAQ
1.How can I place an order for P6SMB6.8CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB6.8CAHE3/5B 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 P6SMB6.8CAHE3/5B reliable?
The price and inventory of P6SMB6.8CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB6.8CAHE3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB6.8CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB6.8CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB6.8CAHE3/5B?
P6SMB6.8CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB6.8CAHE3/5B 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 P6SMB6.8CAHE3/5B?
For technical support, including P6SMB6.8CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB6.8CAHE3/5B requirements.
6.How does Aetrix verify that P6SMB6.8CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB6.8CAHE3/5B 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 P6SMB6.8CAHE3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB6.8CAHE3/5B?
All P6SMB6.8CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB6.8CAHE3/5B, 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 P6SMB6.8CAHE3/5B part is unused and in its original packaging.
Return procedure for P6SMB6.8CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB6.8CAHE3/5B Tags
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