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Vishay General Semiconductor - Diodes Division P6SMB6.8CAHE3_A/H
- Part No.:
- P6SMB6.8CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB6.8CAHE3_A/H.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,214
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Product details
Overview
P6SMB6.8CAHE3_A/H 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 min = 6.45 V), 5.8 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 µs), 10.5 V maximum clamping voltage at 57.1 A IPPM, and AEC-Q101 qualification for automotive use.
For engineers reviewing the P6SMB6.8CAHE3_A/H datasheet, P6SMB6.8CAHE3_A/H pinout, P6SMB6.8CAHE3_A/H application, or P6SMB6.8CAHE3_A/H equivalent, key selection considerations include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.64), MSL Level 1 moisture sensitivity, RoHS-compliant matte tin plating, and suitability for I/O protection in automotive ECUs and industrial sensor interfaces.
Technical Context
This device 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 the SMB package enables automated placement and meets UL 94 V-0 flammability rating.
It delivers 600 W peak pulse power under standardized 10/1000 µs waveform with 0.01% duty cycle, and exhibits fast response time (<1.0 ns) and low incremental surge resistance - critical for protecting sensitive MOSFET gates and microcontroller I/O pins against ESD and load-switching spikes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min) | 6.45 V - Ensures reliable conduction onset above normal operating voltage to avoid false triggering |
| VWM | 5.8 V - Maximum continuous reverse working voltage before significant leakage begins |
| VC @ IPPM | 10.5 V - Clamped voltage during 57.1 A transient, limiting stress on downstream ICs |
| IPPM | 57.1 A - Peak surge current handled under 10/1000 µs waveform without failure |
| PPPM | 600 W - Transient energy absorption capacity compatible with IEC 61000-4-5 Level 4 |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and industrial enclosures |
| Package | SMB (DO-214AA) - Standardized surface-mount footprint with 5.0 mm × 5.0 mm copper pad thermal relief |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are symmetrical; device functions identically in either orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Conducts during negative-going transients; connects to protected line or ground reference |
| Cathode | Transient current entry (positive polarity) | Conducts during positive-going transients; connects to protected line or ground reference |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow without preconditioning or baking requirements |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage drift over temperature and lifetime |
| RoHS-compliant matte tin plating | Meets J-STD-002 solderability and JESD22-B102 whisker resistance Class 2 standards |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Line Protection |
|---|---|
|
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 TVS clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤10.5 V during 57.1 A surges, preventing ADC saturation and latch-up in 3.3 V/5 V systems. |
Use Scenario: Safeguarding CAN_H/CAN_L differential pair against ESD (IEC 61000-4-2 ±8 kV) and burst noise in factory automation nodes. IC Role / Device Role / Timing Role: Dual-channel TVS placed across CAN bus lines, referenced to common ground. Use Value: Maintains signal integrity by clamping transients below 12 V while adding <1 pF capacitance per line at 0 V bias. |
| Consumer USB Port ESD Protection | Power Supply Input Surge Suppression |
|
Use Scenario: Shielding USB 2.0 D+/D− lines in portable medical devices from human-body-model ESD events. IC Role / Device Role / Timing Role: Bidirectional TVS mounted directly at USB connector, before ESD filter or transceiver. Use Value: Responds in <1 ns to divert >8 kV contact discharge energy away from USB PHY, preserving data integrity. |
Use Scenario: Suppressing 10/1000 µs lightning-induced surges on 5–12 V DC input rails of industrial PLC power supplies. IC Role / Device Role / Timing Role: Primary-stage TVS placed after fuse and before bulk capacitor and regulator. Use Value: Absorbs up to 600 W transient power without degradation, enabling compliance with IEC 61000-4-5 Level 3. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8CA | Same VBR/VC, but lower PPPM = 400 W; SMA package (smaller thermal mass) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 | Select when board space is constrained and surge energy is ≤400 W |
| 1.5KE6.8CA | Higher PPPM = 1500 W, axial-leaded DO-201 package; slower thermal response | Requires through-hole mounting; not suitable for high-density SMT designs | Choose for legacy through-hole boards or higher-energy industrial surge zones |
Compared with SMAJ6.8CA and 1.5KE6.8CA, P6SMB6.8CAHE3_A/H offers optimal balance of 600 W surge handling, SMB footprint compatibility, AEC-Q101 qualification, and automated assembly readiness - making it preferred for new automotive and industrial SMT designs requiring validated reliability.
Availability
P6SMB6.8CAHE3_A/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and consumer USB port hardening requiring stable component supply and AEC-Q101 traceability.
Supply support for P6SMB6.8CAHE3_A/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, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The P6SMB Series targets robust transient suppression in space-constrained, high-reliability applications - particularly automotive subsystems, industrial controls, and communication interfaces where bidirectional clamping and AEC-Q101 validation are mandatory.
FAQ
What does the "CA" suffix indicate in P6SMB6.8CAHE3_A/H?
The "CA" suffix denotes a bidirectional configuration: P6SMB6.8CAHE3_A/H clamps voltage transients equally in both polarities, with no cathode band marking. This distinguishes it from unidirectional variants (e.g., P6SMB6.8AHE3_A/H) and makes it ideal for AC-coupled or floating signal lines where polarity reversal may occur. The device's symmetric VBR and VC values confirm true bidirectional behavior.
Is P6SMB6.8CAHE3_A/H suitable for automotive applications?
Yes, P6SMB6.8CAHE3_A/H is AEC-Q101 qualified (as indicated by the "HE3" suffix and "_B" revision code), tested for temperature cycling, humidity bias, and mechanical shock per automotive reliability standards. It is explicitly rated for under-hood and body-control module use, with guaranteed operation from –65 °C to +150 °C and MSL Level 1 reflow compatibility - all confirmed in Vishay document 88370.
What is the clamping ratio of P6SMB6.8CAHE3_A/H, and why does it matter?
P6SMB6.8CAHE3_A/H has a clamping ratio of ~1.64 (VC/VBR = 10.5 V / 6.45 V), indicating efficient voltage limiting during transients. A lower ratio means less overvoltage stress on protected ICs - critical for safeguarding 3.3 V or 5 V logic. This ratio is measured at IPPM = 57.1 A and remains stable due to the device's low incremental surge resistance, as verified in the P6SMB series datasheet.
How does the SMB package of P6SMB6.8CAHE3_A/H compare thermally to larger packages?
The SMB (DO-214AA) package of P6SMB6.8CAHE3_A/H has a typical RθJA of 100 °C/W and RθJL of 20 °C/W. When mounted on 5.0 mm × 5.0 mm copper pads per terminal, it sustains 600 W peak pulses without exceeding TJ = 150 °C. While larger packages offer lower thermal resistance, the SMB footprint provides optimal trade-off between surge capability, PCB area, and automated assembly yield - validated in Vishay's thermal derating curves (Fig. 2).
Can P6SMB6.8CAHE3_A/H replace older P6SMB6.8CA parts in existing designs?
Yes, P6SMB6.8CAHE3_A/H is a direct replacement for prior P6SMB6.8CA variants with E3/M3/HE3 suffixes, maintaining identical electrical specs, SMB package dimensions, and pinout. The "_A/H" ordering code specifies 7″ tape-and-reel packaging (750 units/reel) and AEC-Q101 qualification - no layout or schematic changes are required when upgrading from non-HE3 versions, provided the design already accommodates the SMB footprint and thermal pad layout.
P6SMB6.8CAHE3_A/H 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:
- Obsolete
- 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_A/H FAQ
1.How can I place an order for P6SMB6.8CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB6.8CAHE3_A/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 P6SMB6.8CAHE3_A/H reliable?
The price and inventory of P6SMB6.8CAHE3_A/H 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_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB6.8CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB6.8CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB6.8CAHE3_A/H?
P6SMB6.8CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB6.8CAHE3_A/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 P6SMB6.8CAHE3_A/H?
For technical support, including P6SMB6.8CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB6.8CAHE3_A/H requirements.
6.How does Aetrix verify that P6SMB6.8CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB6.8CAHE3_A/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 P6SMB6.8CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB6.8CAHE3_A/H?
All P6SMB6.8CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB6.8CAHE3_A/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 P6SMB6.8CAHE3_A/H part is unused and in its original packaging.
Return procedure for P6SMB6.8CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB6.8CAHE3_A/H Tags
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