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Vishay General Semiconductor - Diodes Division P6SMB6.8CAHM3/H
- Part No.:
- P6SMB6.8CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB6.8CAHM3/H.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,442
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Product details
Overview
P6SMB6.8CAHM3/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), 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 P6SMB6.8CAHM3/H datasheet, P6SMB6.8CAHM3/H pinout, P6SMB6.8CAHM3/H application, or P6SMB6.8CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, low clamping ratio (VC/VWM ≈ 1.81), and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche behavior in both polarities, enabling robust suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1000 µA at VWM), while MSL Level 1 moisture sensitivity supports lead-free reflow up to 260 °C peak.
The P6SMB6.8CAHM3/H delivers 600 W peak pulse power under standardized 10/1000 µs surge conditions, with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W - indicating effective heat transfer to PCB copper pads (0.2" × 0.2") and suitability for high-reliability applications requiring repetitive transient immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA test current - defines precise avalanche onset window for predictable clamping threshold |
| VWM | 5.8 V - maximum continuous reverse voltage before significant leakage; sets safe operating margin below breakdown |
| VC @ IPPM | 10.5 V at 57.1 A - clamping voltage during 600 W surge; determines protected circuit's worst-case overvoltage exposure |
| PPPM | 600 W - peak pulse power handling with 10/1000 µs waveform; validates protection against IEC 61000-4-5 Level 4 surges |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive and industrial environments |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.220" × 0.130" footprint and matte tin-plated leads |
| AEC-Q101 | Qualified - certified for automotive electronics per stress test requirements including HTOL, TC, and ESD |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts bidirectionally when voltage exceeds ±VBR, eliminating orientation concerns during placement |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without external polarity management |
| 600 W peak pulse power | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive subsystems |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain, body electronics, and ADAS modules requiring long-term reliability |
| Halogen-free & RoHS-compliant | Complies with EU Directive 2011/65/EU and IPC-1752A material declaration standards |
| MSL Level 1, 260 °C peak | Supports standard lead-free reflow profiles without baking or special handling |
Applications
| Automotive Sensor Interface Protection | Industrial PLC I/O Module Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., temperature, pressure) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector entry point to shunt surge energy before reaching signal conditioning ICs. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and ADC front-ends by limiting transient voltage to ≤10.5 V during 57.1 A events. |
Use Scenario: Safeguarding digital input/output channels of programmable logic controllers against field-wiring induced surges and ground bounce. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC I/O lines, coordinated with series impedance to limit let-through current. Use Value: Maintains functional safety integrity by ensuring controller uptime during repetitive 600 W transients common in factory automation environments. |
| Consumer Appliance Motor Drive Protection | Telecom Power Supply Input Protection |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals or H-bridge outputs to absorb inductive kickback energy. Use Value: Extends MOSFET lifetime by clamping voltage to 10.5 V, well below 30 V drain-source rating of common logic-level switches. |
Use Scenario: Secondary-stage transient suppression on 48 V telecom rectifier outputs feeding base station RF modules. IC Role / Device Role / Timing Role: Final-line defense after primary MOV/GDT stages, providing fast-response clamping for residual fast-rising edges. Use Value: Reduces risk of RF IC failure by limiting sub-microsecond transients to <11 V, preserving signal integrity in sensitive analog front-ends. |
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/VC specs but lower PPPM = 400 W; SMA package (smaller footprint, higher RθJA) | Limited to lower-energy surges (IEC 61000-4-5 Level 3); unsuitable for automotive load-dump scenarios | Select when board space is constrained and surge threat level is moderate (e.g., consumer USB ports) |
| 1.5KE6.8CA | Higher PPPM = 1500 W but axial DO-201 package; slower response due to higher parasitic inductance | Requires through-hole mounting; not compatible with automated SMT lines or dense PCB layouts | Choose only for legacy designs where through-hole assembly remains in use and higher surge margin is mandatory |
Compared with SMAJ6.8CA and 1.5KE6.8CA, the P6SMB6.8CAHM3/H uniquely balances 600 W surge capacity, AEC-Q101 qualification, SMB surface-mount compatibility, and bidirectional symmetry - making it optimal for new automotive and industrial SMT designs requiring validated reliability and production scalability.
Availability
P6SMB6.8CAHM3/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O protection, and telecom power supply hardening requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P6SMB6.8CAHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on high-reliability and automotive-grade solutions.
The P6SMB Series is engineered for robust transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, consistent clamping performance, and SMT manufacturability are critical.
FAQ
What does the "HM3" suffix indicate in P6SMB6.8CAHM3/H?
The HM3 suffix in P6SMB6.8CAHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It confirms compliance with automotive reliability standards including high-temperature operating life, temperature cycling, and electrostatic discharge testing - essential for deployment in engine control units and ADAS modules where long-term stability is mandated.
Is P6SMB6.8CAHM3/H unidirectional or bidirectional?
P6SMB6.8CAHM3/H is a bidirectional TVS diode, as confirmed by the "CA" suffix and absence of cathode band marking. It provides symmetrical clamping for both positive and negative transients, making it ideal for protecting AC-coupled data lines, differential interfaces, or floating power rails without polarity constraints during PCB layout or assembly.
What is the maximum clamping voltage of P6SMB6.8CAHM3/H under surge conditions?
The maximum clamping voltage of P6SMB6.8CAHM3/H is 10.5 V at 57.1 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during worst-case surge events - critical for ensuring compatibility with 3.3 V or 5 V logic interfaces downstream.
Can P6SMB6.8CAHM3/H replace P6SMB6.8A in existing designs?
No - P6SMB6.8CAHM3/H is bidirectional while P6SMB6.8A is unidirectional. Substituting them requires verifying circuit polarity, checking for cathode orientation dependencies, and validating that clamping behavior remains appropriate for both voltage polarities. The "CA" vs. "A" suffix difference reflects fundamental device architecture, not just packaging or qualification.
What PCB pad layout is recommended for P6SMB6.8CAHM3/H?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area per terminal for P6SMB6.8CAHM3/H to achieve rated 600 W pulse power and thermal performance. This layout ensures adequate heat dissipation and surge current handling; deviating reduces IPPM derating and may compromise clamping consistency under repetitive transients.
P6SMB6.8CAHM3/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:
- 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:
- 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)
P6SMB6.8CAHM3/H FAQ
1.How can I place an order for P6SMB6.8CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB6.8CAHM3/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 P6SMB6.8CAHM3/H reliable?
The price and inventory of P6SMB6.8CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB6.8CAHM3/H is usually 5 days.
3.What payment methods are accepted for P6SMB6.8CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB6.8CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB6.8CAHM3/H?
P6SMB6.8CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB6.8CAHM3/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 P6SMB6.8CAHM3/H?
For technical support, including P6SMB6.8CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB6.8CAHM3/H requirements.
6.How does Aetrix verify that P6SMB6.8CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB6.8CAHM3/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 P6SMB6.8CAHM3/H meets industry standards.
7.What is the process for return or replacement of P6SMB6.8CAHM3/H?
All P6SMB6.8CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB6.8CAHM3/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 P6SMB6.8CAHM3/H part is unused and in its original packaging.
Return procedure for P6SMB6.8CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB6.8CAHM3/H Tags
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