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Vishay General Semiconductor - Diodes Division P6SMB8.2CA-M3/5B
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- Part No.:
- P6SMB8.2CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB8.2CA-M3/5B.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,035
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Product details
Overview
P6SMB8.2CA-M3/5B 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 8.2 V standoff voltage (VWM), 12.1 V maximum clamping voltage (VC) at 49.6 A peak pulse current (IPPM), and 600 W peak pulse power capability with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P6SMB8.2CA-M3/5B datasheet, P6SMB8.2CA-M3/5B pinout, P6SMB8.2CA-M3/5B application, or P6SMB8.2CA-M3/5B equivalent, key selection criteria include bidirectional clamping behavior, low clamping ratio (VC/VWM = 1.48), halogen-free RoHS compliance (M3 suffix), and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamped transient protector with symmetrical breakdown in both directions, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable avalanche characteristics and low leakage (<200 μA at VWM), while MSL Level 1 rating supports lead-free reflow up to 260 °C.
The P6SMB8.2CA-M3/5B delivers repeatable surge suppression under repetitive 0.01% duty cycle conditions, with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W ensuring predictable junction temperature rise during transient events. It is not a rectifier or switching diode - its sole function is transient energy diversion via controlled avalanche conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 7.02 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 7.79–8.61 V at 10 mA - Confirmed avalanche onset range; ensures reliable triggering within 10% tolerance band. |
| VC (Clamping Voltage) | 12.1 V at 49.6 A IPPM - Peak voltage seen by protected circuit during worst-case 10/1000 μs surge; critical for downstream IC voltage rating margin. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy handling per IEC 61000-4-5 compliant waveform; enables robust protection against lightning-induced surges. |
| ID (Reverse Leakage) | <200 μA at VWM - Minimal standby power loss and signal integrity impact in high-impedance circuits. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive or enclosed industrial enclosures. |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with IPC-7351B land patterns. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional device with no polarity marking - both terminals are electrically symmetric; mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per datasheet recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Electrically identical to Terminal 2; no functional distinction - either terminal connects to protected line or ground reference. |
| Terminal 2 | Anode / Cathode (bidirectional) | Matches Terminal 1; bidirectional symmetry eliminates layout polarity concerns and simplifies routing for differential or AC signals. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled interfaces (e.g., RS-485, CAN, audio lines) without external polarity management. |
| 600 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 Level 4 surge immunity requirements when properly laid out with recommended copper pads. |
| Halogen-free, RoHS-compliant (M3 suffix) | Complies with JEDEC J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance - suitable for high-reliability commercial and automotive production. |
| Low clamping ratio (VC/VWM = 1.48) | Minimizes overvoltage stress on protected ICs - e.g., ensures 3.3 V or 5 V logic interfaces remain within absolute maximum ratings during transients. |
| Fast response time (<1 ps) | Activates before most semiconductor damage mechanisms initiate, providing effective protection against ESD and fast-rising inductive spikes. |
Applications
| Industrial Sensor Interface Protection | Automotive Body Control Module (BCM) Inputs |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., temperature, pressure) from load-dump and inductive switching transients in factory automation PLCs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential sensor pair or between signal line and chassis ground. Use Value: Prevents latch-up or gate oxide damage in precision ADC front-ends by limiting transient voltage to ≤12.1 V while maintaining <200 μA leakage at 7.02 V operating bias. |
Use Scenario: Safeguarding microcontroller GPIOs connected to door lock actuators, window motors, or lighting switches subject to ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Clamping device on each switched input line, referenced to battery ground, with no polarity dependency. Use Value: Enables use of single P6SMB8.2CA-M3/5B instead of dual unidirectional devices - reducing BOM count and PCB area while meeting AEC-Q101 qualification (via HM3 variant lineage). |
| RS-485 Transceiver Bus Line Protection | USB 2.0 Data Line ESD Suppression |
Use Scenario: Shielding half-duplex RS-485 transceivers (e.g., MAX13487) against cable discharge events and field-induced surges in building control networks. IC Role / Device Role / Timing Role: Placed differentially across A/B bus lines, leveraging inherent bidirectionality to suppress common-mode and differential transients. Use Value: Maintains signal integrity with <1 pF typical junction capacitance at zero bias - avoids data rate degradation up to 20 Mbps while clamping surges to 12.1 V. |
Use Scenario: Adding secondary-level ESD protection on USB D+/D− lines upstream of integrated port protection in consumer docking stations. IC Role / Device Role / Timing Role: Low-capacitance TVS bridging D+ and D− to ground, activated only during >8 kV HBM events. Use Value: Provides 600 W surge headroom beyond IEC 61000-4-2 Level 4 (15 kV air, 8 kV contact), with clamping voltage well below USB 2.0 VBUS tolerance limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0CA | Lower VWM (6.4 V), higher VC (12.5 V at 48.8 A), same SMB package and 600 W rating. | Slightly tighter clamping margin but reduced standoff headroom - better suited for 5 V systems with lower VCC tolerance. | Select SMAJ8.0CA if design requires lower VWM to avoid leakage near 7 V rails; verify VC does not exceed protected IC's absolute max rating. |
| 1.5SMC8.2CA | Same VWM/VC specs, but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm); 1.5 kW rating (derated to 600 W at 10/1000 μs). | Higher thermal mass allows longer surge duration handling; incompatible with SMB footprints - requires PCB redesign. | Choose 1.5SMC8.2CA only when board space permits larger package and higher sustained surge energy is required beyond SMB thermal limits. |
Compared with SMAJ8.0CA and 1.5SMC8.2CA, the P6SMB8.2CA-M3/5B offers optimal balance of compact SMB footprint, halogen-free compliance, and precise 7.02 V standoff - making it preferred for space-constrained, high-volume commercial and automotive modules where layout reuse and RoHS alignment are critical.
Availability
P6SMB8.2CA-M3/5B is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, RS-485 communication buses, and USB 2.0 data line protection requiring stable component supply and halogen-free compliance.
Supply support for P6SMB8.2CA-M3/5B 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, power efficiency, and AEC-Q101 qualification.
The P6SMB Series targets cost-sensitive, high-volume transient protection needs in automotive, industrial, and telecom infrastructure - engineered for automated SMT assembly, low-profile mounting, and consistent clamping performance across temperature and surge repetition rates.
FAQ
What is the standoff voltage (VWM) of the P6SMB8.2CA-M3/5B?
The P6SMB8.2CA-M3/5B has a standoff voltage (VWM) of 7.02 V, meaning it remains in high-impedance state up to this reverse voltage level with leakage current limited to <200 μA. This value is confirmed in the Vishay datasheet Table "ELECTRICAL CHARACTERISTICS" for part number P6SMB8.2CA, and directly applies to the P6SMB8.2CA-M3/5B variant as the M3 suffix denotes halogen-free RoHS compliance without altering electrical parameters.
Is the P6SMB8.2CA-M3/5B unidirectional or bidirectional?
The P6SMB8.2CA-M3/5B is a bidirectional TVS diode, indicated by the "CA" suffix per Vishay's naming convention. Its electrical characteristics - including breakdown voltage (VBR), clamping voltage (VC), and leakage current - apply identically in both directions, eliminating polarity concerns during PCB placement and enabling protection of AC-coupled or differential signal paths such as RS-485 or CAN bus lines.
What package does the P6SMB8.2CA-M3/5B use, and what are its key mechanical dimensions?
The P6SMB8.2CA-M3/5B uses the SMB (DO-214AA) surface-mount package, measuring 4.57 mm × 3.94 mm × 2.20 mm (L × W × H) with a 5.59 mm × 4.06 mm recommended copper pad layout per terminal. Its low-profile construction supports automated pick-and-place and meets UL 94 V-0 flammability requirements, as specified in the Vishay P6SMB Series datasheet revision 09-Jan-2024.
Does the P6SMB8.2CA-M3/5B meet automotive qualification standards?
The base P6SMB8.2CA-M3/5B is commercial-grade and RoHS/halogen-free compliant, but not AEC-Q101 qualified. However, Vishay offers the P6SMB8.2CAHM3_B variant (with "HM3_B" suffix) which is AEC-Q101 qualified and shares identical electrical specs - confirming that the P6SMB8.2CA-M3/5B belongs to a family with automotive-qualified derivatives, though the specific M3/5B variant itself is rated for commercial use.
What is the maximum clamping voltage (VC) of the P6SMB8.2CA-M3/5B under surge conditions?
The P6SMB8.2CA-M3/5B has a maximum clamping voltage (VC) of 12.1 V at 49.6 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per standard test conditions (TA = 25 °C) and defines the upper voltage limit imposed on protected circuitry during worst-case transient events - critical for ensuring downstream ICs remain within their absolute maximum voltage ratings.
P6SMB8.2CA-M3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7.02V
- Voltage - Breakdown (Min):
- 7.79V
- Voltage - Clamping (Max) @ Ipp:
- 12.1V
- Current - Peak Pulse (10/1000µs):
- 49.6A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB8.2CA-M3/5B FAQ
1.How can I place an order for P6SMB8.2CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB8.2CA-M3/5B 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 P6SMB8.2CA-M3/5B reliable?
The price and inventory of P6SMB8.2CA-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB8.2CA-M3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB8.2CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB8.2CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB8.2CA-M3/5B?
P6SMB8.2CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB8.2CA-M3/5B 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 P6SMB8.2CA-M3/5B?
For technical support, including P6SMB8.2CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB8.2CA-M3/5B requirements.
6.How does Aetrix verify that P6SMB8.2CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB8.2CA-M3/5B 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 P6SMB8.2CA-M3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB8.2CA-M3/5B?
All P6SMB8.2CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB8.2CA-M3/5B, 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 P6SMB8.2CA-M3/5B part is unused and in its original packaging.
Return procedure for P6SMB8.2CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB8.2CA-M3/5B Tags
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