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Vishay General Semiconductor - Diodes Division P6SMB20CAHE3_B/I
- Part No.:
- P6SMB20CAHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB20CAHE3_B/I.pdf
- Description:
- 600W,20V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,956
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Product details
Overview
P6SMB20CAHE3_B/I 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 20 V standoff voltage (VWM), 22.8–25.2 V breakdown voltage (VBR) at 1 mA, 27.7 V maximum clamping voltage at 21.7 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the P6SMB20CAHE3_B/I datasheet, P6SMB20CAHE3_B/I pinout, P6SMB20CAHE3_B/I application, or P6SMB20CAHE3_B/I equivalent, key selection considerations include its AEC-Q101 qualification, bidirectional polarity, SMB (DO-214AA) package compatibility, and clamping performance under repetitive surge conditions per IEC 61000-4-5.
Technical Context
This bidirectional TVS diode operates symmetrically in both forward and reverse directions, enabling transient suppression on AC-coupled or differential signal lines without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 μA at VWM), while the low incremental surge resistance supports consistent clamping across surge events.
The device is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 with a 260 °C reflow peak. Its thermal resistance (RθJA = 100 °C/W) reflects standard SMB package dissipation limits under typical PCB pad layout (0.2" × 0.2" copper pads).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20 V - Maximum continuous reverse operating voltage before significant conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 22.8–25.2 V at 1 mA - Confirmed breakdown range where device transitions into avalanche conduction; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 27.7 V at IPPM = 21.7 A - Peak voltage seen across terminals during 10/1000 μs surge; directly limits stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Sustained surge energy handling capability under standardized 10/1000 μs waveform; validates robustness against lightning or inductive switching events. |
| ID (Reverse Leakage) | <1 μA at 20 V - Minimal standby current at rated standoff voltage; preserves signal integrity and reduces quiescent power loss. |
| TJ max. | 150 °C - Maximum allowable junction temperature; supports operation in under-hood automotive or high-ambient industrial environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing per AEC specification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | One terminal of symmetrical PN junction; conducts surge current equally in either direction during overvoltage events. |
| Cathode | Transient current exit point (bidirectional) | Second terminal of symmetrical PN junction; completes low-impedance path to ground or return rail during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against high-energy transients such as ISO 7637-2 Pulse 5a (load dump) in 12 V automotive systems. |
| AEC-Q101 qualified (HE3 suffix) | Validates suitability for automotive electronics including body control modules, ADAS sensors, and infotainment power rails. |
| Low clamping ratio (VC/VBR ≈ 1.13) | Minimizes overvoltage overshoot during fast transients, reducing risk of latch-up or gate oxide damage in protected MOSFETs or ICs. |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without moisture-related popcorning or delamination risks. |
| UL 94 V-0 molding compound | Ensures flame-retardant encapsulation required for safety-critical applications in industrial and transportation equipment. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from ESD and load-dump-induced surges in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential or single-ended signal lines upstream of interface ICs. Use Value: Limits transient voltage to ≤27.7 V during 21.7 A surges, preventing damage to 3.3 V or 5 V logic inputs and maintaining communication integrity. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers against field-wiring induced transients and relay coil flyback. IC Role / Device Role / Timing Role: Parallel-connected TVS across input terminals to shunt surge energy before it reaches optocoupler or Schmitt-trigger input stages. Use Value: Clamps 24 V line spikes to 27.7 V within nanoseconds, ensuring reliable state detection and eliminating false triggering in noisy factory environments. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Secondary-level surge suppression on Ethernet PHY power rails and auxiliary control lines in telecom access equipment exposed to lightning-induced coupling. IC Role / Device Role / Timing Role: Standoff-rated TVS deployed after primary GDT or MOV protection to refine clamping level and handle residual fast-rising transients. Use Value: Provides precise 20 V standoff and 27.7 V clamping to protect 3.3 V/5 V PHY regulators and clock buffers without over-clamping or leakage interference. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines, HVAC blowers, and power tools connected to microcontroller-based motor drivers. IC Role / Device Role / Timing Role: Bidirectional TVS placed across motor terminals or across H-bridge supply rails to clamp inductive kickback in both directions. Use Value: Handles repetitive 600 W pulses at 0.01% duty cycle, extending MOSFET lifetime and eliminating need for external snubbers in cost-sensitive appliance designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20CA | Same SMB package, identical VWM (20 V), but lower PPPM (600 W same), higher VC (28.5 V at 21.2 A); not AEC-Q101 qualified. | Lacks automotive qualification; suitable for commercial/industrial use only where AEC compliance is not mandated. | Select when AEC-Q101 is unnecessary and cost optimization is prioritized over automotive traceability. |
| 1.5SMC20CA | Higher-power SMC package (1500 W PPPM), same VWM/VC specs; larger footprint (7.11 mm × 6.22 mm), different thermal profile (RθJA = 30 °C/W). | Better suited for high-repetition-rate surges or elevated ambient temperatures due to superior power dissipation and thermal mass. | Choose when system-level surge testing exceeds 600 W or board layout allows larger SMC footprint for enhanced long-term reliability. |
Compared with SMBJ20CA and 1.5SMC20CA, P6SMB20CAHE3_B/I uniquely combines AEC-Q101 qualification, SMB footprint efficiency, and verified 600 W clamping performance - making it optimal for space-constrained automotive and industrial designs requiring production traceability and standardized reflow compatibility.
Availability
P6SMB20CAHE3_B/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, telecom line cards, and consumer appliance motor drives requiring stable component supply, AEC-Q101 compliance, and repeatable surge immunity performance.
Supply support for P6SMB20CAHE3_B/I 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, precision, and application-specific validation.
The P6SMB series was developed for high-volume, surface-mount transient protection in automotive, industrial, and communications equipment - balancing compact size, AEC-Q101 qualification, and repeatable clamping performance under real-world surge conditions.
FAQ
What does the "CA" suffix indicate in P6SMB20CAHE3_B/I?
The "CA" suffix denotes a bidirectional configuration - meaning P6SMB20CAHE3_B/I provides symmetrical transient suppression in both polarities, unlike unidirectional variants (e.g., P6SMB20A). This enables use on AC-coupled lines, differential buses, or any application where voltage polarity reversal may occur during surge events, without requiring orientation-specific placement.
Is P6SMB20CAHE3_B/I suitable for automotive applications?
Yes, P6SMB20CAHE3_B/I is AEC-Q101 qualified (confirmed by the "HE3" and "_B" suffixes), tested for temperature cycling, humidity bias, and mechanical shock per automotive reliability standards. It is widely deployed in engine control units, body electronics, and ADAS sensor modules where sustained operation at 150 °C junction temperature and immunity to load-dump transients are required.
What is the clamping voltage of P6SMB20CAHE3_B/I under surge conditions?
P6SMB20CAHE3_B/I has a maximum clamping voltage (VC) of 27.7 V at a peak pulse current (IPPM) of 21.7 A using the standard 10/1000 μs waveform. This value is measured per JEDEC test methods and represents the highest voltage that will appear across the device during a defined surge event - critical for ensuring protected ICs remain within their absolute maximum ratings.
How does the SMB (DO-214AA) package of P6SMB20CAHE3_B/I compare to SMC or SMA packages?
The SMB (DO-214AA) package of P6SMB20CAHE3_B/I measures 4.57 mm × 3.94 mm × 2.20 mm - smaller than SMC (7.11 mm × 6.22 mm) but larger than SMA (4.57 mm × 2.79 mm). It offers a balance of power handling (600 W), PCB area efficiency, and thermal performance (RθJA = 100 °C/W), making P6SMB20CAHE3_B/I ideal for dense layouts where SMC is too large and SMA lacks sufficient surge rating.
What does the "_B/I" suffix mean in P6SMB20CAHE3_B/I?
The "_B" indicates AEC-Q101 qualification for the P6SMB20CAHE3_B/I series (covering VWM 6.8 V to 220 V), while "/I" specifies packaging in 13-inch diameter plastic tape and reel with 3200 units per reel - optimized for high-volume automated SMT assembly. This full suffix confirms both automotive-grade reliability and production-ready logistics configuration.
P6SMB20CAHE3_B/I 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 21.7A
- 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)
P6SMB20CAHE3_B/I FAQ
1.How can I place an order for P6SMB20CAHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB20CAHE3_B/I 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 P6SMB20CAHE3_B/I reliable?
The price and inventory of P6SMB20CAHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB20CAHE3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB20CAHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB20CAHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB20CAHE3_B/I?
P6SMB20CAHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB20CAHE3_B/I 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 P6SMB20CAHE3_B/I?
For technical support, including P6SMB20CAHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB20CAHE3_B/I requirements.
6.How does Aetrix verify that P6SMB20CAHE3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB20CAHE3_B/I 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 P6SMB20CAHE3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB20CAHE3_B/I?
All P6SMB20CAHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB20CAHE3_B/I, 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 P6SMB20CAHE3_B/I part is unused and in its original packaging.
Return procedure for P6SMB20CAHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB20CAHE3_B/I Tags
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