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Vishay General Semiconductor - Diodes Division P6SMB51CAHE3_A/H
- Part No.:
- P6SMB51CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB51CAHE3_A/H.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,693
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Product details
Overview
P6SMB51CAHE3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 51 V breakdown voltage (VBR = 48.5–53.6 V at 1 mA), 70.1 V maximum clamping voltage (VC) at 8.6 A peak pulse current, and 600 W peak pulse power (10/1000 μs waveform). It protects signal lines and power rails in automotive sensor units and industrial control interfaces against ESD and inductive switching transients.
For engineers reviewing the P6SMB51CAHE3_A/H datasheet, P6SMB51CAHE3_A/H pinout, P6SMB51CAHE3_A/H application, or P6SMB51CAHE3_A/H equivalent, key selection considerations include bidirectional clamping symmetry, AEC-Q101 qualification status, 150 °C max junction temperature, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ at 43.6 V), but switches to low-impedance conduction within <1 ns when reverse voltage exceeds its 51 V nominal breakdown threshold. Its bidirectional architecture ensures symmetrical clamping in both polarities without polarity marking.
Designed for repetitive surge handling, it delivers 600 W peak pulse power with 0.01% duty cycle, supported by low incremental surge resistance and thermal resistance of 100 °C/W (junction-to-ambient) on standard PCB pads. The glass-passivated junction and matte tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 48.5 V / 53.6 V at 1 mA - defines precise voltage threshold where clamping initiates in both directions |
| VWM | 43.6 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 70.1 V at 8.6 A - clamping voltage seen across terminals during 10/1000 μs surge, limiting downstream stress |
| PPPM | 600 W - peak transient power dissipation capability with standardized waveform, enabling robust ESD/lightning protection |
| TJ max | +150 °C - maximum junction temperature allowing operation in under-hood automotive and industrial environments |
| Package | SMB (DO-214AA) - surface-mount outline with 0.220" × 0.130" footprint, optimized for automated placement and thermal relief |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating; unmarked bidirectional construction with no cathode/anode designation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; symmetric conduction path |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically identical to Terminal 1; no polarity marking required for bidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and leakage performance in both directions eliminates need for polarity-aware layout |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) when mounted per recommended pad layout |
| Low-profile SMB package | 0.086" height enables use in space-constrained modules while maintaining 100 °C/W thermal resistance |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN bus and LIN signal lines in automotive radar modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt TVS diode placed directly at connector entry point to clamp transients before reaching transceiver IC. Use Value: 70.1 V clamping voltage ensures transceiver input stays below absolute maximum rating during 10/1000 μs surges up to 8.6 A. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers subjected to relay coil flyback and field wiring faults. IC Role / Device Role / Timing Role: Bidirectional voltage clamp across input terminals to absorb reverse- and forward-polarity transients. Use Value: Symmetrical 48.5–53.6 V breakdown enables consistent protection regardless of fault polarity, reducing BOM count. |
| Telecom Line Interface | Consumer Power Adapter ESD |
|
Use Scenario: Shielding Ethernet PHY interface circuitry in PoE-powered switches from lightning-induced surges on data pairs. IC Role / Device Role / Timing Role: Primary-level TVS on differential pair, coordinated with secondary GDT or MOV for staged protection. Use Value: 600 W peak power rating supports coordination with upstream protectors in multi-stage telecom surge designs. |
Use Scenario: ESD suppression on DC output lines of USB-C PD adapters where compact size and low capacitance are critical. IC Role / Device Role / Timing Role: Secondary-side transient suppressor between output capacitor and connector to prevent ESD coupling into regulation loop. Use Value: SMB footprint fits tight layouts; 1 μA leakage at 43.6 V avoids loading feedback networks in precision voltage regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ51CA | Same VBR range (48.5–53.6 V) and SMB package, but lower 400 W PPPM rating and no AEC-Q101 qualification | Targeted at commercial-grade power supplies and consumer electronics, not automotive systems | Select SMAJ51CA only when AEC-Q101 compliance and 600 W surge margin are not required |
| SMCJ51CA | Higher 1500 W PPPM, same VBR/VC, but larger SMC (DO-214AB) package (0.280" × 0.230") | Used where higher energy absorption is needed, e.g., AC mains input stages or motor drive controls | Choose SMCJ51CA when board space allows larger footprint and system-level surge tests exceed 600 W capability |
Compared with SMAJ51CA and SMCJ51CA, the P6SMB51CAHE3_A/H uniquely balances automotive qualification, 600 W surge capacity, and minimal SMB footprint-making it optimal for space-constrained, safety-critical signal-line protection where full AEC-Q101 validation is mandatory.
Availability
P6SMB51CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line interfaces, and consumer power adapter designs requiring stable component supply with guaranteed long-term sourcing.
Supply support for P6SMB51CAHE3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom infrastructure, designed specifically to meet stringent AEC-Q101, IEC 61000-4-2/4-5, and UL 94 V-0 requirements.
FAQ
What does the "CA" suffix indicate in P6SMB51CAHE3_A/H?
The "CA" suffix denotes a bidirectional configuration: the P6SMB51CAHE3_A/H provides symmetrical transient voltage suppression in both polarities, with identical breakdown and clamping characteristics regardless of voltage polarity applied across its terminals. This eliminates the need for polarity-aware PCB layout and simplifies design for AC-coupled or differential signal paths.
Is P6SMB51CAHE3_A/H qualified for automotive applications?
Yes, P6SMB51CAHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" (RoHS-compliant + AEC-Q101 qualified) and revision "A/H". It has passed stress tests including temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 standards, making it suitable for under-hood and ADAS sensor applications.
What is the maximum clamping voltage of P6SMB51CAHE3_A/H under surge conditions?
The maximum clamping voltage (VC) of P6SMB51CAHE3_A/H is 70.1 V at 8.6 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per JEDEC standards and represents the upper limit of voltage seen across the device during worst-case transient events, ensuring downstream ICs remain within safe operating limits.
How does the SMB (DO-214AA) package of P6SMB51CAHE3_A/H affect thermal performance?
The SMB package of P6SMB51CAHE3_A/H delivers a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per Vishay's recommended layout. This enables reliable 5.0 W steady-state power dissipation at +50 °C ambient and supports short-duration 600 W surge handling without exceeding the 150 °C maximum junction temperature.
What is the stand-off voltage (VWM) of P6SMB51CAHE3_A/H, and why does it matter?
The stand-off voltage (VWM) of P6SMB51CAHE3_A/H is 43.6 V - the maximum DC or continuous reverse voltage that can be applied without exceeding 1 μA leakage current. This parameter ensures the device remains non-conductive during normal operation while providing sufficient margin below the 48.5 V minimum breakdown voltage to avoid false triggering in noisy 24 V or 48 V systems.
P6SMB51CAHE3_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):
- 43.6V
- Voltage - Breakdown (Min):
- 48.5V
- Voltage - Clamping (Max) @ Ipp:
- 70.1V
- Current - Peak Pulse (10/1000µs):
- 8.6A
- 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)
P6SMB51CAHE3_A/H FAQ
1.How can I place an order for P6SMB51CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB51CAHE3_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 P6SMB51CAHE3_A/H reliable?
The price and inventory of P6SMB51CAHE3_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 P6SMB51CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB51CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB51CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB51CAHE3_A/H?
P6SMB51CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB51CAHE3_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 P6SMB51CAHE3_A/H?
For technical support, including P6SMB51CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB51CAHE3_A/H requirements.
6.How does Aetrix verify that P6SMB51CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB51CAHE3_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 P6SMB51CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB51CAHE3_A/H?
All P6SMB51CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB51CAHE3_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 P6SMB51CAHE3_A/H part is unused and in its original packaging.
Return procedure for P6SMB51CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB51CAHE3_A/H Tags
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