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Vishay General Semiconductor - Diodes Division P6SMB51CAHE3_B/H
- Part No.:
- P6SMB51CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB51CAHE3_B/H.pdf
- Description:
- 600W,51V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,726
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Product details
Overview
P6SMB51CAHE3_B/H from Vishay General Semiconductor is a bidirectional surface-mount 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 with 10/1000 μs waveform - deployed for ESD and surge protection on signal lines of automotive sensor units and industrial I/O interfaces.
For engineers reviewing the P6SMB51CAHE3_B/H datasheet, P6SMB51CAHE3_B/H pinout, P6SMB51CAHE3_B/H application, or P6SMB51CAHE3_B/H equivalent, this device delivers AEC-Q101 qualification, low incremental surge resistance, and bidirectional clamping symmetry critical for robust transient suppression in CAN, LIN, and analog sensor front-ends without polarity sensitivity.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, VWM, and VC specifications in forward and reverse directions. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM = 43.6 V) and fast response time (<1 ns), enabling reliable suppression of EFT bursts and lightning-induced transients.
Thermal performance is defined by RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), supporting operation up to TJ = +150 °C. The device meets J-STD-020 MSL Level 1 and is qualified per AEC-Q101 for automotive under-hood and chassis applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 48.5–53.6 V at 1 mA test current - defines precise voltage threshold where avalanche conduction begins in either polarity |
| Stand-off Voltage VWM | 43.6 V maximum - ensures no conduction during normal operation, preserving signal integrity on protected lines |
| Clamping Voltage VC | 70.1 V at 8.6 A IPPM (10/1000 μs) - limits transient voltage seen by downstream ICs to safe levels |
| Peak Pulse Power PPPM | 600 W - sustains high-energy surges (e.g., ISO 7637-2 Pulse 1/2a/5a) without failure |
| Maximum Leakage ID | <1.0 μA at VWM - negligible loading on low-power sensor outputs and precision analog circuits |
| Operating Temperature | −65 °C to +150 °C - supports deployment in engine control units, battery management systems, and industrial PLCs |
| AEC-Q101 Qualified | Yes - validated for automotive reliability including temperature cycling, HTRB, and mechanical shock per AEC standard |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node in bidirectional configuration | No polarity marking - symmetrical terminals enable layout flexibility and eliminate orientation errors during automated placement |
| Cathode | Current exit terminal in forward bias; common node in bidirectional configuration | Identical to Anode electrically - bidirectional operation means both terminals behave identically under transient stress |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., RS-485, CAN bus) without external polarity management |
| 600 W peak pulse power | Withstands ISO 16750-2 load dump surges and IEC 61000-4-5 combination wave (10/700 μs) up to 4 kV in system-level testing |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage stress on protected ICs - critical for 3.3 V/5 V logic and automotive microcontrollers |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body electronics, and ADAS modules requiring zero field failures over 15-year service life |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow at 260 °C peak - compatible with standard SMT assembly without dry-pack or baking requirements |
Applications
| Automotive Sensor Interface Protection | Industrial Analog Input Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and pressure/temperature sensor outputs in engine control modules against load dump and EFT. IC Role / Device Role / Timing Role: Bidirectional transient clamp placed directly at connector entry point before signal conditioning amplifier. Use Value: Limits induced transients to ≤70.1 V, preventing latch-up or gate oxide damage in 5 V tolerant MCU I/O pins. |
Use Scenario: Safeguarding 4–20 mA current loop receivers and ADC front-ends in programmable logic controllers from wiring faults and lightning coupling. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) TVS shunting surge energy away from precision op-amps and reference buffers. Use Value: Maintains <0.01% full-scale error contribution while surviving 1 kV/500 A surge events per IEC 61000-4-5. |
| Consumer USB Port ESD Protection | Telecom Line Interface Protection |
Use Scenario: Adding secondary-level ESD immunity to USB 2.0 D+/D− lines in set-top boxes and smart displays exposed to human contact. IC Role / Device Role / Timing Role: Fast-response (sub-ns) bidirectional suppressor placed after common-mode choke and before USB PHY. Use Value: Clamps ±15 kV HBM ESD strikes to <70 V within 1 ns, preventing data corruption and PHY latch-up. |
Use Scenario: Protecting Ethernet PHY magnetics and PoE interface circuitry in network switches from induced surges on RJ-45 ports. IC Role / Device Role / Timing Role: Symmetrical TVS pair (one per differential pair) mounted at board edge before transformer center taps. Use Value: Handles 10/1000 μs surges up to 600 W without degradation, maintaining signal integrity up to 100 MHz. |
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), but lower PPPM (400 W); SMA package (DO-214AC), larger footprint than SMB | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); not AEC-Q101 qualified | Select when cost is prioritized over automotive qualification and surge margin; requires PCB pad redesign |
| SMCJ51CA | Higher PPPM (1500 W); SMC package (DO-214AB), 30% larger than SMB; same VBR/VC specs | Suitable for primary-level protection in DC power rails (e.g., 48 V telecom supplies) where space permits | Choose for higher surge immunity where board area allows; not drop-in due to different thermal pad layout and height |
Compared with SMAJ51CA and SMCJ51CA, the P6SMB51CAHE3_B/H provides optimal balance of AEC-Q101 compliance, 600 W surge capability, and compact SMB footprint - making it the preferred choice for space-constrained automotive and industrial signal-line protection where qualification and reliability are non-negotiable.
Availability
P6SMB51CAHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial analog I/O modules, consumer USB port hardening, and telecom line protection requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB51CAHE3_B/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 designs and manufactures discrete semiconductors including diodes, MOSFETs, and optoelectronics, with emphasis on high-reliability, automotive-qualified components meeting stringent AEC and industrial standards.
The P6SMB Series targets robust transient suppression in harsh environments - engineered specifically for automotive, industrial, and telecom applications demanding AEC-Q101 validation, low clamping voltage, and consistent bidirectional performance.
FAQ
What is the exact breakdown voltage range for P6SMB51CAHE3_B/H?
The P6SMB51CAHE3_B/H has a guaranteed breakdown voltage VBR of 48.5 V to 53.6 V measured at 1 mA test current, per Vishay Document Number 88370. This range reflects manufacturing tolerance and ensures reliable triggering across temperature and unit-to-unit variation - critical for predictable clamping behavior in safety-critical automotive systems where the P6SMB51CAHE3_B/H is commonly deployed.
Is P6SMB51CAHE3_B/H unidirectional or bidirectional?
P6SMB51CAHE3_B/H is a bidirectional Transient Voltage Suppressor, indicated by the "CA" suffix in its part number. It provides symmetrical clamping in both polarities, with identical VBR, VWM, and VC values regardless of voltage polarity - making it ideal for protecting AC-coupled lines like CAN, LIN, RS-485, and audio interfaces where polarity reversal may occur during transients.
Does P6SMB51CAHE3_B/H meet AEC-Q101 qualification?
Yes, P6SMB51CAHE3_B/H is AEC-Q101 qualified, as confirmed by the "HE3" and "_B" suffixes in its ordering code and explicitly stated in Vishay's P6SMB Series datasheet (Rev. 09-Jan-2024). This qualification covers temperature cycling, high-temperature reverse bias (HTRB), and mechanical shock testing - validating its suitability for automotive powertrain, body control, and ADAS applications where the P6SMB51CAHE3_B/H is routinely specified.
What is the maximum clamping voltage of P6SMB51CAHE3_B/H at rated peak pulse current?
The P6SMB51CAHE3_B/H exhibits a maximum clamping voltage VC of 70.1 V at 8.6 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured across both terminals during transient conduction and represents the upper voltage limit imposed on protected circuitry - a key parameter for ensuring downstream ICs (e.g., 5 V MCUs or analog sensors) remain within absolute maximum ratings during surge events.
What package type does P6SMB51CAHE3_B/H use, and what are its key mechanical features?
P6SMB51CAHE3_B/H uses the SMB (DO-214AA) surface-mount package: low-profile (max height 1.95 mm), with 0.205" × 0.220" footprint, matte tin-plated leads compliant with J-STD-002, and UL 94 V-0 rated molding compound. Its MSL Level 1 rating enables direct reflow at 260 °C peak without preconditioning - a critical feature for high-yield SMT assembly of automotive ECUs where the P6SMB51CAHE3_B/H is integrated into production boards.
P6SMB51CAHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- 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)
P6SMB51CAHE3_B/H FAQ
1.How can I place an order for P6SMB51CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB51CAHE3_B/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_B/H reliable?
The price and inventory of P6SMB51CAHE3_B/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_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB51CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB51CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB51CAHE3_B/H?
P6SMB51CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB51CAHE3_B/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_B/H?
For technical support, including P6SMB51CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB51CAHE3_B/H requirements.
6.How does Aetrix verify that P6SMB51CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB51CAHE3_B/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_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB51CAHE3_B/H?
All P6SMB51CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB51CAHE3_B/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_B/H part is unused and in its original packaging.
Return procedure for P6SMB51CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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