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Vishay General Semiconductor - Diodes Division P6SMB51AHE3_A/H
- Part No.:
- P6SMB51AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB51AHE3_A/H.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,061
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Product details
Overview
P6SMB51AHE3_A/H from Vishay General Semiconductor is a unidirectional 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 (10/1000 µs). It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients in automotive and industrial power supplies.
For engineers reviewing the P6SMB51AHE3_A/H datasheet, P6SMB51AHE3_A/H pinout, P6SMB51AHE3_A/H application, or P6SMB51AHE3_A/H equivalent, this AEC-Q101-qualified TVS offers verified clamping performance, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability automotive ECU and battery management designs.
Technical Context
This unidirectional TVS operates with a reverse stand-off voltage (VWM) of 43.6 V and exhibits ≤1.0 µA maximum reverse leakage at that voltage. Its fast response time and low clamping ratio (VC/VBR ≈ 1.31) ensure effective overvoltage suppression before downstream components sustain damage.
The device features glass-passivated junction construction, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and thermal resistance of 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads. It supports repetitive surge duty cycles up to 0.01 % at TA = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 48.5 V / 53.6 V at IT = 1 mA - defines precise voltage threshold where avalanche conduction begins |
| VWM | 43.6 V - maximum continuous reverse operating voltage before significant leakage |
| VC @ IPPM | 70.1 V at 8.6 A - clamped voltage during 600 W transient, limiting stress on protected circuitry |
| PPPM | 600 W (10/1000 µs waveform) - peak transient energy absorption capability under standardized surge test |
| IPPM | 8.6 A - peak pulse current corresponding to VC, directly usable for PCB trace sizing and layout margining |
| TJ max | +150 °C - enables operation in under-hood automotive environments without derating below 125 °C ambient |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.220" × 0.130" footprint and 0.086" height |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating; cathode indicated by band on body; terminals are matte tin plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse bias reference | Connected to system ground or lower-potential rail in unidirectional clamp configuration |
| Cathode | Avalanche conduction terminal / Clamping node | Connected to protected line (e.g., 48 V supply rail or CAN-H); conducts surge current to ground when VAK exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per JESD47 |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/3a and ISO 16750-2 load dump surges without degradation |
| Low clamping ratio (VC/VBR = 1.31) | Minimizes overvoltage overshoot during fast transients, reducing risk of gate oxide rupture in MOSFETs |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking or special handling |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term leakage stability across temperature and humidity stress |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects microcontroller GPIO and LIN transceiver inputs from load dump and inductive kickback in 12 V/24 V vehicle subsystems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input line and chassis ground, clamping transients within 1 ns. Use Value: Prevents latch-up and permanent damage to 5 V tolerant I/O pins during 100 V/50 ms load dump events per ISO 16750-2. |
Use Scenario: Shields 24 V digital input channels of programmable logic controllers from relay coil flyback and field wiring ESD. IC Role / Device Role / Timing Role: Standoff protection element mounted at connector interface, shunting surge energy before signal conditioning circuitry. Use Value: Maintains <1 µA leakage at 24 V nominal, ensuring clean logic thresholds while surviving repeated 1 kV/500 Ω surge pulses. |
| Telecom Power Supply DC Bus | Motor Drive Gate Driver Stage |
Use Scenario: Safeguards secondary-side DC bus (48 V) in telecom rectifiers against lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: Primary-level transient suppressor on bulk capacitor output, coordinated with upstream MOVs. Use Value: Clamps 600 W surges to ≤70.1 V, preventing overvoltage trip in DC-DC controllers and preserving hold-up time. |
Use Scenario: Protects high-side and low-side gate drivers in BLDC inverters from Miller-induced voltage spikes during IGBT/MOSFET switching. IC Role / Device Role / Timing Role: Localized clamp on gate-source nodes of power stage drivers, placed adjacent to driver ICs. Use Value: Limits gate voltage excursions to <±20 V, avoiding unintended turn-on and shoot-through failure modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ51A-E3/5T | Same VBR range (48.5–53.6 V), but SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-power or space-constrained layouts; not AEC-Q101 qualified | Select when board area is critical and automotive qualification is not required |
| 1.5SMC51A | Same electrical specs, but larger SMC (DO-214AB) package with higher surge rating margin (1500 W) | Better thermal dissipation for high-duty-cycle industrial environments; requires larger PCB pad area | Choose for non-automotive systems needing extended surge endurance beyond 600 W |
Compared with SMAJ51A-E3/5T and 1.5SMC51A, P6SMB51AHE3_A/H delivers optimal balance of AEC-Q101 compliance, SMB footprint compatibility, and validated 600 W surge handling - making it the preferred choice for production automotive electronics where qualification and layout reuse are mandatory.
Availability
P6SMB51AHE3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, and telecom power supplies requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB51AHE3_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 belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for robust transient suppression in harsh automotive and industrial environments where AEC-Q101 validation and repeatable clamping behavior are essential.
FAQ
What is the maximum clamping voltage of the P6SMB51AHE3_A/H under a 600 W transient?
The P6SMB51AHE3_A/H has a maximum clamping voltage (VC) of 70.1 V at 8.6 A peak pulse current, measured using the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and ensures predictable overvoltage limiting for protected circuits. The P6SMB51AHE3_A/H maintains this clamping performance without degradation after repeated surges within its specified duty cycle.
Is P6SMB51AHE3_A/H qualified for automotive applications?
Yes, P6SMB51AHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation revision 09-Jan-2024. It undergoes stress testing for temperature cycling, high-temperature reverse bias, and surge endurance per JESD47, making it suitable for under-hood and body electronics in passenger vehicles and commercial vehicles. The P6SMB51AHE3_A/H meets all requirements for Grade 1 (−40 °C to +125 °C ambient) operation.
What does the "_A/H" suffix in P6SMB51AHE3_A/H indicate?
The "_A/H" suffix in P6SMB51AHE3_A/H denotes packaging and revision: "A" is the revision code per Vishay's internal documentation, and "H" specifies 7" diameter plastic tape-and-reel delivery with 750 units per reel. This matches the ordering information table in Document Number 88370, confirming standard commercial packaging with RoHS-compliant and AEC-Q101-qualified material content. The P6SMB51AHE3_A/H is not a sample or engineering unit - it is a fully qualified production part.
How does the thermal resistance of P6SMB51AHE3_A/H affect PCB layout?
P6SMB51AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. To maintain TJ ≤ 150 °C during repetitive 600 W surges, designers must allocate sufficient copper area and avoid thermal bottlenecks near the SMB footprint. The P6SMB51AHE3_A/H benefits from symmetric pad design and optional thermal vias - unlike smaller packages, its SMB outline provides inherent thermal margin for sustained surge duty.
Can P6SMB51AHE3_A/H replace bidirectional TVS diodes in signal-line protection?
No - P6SMB51AHE3_A/H is unidirectional and must be used only in DC-biased applications where polarity is fixed (e.g., positive-rail protection to ground). For AC or differential signal lines like RS-485 or CAN, a bidirectional variant such as P6SMB51CAHE3_A/H is required. Using P6SMB51AHE3_A/H on bidirectional signals risks forward conduction and failure. Always verify polarity alignment before substituting the P6SMB51AHE3_A/H in existing designs.
P6SMB51AHE3_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:
- 1
- Bidirectional Channels:
- -
- 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)
P6SMB51AHE3_A/H FAQ
1.How can I place an order for P6SMB51AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB51AHE3_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 P6SMB51AHE3_A/H reliable?
The price and inventory of P6SMB51AHE3_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 P6SMB51AHE3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB51AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB51AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB51AHE3_A/H?
P6SMB51AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB51AHE3_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 P6SMB51AHE3_A/H?
For technical support, including P6SMB51AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB51AHE3_A/H requirements.
6.How does Aetrix verify that P6SMB51AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB51AHE3_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 P6SMB51AHE3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB51AHE3_A/H?
All P6SMB51AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB51AHE3_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 P6SMB51AHE3_A/H part is unused and in its original packaging.
Return procedure for P6SMB51AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB51AHE3_A/H Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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