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Vishay General Semiconductor - Diodes Division P6SMB51AHE3_B/H
- Part No.:
- P6SMB51AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB51AHE3_B/H.pdf
- Description:
- 600W,51V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,582
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Product details
Overview
P6SMB51AHE3_B/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 IT = 1.0 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. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics against inductive switching transients and ESD.
For engineers reviewing the P6SMB51AHE3_B/H datasheet, P6SMB51AHE3_B/H pinout, P6SMB51AHE3_B/H application, or P6SMB51AHE3_B/H equivalent, this AEC-Q101 qualified TVS offers validated surge robustness, low clamping ratio (VC/VBR ≈ 1.39), and RoHS-compliant matte tin-plated leads suitable for automated SMT assembly and high-reliability automotive ECUs.
Technical Context
This unidirectional TVS operates by avalanche breakdown to clamp transient overvoltages above its stand-off voltage (VWM = 43.6 V) while maintaining <1.0 μA reverse leakage at rated temperature. Its glass-passivated junction ensures stable VBR tolerance (±5%) and fast response time (<1.0 ns), critical for protecting sensitive 3.3 V/5 V logic interfaces.
The device is thermally characterized with RθJA = 100 °C/W and RθJL = 20 °C/W, enabling reliable operation up to TJ = +150 °C. Its MSL Level 1 rating (peak reflow ≤260 °C) and JESD201 Class 2 whisker resistance confirm suitability for high-volume automotive PCB assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 48.5 V / 53.6 V at 1.0 mA - defines precise avalanche onset window for repeatable clamping behavior |
| VWM | 43.6 V - maximum continuous reverse voltage before significant leakage; sets safe operating margin below VBR |
| VC @ IPPM | 70.1 V at 8.6 A - clamped voltage during 10/1000 μs surge; determines protected circuit's worst-case overvoltage stress |
| PPPM | 600 W - peak transient power handling capability; supports repetitive surges at 0.01% duty cycle |
| IPPM | 8.6 A - maximum non-repetitive surge current; sized for IEC 61000-4-5 Level 4 (4 kV) line transients |
| TJ max. | +150 °C - junction temperature limit; enables use in under-hood automotive environments without derating |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode indicated by band on body; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 4 kV in industrial and automotive power rails |
| AEC-Q101 qualification | Validated for automotive control modules requiring extended temperature cycling and long-term reliability |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free reflow without popcorn or delamination risk |
| Glass passivated junction | Ensures stable VBR drift <0.1%/°C and <5% unit-to-unit variation across production lots |
| Low clamping ratio (VC/VBR = 1.39) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio TVS devices |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protecting 12 V sensor supply lines from load-dump transients and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor VCC and chassis ground to clamp positive-going spikes. Use Value: Limits transient voltage to ≤70.1 V, preventing damage to 36 V-rated LDOs and microcontroller GPIOs. |
Use Scenario: Shielding 24 V digital input circuits from inductive kickback when solenoids de-energize. IC Role / Device Role / Timing Role: Standoff protection on optocoupler input side to absorb 10/1000 μs surges up to 8.6 A. Use Value: Maintains signal integrity by clamping within 1 ns, avoiding false triggering of isolation barriers. |
| Telecom Power Supply Front-End | Consumer Appliance Motor Drive Board |
Use Scenario: Safeguarding AC/DC converter primary-side control ICs from lightning-induced surges on 48 V telecom lines. IC Role / Device Role / Timing Role: Primary-side TVS across bulk capacitor to suppress common-mode transients entering via input filter. Use Value: Dissipates 600 W peak energy without thermal runaway, preserving MOSFET gate drivers and PWM controllers. |
Use Scenario: Suppressing commutation spikes on BLDC motor phase outputs feeding hall-effect sensors. IC Role / Device Role / Timing Role: Unidirectional clamp from each phase to DC bus ground, limiting dv/dt stress on position feedback ICs. Use Value: Reduces EMI-induced measurement errors by holding sensor rail overvoltage to <70.1 V during 100 ns spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ51A-E3/5B | Same VBR range (48.5–53.6 V) but lower PPPM = 400 W; SMA package (DO-214AC), larger footprint | Limited to lower-energy transients (IEC 61000-4-5 Level 2); less suitable for automotive load-dump | Select when cost sensitivity outweighs surge margin and board space permits larger package |
| 1.5SMC51A | Same electrical specs but SMC (DO-214AB) package; 1.5 kW rating, higher IPPM = 17.3 A | Over-specified for most 600 W applications; requires larger pad layout and higher assembly cost | Choose only if legacy SMC footprint reuse or future-proofing against higher surge levels is required |
Compared with SMAJ51A-E3/5B, P6SMB51AHE3_B/H delivers 50% higher surge power headroom in a smaller SMB footprint; versus 1.5SMC51A, it reduces PCB area by 30% while retaining full AEC-Q101 compliance and optimal clamping performance for 12 V/24 V systems.
Availability
P6SMB51AHE3_B/H is available at Aetrix Electronics and suitable for automotive engine control units, industrial programmable logic controllers, and telecom power supply front-ends requiring stable component supply with AEC-Q101 traceability and RoHS compliance.
Supply support for P6SMB51AHE3_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, rectifiers, and TVS devices, with emphasis on high-reliability, automotive-qualified components.
The P6SMB Series targets automotive and industrial transient protection, delivering AEC-Q101 qualified TVS diodes in compact SMB packages optimized for automated SMT and harsh-environment operation.
FAQ
What is the clamping voltage of P6SMB51AHE3_B/H at its rated peak pulse current?
The P6SMB51AHE3_B/H has a maximum clamping voltage (VC) of 70.1 V at its rated peak pulse current (IPPM) of 8.6 A, measured using the standard 10/1000 μs double-exponential waveform. This value ensures downstream ICs see no more than 70.1 V during surge events, making P6SMB51AHE3_B/H suitable for protecting 36 V-rated regulators and microcontrollers in automotive and industrial applications.
Is P6SMB51AHE3_B/H qualified for automotive applications?
Yes, P6SMB51AHE3_B/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3_B", where "HE3" denotes RoHS-compliant and AEC-Q101 qualified construction, and "_B" indicates AEC-Q101 qualification for the 6.8 V to 220 V voltage range. This qualification covers temperature cycling, high-temperature reverse bias, and ESD testing required for under-hood automotive modules.
What is the standoff voltage (VWM) of P6SMB51AHE3_B/H, and why does it matter?
The standoff voltage (VWM) of P6SMB51AHE3_B/H is 43.6 V - the maximum continuous reverse voltage it can block without exceeding 1.0 μA leakage current. This parameter establishes the design margin between normal operating voltage and avalanche onset; for example, it allows safe use on 36 V nominal automotive rails where transients may reach 40 V, ensuring no false triggering during steady-state operation while remaining ready to clamp at 48.5 V.
What package type does P6SMB51AHE3_B/H use, and what are its key mechanical features?
P6SMB51AHE3_B/H uses the SMB (DO-214AA) surface-mount package: a low-profile, rectangular case measuring 3.94 mm × 2.20 mm × 1.52 mm with matte tin-plated leads. Key mechanical features include UL 94 V-0 flammability-rated molding compound, MSL Level 1 moisture sensitivity, and JESD201 Class 2 whisker resistance - all verified for compatibility with lead-free reflow profiles peaking at 260 °C.
How does the thermal resistance of P6SMB51AHE3_B/H affect its surge handling capability?
P6SMB51AHE3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W. These values mean that under pulsed conditions, heat dissipates rapidly through the leads into copper pads, allowing the device to sustain its full 600 W peak pulse rating without thermal runaway. When mounted on 5.0 mm × 5.0 mm copper pads per terminal (per datasheet fig. 2), P6SMB51AHE3_B/H maintains safe junction temperatures even during repetitive 10/1000 μs surges at 0.01% duty cycle.
P6SMB51AHE3_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:
- 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:
- 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)
P6SMB51AHE3_B/H FAQ
1.How can I place an order for P6SMB51AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB51AHE3_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 P6SMB51AHE3_B/H reliable?
The price and inventory of P6SMB51AHE3_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 P6SMB51AHE3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB51AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB51AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB51AHE3_B/H?
P6SMB51AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB51AHE3_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 P6SMB51AHE3_B/H?
For technical support, including P6SMB51AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB51AHE3_B/H requirements.
6.How does Aetrix verify that P6SMB51AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB51AHE3_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 P6SMB51AHE3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB51AHE3_B/H?
All P6SMB51AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB51AHE3_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 P6SMB51AHE3_B/H part is unused and in its original packaging.
Return procedure for P6SMB51AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB51AHE3_B/H Tags
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