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Vishay General Semiconductor - Diodes Division P6SMB56AHE3/5B
- Part No.:
- P6SMB56AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56AHE3/5B.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,342
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Product details
Overview
P6SMB56AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features 56 V breakdown voltage (VBR), 47.8 V stand-off voltage (VWM), 77.0 V maximum clamping voltage (VC) at 7.8 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the P6SMB56AHE3/5B datasheet, P6SMB56AHE3/5B pinout, P6SMB56AHE3/5B application, or P6SMB56AHE3/5B equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (–65 to +150 °C), and compliance with J-STD-020 MSL level 1 reflow profile.
Technical Context
This TVS diode operates as a clamping device in reverse-biased configuration, activating when transient voltage exceeds its 47.8 V stand-off threshold. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at VWM), while fast response time (<1.0 ns) enables protection against ESD and inductive switching spikes.
The device delivers 600 W peak pulse power under standardized 10/1000 μs waveform conditions, with derating above 25 °C per Fig. 2. Its SMB package supports automated placement and meets UL 94 V-0 flammability rating, with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 53.2 V / 58.8 V at 1.0 mA test current - defines reliable conduction onset window for overvoltage triggering |
| VWM | 47.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 77.0 V at 7.8 A - clamped voltage seen by protected circuit during 600 W transient event |
| PPPM | 600 W - peak pulse power handling capability with 10/1000 μs waveform, 0.01% duty cycle |
| TJ max. | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, informs PCB copper pad sizing for thermal management |
| 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 molded compound meeting UL 94 V-0. Cathode indicated by band marking on body; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal | Connected to protected line; conducts when transient exceeds VWM, shunting surge to ground |
| Anode (unbanded end) | Reference/ground terminal | Typically tied to system ground or low-impedance return path to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without degradation |
| Glass passivated junction | Ensures stable VBR tolerance (±5%) and low parametric drift over lifetime and temperature |
| MSL level 1 moisture sensitivity | Allows unlimited floor life and single-reflow processing at 260 °C peak without baking |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS sensor interface applications |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for downstream ICs |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp positive-going surges above 47.8 V. Use Value: Limits voltage seen by MCU and CAN transceivers to ≤77.0 V during 600 W pulses, preventing latch-up or gate oxide damage. | Use Scenario: Shielding analog front-end of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS connected across differential signal pair (e.g., RS-485) or single-ended sensor output to ground. Use Value: Sub-1 ns response captures fast ESD events (IEC 61000-4-2 ±8 kV contact), preserving signal integrity and ADC accuracy. |
| Telecom DC Power Input Protection | Consumer Power Adapter Output Clamping |
Use Scenario: Safeguarding PoE-powered equipment inputs against induced lightning surges on Ethernet cables. IC Role / Device Role / Timing Role: TVS installed on DC input rail upstream of DC/DC converter to absorb common-mode transients. Use Value: Withstands repetitive 10/1000 μs surges up to 600 W, maintaining protection performance over 100,000 cycles. | Use Scenario: Preventing overvoltage damage to USB-C PD sink devices during adapter fault conditions. IC Role / Device Role / Timing Role: Unidirectional TVS placed on VBUS line to clamp overvoltage from faulty AC/DC adapters. Use Value: 47.8 V VWM aligns with USB PD 3.0 48 V profiles; 77.0 V VC stays below absolute maximum ratings of USB controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ56A-E3/5B | Same SMB package, 56 V VBR, but lower 400 W PPPM; no AEC-Q101 qualification | Not rated for automotive under-hood use; suitable for commercial-grade consumer/industrial power rails | Select when cost sensitivity outweighs automotive qualification and 600 W surge margin |
| 1.5SMC56A | Higher 1500 W PPPM, same VBR/VC, but larger SMC (DO-214AB) package; RoHS-compliant only | Requires larger PCB footprint; better suited for high-energy industrial motor drives | Choose when system-level surge requirements exceed IEC 61000-4-5 Level 4 and board space permits SMC |
Compared with SMAJ56A-E3/5B and 1.5SMC56A, P6SMB56AHE3/5B uniquely balances AEC-Q101 qualification, 600 W surge capacity, and compact SMB footprint - making it optimal for space-constrained automotive modules where reliability and standard compliance are mandatory.
Availability
P6SMB56AHE3/5B is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor nodes, telecom power inputs, and consumer USB-C PD systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB56AHE3/5B 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series is engineered for high-reliability transient suppression in automotive, industrial, and telecom infrastructure - delivering consistent clamping performance, AEC-Q101 validation, and robust thermal design in surface-mount form.
FAQ
What is the breakdown voltage tolerance for P6SMB56AHE3/5B?
The P6SMB56AHE3/5B has a breakdown voltage (VBR) range of 53.2 V to 58.8 V at 1.0 mA test current, representing a ±5% tolerance around the nominal 56 V rating. This tight tolerance ensures predictable clamping behavior across production lots and temperature ranges, critical for protecting sensitive 48 V automotive electronics where overvoltage margins are narrow. The specification is verified per ANSI/IEEE C62.35 standards.
Is P6SMB56AHE3/5B suitable for bidirectional signal line protection?
No, P6SMB56AHE3/5B is a unidirectional TVS diode, identified by the "A" suffix and cathode band marking. It conducts only in reverse bias and must be oriented with cathode toward the protected line. For bidirectional protection (e.g., RS-485, USB D+/D−), use the CA-suffixed variant P6SMB56CAHE3/5B, which provides symmetrical clamping in both polarities without polarity-sensitive layout constraints.
What does the "HE3" suffix indicate in P6SMB56AHE3/5B?
The "HE3" suffix in P6SMB56AHE3/5B denotes RoHS-compliant construction with AEC-Q101 qualification. "H" indicates AEC-Q101 qualification, "E3" confirms RoHS compliance and commercial-grade reliability. This distinguishes it from non-automotive variants like P6SMB56A-E3/5B (RoHS only) and ensures compliance with automotive supply chain requirements including PPAP documentation and extended temperature validation.
How does the thermal resistance of P6SMB56AHE3/5B affect PCB layout?
P6SMB56AHE3/5B has a typical RθJA of 100 °C/W, meaning junction temperature rises 100 °C per watt dissipated without heatsinking. To maintain TJ ≤ 150 °C at 5.0 W steady-state power, PCB copper pads must follow the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) minimum per terminal. Larger copper areas or internal layers reduce thermal resistance and improve surge endurance during repetitive events.
Can P6SMB56AHE3/5B replace P6SMB56A-E3/5B in existing designs?
Yes, P6SMB56AHE3/5B is a direct drop-in replacement for P6SMB56A-E3/5B in terms of footprint, electrical specs, and soldering profile - both use SMB package, identical pinout, and share VBR, VWM, and VC values. The only functional upgrade is AEC-Q101 qualification, which adds automotive reliability validation without requiring layout or schematic changes. No requalification is needed unless targeting automotive ASIL-level systems.
P6SMB56AHE3/5B 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 47.8V
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 77V
- Current - Peak Pulse (10/1000µs):
- 7.8A
- 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)
P6SMB56AHE3/5B FAQ
1.How can I place an order for P6SMB56AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56AHE3/5B 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 P6SMB56AHE3/5B reliable?
The price and inventory of P6SMB56AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB56AHE3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB56AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56AHE3/5B?
P6SMB56AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56AHE3/5B 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 P6SMB56AHE3/5B?
For technical support, including P6SMB56AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56AHE3/5B requirements.
6.How does Aetrix verify that P6SMB56AHE3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB56AHE3/5B 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 P6SMB56AHE3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB56AHE3/5B?
All P6SMB56AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56AHE3/5B, 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 P6SMB56AHE3/5B part is unused and in its original packaging.
Return procedure for P6SMB56AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56AHE3/5B Tags
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