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Vishay General Semiconductor - Diodes Division P6SMB56AHE3_A/I
- Part No.:
- P6SMB56AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56AHE3_A/I.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,278
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Product details
Overview
P6SMB56AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power rails and signal lines. It features a 56 V breakdown voltage (VBR = 53.2–58.8 V at IT = 1.0 mA), 47.8 V stand-off voltage (VWM), clamps transients to ≤77.0 V at 7.8 A peak pulse current (IPPM), and delivers 600 W peak pulse power with 10/1000 μs waveform - used in automotive sensor interfaces, industrial I/O protection, and DC power input stages.
For engineers reviewing the P6SMB56AHE3_A/I datasheet, P6SMB56AHE3_A/I pinout, P6SMB56AHE3_A/I application, or P6SMB56AHE3_A/I equivalent, this page provides verified electrical parameters, AEC-Q101 qualification status, SMB (DO-214AA) package dimensions, thermal resistance (RθJA = 100 °C/W), and design-meaningful clamping behavior for surge immunity validation in 12 V/24 V systems.
Technical Context
This TVS operates as a unidirectional avalanche diode with cathode-band polarity marking, optimized for fast transient suppression (<1 ps response) in low-inductance SMB package. Its glass-passivated junction ensures stable VBR tolerance (±5 %) and low incremental surge resistance, enabling reliable clamping during repetitive ESD or load-dump events.
Rated for -65 °C to +150 °C junction temperature, it supports automotive-grade reliability per AEC-Q101 (HE3 suffix), with MSL Level 1 moisture sensitivity and matte tin-plated leads compliant with J-STD-002 solderability standards. The device is not bidirectional - no internal symmetry; reverse conduction only occurs above VBR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 53.2 V / 58.8 V at 1.0 mA test current - defines precise avalanche onset window for predictable clamping threshold |
| VWM | 47.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA; sets safe margin below system nominal 48 V rail |
| VC @ IPPM | ≤77.0 V at 7.8 A - peak clamped voltage under 600 W 10/1000 μs surge; determines protected circuit's worst-case overvoltage exposure |
| IPPM | 7.8 A - maximum non-repetitive surge current capability; defines minimum PCB trace width and fuse coordination requirements |
| PPPM | 600 W - peak pulse power rating with 0.01 % duty cycle; validates suitability for ISO 7637-2 Pulse 1/2/5a automotive transients |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs derating above 25 °C ambient |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments without active cooling |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads. Cathode identified by black band; anode is unmarked end. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); mounting pad layout per Vishay spec: 5.59 mm × 2.159 mm (length × width).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to lower-potential side of protected line (e.g., GND or return path); defines directionality of clamping |
| Cathode | Avalanche conduction terminal / Surge sink node | Connected to higher-potential side (e.g., 12 V rail or signal line); absorbs transient energy into ground path during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor modules per stress test requirements |
| 600 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Load Dump (Pulse 5a) up to 120 V/100 ms without degradation when properly heatsinked |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes voltage overshoot across protected ICs - critical for 5 V/3.3 V logic interfacing with 48 V domains |
| MSL Level 1, 260 °C reflow compatible | Enables single-pass lead-free reflow assembly without pre-baking or special handling |
| Glass passivated junction | Ensures long-term parameter stability and low leakage (<1 μA at VWM) across temperature and humidity stress |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
|
Use Scenario: 12 V battery-fed ECUs exposed to load dump transients up to 120 V per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input, clamping surges within 1 ns to protect upstream regulators. Use Value: Limits peak voltage to ≤77.0 V, preventing damage to 80 V-rated input MOSFETs and maintaining regulator enable thresholds. |
Use Scenario: Analog output lines (e.g., 4–20 mA current loop) in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: TVS mounted at connector entry point, shunting induced lightning-induced surges on field wiring. Use Value: Clamps 1 kV/1.2–50 μs transients to <80 V, preserving ADC reference integrity and avoiding op-amp saturation recovery delay. |
| Telecom DC Power Feeder Protection | Consumer Device USB VBUS Line Guard |
|
Use Scenario: -48 V telecom rectifier outputs feeding remote radio units with long cable runs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on -48 V return path, coordinated with upstream fuses. Use Value: Absorbs 600 W surges while maintaining VWM = 47.8 V - avoids false triggering during normal -48 ±10 % regulation. |
Use Scenario: USB Type-C port VBUS line in portable medical monitors subjected to ESD per IEC 61000-4-2 ±15 kV contact discharge. IC Role / Device Role / Timing Role: Secondary TVS after primary ESD array, handling high-energy secondary transients. Use Value: Low clamping voltage (≤77.0 V) prevents latch-up in USB PD controllers rated for 28 V absolute max, ensuring bus reset recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ56A-E3/5B | Same SMB package, identical VBR (53.2–58.8 V), but rated for 400 W PPPM (vs. 600 W); RθJA = 110 °C/W | Limited to lower-energy transients (e.g., IEC 61000-4-4 level 3); unsuitable for automotive load dump | Select P6SMB56AHE3_A/I when 600 W surge handling or AEC-Q101 qualification is required. |
| 1.5SMC56A | Higher-power SMC package (7.1 mm × 6.2 mm), same VBR, 1500 W PPPM, RθJA = 60 °C/W | Requires larger PCB area; better for high-repetition surges or elevated ambient temperatures | Choose 1.5SMC56A only if board space allows and thermal derating demands exceed SMB capability. |
Compared with SMAJ56A-E3/5B and 1.5SMC56A, P6SMB56AHE3_A/I uniquely balances 600 W surge capacity, AEC-Q101 compliance, and compact SMB footprint - making it optimal for space-constrained automotive and industrial modules where both reliability and size matter.
Availability
P6SMB56AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power feeder protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB56AHE3_A/I 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 automotive-grade qualification.
The P6SMB Series targets high-reliability transient suppression in harsh environments, with design focus on AEC-Q101 compliance, low-profile surface-mount integration, and consistent clamping performance across temperature and surge repetition.
FAQ
What is the breakdown voltage tolerance for P6SMB56AHE3_A/I?
The P6SMB56AHE3_A/I has a specified breakdown voltage 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 VBR window ensures consistent clamping behavior across production lots and supports precise overvoltage margining in safety-critical designs like automotive body control modules. The P6SMB56AHE3_A/I datasheet confirms this range under "ELECTRICAL CHARACTERISTICS" table.
Is P6SMB56AHE3_A/I suitable for bidirectional signal line protection?
No, P6SMB56AHE3_A/I is strictly unidirectional - it conducts only in reverse bias above VBR and blocks forward current like a standard diode. For bidirectional protection (e.g., RS-485 or CAN bus), use the CA-suffixed variant P6SMB56CAHE3_A/I. The "A" suffix in P6SMB56AHE3_A/I explicitly denotes unidirectional configuration, and its cathode band marking confirms polarity-dependent operation.
Does P6SMB56AHE3_A/I meet automotive qualification standards?
Yes, P6SMB56AHE3_A/I is AEC-Q101 qualified, as indicated by the "HE3" suffix and confirmed in Vishay's ordering information and mechanical data sections. It undergoes stress testing for temperature cycling, humidity, mechanical shock, and surge endurance per AEC-Q101 Rev D, making it suitable for under-hood and chassis-mounted automotive applications including ADAS camera modules and powertrain sensors.
What is the maximum clamping voltage of P6SMB56AHE3_A/I under surge conditions?
The maximum clamping voltage (VC) of P6SMB56AHE3_A/I is 77.0 V at 7.8 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case transients. The P6SMB56AHE3_A/I datasheet lists this in the "ELECTRICAL CHARACTERISTICS" table for part number P6SMB56A.
Can P6SMB56AHE3_A/I be used in lead-free reflow processes?
Yes, P6SMB56AHE3_A/I is rated for lead-free reflow with a maximum peak temperature of 260 °C and meets MSL Level 1 per J-STD-020. Its matte tin-plated leads comply with J-STD-002 solderability requirements, enabling compatibility with standard SAC305 profiles without pre-baking. The "HE3" suffix confirms RoHS-compliant and AEC-Q101-qualified construction suitable for automotive manufacturing lines.
P6SMB56AHE3_A/I 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):
- 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_A/I FAQ
1.How can I place an order for P6SMB56AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56AHE3_A/I 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_A/I reliable?
The price and inventory of P6SMB56AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB56AHE3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB56AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56AHE3_A/I?
P6SMB56AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56AHE3_A/I 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_A/I?
For technical support, including P6SMB56AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56AHE3_A/I requirements.
6.How does Aetrix verify that P6SMB56AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB56AHE3_A/I 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_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB56AHE3_A/I?
All P6SMB56AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56AHE3_A/I, 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_A/I part is unused and in its original packaging.
Return procedure for P6SMB56AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56AHE3_A/I Tags
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