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Vishay General Semiconductor - Diodes Division P6SMB91AHE3_A/I
- Part No.:
- P6SMB91AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB91AHE3_A/I.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,259
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Product details
Overview
P6SMB91AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on power and signal lines. It features a 91 V breakdown voltage (VBR = 86.5–95.5 V at IT = 1.0 mA), 125 V maximum clamping voltage (VC) at 4.8 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the P6SMB91AHE3_A/I datasheet, P6SMB91AHE3_A/I pinout, P6SMB91AHE3_A/I application, or P6SMB91AHE3_A/I equivalent, key selection criteria include its AEC-Q101 qualification, SMB (DO-214AA) package compatibility, unidirectional polarity with cathode band marking, and thermal resistance (RθJA = 100 °C/W) under standard PCB pad layout.
Technical Context
This TVS diode operates as a voltage-clamping protection device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold (VBR). Its low incremental surge resistance and fast response time ensure effective suppression of transient energy induced by inductive switching or ESD events.
Designed for surface-mount assembly on 0.2" × 0.2" copper pads per terminal, it delivers 600 W peak pulse power handling with 0.01% duty cycle, derated above TA = 25 °C, and supports continuous power dissipation of 5.0 W at TA = 50 °C on infinite heatsink.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 86.5 V / 95.5 V at IT = 1.0 mA - defines precise avalanche onset range for reliable overvoltage triggering |
| VWM | 77.8 V - maximum steady-state reverse voltage before leakage exceeds 1.0 μA, ensuring no false conduction during normal operation |
| VC @ IPPM | 125 V at 4.8 A - clamping voltage under full 600 W transient, limiting downstream component stress |
| IPPM | 4.8 A - peak pulse current supported with 10/1000 μs waveform, directly tied to PCB pad thermal design |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance under standard mounting, critical for thermal margin estimation |
| TJ max. | +150 °C - maximum operating junction temperature, enabling use in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
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; cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side of protected line; establishes polarity-dependent clamping behavior |
| Cathode | Avalanche conduction node / Clamping output | Marked end; carries transient current to ground or rail during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against ISO 7637-2 Pulse 1/2a/5a transients in 12 V automotive systems |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive electronics including engine control units and ADAS sensor interfaces |
| Low RθJA = 100 °C/W | Supports stable operation up to +125 °C ambient when mounted on minimum recommended 0.2" × 0.2" copper pads |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without moisture sensitivity concerns |
| Glass passivated junction | Ensures long-term stability of VBR and leakage performance across temperature and life cycles |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply rails in body control modules from load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery input and DC/DC converter input stage. Use Value: Limits transient voltage to ≤125 V, preventing damage to downstream 40 V-rated buck controllers and CAN transceivers. |
Use Scenario: Shielding analog outputs of pressure sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Standoff protector on 0–10 V output line, absorbing ESD and cable discharge events. Use Value: Maintains signal integrity below 10 V nominal range while surviving ≥8 kV contact ESD per IEC 61000-4-2. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Safeguarding -48 V telecom rectifier outputs against lightning-induced surges on distribution backplanes. IC Role / Device Role / Timing Role: Primary clamping element on negative rail, coordinated with upstream MOVs for staged protection. Use Value: Responds in <1 ps to clamp transients within 125 V, preserving -48 V system regulation and hot-swap controller integrity. |
Use Scenario: Suppressing flyback voltage from brushed DC motors in smart home appliances (e.g., vacuum cleaners). IC Role / Device Role / Timing Role: Freewheeling path limiter across motor terminals, reducing EMI and MOSFET drain stress. Use Value: Absorbs 600 W inductive energy pulses without degradation, extending MOSFET lifetime and meeting CISPR 14-1 emissions limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ90A-E3/5B | Same SMB package, VBR = 100–111 V, VC = 146 V @ 4.1 A, 400 W rating | Lower peak power and higher clamping voltage reduce margin for high-energy transients | Select when cost sensitivity outweighs need for full 600 W capability and tighter clamping |
| 1.5SMC91A | Same VBR/VC specs but SMC (DO-214AB) package - 2.5 mm wider, higher thermal mass | Requires PCB layout change; better for >5.0 W continuous dissipation but less space-efficient | Choose only if existing design uses SMC footprint or requires enhanced thermal performance beyond SMB limits |
Compared with SMAJ90A-E3/5B and 1.5SMC91A, P6SMB91AHE3_A/I uniquely combines AEC-Q101 qualification, 600 W rating, and SMB footprint - making it optimal for space-constrained automotive and industrial designs requiring certified reliability and high transient immunity.
Availability
P6SMB91AHE3_A/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power inputs, and consumer appliance motor drives requiring stable component supply with full traceability and lifecycle support.
Supply support for P6SMB91AHE3_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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The P6SMB Series was engineered for high-reliability transient suppression in harsh environments - particularly targeting automotive, industrial, and telecom applications where AEC-Q101 compliance and repeatable clamping behavior are mandatory.
FAQ
What is the breakdown voltage tolerance of P6SMB91AHE3_A/I?
The P6SMB91AHE3_A/I has a specified breakdown voltage range of 86.5 V to 95.5 V at test current IT = 1.0 mA, representing ±5% tolerance around the nominal 91 V rating. This tight VBR window ensures consistent clamping onset across production lots and supports predictable circuit protection margins in designs using this device.
Is P6SMB91AHE3_A/I suitable for bidirectional transient protection?
No, P6SMB91AHE3_A/I is a unidirectional TVS diode - its cathode band marking and internal structure support clamping only in reverse bias. For bidirectional protection, Vishay offers the P6SMB91CA variant. Using P6SMB91AHE3_A/I in AC or floating signal paths without external polarity control may result in forward conduction and failure.
Does P6SMB91AHE3_A/I meet automotive qualification standards?
Yes, the HE3 suffix in P6SMB91AHE3_A/I explicitly denotes AEC-Q101 qualification. This includes stress testing for temperature cycling, high-temperature reverse bias (HTRB), and ESD robustness - confirming suitability for automotive powertrain, chassis, and body electronics where reliability under thermal and electrical stress is critical.
What is the maximum clamping voltage of P6SMB91AHE3_A/I under surge conditions?
The maximum clamping voltage of P6SMB91AHE3_A/I is 125 V, measured at its rated peak pulse current of 4.8 A with a 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case transients and must be compared against the absolute maximum ratings of downstream components like MOSFETs or regulators.
How does the SMB package of P6SMB91AHE3_A/I affect thermal performance?
The SMB (DO-214AA) package of P6SMB91AHE3_A/I delivers RθJA = 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. This thermal resistance determines junction temperature rise under sustained power dissipation - for example, at 5.0 W continuous load, ΔTJ ≈ 500 °C, so derating or pulsed operation is required to stay within the +150 °C TJ max limit.
P6SMB91AHE3_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):
- 77.8V
- Voltage - Breakdown (Min):
- 86.5V
- Voltage - Clamping (Max) @ Ipp:
- 125V
- Current - Peak Pulse (10/1000µs):
- 4.8A
- 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)
P6SMB91AHE3_A/I FAQ
1.How can I place an order for P6SMB91AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB91AHE3_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 P6SMB91AHE3_A/I reliable?
The price and inventory of P6SMB91AHE3_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 P6SMB91AHE3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB91AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB91AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB91AHE3_A/I?
P6SMB91AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB91AHE3_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 P6SMB91AHE3_A/I?
For technical support, including P6SMB91AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB91AHE3_A/I requirements.
6.How does Aetrix verify that P6SMB91AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB91AHE3_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 P6SMB91AHE3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB91AHE3_A/I?
All P6SMB91AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB91AHE3_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 P6SMB91AHE3_A/I part is unused and in its original packaging.
Return procedure for P6SMB91AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB91AHE3_A/I Tags
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