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Vishay General Semiconductor - Diodes Division P6SMB91AHM3_A/H
- Part No.:
- P6SMB91AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB91AHM3_A/H.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,210
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Product details
Overview
P6SMB91AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 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 (IPPM), and 600 W peak pulse power (10/1000 µs waveform). It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in industrial and automotive electronics.
For engineers reviewing the P6SMB91AHM3_A/H datasheet, P6SMB91AHM3_A/H pinout, P6SMB91AHM3_A/H application, or P6SMB91AHM3_A/H equivalent, key selection criteria include its AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, 77.8 V stand-off voltage (VWM), <1 µA reverse leakage at VWM, and MSL Level 1 moisture sensitivity rating.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, designed to shunt transient energy away from sensitive downstream circuitry by entering avalanche conduction when reverse voltage exceeds VBR. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance.
It delivers 600 W peak pulse power handling under standardized 10/1000 µs waveform conditions at ≤0.01% duty cycle, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation up to TJ = +150 °C in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 86.5 V / 95.5 V at 1.0 mA test current - defines precise avalanche onset range for predictable clamping behavior |
| VWM | 77.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 125 V at 4.8 A - clamped voltage seen by protected circuit during worst-case 600 W transient |
| IPPM | 4.8 A - peak surge current capability under 10/1000 µs waveform, derated above 25 °C ambient |
| PPPM | 600 W - transient energy absorption capacity per single pulse, critical for inductive load suppression |
| TJ max. | +150 °C - maximum junction temperature, supporting operation in under-hood automotive and industrial environments |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.220" × 0.130" footprint and MSL Level 1 rating |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, compliant with J-STD-002 and JESD 22-B102 solderability standards. Cathode indicated by band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential node in unidirectional protection configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., signal or power rail); conducts transient current to ground when VREV > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per stress test requirements |
| Halogen-free & RoHS-compliant | Meets environmental compliance mandates for industrial and automotive supply chains without compromising surge robustness |
| 600 W peak pulse power | Withstands high-energy transients from relay coil de-energization or motor commutation without degradation |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage stress on protected ICs-critical for 3.3 V or 5 V logic interfaces |
| MSL Level 1 (260 °C peak reflow) | Enables standard SMT assembly without pre-baking, reducing manufacturing complexity and cost |
Applications
| Automotive Power Line Protection | Industrial Sensor Signal Conditioning |
|---|---|
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 surges exceeding 77.8 V. Use Value: Limits voltage excursion to ≤125 V during 4.8 A transients, preventing damage to MCU power inputs and CAN transceivers. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) from ESD and field-induced spikes in factory automation. IC Role / Device Role / Timing Role: TVS connected across signal and return path to absorb fast-rising transients before reaching ADC front-end. Use Value: Sub-µA leakage at 77.8 V ensures no loading of precision current sources; 125 V clamping preserves op-amp input stage integrity. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
Use Scenario: Safeguarding AC/DC adapter primary-side rectifier and controller ICs from lightning-induced surges on mains input. IC Role / Device Role / Timing Role: Mounted after bridge rectifier to suppress differential-mode transients before bulk capacitor. Use Value: 600 W pulse rating handles IEC 61000-4-5 Level 3 surges; SMB package allows dense layout near entry point. |
Use Scenario: Protecting PoE-powered equipment (e.g., IP cameras) from induced surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: Unidirectional TVS placed between DC+ and ground to clamp positive-going transients on powered device side. Use Value: 77.8 V VWM accommodates 48 V nominal + 20 % tolerance while maintaining margin below 125 V clamping limit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ90A | Same VBR range (85.5–94.5 V), but lower PPPM = 400 W and higher VC = 129 V at 3.5 A | Limited to lower-energy transients; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and 600 W headroom |
| 1.5SMC91A | Same VBR (86.5–95.5 V) and PPPM = 1500 W, but larger SMC (DO-214AB) package and higher VC = 125 V at 12 A | Requires more PCB area; suited for higher-current surge events | Choose when system-level surge testing exceeds 600 W and board space permits larger footprint |
Compared with SMAJ90A and 1.5SMC91A, P6SMB91AHM3_A/H uniquely balances AEC-Q101 qualification, SMB footprint constraints, and precise 600 W/125 V clamping performance-making it optimal for space-constrained automotive and industrial modules where reliability and manufacturability are co-prioritized.
Availability
P6SMB91AHM3_A/H is available at Aetrix Electronics and suitable for automotive control units, industrial sensor nodes, telecom power interfaces, and consumer power adapters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB91AHM3_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 designs and manufactures discrete semiconductors including diodes, MOSFETs, and optoelectronics, with emphasis on high-reliability, application-specific performance and global regulatory compliance.
The P6SMB Series targets board-level transient protection in automotive, industrial, and communications systems, delivering standardized 600 W surge capability in compact SMB packages with AEC-Q101 and halogen-free options.
FAQ
What is the clamping voltage of P6SMB91AHM3_A/H at its rated peak pulse current?
The P6SMB91AHM3_A/H has a maximum clamping voltage (VC) of 125 V at its rated peak pulse current (IPPM) of 4.8 A under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88370 and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB91AHM3_A/H maintains this clamping performance across its specified operating temperature range.
Is P6SMB91AHM3_A/H suitable for automotive applications?
Yes, P6SMB91AHM3_A/H is AEC-Q101 qualified, as confirmed by the "HM3" suffix denoting halogen-free, RoHS-compliant, and automotive-grade construction. It meets stress test requirements for temperature cycling, high-temperature reverse bias, and surge endurance-making P6SMB91AHM3_A/H appropriate for engine control units, body electronics, and ADAS sensor modules where reliability under harsh conditions is mandatory.
What does the "_A/H" suffix in P6SMB91AHM3_A/H indicate?
The "_A/H" suffix in P6SMB91AHM3_A/H specifies packaging and revision: "A" denotes the revision code per Vishay's ordering nomenclature, and "H" indicates 7-inch diameter plastic tape-and-reel delivery (750 units per reel). This matches the ordering format shown in Table on page 3 of Vishay document 88370, confirming P6SMB91AHM3_A/H is supplied in standard SMT-compatible packaging.
How does the thermal resistance of P6SMB91AHM3_A/H affect PCB layout?
P6SMB91AHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W. To maintain safe operation at full 600 W pulse loads, PCB copper pads must follow the minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) recommendation per terminal in Vishay document 88370. Deviating from this layout risks exceeding the +150 °C maximum junction temperature during repetitive surges.
What is the reverse leakage current of P6SMB91AHM3_A/H at its stand-off voltage?
At its maximum stand-off voltage (VWM) of 77.8 V and ambient temperature of 25 °C, the P6SMB91AHM3_A/H exhibits a maximum reverse leakage current (ID) of 1.0 µA. This ultra-low leakage ensures minimal power loss and signal interference in always-on circuits such as sensor bias networks or standby power rails-confirming P6SMB91AHM3_A/H suitability for precision analog and low-power embedded systems.
P6SMB91AHM3_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):
- 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:
- 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)
P6SMB91AHM3_A/H FAQ
1.How can I place an order for P6SMB91AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB91AHM3_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 P6SMB91AHM3_A/H reliable?
The price and inventory of P6SMB91AHM3_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 P6SMB91AHM3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB91AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB91AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB91AHM3_A/H?
P6SMB91AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB91AHM3_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 P6SMB91AHM3_A/H?
For technical support, including P6SMB91AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB91AHM3_A/H requirements.
6.How does Aetrix verify that P6SMB91AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB91AHM3_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 P6SMB91AHM3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB91AHM3_A/H?
All P6SMB91AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB91AHM3_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 P6SMB91AHM3_A/H part is unused and in its original packaging.
Return procedure for P6SMB91AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB91AHM3_A/H Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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