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Vishay General Semiconductor - Diodes Division P6SMB9.1AHM3_A/H
- Part No.:
- P6SMB9.1AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB9.1AHM3_A/H.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,482
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Product details
Overview
P6SMB9.1AHM3_A/H 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 a 9.1 V breakdown voltage (VBR = 8.65–9.55 V at IT = 1.0 mA), 7.78 V stand-off voltage (VWM), 13.4 V maximum clamping voltage (VC) at 44.8 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 P6SMB9.1AHM3_A/H datasheet, P6SMB9.1AHM3_A/H pinout, P6SMB9.1AHM3_A/H application, or P6SMB9.1AHM3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, low incremental surge resistance, and compatibility with automated SMT assembly on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a voltage-clamping protection device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable leakage performance and fast response time (<1 ns), while the SMB package provides mechanical robustness and thermal dissipation capability (RθJA = 100 °C/W).
The P6SMB9.1AHM3_A/H is rated for repetitive 10/1000 µs surges at 0.01% duty cycle and supports peak forward surge current of 100 A (8.3 ms half-sine). It is qualified to AEC-Q101 for automotive applications and meets J-STD-020 MSL Level 1 with 260 °C reflow peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 8.65–9.55 V at 1.0 mA test current - defines precise avalanche onset for reliable overvoltage triggering |
| Stand-off Voltage VWM | 7.78 V - maximum continuous reverse operating voltage before leakage exceeds 50 µA |
| Clamping Voltage VC | 13.4 V at 44.8 A IPPM - limits transient voltage seen by protected downstream circuitry |
| Peak Pulse Power PPPM | 600 W (10/1000 µs waveform) - sustains high-energy ESD and lightning-induced surges without failure |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.220" × 0.130" footprint and matte tin-plated leads |
| AEC-Q101 Qualified | Yes (HM3 suffix) - validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| Thermal Resistance RθJA | 100 °C/W - enables thermal design margin when mounted on 0.2" × 0.2" copper pads per JEDEC standard |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); weight: 0.106 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to lower-potential side (e.g., ground or return path) during normal operation; defines polarity orientation |
| Cathode | Avalanche conduction terminal / Clamping output node | Connected to protected line (e.g., 12 V rail or signal trace); conducts surge current to anode when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against ISO 7637-2 pulse 1/2a/5a and IEC 61000-4-5 surge events in automotive ECUs |
| Glass passivated junction | Ensures stable leakage current (<50 µA at VWM) and long-term reliability under thermal cycling and humidity stress |
| AEC-Q101 qualified (HM3) | Validated for automotive under-hood and infotainment applications requiring extended temperature range (−65 °C to +150 °C) |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow soldering without popcorn cracking or delamination in high-volume SMT production |
| Halogen-free & RoHS-compliant | Fulfills environmental compliance requirements for EU, China RoHS, and automotive OEM material declarations |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs against load dump and alternator transients in body control modules. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between VIN and GND, responding within <1 ns to suppress spikes above 13.4 V. Use Value: Prevents latch-up or permanent damage to MCU LDO regulators by limiting transient voltage to safe levels during ISO 16750-2 tests. |
Use Scenario: Safeguarding analog outputs of pressure or temperature sensors connected to PLC analog input cards. IC Role / Device Role / Timing Role: Standoff-clamp TVS on 4–20 mA loop or 0–10 V signal line, absorbing induced surges from nearby motor switching. Use Value: Maintains signal integrity and prevents ADC saturation or op-amp input stage damage during field wiring faults or EFT bursts. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters powering USB-C PD devices or smart home hubs. IC Role / Device Role / Timing Role: Fast-acting unidirectional clamp on +5 V or +9 V output rail, triggered by transformer flyback overshoot or regulator fault. Use Value: Eliminates need for secondary crowbar circuits while meeting UL 62368-1 transient immunity requirements. |
Use Scenario: DC feed protection in PoE-powered access points or base station remote radios operating from −48 V telecom supplies. IC Role / Device Role / Timing Role: Reverse-biased TVS on −48 V line referenced to chassis ground, clamping negative-going surges from lightning coupling. Use Value: Extends mean time between failures (MTBF) of Ethernet PHYs and DC/DC converters subjected to repeated 10/1000 µs surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | Lower PPPM (400 W), same SMB package, VBR = 9.0–10.0 V, non-AEC-Q101 | Not qualified for automotive; suitable only for commercial-grade consumer or industrial equipment | Select when cost sensitivity outweighs automotive qualification and 600 W surge margin is not required |
| 1.5SMC9.1A | Higher package thermal resistance (RθJA ≈ 125 °C/W), same VBR/VC, SMC (DO-214AB) package - 20% larger footprint | Requires PCB layout revision due to larger 7.11 mm × 6.22 mm outline; better for high-reliability industrial use with heatsinking | Choose when higher thermal mass is needed and board space allows SMC footprint |
Compared with SMAJ9.0A and 1.5SMC9.1A, the P6SMB9.1AHM3_A/H delivers AEC-Q101 qualification, 600 W surge capacity in compact SMB, and halogen-free compliance - making it the optimal choice for automotive front-end protection where space, reliability, and regulatory alignment are critical.
Availability
P6SMB9.1AHM3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor signal conditioning, and telecom DC power feed protection requiring stable component supply across multi-year production cycles.
Supply support for P6SMB9.1AHM3_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 is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on high-reliability and automotive-grade solutions.
The P6SMB Series was developed specifically for robust, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications demanding AEC-Q101 qualification, high surge immunity, and automated assembly compatibility.
FAQ
What is the exact breakdown voltage range for P6SMB9.1AHM3_A/H?
The P6SMB9.1AHM3_A/H has a guaranteed breakdown voltage (VBR) range of 8.65 V to 9.55 V at a test current of 1.0 mA, measured per ANSI/IEEE C62.35. This tight tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage protection design in safety-critical systems like automotive body controllers.
Is P6SMB9.1AHM3_A/H suitable for automotive applications?
Yes, the P6SMB9.1AHM3_A/H is AEC-Q101 qualified (denoted by the HM3 suffix), meaning it has passed rigorous stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing. It is explicitly intended for automotive power rail and signal line protection in engine control units, ADAS sensors, and infotainment systems.
What does the "_A/H" suffix in P6SMB9.1AHM3_A/H indicate?
The "_A/H" suffix in P6SMB9.1AHM3_A/H specifies packaging and reel configuration: "A" denotes the standard revision level per Vishay's document control, and "H" indicates 7-inch plastic tape-and-reel delivery with 750 units per reel. This matches Vishay's ordering code convention for P6SMB9.1AHM3_B/H and confirms commercial-grade halogen-free compliance.
How does the clamping voltage of P6SMB9.1AHM3_A/H compare to its stand-off voltage?
The P6SMB9.1AHM3_A/H has a stand-off voltage (VWM) of 7.78 V and a maximum clamping voltage (VC) of 13.4 V at 44.8 A peak pulse current. This 5.62 V differential ensures sufficient margin between normal operation and clamping onset, preventing false triggering while still limiting transients to a safe level for downstream 12 V logic or analog components.
Can P6SMB9.1AHM3_A/H be used in bidirectional configurations?
No, the P6SMB9.1AHM3_A/H is a unidirectional TVS diode, identified by its cathode band marking and specified electrical characteristics for single-polarity operation. For bidirectional protection, Vishay offers the P6SMB9.1CA variant - which shares the same VBR and VC ratings but supports symmetrical clamping in both directions.
P6SMB9.1AHM3_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):
- 7.78V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 44.8A
- 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)
P6SMB9.1AHM3_A/H FAQ
1.How can I place an order for P6SMB9.1AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB9.1AHM3_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 P6SMB9.1AHM3_A/H reliable?
The price and inventory of P6SMB9.1AHM3_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 P6SMB9.1AHM3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB9.1AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB9.1AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB9.1AHM3_A/H?
P6SMB9.1AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB9.1AHM3_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 P6SMB9.1AHM3_A/H?
For technical support, including P6SMB9.1AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB9.1AHM3_A/H requirements.
6.How does Aetrix verify that P6SMB9.1AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB9.1AHM3_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 P6SMB9.1AHM3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB9.1AHM3_A/H?
All P6SMB9.1AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB9.1AHM3_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 P6SMB9.1AHM3_A/H part is unused and in its original packaging.
Return procedure for P6SMB9.1AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB9.1AHM3_A/H Tags
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Diodes Incorporated
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Diodes Incorporated
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