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Vishay General Semiconductor - Diodes Division P6SMB9.1AHM3/I
- Part No.:
- P6SMB9.1AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB9.1AHM3/I.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,634
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Product details
Overview
P6SMB9.1AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the 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 rails.
For engineers reviewing the P6SMB9.1AHM3/I datasheet, P6SMB9.1AHM3/I pinout, P6SMB9.1AHM3/I application, or P6SMB9.1AHM3/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and verified clamping performance under repetitive surge conditions.
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 and fast response (<1 ns), while the low incremental surge resistance enables effective energy diversion during transient events such as inductive switching or ESD.
The P6SMB9.1AHM3/I is rated for 150 °C maximum junction temperature and exhibits a +0.068 %/°C temperature coefficient of VBR, supporting stable operation across automotive-grade thermal ranges. Its 100 °C/W junction-to-ambient thermal resistance requires appropriate PCB copper pad layout (0.2" × 0.2") to sustain repetitive 600 W pulses at 0.01% duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 8.65 V / 9.55 V at 1.0 mA test current - defines precise avalanche onset range for reliable overvoltage triggering |
| VWM | 7.78 V - maximum continuous reverse operating voltage before leakage exceeds 50 μA |
| VC @ IPPM | 13.4 V at 44.8 A - clamped voltage seen by protected circuit during full 600 W transient event |
| PPPM | 600 W - peak pulse power handling per 10/1000 μs waveform, enabling robust surge immunity |
| IFSM | 100 A - non-repetitive forward surge rating (8.3 ms half-sine), supports input rectifier-stage protection |
| TJ max. | +150 °C - junction temperature limit compatible with under-hood automotive environments |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 2.2 mm height, optimized for automated placement |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; cathode indicated by band on one end; compliant with J-STD-002 solderability and JESD22-B102 whisker testing (Class 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (unidirectional) | Connected to ground or lower-potential rail; conducts during forward surge or bias conditions |
| Cathode | Avalanche clamping terminal (unidirectional) | Connected to protected line; initiates clamping when reverse voltage exceeds VWM/VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| Halogen-free & RoHS-compliant | HM3 suffix confirms compliance with environmental regulations and material safety standards |
| 600 W peak pulse power | Handles high-energy transients without degradation, suitable for 12 V/24 V vehicle power systems |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/60% RH - no bake required prior to reflow assembly |
| Glass passivated junction | Ensures low leakage (<50 μA at VWM) and long-term stability under thermal cycling |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply lines feeding engine control modules against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient spikes above 7.78 V to prevent damage to downstream regulators and microcontrollers. Use Value: Limits clamped voltage to 13.4 V at 44.8 A, ensuring safe operation of 16 V-rated components during ISO 7637-2 Pulse 5a events. |
Use Scenario: Shielding analog output lines of pressure or temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Fast-response voltage clamp placed between sensor output and ADC input to suppress ESD and cable-induced surges. Use Value: Sub-1 ns response time and 13.4 V clamping prevent ADC saturation and data corruption during 8 kV contact ESD events. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
|
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters powering USB-C PD devices. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing residual transients after primary-side MOV and secondary-side filtering. Use Value: 7.78 V VWM allows compatibility with 5–9 V regulated outputs while clamping to 13.4 V to safeguard USB-PD controllers. |
Use Scenario: Protecting -48 V telecom power distribution boards from lightning-induced surges on backplane feeds. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to system ground, placed at board edge to shunt incoming transients. Use Value: 600 W rating and low Rsurge enable dissipation of 10/1000 μs surges up to 44.8 A without failure in Telcordia GR-1089 environments. |
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 | Same SMB package, slightly lower VBR (8.5–9.4 V), identical 600 W rating, but not AEC-Q101 qualified | Lacks automotive qualification; suitable for commercial/industrial use only | Select SMAJ9.0A where AEC-Q101 is not required and tighter VBR tolerance is acceptable |
| 1.5SMC9.1A | Higher-power SMC package (1500 W), same VBR/VWM, larger footprint (7.11 × 6.22 mm vs. 4.57 × 3.94 mm) | Requires PCB layout change; preferred where higher single-pulse energy margin is needed | Choose 1.5SMC9.1A when system-level surge testing exceeds IEC 61000-4-5 Level 4 and SMB thermal limits are insufficient |
Compared with SMAJ9.0A and 1.5SMC9.1A, the P6SMB9.1AHM3/I uniquely combines AEC-Q101 qualification, halogen-free construction, and SMB footprint - making it the optimal choice for space-constrained automotive and industrial designs requiring certified reliability without board redesign.
Availability
P6SMB9.1AHM3/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC feed surge suppression requiring stable component supply, traceable sourcing, and long-term lifecycle support.
Supply support for P6SMB9.1AHM3/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 application-specific performance.
The P6SMB Series is part of Vishay's TRANSZORB® TVS platform, engineered for high-energy transient suppression in automotive, industrial, and communications infrastructure - prioritizing low clamping voltage, fast response, and qualification-grade consistency.
FAQ
What is the maximum clamping voltage of the P6SMB9.1AHM3/I under peak pulse conditions?
The P6SMB9.1AHM3/I has a maximum clamping voltage (VC) of 13.4 V when subjected to its rated peak pulse current of 44.8 A using the standard 10/1000 μs waveform. This value is measured at the device terminals under specified test conditions and represents the highest voltage the protected circuit will experience during a full 600 W transient event. The P6SMB9.1AHM3/I maintains this clamping performance consistently due to its glass-passivated junction and low dynamic impedance.
Is the P6SMB9.1AHM3/I qualified for automotive applications?
Yes, the P6SMB9.1AHM3/I is AEC-Q101 qualified, as confirmed by the HM3 suffix and documentation in Vishay's official datasheet (Document Number: 88370, Revision: 09-Jan-2024). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, validating its suitability for under-hood and chassis-mounted automotive electronics. The P6SMB9.1AHM3/I meets requirements for engine control units, body control modules, and ADAS power supplies.
What does the "HM3" suffix indicate in P6SMB9.1AHM3/I?
The "HM3" suffix in P6SMB9.1AHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Specifically, "H" indicates AEC-Q101 qualification, "M" signifies halogen-free molding compound, and "3" refers to the tape-and-reel packaging format (13-inch reel, 3200 units per reel, designated by "I" in the full part number). This suffix differentiates it from commercial-grade variants like "E3" or "M3", confirming compliance with automotive material and reliability standards.
How does the P6SMB9.1AHM3/I compare to bidirectional TVS diodes in the same series?
The P6SMB9.1AHM3/I is unidirectional, meaning it conducts only in reverse bias above VBR and blocks forward current up to ~3.5 V. Bidirectional variants (e.g., P6SMB9.1CA) provide symmetrical clamping in both directions and are used on AC or floating signal lines. The P6SMB9.1AHM3/I is selected for DC power rails where polarity is fixed and ground-referenced clamping is required - offering tighter VBR tolerance and lower leakage than equivalent bidirectional types.
What PCB layout guidance applies to the P6SMB9.1AHM3/I for optimal thermal performance?
For optimal thermal performance, the P6SMB9.1AHM3/I should be mounted on minimum recommended copper pads: 0.2" × 0.2" (5.0 mm × 5.0 mm) per terminal, as specified in the Vishay datasheet. This pad area supports the device's 100 °C/W junction-to-ambient thermal resistance and enables sustained 600 W pulse handling at 0.01% duty cycle. Avoid narrow traces or thermal reliefs between pads and internal planes, and ensure solder mask defined pads to maximize copper exposure for heat spreading. The P6SMB9.1AHM3/I's SMB footprint is compatible with standard SMT reflow profiles including peak temperatures up to 260 °C (MSL Level 1).
P6SMB9.1AHM3/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:
- Discontinued at Digi-Key
- 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/I FAQ
1.How can I place an order for P6SMB9.1AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB9.1AHM3/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 P6SMB9.1AHM3/I reliable?
The price and inventory of P6SMB9.1AHM3/I 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/I is usually 5 days.
3.What payment methods are accepted for P6SMB9.1AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB9.1AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB9.1AHM3/I?
P6SMB9.1AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB9.1AHM3/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 P6SMB9.1AHM3/I?
For technical support, including P6SMB9.1AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB9.1AHM3/I requirements.
6.How does Aetrix verify that P6SMB9.1AHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB9.1AHM3/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 P6SMB9.1AHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB9.1AHM3/I?
All P6SMB9.1AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB9.1AHM3/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 P6SMB9.1AHM3/I part is unused and in its original packaging.
Return procedure for P6SMB9.1AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB9.1AHM3/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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