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Vishay General Semiconductor - Diodes Division P6SMB9.1AHM3_B/I
- Part No.:
- P6SMB9.1AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB9.1AHM3_B/I.pdf
- Description:
- 600W,9.1V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,112
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Product details
Overview
P6SMB9.1AHM3_B/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 600 W peak pulse power with 10/1000 μs waveform, 7.78 V stand-off voltage (VWM), 13.4 V clamping voltage (VC) at 44.8 A peak pulse current (IPPM), and designed for overvoltage protection of MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics.
For engineers reviewing the P6SMB9.1AHM3_B/I datasheet, P6SMB9.1AHM3_B/I pinout, P6SMB9.1AHM3_B/I application, or P6SMB9.1AHM3_B/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), polarity marking convention, and real-world use cases in ESD/surge-prone subsystems - all aligned to Vishay Document #88370 (Rev. 09-Jan-2024).
Technical Context
This device operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 8.65–9.55 V breakdown range (VBR at 1.0 mA test current). Its glass-passivated junction ensures stable clamping performance under repetitive transients, with low incremental surge resistance enabling rapid energy diversion.
Designed for surface-mount assembly on 0.2" × 0.2" copper pads per terminal, it meets J-STD-020 MSL Level 1 (peak reflow ≤ 260 °C) and supports automotive-grade reliability via AEC-Q101 qualification (HM3_B suffix denotes halogen-free, RoHS-compliant, AEC-Q101 qualified variant).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 7.78 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 8.65–9.55 V at 1.0 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transient events. |
| VC (Clamping) | 13.4 V at IPPM = 44.8 A - Peak voltage seen by protected circuit during 10/1000 μs surge; limits stress on downstream components. |
| PPPM | 600 W - Peak pulse power handling capability with 10/1000 μs waveform; supports high-energy lightning/inductive-switching surges. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard PCB pad layout; informs derating above TA = 25 °C. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial ambient environments. |
| ID (Leakage) | 50 μA max at VWM - Low reverse leakage preserves system efficiency and avoids false triggering in low-power circuits. |
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 types.
| 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 path / Surge return | Banded end; sinks transient current to ground or rail during overvoltage event; must be routed with low-inductance path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3_B) | Validated for automotive applications including engine control units and ADAS sensor interfaces requiring long-term reliability under thermal cycling and vibration. |
| 600 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surge events (4 kV line-to-line) without degradation when properly mounted. |
| Glass passivated junction | Ensures stable VBR and low leakage across temperature (-65 °C to +150 °C); eliminates risk of moisture-induced parameter drift. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles; no pre-baking required prior to assembly. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-20; supports sustainability requirements for global OEM supply chains. |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed microcontroller inputs and CAN transceiver bias rails against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between protected node and chassis ground to shunt surge energy away from sensitive logic. Use Value: Clamps to 13.4 V during 44.8 A transients, preventing latch-up or gate oxide damage in downstream 5 V/3.3 V ICs. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation PLC modules from motor drive noise coupling. IC Role / Device Role / Timing Role: Standoff protection element on 4–20 mA current loop or 0–10 V analog output line, referenced to system ground. Use Value: Maintains 7.78 V operating margin while limiting induced transients to ≤13.4 V, preserving ADC accuracy and signal integrity. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
|
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters after rectification, guarding synchronous rectifier MOSFETs. IC Role / Device Role / Timing Role: Fast-response unidirectional clamp across output capacitor terminals to absorb flyback spikes. Use Value: Responds in <1 ps to limit voltage overshoot to 13.4 V, avoiding MOSFET avalanche failure during dynamic load steps. |
Use Scenario: Front-end protection of -48 V telecom power distribution boards against accidental hot-swap transients and lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on input bus, oriented anode-to-rail to clamp positive excursions relative to common ground. Use Value: Handles 600 W pulses without degradation, maintaining system uptime in central office and remote radio head deployments. |
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-E3/5B | Same SMB package, 9.0 V VWM, 14.4 V VC at 41.7 A; non-AEC-Q101, commercial-grade only. | Lacks automotive qualification; suitable for consumer/industrial designs where AEC compliance is not mandated. | Select if cost sensitivity outweighs automotive reliability requirements and AEC-Q101 testing is unnecessary. |
| 1.5SMC9.0A | Higher-power SMC package (1500 W PPPM), 9.0 V VWM, 14.4 V VC; larger footprint, higher RθJA (50 °C/W). | Used where higher surge energy absorption is needed but board space allows larger SMC outline. | Choose when system-level surge testing exceeds 600 W and thermal design accommodates larger package size. |
Compared with SMAJ9.0A-E3/5B, P6SMB9.1AHM3_B/I offers AEC-Q101 validation and tighter VBR tolerance (±5.5 % vs ±6.7 %); versus 1.5SMC9.0A, it trades peak power for smaller SMB footprint and lower mounting height - critical for space-constrained automotive ECUs.
Availability
P6SMB9.1AHM3_B/I is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interface protection, and telecom DC feed applications requiring stable component supply, halogen-free compliance, and AEC-Q101 traceability.
Supply support for P6SMB9.1AHM3_B/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, power efficiency, and automotive-grade validation.
The P6SMB Series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for robust transient suppression in harsh environments - including under-hood automotive, industrial motor drives, and telecom infrastructure - where fast response, stable clamping, and long-term parametric stability are mandatory.
FAQ
What is the clamping voltage of the P6SMB9.1AHM3_B/I under maximum rated surge conditions?
The P6SMB9.1AHM3_B/I has a maximum clamping voltage (VC) of 13.4 V at 44.8 A peak pulse current (IPPM), measured with a 10/1000 μs waveform. This value is guaranteed per Vishay Document #88370 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The P6SMB9.1AHM3_B/I maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C) due to its glass-passivated junction structure.
Is the P6SMB9.1AHM3_B/I qualified for automotive applications?
Yes, the P6SMB9.1AHM3_B/I is AEC-Q101 qualified, as confirmed by its HM3_B suffix per Vishay's ordering nomenclature guide. This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - validating suitability for automotive powertrain, body electronics, and ADAS subsystems. The P6SMB9.1AHM3_B/I is halogen-free and RoHS-compliant, meeting Tier 1 OEM material requirements.
What does the "B" and "I" suffix in P6SMB9.1AHM3_B/I signify?
In P6SMB9.1AHM3_B/I, "B" indicates AEC-Q101 qualification for the 6.8 V to 220 V unidirectional/bidirectional voltage range, while "I" specifies packaging in 13-inch diameter plastic tape and reel with 3200 units per reel. The "HM3" portion denotes halogen-free, RoHS-compliant construction. This full suffix confirms that the P6SMB9.1AHM3_B/I meets automotive reliability standards and ships in high-volume surface-mount packaging compatible with automated pick-and-place equipment.
How does the thermal performance of P6SMB9.1AHM3_B/I compare to similar SMB TVS diodes?
The P6SMB9.1AHM3_B/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal - matching industry-standard SMB thermal benchmarks. This value enables predictable derating above 25 °C ambient, with 50 % power reduction at ~75 °C case temperature. Unlike some competitors, the P6SMB9.1AHM3_B/I sustains this RθJA across its full voltage range due to consistent die attach and molding compound formulation.
Can P6SMB9.1AHM3_B/I replace older P6SMB9.1A variants in existing designs?
Yes, the P6SMB9.1AHM3_B/I is a direct replacement for legacy P6SMB9.1A parts in terms of electrical specs, package dimensions, and pinout - with added benefits of AEC-Q101 qualification, halogen-free materials, and enhanced moisture sensitivity level (MSL Level 1). No PCB layout changes are required, and the P6SMB9.1AHM3_B/I maintains identical VWM (7.78 V), VBR (8.65–9.55 V), and VC (13.4 V) values, ensuring drop-in compatibility in both new and legacy designs.
P6SMB9.1AHM3_B/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:
- Active
- 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_B/I FAQ
1.How can I place an order for P6SMB9.1AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB9.1AHM3_B/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_B/I reliable?
The price and inventory of P6SMB9.1AHM3_B/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_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB9.1AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB9.1AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB9.1AHM3_B/I?
P6SMB9.1AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB9.1AHM3_B/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_B/I?
For technical support, including P6SMB9.1AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB9.1AHM3_B/I requirements.
6.How does Aetrix verify that P6SMB9.1AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB9.1AHM3_B/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_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB9.1AHM3_B/I?
All P6SMB9.1AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB9.1AHM3_B/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_B/I part is unused and in its original packaging.
Return procedure for P6SMB9.1AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB9.1AHM3_B/I Tags
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