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Vishay General Semiconductor - Diodes Division P6SMB9.1AHM3_B/H
- Part No.:
- P6SMB9.1AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB9.1AHM3_B/H.pdf
- Description:
- 600W,9.1V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,096
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Product details
Overview
P6SMB9.1AHM3_B/H 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 (10/1000 μs), 7.78 V stand-off voltage (VWM), and 13.4 V maximum clamping voltage (VC) at 44.8 A peak pulse current. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in automotive and industrial power electronics.
For engineers reviewing the P6SMB9.1AHM3_B/H datasheet, P6SMB9.1AHM3_B/H pinout, P6SMB9.1AHM3_B/H application, or P6SMB9.1AHM3_B/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), polarity marking convention, and real-world protection use cases - all confirmed from Vishay's official P6SMB series documentation (Doc #88370, Rev 09-Jan-2024).
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, designed to shunt transient energy above 7.78 V while maintaining low leakage (<50 μA at VWM). Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), enabling effective suppression of ESD (IEC 61000-4-2) and lightning-induced surges (IEC 61000-4-5).
Rated for 150 °C maximum junction temperature and qualified to AEC-Q101 (automotive grade), P6SMB9.1AHM3_B/H supports high-reliability applications where thermal derating per Fig. 2 and PCB copper pad layout compliance (0.2" × 0.2") are critical for sustained 600 W pulse handling under repetitive 0.01% duty cycle conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 7.78 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown) | 8.65–9.55 V at 1.0 mA - Confirmed breakdown range ensures reliable turn-on during transients without premature conduction. |
| VC (Clamping) | 13.4 V at 44.8 A - Peak voltage seen by protected circuit during 10/1000 μs surge; determines downstream component stress. |
| PPPM | 600 W - Peak pulse power rating with 10/1000 μs waveform; defines transient energy absorption capability. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance; requires minimum 0.2" × 0.2" copper pads for rated power dissipation. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Cathode identified by black band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal (reverse-biased mode) | Connected to protected line; conducts surge current toward cathode when transient exceeds VWM. |
| Cathode | Current exit terminal (reverse-biased mode) | Marked with black band; tied to ground or lower-potential rail to complete clamping path. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges without degradation. |
| Glass passivated junction | Ensures stable VBR tolerance (±5%) and long-term reliability under thermal cycling and humidity stress. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without moisture-related popcorning or delamination. |
| AEC-Q101 qualification (HM3 suffix) | Validates suitability for automotive powertrain, body control, and ADAS modules requiring zero-failure field performance. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, reducing stress on downstream MOSFET gate oxides. |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump spikes (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 7.78 V. Use Value: Limits rail voltage to ≤13.4 V during 600 W transients, preventing damage to 16 V-rated LDOs and microcontrollers. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in PLC I/O modules from field-wiring induced surges. IC Role / Device Role / Timing Role: TVS mounted at connector interface to divert fast transients before reaching op-amp input stages. Use Value: Clamps sub-100 ns ESD events to <13.4 V, preserving 12-bit ADC accuracy and avoiding latch-up in signal-conditioning ICs. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
|
Use Scenario: Safeguarding primary-side controllers in AC/DC adapters against mains-borne surges (IEC 61000-4-4 EFT). IC Role / Device Role / Timing Role: Unidirectional TVS across bulk capacitor input to absorb repetitive 5/50 ns bursts. Use Value: Maintains VWM margin over 9 V rectified input, ensuring no conduction during normal operation while reacting in <1 ns. |
Use Scenario: Protecting -48 V telecom power distribution boards from hot-swap and cable discharge events. IC Role / Device Role / Timing Role: TVS installed on each feed line to ground, leveraging low VC to preserve -48 V rail integrity. Use Value: Delivers 13.4 V clamping referenced to -48 V, limiting absolute rail excursion to -34.6 V and preventing FET gate overvoltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A-E3/52 | 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 without AEC requirements. | Select when cost sensitivity outweighs automotive reliability needs and clamping voltage margin allows 14.4 V. |
| 1.5SMC9.1A | Higher-power SMC package (1500 W), same 9.1 V nominal breakdown, 13.4 V VC, but larger footprint and higher RθJA (60 °C/W). | Used where surge energy exceeds 600 W or board space permits larger package for improved thermal margin. | Choose when system-level surge testing exceeds P6SMB9.1AHM3_B/H's 600 W rating or thermal design favors SMC mounting. |
Compared with SMAJ9.0A-E3/52, P6SMB9.1AHM3_B/H provides AEC-Q101 validation and tighter VBR tolerance; versus 1.5SMC9.1A, it offers identical clamping performance in a smaller SMB footprint but with lower absolute power handling - making it optimal for space-constrained automotive modules needing certified reliability.
Availability
P6SMB9.1AHM3_B/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power distribution systems requiring stable component supply, AEC-Q101 compliance, and repeatable 600 W transient suppression performance.
Supply support for P6SMB9.1AHM3_B/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and high-volume manufacturability.
The P6SMB series targets cost-sensitive yet reliability-critical transient protection in automotive, industrial, and telecom applications - delivering standardized 600 W surge capability in compact SMB packages with AEC-Q101 options.
FAQ
What is the clamping voltage of P6SMB9.1AHM3_B/H at its rated peak pulse current?
The P6SMB9.1AHM3_B/H has a maximum clamping voltage (VC) of 13.4 V at 44.8 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Vishay's test conditions in Document #88370 and defines the upper voltage limit imposed on protected circuits during surge events. The P6SMB9.1AHM3_B/H maintains this clamping performance across its specified operating temperature range (-65 °C to +150 °C), with minimal drift due to its low temperature coefficient of VBR (0.068 %/°C).
Is P6SMB9.1AHM3_B/H qualified for automotive applications?
Yes, P6SMB9.1AHM3_B/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and explicit listing in Vishay's ordering table (Document #88370, page 3). The "_B" revision code denotes AEC-Q101 qualification for P6SMB6.8A through P6SMB220A variants, and the "HM3" suffix indicates halogen-free, RoHS-compliant construction meeting automotive reliability standards. This makes P6SMB9.1AHM3_B/H suitable for under-hood and cabin electronics where zero-failure field performance is mandated.
What does the "_B/H" suffix mean in P6SMB9.1AHM3_B/H?
The "_B" in P6SMB9.1AHM3_B/H indicates AEC-Q101 qualification per Vishay's ordering nomenclature (Document #88370, page 3, Note 1), while "/H" specifies packaging in 7" diameter plastic tape and reel with 750 units per reel. The "HM3" portion confirms halogen-free, RoHS-compliant materials and JESD201 Class 2 whisker resistance. This full suffix identifies a production-ready, automotive-grade variant supplied in standard SMT-compatible packaging - distinct from commercial-grade versions like P6SMB9.1A-E3/52.
How does P6SMB9.1AHM3_B/H compare to bidirectional TVS diodes like P6SMB9.1CA?
P6SMB9.1AHM3_B/H is unidirectional, with polarity marked by a cathode band and intended for DC line protection where reverse voltage is blocked. In contrast, P6SMB9.1CA is bidirectional, offering symmetric clamping for AC or floating signal lines - but with reduced VBR range (6.8–9.55 V vs. 8.65–9.55 V for unidirectional) and higher leakage at VWM. The P6SMB9.1AHM3_B/H's unidirectional architecture yields lower capacitance and better DC blocking, making it preferred for 12 V power rails and sensor outputs where polarity is fixed.
What PCB layout guidance applies to P6SMB9.1AHM3_B/H for optimal thermal and surge performance?
Vishay specifies that P6SMB9.1AHM3_B/H must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve its rated 600 W peak pulse power and 100 °C/W RθJA. These pads act as heat sinks during transient events and reduce thermal impedance. The SMB (DO-214AA) outline drawing (page 5) defines exact land pattern dimensions: 0.086" (2.18 mm) min. pad width, 0.220" (5.59 mm) reference length. Avoid narrow traces between the P6SMB9.1AHM3_B/H and ground plane - direct, low-inductance connections are essential for sub-1 ns response.
P6SMB9.1AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- 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/H FAQ
1.How can I place an order for P6SMB9.1AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB9.1AHM3_B/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_B/H reliable?
The price and inventory of P6SMB9.1AHM3_B/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_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB9.1AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB9.1AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB9.1AHM3_B/H?
P6SMB9.1AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB9.1AHM3_B/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_B/H?
For technical support, including P6SMB9.1AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB9.1AHM3_B/H requirements.
6.How does Aetrix verify that P6SMB9.1AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB9.1AHM3_B/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_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB9.1AHM3_B/H?
All P6SMB9.1AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB9.1AHM3_B/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_B/H part is unused and in its original packaging.
Return procedure for P6SMB9.1AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB9.1AHM3_B/H Tags
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