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Vishay General Semiconductor - Diodes Division P6SMB9.1AHM3/H
- Part No.:
- P6SMB9.1AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB9.1AHM3/H.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,056
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Product details
Overview
P6SMB9.1AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for circuit protection against ESD and surge transients. It features 9.1 V breakdown voltage (VBR = 8.65–9.55 V at IT = 1.0 mA), 7.78 V stand-off voltage (VWM), and clamps to ≤13.4 V at 44.8 A peak pulse current (IPPM) under 10/1000 μs waveform - used in automotive sensor signal lines and power rail protection.
For engineers reviewing the P6SMB9.1AHM3/H datasheet, P6SMB9.1AHM3/H pinout, P6SMB9.1AHM3/H application, or P6SMB9.1AHM3/H equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), clamping performance, and halogen-free RoHS-compliant sourcing details for industrial and automotive design validation.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, optimized for fast transient suppression on DC power rails and low-voltage signal paths. Its glass-passivated junction ensures stable leakage (<50 μA at VWM) and repeatable breakdown behavior across temperature (TJ = –65 to +150 °C).
The device delivers 600 W peak pulse power (10/1000 μs) with low incremental surge resistance and meets MSL Level 1 per J-STD-020 (reflow peak 260 °C). The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction - validated for automotive-grade reliability in engine control units and ADAS sensor interfaces.
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 overvoltage triggering threshold for reliable system-level surge response |
| VWM | 7.78 V - maximum continuous reverse operating voltage before leakage exceeds 50 μA; sets safe margin below VBR |
| VC @ IPPM | ≤13.4 V at 44.8 A - clamping voltage limits downstream IC stress during 600 W transient events |
| IPPM | 44.8 A - peak surge current capability under standardized 10/1000 μs waveform, derated above 25 °C ambient |
| RθJA | 100 °C/W - thermal resistance from junction to ambient air on standard 0.2" × 0.2" copper pads; informs board-level thermal design |
| TJ max. | +150 °C - maximum junction temperature rating enables operation in under-hood automotive environments |
| AEC-Q101 | Qualified - certified for automotive applications including powertrain and body electronics per stress-test requirements |
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 identified by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line (e.g., 5 V rail); conducts surge energy to ground when VIN > VBR |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop during overvoltage event |
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 surges without derating in compact layouts |
| Halogen-free, RoHS-compliant HM3 suffix | Meets automotive environmental compliance (e.g., ELV, REACH) and supports lead-free reflow assembly at 260 °C peak |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and surge lifetime testing per JEDEC standards |
| Low profile SMB package | 0.220" × 0.130" footprint allows high-density placement near connectors or ICs without compromising PCB real estate |
| Glass passivated chip junction | Ensures stable VBR tolerance (±5%), low leakage (<50 μA), and long-term reliability under thermal cycling |
Applications
| Automotive Sensor Protection | Industrial Power Rail Clamping |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before they reach sensitive input pins. Use Value: Limits voltage excursion to ≤13.4 V during 44.8 A surge, preserving signal integrity and preventing latch-up in 3.3 V/5 V interface ICs. | Use Scenario: Safeguarding 12 V DC input rails in PLC modules and motor drives against inductive switching spikes and lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp mounted at power entry point, shunting surge energy to ground before reaching DC-DC converters. Use Value: Withstands 600 W pulses and maintains <50 μA leakage at 7.78 V, enabling stable operation without false triggering during normal regulation. |
| Consumer USB Port ESD Protection | Telecom Line Interface Surge Suppression |
Use Scenario: Shielding USB 2.0 data lines (D+/D−) and VBUS in set-top boxes and smart displays from human-body-model (HBM) ESD events. IC Role / Device Role / Timing Role: Low-capacitance TVS placed inline on each signal path, leveraging fast response time (<1 ns) to divert ESD before IC damage occurs. Use Value: Clamps 8 kV contact ESD to <13.4 V within nanoseconds, meeting IEC 61000-4-2 Level 4 without degrading signal rise/fall times. | Use Scenario: Protecting Ethernet PHY interfaces and RS-485 transceivers in base station equipment from induced surges on long cable runs. IC Role / Device Role / Timing Role: Secondary-level TVS deployed after primary gas discharge tube (GDT), providing precise low-voltage clamping for semiconductor-level protection. Use Value: Matches 7.78 V stand-off to common-mode voltage margins of telecom PHYs while delivering 44.8 A surge handling for coordinated protection schemes. |
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, 9.0 V VBR (8.55–9.45 V), 600 W rating, but not AEC-Q101 qualified; higher ID (100 μA max at VWM) | Targeted at commercial/industrial designs where automotive qualification is not required | Select SMAJ9.0A for cost-sensitive non-automotive applications needing identical form factor and clamping performance |
| 1.5SMC9.0A | Larger SMC (DO-214AB) package (0.285" × 0.175"), same 9.0 V VBR, 1500 W rating; higher thermal mass but incompatible PCB footprint | Suitable for higher-energy surge environments where space permits larger package and enhanced power handling | Choose 1.5SMC9.0A only when board layout allows SMC footprint and system requires >600 W pulse capability |
Compared with SMAJ9.0A and 1.5SMC9.0A, the P6SMB9.1AHM3/H uniquely combines AEC-Q101 qualification, halogen-free compliance, and precise 9.1 V breakdown in the compact SMB outline - making it the preferred choice for automotive Tier-1 suppliers requiring traceable, qualified components without footprint change.
Availability
P6SMB9.1AHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial power rail clamping, and consumer USB port ESD protection requiring stable component supply, full traceability, and AEC-Q101 compliance.
Supply support for P6SMB9.1AHM3/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series is engineered for high-reliability transient suppression in automotive, industrial, and telecom systems - delivering consistent clamping performance, AEC-Q101 qualification, and halogen-free compliance in surface-mount packages.
FAQ
What is the breakdown voltage range of the P6SMB9.1AHM3/H?
The P6SMB9.1AHM3/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 predictable clamping onset in 5 V and 9 V system rails, and the value is confirmed in Vishay's official datasheet revision 09-Jan-2024 (Document Number: 88370). The P6SMB9.1AHM3/H maintains this specification across its qualified operating temperature range.
Is the P6SMB9.1AHM3/H AEC-Q101 qualified?
Yes, the P6SMB9.1AHM3/H is AEC-Q101 qualified, as indicated by the "HM3" suffix and confirmed in the Vishay P6SMB Series datasheet. The HM3 designation specifies halogen-free, RoHS-compliant, and AEC-Q101 qualified construction - validated for automotive applications including engine control, body electronics, and ADAS sensors. The P6SMB9.1AHM3/H undergoes stress testing per JEDEC standards including HTGB, HTRB, and surge lifetime.
What is the clamping voltage of the P6SMB9.1AHM3/H at its rated peak pulse current?
The P6SMB9.1AHM3/H clamps to a maximum of 13.4 V at its rated peak pulse current (IPPM) of 44.8 A under the standard 10/1000 μs waveform. This value is specified in the Electrical Characteristics table of the Vishay datasheet and reflects worst-case performance at TA = 25 °C. The P6SMB9.1AHM3/H maintains this clamping level with minimal variation across its operational temperature range, ensuring consistent protection for downstream 3.3 V and 5 V ICs.
Does the P6SMB9.1AHM3/H have a bidirectional variant?
No, the P6SMB9.1AHM3/H is a unidirectional TVS diode, as confirmed by its part number suffix "A" and the presence of a cathode band marking. Bidirectional variants in the P6SMB series use the "CA" suffix (e.g., P6SMB9.1CA). The P6SMB9.1AHM3/H is intended for DC-coupled protection where polarity is known - such as 12 V power inputs or unidirectional signal lines - and must be oriented with the banded end toward the protected line.
What is the thermal resistance of the P6SMB9.1AHM3/H?
The P6SMB9.1AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Thermal Characteristics section of the Vishay datasheet. This value is critical for estimating junction temperature rise under sustained power dissipation and confirms the P6SMB9.1AHM3/H's suitability for automotive under-hood environments up to +125 °C ambient.
P6SMB9.1AHM3/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:
- 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/H FAQ
1.How can I place an order for P6SMB9.1AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB9.1AHM3/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/H reliable?
The price and inventory of P6SMB9.1AHM3/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/H is usually 5 days.
3.What payment methods are accepted for P6SMB9.1AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB9.1AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB9.1AHM3/H?
P6SMB9.1AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB9.1AHM3/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/H?
For technical support, including P6SMB9.1AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB9.1AHM3/H requirements.
6.How does Aetrix verify that P6SMB9.1AHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB9.1AHM3/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/H meets industry standards.
7.What is the process for return or replacement of P6SMB9.1AHM3/H?
All P6SMB9.1AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB9.1AHM3/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/H part is unused and in its original packaging.
Return procedure for P6SMB9.1AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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