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Vishay General Semiconductor - Diodes Division P6SMB9.1AHE3_B/H
- Part No.:
- P6SMB9.1AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB9.1AHE3_B/H.pdf
- Description:
- 600W,9.1V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,169
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Product details
Overview
P6SMB9.1AHE3_B/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 control systems.
For engineers reviewing the P6SMB9.1AHE3_B/H datasheet, P6SMB9.1AHE3_B/H pinout, P6SMB9.1AHE3_B/H application, or P6SMB9.1AHE3_B/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (indicated by HE3_B suffix), low incremental surge resistance, fast response time, and compatibility with automated SMT assembly on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below VWM = 7.78 V and rapidly avalanches above VBR to limit transient overvoltage. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
Designed for 10/1000 μs waveform compliance, it delivers 44.8 A peak pulse current (IPPM) while clamping to ≤13.4 V, with thermal resistance RθJA = 100 °C/W and operating junction temperature range of –65 °C to +150 °C. The cathode band denotes polarity, and it meets J-STD-020 MSL Level 1 with 260 °C reflow peak.
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 threshold for reliable overvoltage triggering |
| Stand-off Voltage VWM | 7.78 V - maximum continuous reverse working 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 surges without failure under defined duty cycle (0.01 %) |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.220" × 0.205" footprint and matte tin-plated leads |
| AEC-Q101 Qualified | Yes (HE3_B suffix) - validated for automotive-grade reliability including temperature cycling, humidity, and surge endurance |
| Maximum Junction Temperature | +150 °C - enables operation in under-hood and industrial environments with minimal derating |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with cathode band marking; terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or low-side reference in unidirectional TVS configuration | Provides return path during clamping; must be routed with low-inductance connection to minimize overshoot |
| Cathode | Current exit terminal in forward bias; marked with band; connected to protected line (e.g., power rail or signal trace) | Defines polarity - reverse-biased during normal operation; avalanche conduction initiates here during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 3/4 surges without derating in standard PCB layouts |
| Glass passivated chip junction | Ensures stable VBR tolerance and low leakage (<50 μA at VWM) across temperature and lifetime |
| AEC-Q101 qualified (HE3_B) | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Low profile SMB package | 0.086" height enables use in space-constrained modules while supporting automated pick-and-place placement |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without prebaking, reducing manufacturing complexity |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply rails and LIN bus lines from load dump and inductive switching transients in vehicle door modules and lighting controllers. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power rail and ground, responding within <1 ns to suppress >100 V spikes. Use Value: Prevents latch-up or permanent damage to microcontrollers and transceivers while maintaining AEC-Q101 compliance for OEM production. |
Use Scenario: Safeguarding 24 V digital input channels of programmable logic controllers against field-wiring induced surges and ESD events. IC Role / Device Role / Timing Role: Standoff-clamp TVS mounted directly at connector entry point, shunting transient energy before reaching optocoupler input stage. Use Value: Eliminates need for external series impedance or RC filtering, preserving signal integrity and enabling direct interface with 24 V sensors. |
| Consumer Appliance Motor Drive Board | Telecom Power Supply Front-End |
|
Use Scenario: Shielding gate drivers and MCU I/O from back-EMF spikes generated by brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Fast-response unidirectional TVS placed across motor coil supply path and ground, clamping within nanoseconds. Use Value: Reduces system-level EMI emissions and prevents false resets or firmware corruption caused by voltage overshoot on shared ground planes. |
Use Scenario: Protecting AC-DC converter primary-side rectifier outputs and secondary-side 48 V distribution rails from lightning-induced surges in VoIP gateways and base stations. IC Role / Device Role / Timing Role: Primary-side TVS suppressing differential-mode transients upstream of bulk capacitor; rated for repetitive 600 W pulses. Use Value: Extends mean time between failures (MTBF) of telecom power supplies by absorbing up to 1000+ surge events per million hours of operation. |
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 | Same SMB package; VBR = 9.0–10.0 V; VC = 14.4 V at 41.7 A; lower PPPM (400 W) | Limited to lower-energy transients (IEC 61000-4-5 Level 2); not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification or higher surge margin requirements |
| 1.5SMC9.1A | Higher-power SMC package (1500 W PPPM); VBR = 8.65–9.55 V; VC = 13.4 V at 112 A; larger footprint (0.305" × 0.255") | Used where PCB layout allows larger device and higher surge immunity is required (e.g., outdoor telecom equipment) | Choose when system-level surge testing exceeds 600 W or when thermal dissipation demands lower RθJA |
Compared with SMAJ9.0A and 1.5SMC9.1A, P6SMB9.1AHE3_B/H uniquely balances AEC-Q101 qualification, SMB footprint constraints, and 600 W surge capability - making it optimal for space-limited automotive and industrial modules requiring certified reliability without board redesign.
Availability
P6SMB9.1AHE3_B/H is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, and consumer appliance motor drive protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P6SMB9.1AHE3_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, rectifiers, TVS devices, and power MOSFETs with emphasis on reliability, efficiency, and application-specific performance.
The P6SMB Series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-reliability transient suppression in automotive, industrial, and telecom infrastructure - delivering consistent clamping behavior and AEC-Q101 validation across voltage grades.
FAQ
What does the "HE3_B/H" suffix indicate in P6SMB9.1AHE3_B/H?
The "HE3" denotes RoHS-compliant and AEC-Q101 qualified construction; "B" specifies AEC-Q101 qualification level for P6SMB6.8A to P6SMB220A variants; "H" indicates 7" diameter tape-and-reel packaging with 750 units per reel. This suffix confirms automotive-grade reliability, lead-free finish, and standardized SMT handling for P6SMB9.1AHE3_B/H.
Is P6SMB9.1AHE3_B/H bidirectional or unidirectional?
P6SMB9.1AHE3_B/H is unidirectional. Its cathode band marks the terminal connected to the protected line, with anode tied to ground. Bidirectional versions use "CA" suffix (e.g., P6SMB9.1CA); this part's "A" suffix and documented polarity confirm unidirectional operation per Vishay's P6SMB datasheet Table 1.
What is the maximum clamping voltage of P6SMB9.1AHE3_B/H under surge conditions?
The maximum clamping voltage (VC) of P6SMB9.1AHE3_B/H is 13.4 V at 44.8 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per Figure 1 and Table 1 of the Vishay P6SMB datasheet (Doc. #88370), ensuring predictable voltage limiting during transient events.
Can P6SMB9.1AHE3_B/H replace P6SMB9.1A-E3 in an existing design?
Yes - P6SMB9.1AHE3_B/H is functionally identical to P6SMB9.1A-E3 in electrical parameters and SMB package dimensions, but adds AEC-Q101 qualification and uses "H" reel packaging. No PCB changes are needed; however, the HE3_B variant is preferred for automotive applications where qualification and traceability are mandatory.
What is the thermal resistance and maximum junction temperature for P6SMB9.1AHE3_B/H?
P6SMB9.1AHE3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and a maximum junction temperature (TJ) of +150 °C. These values are specified in the Thermal Characteristics table of Vishay's P6SMB datasheet and assume mounting on 0.2" × 0.2" copper pads per JEDEC standards.
P6SMB9.1AHE3_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)
P6SMB9.1AHE3_B/H FAQ
1.How can I place an order for P6SMB9.1AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB9.1AHE3_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 P6SMB9.1AHE3_B/H reliable?
The price and inventory of P6SMB9.1AHE3_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 P6SMB9.1AHE3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB9.1AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB9.1AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB9.1AHE3_B/H?
P6SMB9.1AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB9.1AHE3_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 P6SMB9.1AHE3_B/H?
For technical support, including P6SMB9.1AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB9.1AHE3_B/H requirements.
6.How does Aetrix verify that P6SMB9.1AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB9.1AHE3_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 P6SMB9.1AHE3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB9.1AHE3_B/H?
All P6SMB9.1AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB9.1AHE3_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 P6SMB9.1AHE3_B/H part is unused and in its original packaging.
Return procedure for P6SMB9.1AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB9.1AHE3_B/H Tags
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