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Vishay General Semiconductor - Diodes Division P6SMB9.1AHE3/52
- Part No.:
- P6SMB9.1AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB9.1AHE3/52.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,197
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Product details
Overview
P6SMB9.1AHE3/52 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 power supplies.
For engineers reviewing the P6SMB9.1AHE3/52 datasheet, P6SMB9.1AHE3/52 pinout, P6SMB9.1AHE3/52 application, or P6SMB9.1AHE3/52 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (via HE3 suffix), low clamping ratio (VC/VWM ≈ 1.72), thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT assembly on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a shunt-clamping device that remains high-impedance below VWM (7.78 V) and rapidly transitions to low-impedance conduction above VBR (8.65–9.55 V), limiting transient overvoltage to ≤13.4 V at 44.8 A. Its glass-passivated junction ensures stable breakdown and low leakage (<50 μA at VWM).
Designed for repetitive surge suppression under 0.01% duty cycle, it supports 100 A non-repetitive forward surge (IFSM) and operates across –65 °C to +150 °C junction temperature. The SMB package meets UL 94 V-0 flammability and J-STD-020 MSL Level 1 (260 °C peak reflow).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 8.65–9.55 V at 1.0 mA test current - defines precise conduction onset 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 (10/1000 μs) - limits transient voltage seen by protected downstream circuitry |
| Peak Pulse Power PPPM | 600 W - sustains high-energy surges without failure under standardized lightning/inductive-switching stress |
| Package | SMB (DO-214AA) - 0.220" × 0.130" footprint, compatible with standard SMT pick-and-place and reflow profiles |
| AEC-Q101 Qualified | Yes (HE3 suffix) - validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| Thermal Resistance RθJA | 100 °C/W - determines junction temperature rise under 5.0 W steady-state dissipation on standard PCB pads |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance reference; completes clamping loop during positive transients |
| Cathode | Transient voltage sensing / clamping node | Connected to protected line (e.g., 12 V rail or sensor input); conducts when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Withstands automotive load-dump and ISO 7637-2 pulse 5a surges without degradation |
| Low clamping ratio (VC/VWM = 1.72) | Minimizes voltage overshoot during clamping, preserving margin for 12 V system ICs |
| Glass passivated junction | Ensures stable VBR over time and temperature, reducing drift in long-life industrial deployments |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive under-hood and body-control module applications requiring zero field failures |
| MSL Level 1 (260 °C peak) | Enables single-pass lead-free reflow without moisture-induced popcorn cracking |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppresses load-dump transients (up to 35 V, 100 ms) on 12 V battery-fed ECUs and lighting modules. IC Role / Device Role / Timing Role: Shunt-clamping TVS placed between power rail and chassis ground, responding in <1 ps to limit voltage excursion. Use Value: Prevents latch-up or permanent damage to MCU power inputs and CAN transceivers during alternator regulation failure. |
Use Scenario: Guards analog outputs of pressure/temperature sensors against ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: Unidirectional clamp on 0–5 V or 4–20 mA signal lines, absorbing ±8 kV contact ESD per IEC 61000-4-2. Use Value: Maintains signal integrity and avoids false readings or microcontroller resets during maintenance hot-plug operations. |
| Consumer DC Power Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Protects secondary-side rectifier and controller ICs in wall adapters subjected to AC line surges and switching noise. IC Role / Device Role / Timing Role: Fast-response TVS on +5 V or +12 V output rails, triggered before regulator overvoltage protection activates. Use Value: Eliminates need for redundant overvoltage crowbar circuits, reducing BOM cost and board area. |
Use Scenario: Shields Ethernet PHY and PoE interface components from induced surges on RJ45 ports in enterprise switches. IC Role / Device Role / Timing Role: Primary-level transient suppressor on differential pairs, coordinated with common-mode chokes and secondary TVS. Use Value: Achieves Level 4 (4 kV) surge immunity per IEC 61000-4-5 without compromising signal bandwidth up to 100 MHz. |
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, but VBR = 9.0–10.0 V, VC = 14.4 V at 41.7 A; no AEC-Q101 qualification in base version | Commercial-grade only; not validated for automotive temperature cycling or lifetime reliability testing | Select when AEC-Q101 compliance is unnecessary and higher clamping voltage is acceptable |
| 1.5SMC9.1A | Larger SMC (DO-214AB) package (7.11 mm × 6.22 mm); identical VBR, VWM, VC, and PPPM; RθJA = 50 °C/W | Higher thermal performance allows sustained 5 W dissipation; requires larger PCB real estate and different stencil design | Select when thermal headroom is critical and board space permits larger footprint |
Compared with SMAJ9.0A, P6SMB9.1AHE3/52 offers automotive qualification and tighter VC; compared with 1.5SMC9.1A, it trades thermal margin for compactness and SMT placement efficiency - ideal for space-constrained automotive modules.
Availability
P6SMB9.1AHE3/52 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom power supply designs requiring stable component supply, AEC-Q101 traceability, and consistent SMB package logistics.
Supply support for P6SMB9.1AHE3/52 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 targets robust transient suppression in harsh environments, with design focus on automotive, industrial, and telecom systems where surge immunity, long-term stability, and automated manufacturability are essential.
FAQ
What is the clamping voltage of P6SMB9.1AHE3/52 at its rated peak pulse current?
The P6SMB9.1AHE3/52 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 per Figure 1 in Vishay's datasheet 88370 and reflects worst-case conduction behavior under surge conditions - critical for verifying voltage margin on protected ICs like automotive MCUs or sensor front-ends.
Is P6SMB9.1AHE3/52 suitable for automotive applications?
Yes, P6SMB9.1AHE3/52 is AEC-Q101 qualified, as indicated by the "HE3" suffix, and is explicitly intended for automotive use. It passes stress tests including temperature cycling, high-temperature operating life, and mechanical shock - making it appropriate for engine control units, body electronics, and ADAS sensor modules where reliability under thermal and vibration stress is mandatory.
What does the "HE3" suffix mean in P6SMB9.1AHE3/52?
The "HE3" suffix in P6SMB9.1AHE3/52 denotes RoHS-compliant construction with AEC-Q101 qualification and matte tin-plated leads meeting JESD 22-B102 whisker resistance Class 2. It distinguishes this variant from commercial-grade "E3" parts and confirms compliance with automotive reliability standards - a requirement for Tier 1 supplier documentation and PPAP submissions.
How does P6SMB9.1AHE3/52 differ from bidirectional variants like P6SMB9.1CA?
P6SMB9.1AHE3/52 is unidirectional and features a cathode band marking; it conducts only during reverse-biased overvoltage events. In contrast, P6SMB9.1CA is bidirectional with symmetrical clamping in both polarities and no polarity marking. Use P6SMB9.1AHE3/52 on DC rails with defined ground reference; choose the CA version only for AC-coupled or floating signal lines where polarity reversal may occur.
What is the maximum printed circuit board pad size recommended for P6SMB9.1AHE3/52?
Vishay specifies a minimum mounting pad layout of 0.2" × 0.2" (5.0 mm × 5.0 mm) copper area per terminal for P6SMB9.1AHE3/52 to achieve rated 600 W pulse power and thermal performance. Smaller pads increase thermal resistance and reduce surge capability - especially critical in automotive under-hood applications where ambient temperatures exceed 85 °C.
P6SMB9.1AHE3/52 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB9.1AHE3/52 FAQ
1.How can I place an order for P6SMB9.1AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB9.1AHE3/52 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 P6SMB9.1AHE3/52 reliable?
The price and inventory of P6SMB9.1AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB9.1AHE3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB9.1AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB9.1AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB9.1AHE3/52?
P6SMB9.1AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB9.1AHE3/52 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 P6SMB9.1AHE3/52?
For technical support, including P6SMB9.1AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB9.1AHE3/52 requirements.
6.How does Aetrix verify that P6SMB9.1AHE3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB9.1AHE3/52 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 P6SMB9.1AHE3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB9.1AHE3/52?
All P6SMB9.1AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB9.1AHE3/52, 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 P6SMB9.1AHE3/52 part is unused and in its original packaging.
Return procedure for P6SMB9.1AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB9.1AHE3/52 Tags
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