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Vishay General Semiconductor - Diodes Division P6SMB9.1AHE3/5B
- Part No.:
- P6SMB9.1AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB9.1AHE3/5B.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,802
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Product details
Overview
P6SMB9.1AHE3/5B 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 in automotive and industrial power supplies.
For engineers reviewing the P6SMB9.1AHE3/5B datasheet, P6SMB9.1AHE3/5B pinout, P6SMB9.1AHE3/5B application, or P6SMB9.1AHE3/5B equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), polarity marking (cathode band), and real-world clamping performance under standardized surge conditions.
Technical Context
This TVS diode operates as a unidirectional clamping device with a breakdown voltage (VBR) of 8.65–9.55 V at 1.0 mA test current, enabling precise overvoltage protection near 9.1 V rail systems. Its low incremental surge resistance ensures minimal voltage overshoot during fast transients.
Designed for surface-mount assembly on 5.0 mm × 5.0 mm copper pads per terminal, it meets J-STD-020 MSL Level 1 (peak reflow ≤ 260 °C) and supports automated placement. The glass-passivated junction provides stable leakage (< 50 μA at VWM) and robust reliability across -65 °C to +150 °C operating junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 7.78 V - Maximum continuous reverse voltage before significant leakage; sets safe operating margin below 9.1 V nominal rail |
| VBR (Breakdown) | 8.65–9.55 V at 1.0 mA - Tight 10% tolerance window ensures predictable turn-on timing for transient suppression |
| VC (Clamping) | 13.4 V at 44.8 A - Limits downstream voltage stress during 600 W 10/1000 μs surge, protecting 12 V logic interfaces |
| PPPM | 600 W - Sustains high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) without failure when mounted per spec |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance defines derating above 25 °C ambient; requires PCB copper area for full power |
| 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 |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, cathode indicated by molded band. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-voltage return path; forms clamping loop with cathode |
| Cathode | Protected line input | Banded end connects to signal/power line requiring transient suppression; conducts surge current to ground |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Handles automotive load-dump and inductive kick energy without degradation under repetitive duty cycle (0.01 %) |
| Glass passivated junction | Ensures stable VBR and low leakage (< 50 μA) over lifetime and temperature extremes |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive electronics including engine control units, body controllers, and ADAS sensors |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking; peak temperature up to 260 °C supported |
| Low profile SMB package | 0.89 mm height allows dense PCB layouts while maintaining thermal pad area for heat dissipation |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Suppresses load-dump transients (ISO 7637-2 Pulse 5a) on 12 V battery-fed ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS clamps positive surges to ground, limiting voltage seen by LDOs and microcontrollers. Use Value: Prevents latch-up or gate oxide damage in 12 V rail components by holding clamped voltage ≤13.4 V during 44.8 A surge events. |
Use Scenario: Shields analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Fast-response TVS absorbs sub-100 ns ESD pulses before they reach precision ADC front-ends. Use Value: Maintains signal integrity with <50 μA leakage at 7.78 V, avoiding DC offset errors in millivolt-level sensor signals. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Protection |
|
Use Scenario: Protects AC-DC adapter primary-side controllers from lightning-induced surges on mains input. IC Role / Device Role / Timing Role: Clamps fast-rising transients before they propagate to PWM controller ICs and MOSFET drivers. Use Value: Delivers 600 W pulse handling with 13.4 V clamping, reducing need for secondary-stage filtering and lowering BOM cost. |
Use Scenario: Guards Ethernet PHY or RS-485 transceivers connected to outdoor cabling exposed to induced surges. IC Role / Device Role / Timing Role: Acts as first-line defense on data line pairs, shunting common-mode transients to chassis ground. Use Value: Enables compliance with IEC 61000-4-5 Level 3 (1 kV/2 kV) with minimal board space due to compact SMB footprint. |
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 nominal VWM, 14.4 V VC at 41.7 A; lower PPPM (400 W) | Limited to lower-energy transients; not AEC-Q101 qualified | Select for cost-sensitive consumer designs where 400 W rating suffices and automotive qualification is unnecessary |
| 1.5SMC9.1A | Higher-power SMC package (1500 W PPPM), same 9.1 V rating, 13.4 V VC; larger footprint (7.11 mm × 6.22 mm) | Used where higher surge margin is required, e.g., industrial motor drives with frequent switching | Choose when system-level surge testing exceeds 600 W or when thermal budget demands lower RθJA (50 °C/W) |
Compared with SMAJ9.0A, P6SMB9.1AHE3/5B offers higher surge capability and automotive qualification; compared with 1.5SMC9.1A, it trades power headroom for space-constrained layouts-making it optimal for AEC-Q101-compliant modules where PCB area is limited but 600 W protection is sufficient.
Availability
P6SMB9.1AHE3/5B is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor nodes, and telecom line interface cards requiring stable component supply with AEC-Q101 assurance and consistent SMB packaging.
Supply support for P6SMB9.1AHE3/5B 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, and protection devices with emphasis on reliability, efficiency, and automotive-grade validation.
The P6SMB Series targets high-reliability transient suppression in space-constrained, thermally demanding environments-designed specifically for automotive, industrial, and telecom applications where consistent clamping and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of P6SMB9.1AHE3/5B and how does it protect downstream circuitry?
The P6SMB9.1AHE3/5B has a maximum clamping voltage (VC) of 13.4 V at 44.8 A peak pulse current (10/1000 μs waveform). This value defines the highest voltage imposed on protected lines during surge events, ensuring that sensitive components like 12 V microcontrollers or analog sensors remain within their absolute maximum ratings. The low clamping ratio (VC/VBR ≈ 1.44) reflects efficient energy diversion without excessive overshoot.
Is P6SMB9.1AHE3/5B qualified for automotive use, and what does the "HE3" suffix indicate?
Yes, P6SMB9.1AHE3/5B is AEC-Q101 qualified-the "HE3" suffix explicitly denotes RoHS-compliant construction with automotive-grade reliability validation. This includes stress testing for temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD), making it suitable for under-hood and body-control module applications where long-term stability is critical.
How does the SMB (DO-214AA) package of P6SMB9.1AHE3/5B impact thermal performance?
The SMB package of P6SMB9.1AHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal. This means sustained power dissipation must be derated above 25 °C ambient-e.g., only ~3.5 W is sustainable at 70 °C ambient. For higher average power, additional copper area or thermal vias are required to maintain TJ ≤ 150 °C.
What is the reverse leakage current of P6SMB9.1AHE3/5B at its stand-off voltage, and why does it matter?
P6SMB9.1AHE3/5B exhibits a maximum reverse leakage current (ID) of 50 μA at its 7.78 V stand-off voltage (VWM). This low leakage prevents unwanted loading of low-power sensor rails or battery-backed circuits, preserving accuracy in precision analog paths and minimizing quiescent current in always-on automotive modules.
Can P6SMB9.1AHE3/5B be used in bidirectional configurations?
No-P6SMB9.1AHE3/5B is a unidirectional TVS diode, identified by the "A" suffix and cathode band marking. For bidirectional protection (e.g., AC lines or differential data pairs), the equivalent part is P6SMB9.1CAHE3/5B ("CA" suffix), which provides symmetrical clamping in both polarities with identical VWM and VC ratings.
P6SMB9.1AHE3/5B 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)
P6SMB9.1AHE3/5B FAQ
1.How can I place an order for P6SMB9.1AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB9.1AHE3/5B 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 P6SMB9.1AHE3/5B reliable?
The price and inventory of P6SMB9.1AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB9.1AHE3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB9.1AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB9.1AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB9.1AHE3/5B?
P6SMB9.1AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB9.1AHE3/5B 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 P6SMB9.1AHE3/5B?
For technical support, including P6SMB9.1AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB9.1AHE3/5B requirements.
6.How does Aetrix verify that P6SMB9.1AHE3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB9.1AHE3/5B 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 P6SMB9.1AHE3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB9.1AHE3/5B?
All P6SMB9.1AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB9.1AHE3/5B, 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 P6SMB9.1AHE3/5B part is unused and in its original packaging.
Return procedure for P6SMB9.1AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB9.1AHE3/5B Tags
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