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Vishay General Semiconductor - Diodes Division P6SMB9.1AHE3_A/H
- Part No.:
- P6SMB9.1AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB9.1AHE3_A/H.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,362
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Product details
Overview
P6SMB9.1AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in 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), clamps to ≤13.4 V at 44.8 A peak pulse current (IPPM), and delivers 600 W peak pulse power with a 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O protection, and DC power rail surge suppression.
For engineers reviewing the P6SMB9.1AHE3_A/H datasheet, P6SMB9.1AHE3_A/H pinout, P6SMB9.1AHE3_A/H application, or P6SMB9.1AHE3_A/H equivalent, key selection considerations include its AEC-Q101 qualification, SMB (DO-214AA) package compatibility, unidirectional polarity with cathode band marking, and verified clamping performance under repetitive transient stress per JESD22-B102 and MSL Level 1 (260 °C).
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM (7.78 V), it transitions rapidly from high-impedance blocking to low-impedance conduction, diverting surge current away from downstream ICs. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<50 µA at VWM).
Designed for automated SMT assembly, it sustains 100 A non-repetitive forward surge (8.3 ms half-sine) and maintains thermal stability up to TJ = 150 °C, with RθJA = 100 °C/W and RθJL = 20 °C/W - enabling reliable operation on standard 5.0 mm × 5.0 mm copper pads without heatsinking in most board-level applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 8.65 V / 9.55 V at IT = 1.0 mA - defines precise clamping onset threshold with ±5% tolerance for predictable protection margin |
| VWM | 7.78 V - maximum continuous reverse operating voltage before significant leakage begins; sets safe DC bias limit |
| IPPM | 44.8 A at 10/1000 µs - peak surge current it safely clamps without failure, supporting IEC 61000-4-5 Level 3 compliance |
| VC | ≤13.4 V at IPPM - clamped voltage seen by protected circuit; ensures downstream 5 V or 3.3 V logic remains within absolute max ratings |
| PPPM | 600 W - peak transient power handling capability; enables protection against lightning-induced surges and inductive switching spikes |
| TJ max | +150 °C - maximum junction temperature; supports under-hood automotive and industrial ambient environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per AEC specification |
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 indicated by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal during normal operation | Connected to protected line (e.g., +12 V rail); conducts surge current to ground when VREV > VWM |
| Anode (unmarked end) | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes shunt path for transient energy dissipation |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against severe transients like ISO 7637-2 Pulse 5a without external series impedance |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive electronics including engine control modules, body controllers, and ADAS sensor interfaces |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without popcorn cracking or delamination; no pre-bake required before assembly |
| Glass passivated junction | Ensures long-term VBR stability and low leakage drift across temperature and lifetime, critical for safety-critical systems |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD), improving protection fidelity for sensitive analog inputs |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and jump-start transients in 12 V vehicle systems. IC Role / Device Role: Unidirectional shunt clamp placed between sensor supply line and chassis ground. Use Value: Clamps 70 V/100 ms load dump to ≤13.4 V, preventing damage to 5 V tolerant ASICs while maintaining AEC-Q101 compliance. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role: Primary overvoltage suppressor on input terminal block, upstream of optocoupler or Schmitt trigger. Use Value: Absorbs 600 W pulses without degradation, enabling >100,000 surge cycles per IEC 61000-4-5 and eliminating need for redundant MOVs. |
| DC Power Rail Surge Suppression | Consumer USB Power Delivery Line Protection |
|
Use Scenario: Secondary protection on 5 V, 9 V, or 12 V DC-DC converter outputs feeding microcontrollers and memory in embedded systems. IC Role / Device Role: Final-stage TVS parallel to output capacitor, clamping residual transients escaping primary filtering. Use Value: Limits voltage excursion to ≤13.4 V during 44.8 A surges, preserving 12 V-rated LDOs and preventing brownout resets. |
Use Scenario: Overvoltage guard on VBUS line of USB-C PD ports in portable audio devices and smart home hubs exposed to adapter fault conditions. IC Role / Device Role: Unidirectional clamp referenced to system ground, placed immediately after connector. Use Value: Responds in <1 ps to clamp 20 V faults to safe levels, meeting USB-IF ESD immunity requirements without affecting 3 A charging performance. |
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-E3/52 (Vishay) | Same SMB package, but 9.0 V VBR (8.55–9.45 V), 7.75 V VWM, 13.1 V VC at 45.5 A; lower thermal resistance (RθJA = 85 °C/W) | Marginally tighter VBR tolerance; better suited for 5 V rail protection where 0.1 V headroom matters | Select SMAJ9.0A-E3/52 if optimizing for lowest possible clamping voltage on 5 V systems with limited PCB area for thermal relief |
| 1.5SMC9.1A (ON Semiconductor) | SAME VBR/VWM/VC specs, identical SMB package, but rated for 1500 W peak power and lacks AEC-Q101 qualification | Higher power rating enables longer surge duration handling; not approved for automotive use | Choose 1.5SMC9.1A only for industrial or consumer applications requiring extended surge endurance beyond 600 W, with no automotive qualification needed |
Compared with SMAJ9.0A-E3/52, P6SMB9.1AHE3_A/H offers AEC-Q101 validation and slightly higher VBR for improved noise immunity; versus 1.5SMC9.1A, it trades peak power for automotive reliability - making it optimal for cost-sensitive, safety-compliant 12 V subsystems.
Availability
P6SMB9.1AHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, and DC power rail surge suppression requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant manufacturing.
Supply support for P6SMB9.1AHE3_A/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 passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom infrastructure - engineered for automated SMT assembly, thermal robustness, and consistent clamping performance across temperature and lifetime.
FAQ
What is the breakdown voltage tolerance of P6SMB9.1AHE3_A/H?
The P6SMB9.1AHE3_A/H has a breakdown voltage VBR range of 8.65 V to 9.55 V at test current IT = 1.0 mA, corresponding to a ±5% tolerance. This tight tolerance ensures predictable clamping behavior across production lots and supports precise overvoltage margin design in safety-critical circuits using the P6SMB9.1AHE3_A/H.
Is P6SMB9.1AHE3_A/H suitable for automotive applications?
Yes, P6SMB9.1AHE3_A/H is AEC-Q101 qualified and carries the HE3 suffix denoting RoHS-compliant, automotive-grade construction. It undergoes stress testing for temperature cycling, high-temperature reverse bias, and mechanical shock - making it appropriate for under-hood and cabin electronics where the P6SMB9.1AHE3_A/H provides certified transient protection.
What is the maximum clamping voltage of P6SMB9.1AHE3_A/H at rated surge current?
The maximum clamping voltage VC of P6SMB9.1AHE3_A/H is 13.4 V when subjected to its rated peak pulse current IPPM of 44.8 A under the standard 10/1000 µs waveform. This value is guaranteed per datasheet and defines the upper voltage limit imposed on protected circuitry during transient events involving the P6SMB9.1AHE3_A/H.
Does P6SMB9.1AHE3_A/H require a heatsink for standard operation?
No, P6SMB9.1AHE3_A/H does not require an external heatsink under typical surge conditions. With RθJA = 100 °C/W and rated for 600 W peak power in short pulses (≤50 ms), it relies on PCB copper pads (0.2" × 0.2") for thermal dissipation. Continuous power dissipation is limited to 5.0 W, well within safe junction limits when mounted per recommended layout for the P6SMB9.1AHE3_A/H.
How is polarity identified on the P6SMB9.1AHE3_A/H package?
Polarity on the P6SMB9.1AHE3_A/H is indicated by a cathode band printed on the SMB (DO-214AA) case. The banded end is the cathode and must be connected toward the positive side of the protected line (e.g., +12 V), while the unmarked end is the anode and connects to ground. This unidirectional configuration is essential for correct operation of the P6SMB9.1AHE3_A/H.
P6SMB9.1AHE3_A/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:
- Obsolete
- 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_A/H FAQ
1.How can I place an order for P6SMB9.1AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB9.1AHE3_A/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_A/H reliable?
The price and inventory of P6SMB9.1AHE3_A/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_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB9.1AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB9.1AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB9.1AHE3_A/H?
P6SMB9.1AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB9.1AHE3_A/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_A/H?
For technical support, including P6SMB9.1AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB9.1AHE3_A/H requirements.
6.How does Aetrix verify that P6SMB9.1AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB9.1AHE3_A/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_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB9.1AHE3_A/H?
All P6SMB9.1AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB9.1AHE3_A/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_A/H part is unused and in its original packaging.
Return procedure for P6SMB9.1AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB9.1AHE3_A/H Tags
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