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Vishay General Semiconductor - Diodes Division P6SMB91CAHE3_A/H
- Part No.:
- P6SMB91CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB91CAHE3_A/H.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,800
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Product details
Overview
P6SMB91CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features 91 V breakdown voltage (VBR), 77.8 V stand-off voltage (VWM), 125 V maximum clamping voltage (VC) at 4.8 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 P6SMB91CAHE3_A/H datasheet, P6SMB91CAHE3_A/H pinout, P6SMB91CAHE3_A/H application, or P6SMB91CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low incremental surge resistance, and compatibility with automated SMT assembly on PCBs requiring robust ESD and lightning surge immunity per IEC 61000-4-2/4-5.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (<1 μA leakage at 77.8 V), but switches to low-impedance conduction within picoseconds when transient voltage exceeds VBR (86.5–95.5 V). Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints.
Thermal performance is defined by RθJA = 100 °C/W and RθJL = 20 °C/W, supporting operation up to TJ = 150 °C. The glass-passivated junction and MSL Level 1 moisture sensitivity rating ensure reliability in reflow-soldered automotive modules where thermal cycling and long-term stability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 86.5 V / 95.5 V - ensures reliable triggering above system operating voltage while avoiding false clamping during normal transients |
| VWM | 77.8 V - maximum continuous reverse voltage the device blocks without significant leakage current |
| VC @ IPPM | 125 V at 4.8 A - defines worst-case voltage seen by protected circuit during 600 W surge event |
| PPPM | 600 W - peak pulse power handling with 10/1000 μs waveform, enabling protection against IEC 61000-4-5 Level 4 surges |
| IPPM | 4.8 A - peak pulse current corresponding to VC, directly usable for PCB trace sizing and layout margining |
| TJ max. | 150 °C - supports under-hood automotive applications and industrial environments with elevated ambient temperatures |
| AEC-Q101 qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node in bidirectional configuration | No marking on device; symmetric terminals enable identical connection regardless of orientation on PCB |
| Cathode | Current exit terminal in forward bias; common node in bidirectional configuration | No marking on device; bidirectional operation eliminates need for polarity-aware placement |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), and ungrounded power rails without polarity concerns |
| 600 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive electronics |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive subsystems including body control modules, ADAS sensors, and infotainment power supplies |
| Low profile SMB package | 0.220" × 0.130" footprint supports high-density layouts and compatibility with standard SMT pick-and-place equipment |
| Glass passivated junction | Ensures stable VBR over time and temperature, minimizing parameter drift in harsh operating environments |
Applications
| Automotive Body Control Module | Industrial RS-485 Communication Line |
|---|---|
Use Scenario: Protects microcontroller I/O and power supply inputs from load dump and inductive switching spikes in door module ECUs. IC Role / Device Role / Timing Role: Shunt TVS diode placed at power rail entry and signal line terminations to clamp transients before reaching sensitive logic. Use Value: Prevents latch-up and permanent damage during 12 V battery load dump events (ISO 7637-2 Pulse 5a) with <125 V clamping voltage. |
Use Scenario: Shields RS-485 transceiver pins from ESD and surge events in factory automation networks exposed to motor drive noise. IC Role / Device Role / Timing Role: Bidirectional clamping device across differential pair (A/B) and ground to suppress common-mode and differential-mode transients. Use Value: Maintains data integrity during ±8 kV contact ESD (IEC 61000-4-2) and 1 kV surge (IEC 61000-4-5) without signal distortion. |
| Consumer Appliance Motor Drive Board | Telecom Power Input Stage |
Use Scenario: Installed across relay coil and MOSFET drain-source in washing machine motor control to absorb inductive kickback. IC Role / Device Role / Timing Role: Fast-response voltage clamp limiting flyback voltage to safe levels during MOSFET turn-off. Use Value: Eliminates need for snubber RC networks, reducing BOM count and board space while maintaining 600 W surge handling. |
Use Scenario: Placed at DC input of PoE-powered network switch to suppress lightning-induced surges entering via Ethernet cable pairs. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V DC input rail, coordinated with secondary-side protection for full-system surge compliance. Use Value: Limits input rail overshoot to ≤125 V during 10/700 μs telecom surge test, preserving upstream DC-DC converter reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90CA | 90 V VBR min (85.5 V), 73.7 V VWM, 121 V VC @ 5.0 A - slightly lower clamping and tighter VBR tolerance | Preferred for designs requiring tighter voltage margins near 90 V nominal rails | Select when lower clamping voltage is prioritized over AEC-Q101 qualification |
| 1.5SMC91CA | Same VBR/VWM/VC specs but in larger SMC (DO-214AB) package - higher thermal mass, RθJA = 60 °C/W | Better suited for high-repetition-rate surge environments or non-AEC applications needing higher PD | Choose when board space allows larger footprint and automotive qualification is not required |
Compared with SMBJ90CA and 1.5SMC91CA, P6SMB91CAHE3_A/H uniquely combines AEC-Q101 qualification, SMB footprint, and 125 V clamping in a cost-optimized automotive-grade TVS - making it optimal for space-constrained, safety-critical vehicle subsystems where qualification and size are non-negotiable.
Availability
P6SMB91CAHE3_A/H is available at Aetrix Electronics and suitable for automotive body electronics, industrial communication interfaces, consumer appliance motor controls, and telecom power input stages requiring stable component supply with guaranteed AEC-Q101 compliance and traceable sourcing.
Supply support for P6SMB91CAHE3_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 protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for fast response, stable clamping, and seamless integration into automated SMT manufacturing flows.
FAQ
What is the breakdown voltage range for P6SMB91CAHE3_A/H?
The P6SMB91CAHE3_A/H has a specified breakdown voltage (VBR) range of 86.5 V to 95.5 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This range ensures consistent clamping behavior across production lots and temperature extremes, and is confirmed in the Vishay P6SMB datasheet revision 09-Jan-2024, page 2.
Is P6SMB91CAHE3_A/H suitable for automotive applications?
Yes, P6SMB91CAHE3_A/H is AEC-Q101 qualified, as indicated by the "HE3" suffix and documented in the Vishay ordering information table (page 3). It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD, making it appropriate for under-hood and cabin automotive modules where reliability is mandated.
What does the "CA" suffix mean in P6SMB91CAHE3_A/H?
The "CA" suffix in P6SMB91CAHE3_A/H denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities. Unlike unidirectional variants (e.g., P6SMB91A), no cathode band marking is present, and electrical characteristics apply identically in either direction, simplifying layout for AC or differential signal protection.
What is the maximum clamping voltage of P6SMB91CAHE3_A/H at rated peak pulse current?
The maximum clamping voltage (VC) of P6SMB91CAHE3_A/H is 125 V at 4.8 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Does P6SMB91CAHE3_A/H require special PCB layout considerations?
Yes - for optimal surge performance, P6SMB91CAHE3_A/H should be mounted on minimum recommended copper pads (0.2" × 0.2" / 5.0 mm × 5.0 mm per terminal) as specified in the Vishay datasheet. Short, low-inductance traces to protected nodes and grounding are essential to preserve its sub-nanosecond response and avoid voltage overshoot due to parasitic inductance.
P6SMB91CAHE3_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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 77.8V
- Voltage - Breakdown (Min):
- 86.5V
- Voltage - Clamping (Max) @ Ipp:
- 125V
- Current - Peak Pulse (10/1000µs):
- 4.8A
- 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)
P6SMB91CAHE3_A/H FAQ
1.How can I place an order for P6SMB91CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB91CAHE3_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 P6SMB91CAHE3_A/H reliable?
The price and inventory of P6SMB91CAHE3_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 P6SMB91CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB91CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB91CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB91CAHE3_A/H?
P6SMB91CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB91CAHE3_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 P6SMB91CAHE3_A/H?
For technical support, including P6SMB91CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB91CAHE3_A/H requirements.
6.How does Aetrix verify that P6SMB91CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB91CAHE3_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 P6SMB91CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB91CAHE3_A/H?
All P6SMB91CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB91CAHE3_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 P6SMB91CAHE3_A/H part is unused and in its original packaging.
Return procedure for P6SMB91CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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