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Vishay General Semiconductor - Diodes Division P6SMB91CAHM3/H
- Part No.:
- P6SMB91CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB91CAHM3/H.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,787
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Product details
Overview
P6SMB91CAHM3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 91 V breakdown voltage (VBR = 86.5–95.5 V at IT = 1.0 mA), 125 V maximum clamping voltage (VC) at 4.8 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 μs waveform). It protects signal lines and power rails in automotive sensor interfaces and industrial control inputs against ESD and inductive switching transients.
For engineers reviewing the P6SMB91CAHM3/H datasheet, P6SMB91CAHM3/H pinout, P6SMB91CAHM3/H application, or P6SMB91CAHM3/H equivalent, this device delivers AEC-Q101 qualified transient suppression with halogen-free RoHS compliance, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for automotive-grade PCB assembly and long-term reliability in harsh environments.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, VWM, and clamping characteristics in forward and reverse directions. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM = 77.8 V) and fast response time (<1 ns) to transient events.
The device uses a planar junction structure in an SMB package with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Thermal resistance is RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), enabling effective heat dissipation on standard 0.2" × 0.2" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 86.5 V / 95.5 V at IT = 1.0 mA - defines precise voltage threshold where avalanche conduction begins under transient stress |
| VWM | 77.8 V - maximum continuous reverse operating voltage before significant leakage; sets safe working margin below VBR |
| VC @ IPPM | 125 V at 4.8 A - clamped voltage during 10/1000 μs surge; determines protected circuit's maximum overvoltage exposure |
| IPPM | 4.8 A - peak pulse current capability under standardized 10/1000 μs waveform; directly correlates to energy-handling capacity |
| PPPM | 600 W - peak pulse power rating; enables robust protection against high-energy transients like ISO 7637-2 Pulse 1/2a/5a |
| Junction Temp Range | −65 °C to +150 °C - supports operation in under-hood automotive and industrial ambient conditions without derating |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with automated pick-and-place |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating; matte tin-plated terminals; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (either polarity) | Acts as cathode during positive transients and anode during negative transients - symmetrical conduction path |
| Cathode | Transient current exit point (either polarity) | Paired terminal completing bidirectional avalanche path; no band marking distinguishes polarity |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces per stress test requirements |
| Halogen-free & RoHS-compliant | Meets JEDEC J-STD-609A Class 1 definition; eliminates brominated flame retardants for environmental and manufacturing safety |
| MSL Level 1 (260 °C peak) | Enables single-reflow assembly without baking; supports high-yield SMT production in commercial and automotive lines |
| 600 W peak pulse power | Withstands repetitive 10/1000 μs surges at 0.01% duty cycle - suitable for CAN bus, LIN, and 12 V power rail protection |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage stress on downstream ICs; improves system-level immunity without requiring additional series impedance |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting analog/digital signal lines of wheel speed sensors, temperature sensors, and pressure transducers exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across sensor supply and ground or signal and return paths to shunt transients before reaching ASIC or MCU input pins. Use Value: Prevents latch-up or permanent damage to sensor interface ICs by limiting transient voltage to ≤125 V while maintaining <1.0 μA leakage at 77.8 V nominal supply. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges and relay contact bounce. IC Role / Device Role / Timing Role: Primary transient suppressor mounted at connector entry point, absorbing >600 W spikes before they propagate into optocoupler or Schmitt-trigger input stages. Use Value: Enables reliable operation in factory-floor environments with frequent inductive switching; maintains signal integrity with <1 ns response and no degradation after repeated 4.8 A pulses. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding Ethernet PHY interfaces, RS-485 transceivers, and PoE-powered devices from lightning-induced surges on data lines. IC Role / Device Role / Timing Role: Secondary-level TVS deployed alongside GDTs or polymer PTCs to provide low-clamp, fast-response protection for sensitive communication ICs. Use Value: Clamps to 125 V within nanoseconds, preserving signal eye diagram integrity and preventing bit errors during transient events up to 600 W. |
Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Mounted across motor terminals or H-bridge outputs to divert inductive kickback away from gate drivers and microcontrollers. Use Value: Absorbs 600 W energy bursts without failure, extending MOSFET lifetime and eliminating need for snubber RC networks in cost-sensitive designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ90CA | Same VBR range (85.5–94.5 V), lower PPPM = 400 W, SMA package (smaller footprint, higher RθJA) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or sustained load-dump events | Select when board space is constrained and surge energy is ≤400 W; verify thermal performance with reduced pad area. |
| SMCJ90CA | Higher PPPM = 1500 W, same VBR and VC, larger SMC package (DO-214AB) | Overqualified for 600 W needs; adds 3.5 mm × 4.6 mm footprint and requires larger copper pour | Choose only if future design scalability to 1500 W surges is required; otherwise incurs unnecessary cost and layout overhead. |
Compared with SMAJ90CA and SMCJ90CA, P6SMB91CAHM3/H delivers optimal balance of 600 W surge handling, SMB footprint compatibility, AEC-Q101 qualification, and halogen-free compliance - making it the preferred choice for automotive and industrial applications demanding verified reliability without over-engineering.
Availability
P6SMB91CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, telecom line cards, and consumer appliance motor drives requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB91CAHM3/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 systems, designed to meet stringent AEC-Q101, RoHS, and UL standards while delivering consistent clamping performance across temperature and life cycles.
FAQ
What is the breakdown voltage tolerance for P6SMB91CAHM3/H?
The P6SMB91CAHM3/H has a specified breakdown voltage range of 86.5 V to 95.5 V at a test current of 1.0 mA, representing ±5% tolerance around the nominal 91 V rating. This tight VBR window ensures predictable clamping behavior in bidirectional configurations and supports accurate system-level overvoltage margining for protected ICs.
Is P6SMB91CAHM3/H suitable for automotive applications?
Yes, P6SMB91CAHM3/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction with automotive-grade reliability testing. It is explicitly rated for under-hood and chassis-mounted applications where temperature cycling, vibration, and high-energy transients such as load dump must be mitigated.
What does the "CA" suffix mean in P6SMB91CAHM3/H?
The "CA" suffix in P6SMB91CAHM3/H denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both forward and reverse directions. Unlike unidirectional variants (e.g., P6SMB91A), P6SMB91CAHM3/H has no polarity marking and functions identically regardless of voltage polarity applied across its terminals.
How does the SMB package of P6SMB91CAHM3/H compare to SMA or SMC packages?
The SMB (DO-214AA) package of P6SMB91CAHM3/H measures 4.57 mm × 3.94 mm × 2.20 mm - larger than SMA (DO-214AC) but smaller than SMC (DO-214AB). It offers superior power handling over SMA (600 W vs. 400 W) while maintaining compatibility with standard SMT placement equipment and providing better thermal dissipation than SMA due to larger copper pad interface area.
What is the maximum clamping voltage of P6SMB91CAHM3/H under surge conditions?
The maximum clamping voltage (VC) of P6SMB91CAHM3/H is 125 V at a peak pulse current (IPPM) of 4.8 A using the standardized 10/1000 μs waveform. This value represents the upper limit of voltage seen by downstream circuitry during worst-case transient events and is critical for ensuring protected ICs remain within their absolute maximum ratings.
P6SMB91CAHM3/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:
- Discontinued at Digi-Key
- 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:
- 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)
P6SMB91CAHM3/H FAQ
1.How can I place an order for P6SMB91CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB91CAHM3/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 P6SMB91CAHM3/H reliable?
The price and inventory of P6SMB91CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB91CAHM3/H is usually 5 days.
3.What payment methods are accepted for P6SMB91CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB91CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB91CAHM3/H?
P6SMB91CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB91CAHM3/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 P6SMB91CAHM3/H?
For technical support, including P6SMB91CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB91CAHM3/H requirements.
6.How does Aetrix verify that P6SMB91CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB91CAHM3/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 P6SMB91CAHM3/H meets industry standards.
7.What is the process for return or replacement of P6SMB91CAHM3/H?
All P6SMB91CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB91CAHM3/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 P6SMB91CAHM3/H part is unused and in its original packaging.
Return procedure for P6SMB91CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB91CAHM3/H Tags
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