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Vishay General Semiconductor - Diodes Division P6SMB91CAHM3_A/I
- Part No.:
- P6SMB91CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB91CAHM3_A/I.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,809
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Product details
Overview
P6SMB91CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal or power lines. It features a 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 rating with 10/1000 μs waveform - used to protect MOSFETs, sensor interfaces, and automotive ECUs against ESD and inductive switching surges.
For engineers reviewing the P6SMB91CAHM3_A/I datasheet, P6SMB91CAHM3_A/I pinout, P6SMB91CAHM3_A/I application, or P6SMB91CAHM3_A/I equivalent, this part delivers AEC-Q101-qualified transient suppression in SMB (DO-214AA) package with halogen-free, RoHS-compliant construction - critical for automotive-grade reliability, board-level surge immunity validation, and high-volume automated assembly.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, VWM, and VC specifications in forward and reverse directions. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM = 77.8 V) and fast response time (<1.0 ns), enabling protection of high-speed analog and digital signal paths without signal distortion.
Thermally, it exhibits RθJA = 100 °C/W and RθJL = 20 °C/W, supporting operation up to TJ = +150 °C. The device is rated for repetitive 0.01% duty cycle pulses and meets J-STD-020 MSL Level 1 (peak reflow = 260 °C), making it suitable for lead-free SMT processes in industrial and automotive PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 86.5–95.5 V at 1.0 mA test current - defines precise clamping onset threshold under transient stress |
| Stand-off Voltage VWM | 77.8 V maximum - ensures no conduction during normal 72 V automotive supply operation |
| Clamping Voltage VC | 125 V at 4.8 A IPPM - limits downstream voltage stress to safe levels during 600 W surge events |
| Peak Pulse Power PPPM | 600 W with 10/1000 μs waveform - sustains high-energy transients common in load-dump and ISO 7637-2 tests |
| Package | SMB (DO-214AA) - industry-standard 2-pin surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height |
| AEC-Q101 Qualified | Yes (HM3 suffix) - validated for automotive electronics per stress test requirements including temperature cycling and HTRB |
| RoHS & Halogen-Free | Compliant per Vishay HM3 designation - meets automotive OEM material compliance mandates (e.g., GMW3172, Ford WSS-M99P9999-A1) |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both terminals serve as interchangeable surge current entry/exit points - enables placement without orientation constraints on PCB |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Withstands automotive load-dump surges and industrial inductive kickback without degradation |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage margin required for protected ICs - reduces need for derating downstream components |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free soldering without preconditioning - eliminates moisture sensitivity handling overhead |
| Halogen-free & RoHS-compliant (HM3) | Fulfills strict automotive material declarations (IMDS, ELV) and end-of-life recycling requirements |
| 150 °C max junction temperature | Enables deployment in engine bay or under-hood modules with minimal thermal derating |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from ISO 16750-2 jump-start and load-dump transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point before signal conditioning circuitry. Use Value: Limits induced voltage to ≤125 V during 600 W surges, preserving integrity of 5 V or 3.3 V microcontroller I/O pins and ADC front-ends. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring faults and relay coil flyback. IC Role / Device Role / Timing Role: Primary transient suppressor across input terminals, shunting surge energy to ground before optocoupler or Schmitt trigger input stage. Use Value: Enables reliable operation under IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) testing up to 2 kV line-to-ground. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding Ethernet PHY interfaces and PoE-powered devices from lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Secondary-level TVS placed after gas discharge tube (GDT) or primary MOV, providing low-clamp refinement. Use Value: Clamps residual transients to <125 V within nanoseconds - prevents latch-up or gate oxide damage in 100BASE-TX magnetics drivers. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Across motor terminals or H-bridge power FETs to absorb inductive energy during PWM switching transitions. Use Value: Absorbs 600 W peak energy without failure, extending MOSFET lifetime and eliminating need for snubber RC networks. |
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 | 400 W PPPM, SMA package (smaller footprint, higher RθJA = 140 °C/W), VC = 129 V at 3.1 A | Limited to lower-energy transients; not AEC-Q101 qualified | Select for cost-sensitive consumer designs where 600 W headroom and automotive qualification are unnecessary |
| SMCJ90CA | 1500 W PPPM, SMC package (larger 7.11 mm × 6.22 mm), VC = 129 V at 11.7 A, same VBR range | Higher surge capacity but requires more PCB area; suited for primary-level protection | Choose when system-level surge testing exceeds IEC 61000-4-5 Level 4 (4 kV line-earth) and secondary clamping is insufficient |
Compared with SMAJ90CA and SMCJ90CA, the P6SMB91CAHM3_A/I provides optimal balance of 600 W surge capability, AEC-Q101 qualification, and SMB footprint - making it the preferred choice for mid-tier automotive and industrial applications requiring verified reliability without over-engineering package size or power rating.
Availability
P6SMB91CAHM3_A/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom line card prototyping requiring stable component supply, long-term lifecycle support, and traceable halogen-free sourcing.
Supply support for P6SMB91CAHM3_A/I 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, precision, and automotive-grade qualification.
The P6SMB series was engineered specifically for robust, high-power transient suppression in space-constrained surface-mount applications - targeting automotive, industrial control, and communications infrastructure where consistent clamping performance and process compatibility are mandatory.
FAQ
What does the "CA" suffix indicate in P6SMB91CAHM3_A/I?
The "CA" suffix denotes a bidirectional configuration: the P6SMB91CAHM3_A/I conducts identically in both polarities, with matched breakdown (86.5–95.5 V) and clamping (125 V) characteristics in either direction. This eliminates polarity concerns during placement and supports AC-coupled or differential signal line protection - unlike unidirectional "A" variants that require cathode alignment.
Is P6SMB91CAHM3_A/I suitable for automotive applications?
Yes - the HM3 suffix confirms P6SMB91CAHM3_A/I is halogen-free, RoHS-compliant, and AEC-Q101 qualified. It has passed stress tests including temperature cycling, high-temperature reverse bias (HTRB), and unbiased highly accelerated stress testing (UHAST), meeting requirements for under-hood and body-control module deployments per ISO/TS 16949 quality systems.
What is the maximum operating temperature for P6SMB91CAHM3_A/I?
The P6SMB91CAHM3_A/I has a specified junction temperature range of –65 °C to +150 °C. At ambient temperatures up to +125 °C, its power derating curve (Fig. 2 in datasheet 88370) allows ≥50% of rated 600 W peak pulse power, supporting use in engine control units, transmission control modules, and other high-thermal-load automotive environments.
How does the clamping voltage of P6SMB91CAHM3_A/I compare to its breakdown voltage?
The P6SMB91CAHM3_A/I has a typical breakdown voltage VBR of 91 V (min 86.5 V, max 95.5 V) and a maximum clamping voltage VC of 125 V at 4.8 A IPPM. This yields a clamping ratio of ~1.31, indicating tight voltage control during surge events - significantly lower than many competing TVS diodes and critical for protecting 100 V-rated downstream components.
What PCB pad layout is recommended for P6SMB91CAHM3_A/I?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad per terminal for P6SMB91CAHM3_A/I to achieve rated 600 W pulse power. The recommended mounting pad layout (page 5 of datasheet 88370) uses 0.086" (2.18 mm) min. pad width and 0.220" (5.59 mm) reference length - ensuring adequate thermal dissipation and mechanical reliability during reflow and thermal cycling.
P6SMB91CAHM3_A/I 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:
- 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_A/I FAQ
1.How can I place an order for P6SMB91CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB91CAHM3_A/I 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_A/I reliable?
The price and inventory of P6SMB91CAHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB91CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB91CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB91CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB91CAHM3_A/I?
P6SMB91CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB91CAHM3_A/I 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_A/I?
For technical support, including P6SMB91CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB91CAHM3_A/I requirements.
6.How does Aetrix verify that P6SMB91CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB91CAHM3_A/I 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_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB91CAHM3_A/I?
All P6SMB91CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB91CAHM3_A/I, 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_A/I part is unused and in its original packaging.
Return procedure for P6SMB91CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB91CAHM3_A/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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