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Vishay General Semiconductor - Diodes Division P6SMB180CAHM3/I
- Part No.:
- P6SMB180CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB180CAHM3/I.pdf
- Description:
- TVS DIODE 154VWM 246VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,937
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Product details
Overview
P6SMB180CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 180 V standoff voltage (VWM), 207 V minimum breakdown voltage (VBR), and 600 W peak pulse power (10/1000 μs). It provides clamping protection for signal lines and power rails in automotive sensor interfaces, industrial I/O modules, and telecom power supplies.
For engineers reviewing the P6SMB180CAHM3/I datasheet, P6SMB180CAHM3/I pinout, P6SMB180CAHM3/I application, or P6SMB180CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 246 V maximum clamping voltage at 2.4 A IPPM, low thermal resistance (RθJL = 20 °C/W), and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical reverse/forward conduction behavior due to its bidirectional construction. It responds within <1 ns to transients and maintains stable clamping performance across -65 °C to +150 °C junction temperature range.
Designed for placement on PCB copper pads (0.2" × 0.2"), it leverages glass-passivated junction technology and meets MSL Level 1 (260 °C reflow peak). Its 100 °C/W junction-to-ambient thermal resistance requires careful layout for sustained 5.0 W power dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 180 V - Maximum continuous reverse voltage before clamping initiates; defines operating margin below breakdown. |
| VBR (Breakdown min) | 207 V - Minimum voltage at which device enters avalanche conduction at 1 mA test current; ensures predictable turn-on threshold. |
| VC (Clamping max) | 246 V - Maximum voltage seen across terminals during 2.4 A peak pulse (10/1000 μs); determines protected circuit's worst-case overvoltage stress. |
| PPPM | 600 W - Peak transient power handling under standardized 10/1000 μs waveform; validates robustness against lightning-induced surges. |
| TJ max | +150 °C - Maximum allowable junction temperature; supports operation in under-hood automotive and high-ambient industrial environments. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with automated pick-and-place and reflow soldering. |
| Compliance | AEC-Q101 qualified & halogen-free RoHS (HM3 suffix); certified for automotive-grade reliability and environmental safety. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; polarity-unmarked for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; symmetrical with cathode in bidirectional mode | Enables clamping during positive or negative transients without polarity dependency; eliminates orientation constraints during assembly. |
| Cathode | Current exit terminal in forward bias; symmetrical with anode in bidirectional mode | Provides identical clamping response for both voltage polarities; simplifies PCB routing in AC-coupled or floating signal paths. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Equal VBR and VC performance for ± polarity transients; eliminates need for dual unidirectional devices in differential or AC lines. |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces; supports long-term reliability under thermal cycling and vibration. |
| 600 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 surge (4 kV line-earth) when properly mounted on 5.0 mm × 5.0 mm copper pads. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response); critical for protecting high-speed logic and analog front-ends. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile (peak 260 °C); reduces manufacturing handling complexity and cost. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load dump and ESD events in vehicle cabin modules. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across differential bus lines to limit transient overvoltage without disrupting signal integrity. Use Value: Maintains 246 V clamping ceiling at 2.4 A pulse, ensuring transceiver ICs remain within absolute maximum ratings during ISO 7637-2 Pulse 5a tests. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Standoff-rated suppressor installed between input terminal and ground to shunt inductive energy before reaching optocoupler input stage. Use Value: 180 V VWM allows full utilization of 24 V nominal supply headroom while clamping to 246 V-well below 300 V isolation barrier limits of industrial optocouplers. |
| Telecom Power Rail Protection | Consumer Appliance Motor Control |
Use Scenario: Shielding 48 V PoE-powered Ethernet switch ports from lightning-induced surges entering via Ethernet cables. IC Role / Device Role / Timing Role: Primary-level TVS on secondary-side DC output rail, coordinated with upstream GDT and downstream π-filter. Use Value: 600 W PPPM rating enables absorption of 10/1000 μs surges up to 2.4 A without degradation, meeting IEC 61000-4-5 Ed.3 requirements. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, blenders). IC Role / Device Role / Timing Role: Clamp connected across motor terminals to divert inductive kickback energy away from H-bridge MOSFETs and microcontroller GPIOs. Use Value: Glass-passivated junction ensures stable clamping after repeated 100 A IFSM surges; SMB package fits tight motor driver board layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ180CA | Same VWM (180 V) and bidirectional configuration, but lower PPPM (400 W) and higher VC (270 V at 2.2 A) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 compliance without derating | Select when cost sensitivity outweighs peak surge margin and board space permits larger footprint than SMB |
| 1.5KE180CA | Higher PPPM (1500 W), axial lead TO-218 package, VWM = 180 V, VC = 259 V at 5.8 A | Requires through-hole assembly and larger PCB area; better for high-reliability power supply inputs | Choose for legacy designs needing proven high-energy clamping where SMT is not mandatory |
Compared with SMAJ180CA and 1.5KE180CA, P6SMB180CAHM3/I delivers optimal balance of 600 W surge capacity, compact SMB footprint, AEC-Q101 qualification, and halogen-free compliance-making it the preferred choice for new automotive and industrial SMT designs requiring validated reliability and regulatory alignment.
Availability
P6SMB180CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom power rail protection requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for P6SMB180CAHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems, combining AEC-Q101 qualification, robust surge handling, and surface-mount scalability for next-generation electronics protection.
FAQ
What is the clamping voltage of P6SMB180CAHM3/I at its rated peak pulse current?
The P6SMB180CAHM3/I has a maximum clamping voltage (VC) of 246 V at 2.4 A peak pulse current (IPPM), measured under the standard 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuits during surge events and is confirmed in the Vishay datasheet Document Number 88370, page 2. The low clamping ratio (VC/VWM ≈ 1.37) reflects efficient transient energy diversion without overstressing downstream ICs.
Is P6SMB180CAHM3/I suitable for automotive applications?
Yes, P6SMB180CAHM3/I is AEC-Q101 qualified (denoted by the HM3 suffix) and specifically designed for automotive use cases including engine control units, body electronics, and ADAS sensor interfaces. Its construction includes halogen-free, RoHS-compliant materials, MSL Level 1 rating for reflow compatibility, and guaranteed operation from -65 °C to +150 °C junction temperature-meeting stringent automotive environmental and reliability requirements.
How does the bidirectional design of P6SMB180CAHM3/I affect PCB layout?
The bidirectional design of P6SMB180CAHM3/I eliminates polarity marking-no cathode band is present-so it can be placed in either orientation across differential or AC-coupled signal lines. This simplifies PCB layout, reduces assembly errors, and avoids the need for duplicate unidirectional devices in balanced interfaces like RS-485 or CAN. Layout must still follow Vishay's recommended 0.2" × 0.2" copper pad dimensions to maintain thermal and surge performance.
What is the thermal resistance of P6SMB180CAHM3/I, and why does it matter?
P6SMB180CAHM3/I has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W and junction-to-ambient (RθJA) of 100 °C/W. RθJL is critical because it determines how effectively heat from transient power dissipation transfers to the PCB copper; maintaining low thermal impedance via proper pad sizing prevents junction overheating during repetitive surges. Exceeding TJ max (+150 °C) risks parametric drift or failure.
Can P6SMB180CAHM3/I replace a unidirectional TVS in an existing design?
P6SMB180CAHM3/I is bidirectional and cannot directly replace a unidirectional TVS (e.g., P6SMB180A) in circuits relying on DC blocking or polarity-sensitive clamping-such as DC power rail protection where forward conduction must be avoided. However, it is a drop-in replacement for other bidirectional variants (e.g., P6SMB180CAC) with identical VWM, VBR, and package. Always verify system-level polarity requirements before substitution.
P6SMB180CAHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 246V
- Current - Peak Pulse (10/1000µs):
- 2.4A
- 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)
P6SMB180CAHM3/I FAQ
1.How can I place an order for P6SMB180CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB180CAHM3/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 P6SMB180CAHM3/I reliable?
The price and inventory of P6SMB180CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB180CAHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB180CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB180CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB180CAHM3/I?
P6SMB180CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB180CAHM3/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 P6SMB180CAHM3/I?
For technical support, including P6SMB180CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB180CAHM3/I requirements.
6.How does Aetrix verify that P6SMB180CAHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB180CAHM3/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 P6SMB180CAHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB180CAHM3/I?
All P6SMB180CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB180CAHM3/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 P6SMB180CAHM3/I part is unused and in its original packaging.
Return procedure for P6SMB180CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB180CAHM3/I Tags
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DESD3V3E1BL-7B
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