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Vishay General Semiconductor - Diodes Division P6SMB180CAHM3/H
- Part No.:
- P6SMB180CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB180CAHM3/H.pdf
- Description:
- TVS DIODE 154VWM 246VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,924
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Product details
Overview
P6SMB180CAHM3/H 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 automotive-grade sensor signal lines, power rails, and I/O interfaces against ESD and inductive switching transients.
For engineers reviewing the P6SMB180CAHM3/H datasheet, P6SMB180CAHM3/H pinout, P6SMB180CAHM3/H application, or P6SMB180CAHM3/H equivalent, this AEC-Q101 qualified, halogen-free, RoHS-compliant TVS offers verified bidirectional clamping performance, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for automotive electronics, industrial control modules, and telecom interface protection.
Technical Context
The P6SMB180CAHM3/H operates as a symmetric bidirectional avalanche diode, with identical electrical characteristics in both polarities. Its glass-passivated junction enables fast response time (<1 ns) and stable clamping under repetitive 10/1000 μs surges at 0.01% duty cycle.
Designed for surface-mount assembly on standard PCB copper pads (0.2" × 0.2"), it delivers 246 V maximum clamping voltage (VC) at 2.4 A peak pulse current (IPPM), with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 180 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 207–231 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering during overvoltage events without premature conduction. |
| VC (Clamping Voltage) | 246 V at IPPM = 2.4 A - Peak voltage seen by protected circuit during 10/1000 μs transient; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy-handling capability per IEEE C62.35 10/1000 μs waveform; supports robust surge immunity in automotive environments. |
| TJ max. | 150 °C - Maximum junction temperature rating; enables operation in under-hood or high-ambient industrial settings with proper thermal design. |
| Package | SMB (DO-214AA) - Low-profile surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with automated pick-and-place and reflow soldering. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronic systems per stress test requirements including HTOL, TCT, and ESD; suffix HM3 denotes qualification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional device with no polarity marking. Cathode/anode terminals are symmetrical; device functions identically in either orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity event) | One terminal of symmetrical PN junction; conducts when voltage at this terminal falls >VBR below cathode potential. |
| Cathode | Transient current entry (positive polarity event) | Other terminal of symmetrical PN junction; conducts when voltage at this terminal rises >VBR above anode potential. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates need for polarity-aware layout in differential or AC-coupled signal paths. |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensors - ensures reliability under thermal cycling and mechanical shock. |
| Halogen-free & RoHS-compliant | HM3 suffix confirms compliance with JEDEC J-STD-201 Class 2 whisker resistance and EU RoHS Directive 2011/65/EU - supports green manufacturing requirements. |
| Low incremental surge resistance | Enables tighter clamping (VC − VBR ≈ 39 V) - reduces voltage overshoot across protected ICs compared to higher-Rsurge TVS devices. |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/60% RH - allows direct placement without baking or dry-pack handling, reducing production overhead. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across signal pair or supply rail to limit transient excursions within IC absolute maximum ratings. Use Value: With 246 V clamping at 2.4 A, P6SMB180CAHM3/H holds transients below 250 V - preserving integrity of 24 V automotive systems with 36 V max supply tolerance. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between input line and common, shunting surge energy before reaching optocoupler or Schmitt trigger input stage. Use Value: 180 V VWM provides 7.5× margin over nominal 24 V system, while 600 W PPPM handles repeated 1 kV/500 Ω surge events per IEC 61000-4-5. |
| Telecom Line Interface Protection | Power Supply Rail Clamping |
Use Scenario: Shielding RS-485 transceiver pins and Ethernet PHY magnetics from lightning-induced surges in outdoor base stations and network equipment. IC Role / Device Role / Timing Role: Bidirectional TVS mounted differential-mode across data lines or common-mode to ground, suppressing common- and differential-mode transients. Use Value: Symmetric clamping ensures equal protection for both signal polarities in full-duplex links; 246 V VC prevents latch-up in 3.3 V or 5 V transceivers powered from isolated DC/DC converters. |
Use Scenario: Clamping 24 V or 48 V intermediate bus rails in industrial power supplies against switching noise and back-EMF from motor drivers. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing short-duration overvoltage spikes caused by MOSFET turn-off or transformer leakage in SMPS stages. Use Value: 180 V VWM aligns with 24 V/48 V system derating standards (e.g., UL 60950-1), while 150 °C TJ max supports operation near heatsinks or in enclosed enclosures. |
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 (265 V at 2.1 A); SMA package (smaller footprint, higher RθJA). | Limited to lower-energy transients; unsuitable for automotive load dump where 600 W capability is required. | Select only if board space is constrained and surge energy is limited to IEC 61000-4-2 Level 4 (±15 kV contact). |
| SMCJ180CA | Higher PPPM (1500 W), same VWM and bidirectional function; larger SMC (DO-214AB) package with lower RθJA (35 °C/W). | Overqualified for cost-sensitive consumer applications; requires larger PCB area and higher assembly cost. | Choose when protecting high-power industrial drives or inverters exposed to severe lightning surges per IEC 61000-4-5 Class 3. |
Compared with SMAJ180CA and SMCJ180CA, the P6SMB180CAHM3/H uniquely balances 600 W surge capacity, AEC-Q101 qualification, and SMB footprint - making it optimal for space-constrained automotive and industrial modules requiring validated reliability without over-engineering.
Availability
P6SMB180CAHM3/H is available at Aetrix Electronics and suitable for automotive ECU designs, industrial PLC I/O modules, and telecom line interface protection requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for P6SMB180CAHM3/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, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The P6SMB Series targets surface-mount transient suppression in harsh environments, designed specifically for automotive, industrial, and telecom applications demanding AEC-Q101 validation, low-profile packaging, and repeatable clamping performance.
FAQ
What is the clamping voltage of the P6SMB180CAHM3/H at its rated peak pulse current?
The P6SMB180CAHM3/H 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 is confirmed in the Vishay datasheet (Document Number: 88370, page 2) and defines the upper voltage limit imposed on protected circuits during transient events. The P6SMB180CAHM3/H maintains this clamping performance bidirectionally, ensuring consistent protection regardless of surge polarity.
Is the P6SMB180CAHM3/H suitable for automotive applications?
Yes, the P6SMB180CAHM3/H is AEC-Q101 qualified, as indicated by the "HM3" suffix - denoting halogen-free, RoHS-compliant construction with full automotive stress testing (HTOL, TCT, ESD). It is explicitly recommended for automotive sensor units, ECUs, and infotainment systems in the Vishay P6SMB datasheet. The P6SMB180CAHM3/H meets requirements for under-hood temperature operation up to 150 °C junction temperature and withstands mechanical shock and vibration per AEC-Q101.
What does the "CA" suffix mean in P6SMB180CAHM3/H?
The "CA" suffix in P6SMB180CAHM3/H specifies a bidirectional configuration - meaning the device provides symmetrical transient suppression in both forward and reverse directions, with identical VBR, VC, and IPPM values. This differs from "A"-suffixed unidirectional parts, which have a marked cathode band and conduct only in one direction. The P6SMB180CAHM3/H has no polarity marking and is used where AC signals, differential buses, or polarity-agnostic protection is required.
What is the thermal resistance of the P6SMB180CAHM3/H?
The P6SMB180CAHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W, measured on standard 0.2" × 0.2" copper pads per JEDEC standards. These values are critical for estimating temperature rise during sustained power dissipation or repetitive surges. The P6SMB180CAHM3/H's RθJL enables effective heat transfer to PCB copper, supporting reliable operation in thermally dense layouts without additional heatsinking.
How does the P6SMB180CAHM3/H compare to unidirectional P6SMB180A variants?
The P6SMB180CAHM3/H is bidirectional with symmetric clamping, while the unidirectional P6SMB180AHM3/H conducts only from anode to cathode and requires correct polarity placement. Both share identical VWM (180 V), VBR (207–231 V), and PPPM (600 W), but the P6SMB180CAHM3/H eliminates orientation dependency - simplifying layout for differential lines or AC-coupled interfaces. The P6SMB180CAHM3/H also lacks the cathode band marking found on unidirectional versions.
P6SMB180CAHM3/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):
- 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/H FAQ
1.How can I place an order for P6SMB180CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB180CAHM3/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 P6SMB180CAHM3/H reliable?
The price and inventory of P6SMB180CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB180CAHM3/H is usually 5 days.
3.What payment methods are accepted for P6SMB180CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB180CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB180CAHM3/H?
P6SMB180CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB180CAHM3/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 P6SMB180CAHM3/H?
For technical support, including P6SMB180CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB180CAHM3/H requirements.
6.How does Aetrix verify that P6SMB180CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB180CAHM3/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 P6SMB180CAHM3/H meets industry standards.
7.What is the process for return or replacement of P6SMB180CAHM3/H?
All P6SMB180CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB180CAHM3/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 P6SMB180CAHM3/H part is unused and in its original packaging.
Return procedure for P6SMB180CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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