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Vishay General Semiconductor - Diodes Division 1.5SMC180AHM3/H
- Part No.:
- 1.5SMC180AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC180AHM3/H.pdf
- Description:
- TVS DIODE 154VWM 246VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,427
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Product details
Overview
1.5SMC180AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 180 V standoff voltage (VWM), 246 V clamping voltage (VC) at 6.1 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive power supplies, industrial motor drives, and telecom DC input stages.
For engineers reviewing the 1.5SMC180AHM3/H datasheet, 1.5SMC180AHM3/H pinout, 1.5SMC180AHM3/H application, or 1.5SMC180AHM3/H equivalent, key selection criteria include unidirectional polarity, SMC (DO-214AB) package compatibility, AEC-Q101 qualification status, clamping performance under repetitive surges, and thermal resistance (RθJA = 75 °C/W) for board-level thermal design.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: during transients exceeding its breakdown voltage (VBR = 171–189 V), it rapidly switches to low-impedance conduction, diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable avalanche characteristics and long-term reliability under repetitive stress.
Designed for automated SMT assembly, the device meets J-STD-020 MSL Level 1 (peak reflow 260 °C), supports 200 A non-repetitive forward surge (IFSM), and maintains operation across -65 °C to +150 °C junction temperature range - critical for under-hood automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 154 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working margin. |
| VBR (Breakdown Voltage) | 171–189 V at 1 mA test current - precise avalanche initiation threshold ensuring predictable turn-on behavior. |
| VC (Clamping Voltage) | 246 V at 6.1 A IPPM - peak voltage seen by protected circuit during full-rated 10/1000 μs surge; determines minimum IC withstand rating. |
| PPPM (Peak Pulse Power) | 1500 W - energy-handling capacity for standardized lightning/surge immunity (IEC 61000-4-5); enables single-device protection of 24/48 V systems. |
| ID (Reverse Leakage) | 1.0 μA at VWM - negligible standby power loss and minimal impact on high-impedance sensor or reference circuits. |
| TJ max. | +150 °C - allows placement near heat-generating components (e.g., MOSFETs, DC-DC converters) without derating concerns. |
| RθJA | 75 °C/W - thermal resistance from junction to ambient on standard 8 mm × 8 mm copper pads; informs PCB copper area requirements. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band; unidirectional configuration only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side (e.g., ground or return path) in unidirectional TVS configuration. |
| Cathode | Current exit terminal during reverse-biased clamping | Connected to protected line (e.g., 48 V rail); clamps to anode when transient exceeds VWM. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control units and ADAS power rails. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets IEC 61249-2-21 and JEDEC J-STD-020 standards; eliminates toxic off-gassing during reflow and end-of-life disposal. |
| 1500 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-ground) without degradation - reduces need for multi-stage protection. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (<1 ns rise time), improving protection margin for sensitive gate drivers. |
| MSL Level 1 moisture sensitivity | Zero bake requirement prior to reflow; compatible with standard SMT production lines without dry-pack handling. |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Suppresses load-dump spikes (up to 60 V, 100 ms) and alternator transients on 24 V battery-fed ECUs. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between battery rail and DC-DC input, clamping within 1 ns after overvoltage detection. Use Value: Prevents latch-up or permanent damage to buck controllers (e.g., LM5143A) and CAN transceivers exposed to ISO 7637-2 Pulse 5a. |
Use Scenario: Protects IGBT gate drivers and isolated feedback optocouplers from commutation-induced voltage spikes on 300–400 V DC bus. IC Role / Device Role / Timing Role: Mounted directly across bus terminals to clamp fast dV/dt events (>500 V/μs) before they couple into control logic. Use Value: Eliminates need for snubber RC networks, reducing BOM count and PCB area while maintaining >100 kV/μs ESD immunity. |
| Telecom DC Input Stage | Renewable Energy Charge Controller |
Use Scenario: Shields PoE-powered switch ASICs and Ethernet PHYs from induced surges on 48 V DC input derived from outdoor power sourcing equipment. IC Role / Device Role / Timing Role: First-line defense upstream of DC-DC converter; absorbs up to 1500 W for 1 ms without failure. Use Value: Enables compliance with IEC 61000-4-5 Ed. 3 (10/700 μs, 2 kV line-earth) without additional series impedance or filtering. |
Use Scenario: Guards MPPT controller inputs against lightning-induced surges on solar panel strings operating up to 1000 VDC open-circuit. IC Role / Device Role / Timing Role: Paired with higher-voltage TVS in cascade configuration; handles secondary energy dissipation after primary MOV clamping. Use Value: Extends system MTBF by preventing cumulative degradation of input capacitors and voltage-sense resistors during repeated surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ180A-E3/57T | Same VWM (154 V), lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W) | Not AEC-Q101 qualified; limited to commercial-grade consumer/industrial use | Select when space-constrained layouts prioritize size over automotive qualification and surge robustness. |
| 1.5KE180A | Through-hole DO-201 package, identical electrical specs but no halogen-free or AEC-Q101 variants | Lacks SMT compatibility and MSL Level 1 rating; unsuitable for high-volume automated assembly | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required. |
Compared with SMAJ180A-E3/57T and 1.5KE180A, the 1.5SMC180AHM3/H delivers automotive-grade reliability, halogen-free compliance, and superior thermal performance in SMT form - making it the optimal choice for production-grade automotive and industrial power systems requiring long-term surge resilience.
Availability
1.5SMC180AHM3/H is available at Aetrix Electronics and suitable for automotive electronics, industrial motor drives, telecom infrastructure, and renewable energy systems requiring stable component supply, AEC-Q101 validation, and consistent SMC package availability.
Supply support for 1.5SMC180AHM3/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, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications demanding AEC-Q101 compliance and repeatable clamping performance.
FAQ
What is the clamping voltage of the 1.5SMC180AHM3/H under full-rated surge conditions?
The 1.5SMC180AHM3/H exhibits a maximum clamping voltage (VC) of 246 V when subjected to its rated peak pulse current (IPPM) of 6.1 A with a 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88303 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Is the 1.5SMC180AHM3/H qualified for automotive applications?
Yes, the 1.5SMC180AHM3/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's 1.5SMC Series datasheet (Rev. 09-Mar-2026). It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD, making it suitable for engine control modules, body electronics, and ADAS power supplies.
What does the "HM3" suffix indicate in 1.5SMC180AHM3/H?
The "HM3" suffix in 1.5SMC180AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "H" specifies 7-inch tape-and-reel packaging (850 units per reel), while "M3" confirms compliance with JEDEC J-STD-020 MSL Level 1 and JESD 201 Class 2 whisker resistance.
Can the 1.5SMC180AHM3/H be used in bidirectional configurations?
No, the 1.5SMC180AHM3/H is strictly unidirectional, as indicated by its "A" suffix and cathode band marking. For bidirectional operation, Vishay offers the 1.5SMC180CA variant; mixing unidirectional and bidirectional types in the same design risks improper clamping or catastrophic failure during AC-coupled transients.
What is the thermal resistance of the 1.5SMC180AHM3/H, and how does it affect layout?
The 1.5SMC180AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal. To maintain TJ ≤ 150 °C under 6.5 W steady-state dissipation, designers must allocate ≥64 mm² of thermal copper per pad and avoid narrow traces that increase effective RθJA.
1.5SMC180AHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 246V
- Current - Peak Pulse (10/1000µs):
- 6.1A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
1.5SMC180AHM3/H FAQ
1.How can I place an order for 1.5SMC180AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC180AHM3/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 1.5SMC180AHM3/H reliable?
The price and inventory of 1.5SMC180AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC180AHM3/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC180AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC180AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC180AHM3/H?
1.5SMC180AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC180AHM3/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 1.5SMC180AHM3/H?
For technical support, including 1.5SMC180AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC180AHM3/H requirements.
6.How does Aetrix verify that 1.5SMC180AHM3/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC180AHM3/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 1.5SMC180AHM3/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC180AHM3/H?
All 1.5SMC180AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC180AHM3/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 1.5SMC180AHM3/H part is unused and in its original packaging.
Return procedure for 1.5SMC180AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC180AHM3/H Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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