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Vishay General Semiconductor - Diodes Division 1.5SMC180A-M3/9AT
- Part No.:
- 1.5SMC180A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC180A-M3/9AT.pdf
- Description:
- TVS DIODE 154VWM 246VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,535
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Product details
Overview
1.5SMC180A-M3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 154 V standoff voltage (VWM), 171–189 V breakdown voltage (VBR) at 1 mA, 246 V maximum clamping voltage (VC) at 6.1 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial motor drives, and telecom line protection.
For engineers reviewing the 1.5SMC180A-M3/9AT datasheet, 1.5SMC180A-M3/9AT pinout, 1.5SMC180A-M3/9AT application, or 1.5SMC180A-M3/9AT equivalent, key selection criteria include clamping performance under 10/1000 µs transients, unidirectional polarity marking, SMC (DO-214AB) package thermal resistance (RθJA = 75 °C/W), and halogen-free RoHS compliance per M3 suffix.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse-biased voltage exceeds VBR, it avalanches to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown and low leakage (<1 µA at VWM), while the low incremental surge resistance enables rapid energy absorption without thermal runaway.
The device is rated for repetitive 10/1000 µs pulses at 0.01% duty cycle and supports peak forward surge current of 200 A (8.3 ms half-sine). Junction temperature range spans –65 °C to +150 °C, and it meets J-STD-020 MSL Level 1 with 260 °C reflow peak, making it suitable for automated SMT assembly in high-reliability applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 154 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 171–189 V at 1 mA - Voltage at which avalanche conduction initiates; tight tolerance ensures predictable turn-on behavior. |
| VC (Clamping) | 246 V at IPPM = 6.1 A - Maximum voltage seen by protected circuit during 10/1000 µs surge; critical for IC/MOSFET survivability. |
| PPPM | 1500 W - Peak pulse power handling with 10/1000 µs waveform; determines surge energy absorption capacity. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on standard 8.0 mm × 8.0 mm copper pads; guides PCB thermal design. |
| TJ max. | +150 °C - Maximum junction temperature; sets upper limit for ambient + self-heating in continuous operation. |
| Package | SMC (DO-214AB) - Surface-mount package with 2.06 mm height and 7.75 mm length; optimized for automated placement and thermal dissipation. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, unidirectional configuration with cathode band marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased anode connection point | Connected to protected line; conducts during overvoltage to shunt current to ground. |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return; completes clamping current path. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables protection against severe lightning-induced surges (IEC 61000-4-5 Level 4) on DC power rails and signal lines. |
| 246 V clamping at 6.1 A | Limits voltage stress on 200 V-rated MOSFETs or 250 V capacitors during transient events, preserving component lifetime. |
| Halogen-free, RoHS-compliant (M3) | Meets environmental compliance requirements for automotive and industrial OEMs without compromising surge robustness. |
| MSL Level 1, 260 °C reflow | Supports lead-free reflow soldering without preconditioning; eliminates moisture sensitivity concerns in production. |
| AEC-Q101 qualified option | Available in HE3/HM3 variants for automotive applications; this M3 variant is commercial-grade but shares core TVS structure. |
Applications
| Automotive Sensor Protection | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and position sensors from load-dump and inductive switching transients in 12 V/24 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between sensor supply rail and chassis ground to clamp transients before they reach ASIC inputs. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V interface ICs by limiting voltage to ≤246 V during 100 V/100 ms load dump events. |
Use Scenario: Safeguarding IGBT gate drivers and MCU power supplies against commutation spikes in variable-frequency drives. IC Role / Device Role / Timing Role: Mounted across DC link capacitor terminals to absorb regenerative energy spikes during rapid motor deceleration. Use Value: Maintains <154 V DC bus stability during 1500 W surge events, avoiding false overvoltage shutdowns in control logic. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Shielding Ethernet PHYs and PoE controllers from ESD and induced surges on RJ45 ports in enterprise switches. IC Role / Device Role / Timing Role: Paired with common-mode chokes to suppress differential-mode transients on data pairs while maintaining signal integrity. Use Value: Achieves IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) and IEC 61000-4-5 (2 Ω source, 1 kV surge) compliance. |
Use Scenario: Clamping output overvoltage in 12 V/24 V wall adapters due to feedback loop failure or rectifier short. IC Role / Device Role / Timing Role: Connected between secondary-side output and ground to prevent >246 V from reaching USB-PD or legacy device inputs. Use Value: Limits fault voltage to safe levels for downstream USB-C controllers and Type-A port protection ICs during open-loop conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180A-E3/52T | Lower PPPM (600 W), same VWM/VC profile, SMB package (smaller footprint, higher RθJA). | Preferred for space-constrained consumer electronics where 600 W surge margin suffices. | Select when board area is limited and surge threat level is moderate (e.g., IEC 61000-4-5 Level 2). |
| 1.5KE180A | Through-hole DO-201 package, identical electrical specs but incompatible mounting and thermal profile. | Used in legacy industrial controls requiring manual assembly or high-vibration mechanical retention. | Choose only if SMT is unavailable or mechanical robustness outweighs thermal performance needs. |
Compared with SMBJ180A-E3/52T, the 1.5SMC180A-M3/9AT delivers 2.5× higher surge power handling and better thermal dissipation; versus 1.5KE180A, it enables automated manufacturing and tighter layout control but requires SMT process validation.
Availability
1.5SMC180A-M3/9AT is available at Aetrix Electronics and suitable for automotive sensor modules, industrial motor drives, and telecom infrastructure requiring stable component supply, halogen-free compliance, and repeatable 1500 W surge immunity.
Supply support for 1.5SMC180A-M3/9AT 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 1.5SMC Series targets high-energy transient suppression in harsh environments, engineered for automotive, industrial, and telecom applications where consistent clamping and long-term stability under surge stress are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC180A-M3/9AT under a 10/1000 µs surge?
The 1.5SMC180A-M3/9AT has a maximum clamping voltage (VC) of 246 V at a peak pulse current (IPPM) of 6.1 A with a 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88303 and defines the upper voltage limit imposed on protected circuitry during standardized surge events.
Is the 1.5SMC180A-M3/9AT suitable for automotive applications?
The 1.5SMC180A-M3/9AT is halogen-free and RoHS-compliant but is designated as commercial grade (M3 suffix). For AEC-Q101-qualified automotive use, Vishay offers the HM3 variant (e.g., 1.5SMC180AHM3_A/I); the 1.5SMC180A-M3/9AT itself is not AEC-Q101 certified and should be validated per application requirements.
What does the "M3" suffix indicate in 1.5SMC180A-M3/9AT?
The "M3" suffix in 1.5SMC180A-M3/9AT denotes halogen-free, RoHS-compliant construction meeting JEDEC J-STD-020 MSL Level 1 and JESD 201 Class 2 whisker resistance. It distinguishes this commercial-grade variant from E3 (standard RoHS) and HM3 (AEC-Q101 + halogen-free) versions.
How is polarity identified on the 1.5SMC180A-M3/9AT?
The 1.5SMC180A-M3/9AT is unidirectional and marked with a cathode band at one end of the SMC (DO-214AB) package. The banded terminal is the cathode and must be connected toward the side of the circuit to be protected; the opposite terminal is the anode, typically grounded.
What is the thermal resistance of the 1.5SMC180A-M3/9AT?
The 1.5SMC180A-M3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal, as specified in the Vishay datasheet. This value assumes standard PCB layout and is critical for calculating junction temperature rise under sustained power dissipation.
1.5SMC180A-M3/9AT 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:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC180A-M3/9AT FAQ
1.How can I place an order for 1.5SMC180A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC180A-M3/9AT 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 1.5SMC180A-M3/9AT reliable?
The price and inventory of 1.5SMC180A-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC180A-M3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC180A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC180A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC180A-M3/9AT?
1.5SMC180A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC180A-M3/9AT 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 1.5SMC180A-M3/9AT?
For technical support, including 1.5SMC180A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC180A-M3/9AT requirements.
6.How does Aetrix verify that 1.5SMC180A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC180A-M3/9AT 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 1.5SMC180A-M3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC180A-M3/9AT?
All 1.5SMC180A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC180A-M3/9AT, 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 1.5SMC180A-M3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC180A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC180A-M3/9AT Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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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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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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