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Vishay General Semiconductor - Diodes Division 1.5SMC180AHE3/9AT
- Part No.:
- 1.5SMC180AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC180AHE3/9AT.pdf
- Description:
- TVS DIODE 154VWM 246VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:4,116
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Product details
Overview
1.5SMC180AHE3/9AT 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 180 V standoff voltage (VWM), 246 V clamping voltage (VC) at 6.1 A peak pulse current, and 1500 W peak pulse power capability with 10/1000 μs waveform - deployed in automotive power supplies and industrial motor control inputs.
For engineers reviewing the 1.5SMC180AHE3/9AT datasheet, 1.5SMC180AHE3/9AT pinout, 1.5SMC180AHE3/9AT application, or 1.5SMC180AHE3/9AT equivalent, key selection criteria include unidirectional polarity, SMC (DO-214AB) package compatibility, AEC-Q101 qualification status, and clamping performance under repetitive surge conditions.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds its breakdown threshold (171–189 V), it rapidly transitions to low-impedance conduction to divert surge energy away from downstream circuitry. Its glass-passivated junction ensures stable leakage (<1 μA at 154 V) and fast response time (<1.0 ns).
Thermal design relies on RθJA = 75 °C/W and RθJL = 15 °C/W, requiring minimum 8.0 mm × 8.0 mm copper pads per terminal for rated 1500 W pulse handling. The device is rated for -65 °C to +150 °C operating junction temperature and meets J-STD-020 MSL Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 154 V - maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping onset |
| VBR (Breakdown Voltage) | 171–189 V at 1 mA - precise voltage threshold where avalanche conduction initiates; tight 5.3% tolerance enables predictable protection timing |
| VC (Clamping Voltage) | 246 V at IPPM = 6.1 A - maximum voltage seen by protected circuit during full-rated 10/1000 μs surge; critical for IC-level survivability |
| PPPM (Peak Pulse Power) | 1500 W - surge energy handling capacity with standard 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 compliance |
| ID (Reverse Leakage) | <1 μA at 154 V - ultra-low leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits |
| TJ max. | +150 °C - enables use in under-hood automotive environments and thermally constrained industrial enclosures |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic case with matte tin-plated leads; dimensions 7.75 mm × 6.22 mm × 2.62 mm (L × W × H); UL 94 V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane; completes shunt path for transient energy dissipation |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables single-device protection against severe lightning-induced surges per IEC 61000-4-5, eliminating need for cascaded protection stages |
| Glass passivated junction | Ensures long-term parameter stability and low leakage drift across temperature and lifetime, critical for automotive field reliability |
| AEC-Q101 qualification | Validates suitability for automotive powertrain and body electronics applications requiring zero-defect reliability and extended temperature operation |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., inductive switch-off), improving protection margin for sensitive MOSFET gates |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Power Input Protection | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs from load dump and alternator transients up to ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between battery rail and ground, clamping spikes within 1 ns to prevent regulator or MCU damage. Use Value: Withstands 1500 W pulses while maintaining clamping voltage ≤246 V - well below 300 V absolute max rating of typical automotive DC/DC controllers. |
Use Scenario: Safeguarding IGBT gate drivers and bus voltage monitors in variable-frequency drives subjected to switching-induced dv/dt noise and regeneration surges. IC Role / Device Role / Timing Role: Mounted across DC bus rails to clamp commutation spikes before they propagate to control logic or sensors. Use Value: Low thermal resistance (RθJL = 15 °C/W) allows rapid heat dissipation during repetitive 100 Hz surge events common in PWM-driven motors. |
| Telecom Line Interface Protection | Consumer Appliance Power Supply Input |
Use Scenario: Shielding PoE-powered Ethernet ports and base station RF front-end bias lines from induced surges during nearby lightning strikes. IC Role / Device Role / Timing Role: Unidirectional TVS on DC bias feed lines to active antennas or remote PHYs, referenced to local ground. Use Value: 1 μA leakage at 154 V prevents loading of high-impedance bias networks, preserving signal-to-noise ratio in RF paths. |
Use Scenario: Securing AC-DC adapter primary-side rectifier outputs and secondary-side 12/24 V rails in washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Shunt protector on bulk capacitor input to absorb inductive kickback from relay coils and fan motors. Use Value: AEC-Q101 qualification provides extended lifetime assurance beyond standard commercial-grade TVS, reducing field failure risk in 10+ year appliances. |
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 | Same VWM (180 V) and VC (246 V), but lower PPPM (600 W); SMB package (smaller footprint, higher RθJA) | Limited to lower-energy surges (IEC 61000-4-5 Level 2); unsuitable for automotive load dump or industrial motor drive spikes | Select only when space constraints prohibit SMC and surge energy is confirmed ≤600 W |
| 1.5KE180A | Same electrical specs but axial-leaded DO-201 package; no AEC-Q101 qualification; higher mounting inductance | Not suitable for automated SMT production or high-frequency surge environments; requires manual assembly and board real estate | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ180A and 1.5KE180A, the 1.5SMC180AHE3/9AT delivers superior surge robustness (1500 W vs. 600 W or axial-limited derating), automotive-grade reliability via AEC-Q101, and optimized thermal performance for high-volume SMT manufacturing - making it the preferred choice for mission-critical 24 V systems.
Availability
1.5SMC180AHE3/9AT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial motor drives, telecom infrastructure power interfaces, and consumer appliance power supplies requiring stable component supply and AEC-Q101-compliant surge protection.
Supply support for 1.5SMC180AHE3/9AT 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, 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 where compact size, repeatable clamping, and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC180AHE3/9AT at its rated peak pulse current?
The 1.5SMC180AHE3/9AT has a maximum clamping voltage (VC) of 246 V at its rated peak pulse current (IPPM) of 6.1 A, measured using the standard 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range and ensures protected circuitry remains below critical voltage thresholds during surge events. The 1.5SMC180AHE3/9AT achieves this with low incremental surge resistance, minimizing overshoot during fast transients.
Is the 1.5SMC180AHE3/9AT qualified for automotive applications?
Yes, the 1.5SMC180AHE3/9AT is AEC-Q101 qualified, as indicated by the "HE3" suffix in its part number. It has undergone stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD per AEC-Q101 Rev D. This qualification confirms its suitability for automotive powertrain, body electronics, and infotainment systems where reliability under thermal and mechanical stress is essential. The 1.5SMC180AHE3/9AT is explicitly listed in Vishay's AEC-Q101 qualified product matrix.
What package type does the 1.5SMC180AHE3/9AT use, and what are its key mechanical features?
The 1.5SMC180AHE3/9AT uses the SMC (DO-214AB) surface-mount package: 7.75 mm × 6.22 mm × 2.62 mm, with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Its molding compound meets UL 94 V-0 flammability rating, and it is rated MSL Level 1 (peak reflow 260 °C). The cathode is marked by a band, and the device is designed for automated placement and reflow soldering. The 1.5SMC180AHE3/9AT's thermal resistance values (RθJA = 75 °C/W, RθJL = 15 °C/W) assume use of 8.0 mm × 8.0 mm copper pads per terminal.
How does the 1.5SMC180AHE3/9AT differ from bidirectional TVS diodes like 1.5SMC180CA?
The 1.5SMC180AHE3/9AT is unidirectional and functions only in reverse-bias avalanche mode, with polarity-sensitive cathode/anode terminals - ideal for DC rail protection where forward conduction must be blocked. In contrast, 1.5SMC180CA is bidirectional and symmetrical, conducting in both directions, making it suitable for AC lines or differential signal protection. The 1.5SMC180AHE3/9AT offers tighter VBR tolerance (±5.3%) and AEC-Q101 qualification, whereas 1.5SMC180CA lacks automotive qualification and exhibits higher leakage in one direction due to asymmetry.
What is the maximum operating temperature and thermal resistance of the 1.5SMC180AHE3/9AT?
The 1.5SMC180AHE3/9AT has a maximum junction temperature (TJ max.) of +150 °C and specified thermal resistances of RθJA = 75 °C/W (junction-to-ambient, on recommended pad layout) and RθJL = 15 °C/W (junction-to-leads). These values assume mounting on 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal. The 1.5SMC180AHE3/9AT's thermal performance enables reliable operation in under-hood automotive environments and enclosed industrial drives without forced cooling.
1.5SMC180AHE3/9AT 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:
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC180AHE3/9AT FAQ
1.How can I place an order for 1.5SMC180AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC180AHE3/9AT 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 1.5SMC180AHE3/9AT reliable?
The price and inventory of 1.5SMC180AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC180AHE3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC180AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC180AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC180AHE3/9AT?
1.5SMC180AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC180AHE3/9AT 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 1.5SMC180AHE3/9AT?
For technical support, including 1.5SMC180AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC180AHE3/9AT requirements.
6.How does Aetrix verify that 1.5SMC180AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC180AHE3/9AT 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 1.5SMC180AHE3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC180AHE3/9AT?
All 1.5SMC180AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC180AHE3/9AT, 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 1.5SMC180AHE3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC180AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC180AHE3/9AT Tags
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