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Vishay General Semiconductor - Diodes Division 1.5SMC480A-M3/9AT
- Part No.:
- 1.5SMC480A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC480A-M3/9AT.pdf
- Description:
- TVS DIODE 408VWM 658VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,560
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Product details
Overview
1.5SMC480A-M3/9AT 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 480 V breakdown voltage (VBR min/max = 456–504 V), 1500 W peak pulse power (10/1000 μs), clamping voltage of 658 V at 2.28 A, and operates across –65 °C to +150 °C junction temperature. It is used to protect MOSFETs, IGBTs, and industrial power supplies against lightning-induced transients and inductive switching spikes.
For engineers reviewing the 1.5SMC480A-M3/9AT datasheet, 1.5SMC480A-M3/9AT pinout, 1.5SMC480A-M3/9AT application, or 1.5SMC480A-M3/9AT equivalent, key selection criteria include standoff voltage (408 V), clamping performance under 10/1000 μs surge, thermal resistance (75 °C/W), RoHS/halogen-free compliance (M3 suffix), and SMC (DO-214AB) package compatibility with automated assembly.
Technical Context
This TVS diode uses a glass-passivated silicon junction to achieve fast response time (<1 ns), low incremental surge resistance, and stable clamping behavior under repetitive 10/1000 μs transients at 0.01% duty cycle. Its unidirectional polarity-marked by a cathode band-enables integration into DC-biased circuits where reverse conduction must be blocked.
The device is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine), dissipates 6.5 W continuously on an infinite heatsink at 50 °C, and meets J-STD-020 MSL Level 1 with 260 °C reflow peak. Its thermal resistance (RθJA = 75 °C/W) reflects standard SMC mounting on 8.0 mm × 8.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 456 V / 504 V - Ensures reliable triggering above system operating voltage while maintaining margin against false clamping. |
| VWM | 408 V - Maximum continuous reverse standoff voltage; defines upper limit of normal DC operating range before leakage rises. |
| VC @ IPPM | 658 V - Clamped voltage during 1500 W surge; determines maximum stress imposed on protected downstream components. |
| IPPM | 2.28 A - Peak pulse current corresponding to 1500 W at 658 V; validates energy-handling capability under standardized waveform. |
| PPPM | 1500 W - Peak pulse power rating with 10/1000 μs waveform; certifies robustness against lightning and load-switching surges. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in high-ambient industrial and automotive under-hood environments. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on recommended pad layout; informs PCB copper area requirements for thermal management. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by a band on the body; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connects to protected line; conducts surge current to ground when reverse voltage exceeds VBR. |
| Anode (unmarked end) | Reference/return path | Typically tied to system ground or low-impedance return; completes conduction path during clamping event. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Validated with 10/1000 μs waveform at 0.01% duty cycle-sufficient for IEC 61000-4-5 Level 4 surge immunity testing. |
| Glass passivated junction | Ensures stable VBR tolerance (±5%), low leakage (<1 μA at VWM), and long-term reliability under thermal cycling. |
| MSL Level 1, 260 °C peak | Enables single-reflow assembly without moisture sensitivity concerns-no baking required prior to SMT placement. |
| Halogen-free & RoHS-compliant (M3) | Meets environmental compliance mandates for industrial and automotive electronics; no brominated flame retardants in molding compound. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients-critical for protecting sensitive gate drivers and controllers. |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of IGBT gate drivers and DC bus sensing circuits against turn-off voltage spikes and EFT bursts. IC Role / Device Role / Timing Role: Unidirectional TVS placed across DC link or gate resistor to clamp transient overvoltage before it reaches control IC inputs. Use Value: Limits voltage excursion to ≤658 V during 2.28 A surge, preventing gate oxide rupture and ensuring >100,000-cycle reliability under repetitive switching. |
Use Scenario: Input-stage surge suppression on AC/DC front-ends handling PoE-powered equipment and base station power modules. IC Role / Device Role / Timing Role: Primary-level TVS connected between live/neutral and chassis ground to absorb lightning-induced common-mode surges. Use Value: Withstands 1500 W pulses without degradation, maintaining VWM = 408 V stability across –40 °C to +85 °C ambient-meeting GR-1089-CORE telecom immunity requirements. |
| Automotive Body Control Modules | Renewable Energy Inverters |
Use Scenario: Protection of LIN bus transceivers and microcontroller I/O pins from load-dump and jump-start transients in 24 V systems. IC Role / Device Role / Timing Role: Unidirectional TVS installed at connector interface to shunt induced surges away from signal conditioning circuitry. Use Value: Clamps within <1 ns to 658 V, preserving signal integrity during ISO 7637-2 Pulse 5a (75 V/100 ms) events-qualified to AEC-Q101 when ordered as HM3 variant. |
Use Scenario: DC-link overvoltage suppression in solar string inverters exposed to grid-switching transients and nearby lightning strikes. IC Role / Device Role / Timing Role: High-voltage TVS mounted across PV input terminals to limit transient voltage to safe levels for MPPT controller inputs. Use Value: 480 V VBR aligns with 1000 V DC system ratings; 658 V clamping ensures protected devices remain below 700 V absolute maximum rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ480A | Same VBR (456–504 V), lower PPPM = 600 W, SMB package (smaller footprint, higher RθJA = 110 °C/W). | Limited to lower-energy surges; unsuitable for IEC 61000-4-5 Level 4 or repeated 1500 W events. | Select when board space is constrained and surge threat level is ≤600 W; verify thermal derating for sustained operation. |
| 1.5KE480A | Same VBR, PPPM = 1500 W, but through-hole DO-201AE package-larger size, manual assembly only. | Not compatible with automated SMT lines; requires wave solder or hand-soldering; less suitable for high-density layouts. | Choose only if legacy through-hole design or mechanical robustness (higher IFSM = 400 A) outweighs SMT process needs. |
Compared with SMBJ480A and 1.5KE480A, the 1.5SMC480A-M3/9AT delivers identical 1500 W surge capability in a compact, automated-compatible SMC package with halogen-free compliance-making it optimal for new industrial and automotive designs requiring both high energy handling and modern manufacturing readiness.
Availability
1.5SMC480A-M3/9AT is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, automotive body control modules, and renewable energy inverters requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5SMC480A-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, rectifiers, MOSFETs, 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 industrial automation, automotive subsystems, and infrastructure power systems where robustness and repeatability are critical.
FAQ
What is the clamping voltage of the 1.5SMC480A-M3/9AT under maximum surge conditions?
The 1.5SMC480A-M3/9AT clamps to 658 V at its rated peak pulse current of 2.28 A, measured using the standardized 10/1000 μs waveform. This value is guaranteed per the Vishay datasheet and defines the maximum voltage seen by downstream components during a full 1500 W transient event. The clamping performance remains stable across its operating temperature range of –65 °C to +150 °C.
Is the 1.5SMC480A-M3/9AT suitable for automotive applications?
The 1.5SMC480A-M3/9AT itself is commercial-grade (M3 suffix), but the same 1.5SMC480A die is AEC-Q101 qualified when ordered with HM3 suffix (e.g., 1.5SMC480AHM3_B/I). For automotive use, specify the HM3 variant to ensure qualification for temperature cycling, humidity, and mechanical shock per AEC standards. The 1.5SMC480A-M3/9AT may be used in non-safety-critical automotive prototypes or aftermarket modules where formal qualification is not mandated.
What does the "M3" suffix indicate in 1.5SMC480A-M3/9AT?
The "M3" suffix in 1.5SMC480A-M3/9AT denotes halogen-free, RoHS-compliant construction with matte tin-plated leads meeting JESD 201 Class 2 whisker resistance. It confirms compliance with environmental regulations including EU RoHS Directive 2011/65/EU and absence of brominated flame retardants in the molding compound-critical for industrial and consumer electronics subject to sustainability audits.
How does the 1.5SMC480A-M3/9AT compare to bidirectional TVS diodes like 1.5SMC480CA?
The 1.5SMC480A-M3/9AT is unidirectional and intended for DC-biased lines where reverse conduction must be blocked; the 1.5SMC480CA is bidirectional and suited for AC or floating signal lines. Both share identical VBR, PPPM, and package, but the CA version has symmetric clamping in both polarities and no cathode marking. Substituting one for the other requires verifying circuit polarity and grounding topology-direct replacement is not electrically valid.
What PCB pad layout is recommended for optimal thermal performance of the 1.5SMC480A-M3/9AT?
Vishay specifies a minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad area per terminal for thermal testing. To achieve the rated RθJA = 75 °C/W and prevent thermal runaway under repeated surges, use solid internal or external copper planes connected via ≥4 thermal vias per pad (0.3 mm diameter, filled or plated). Avoid narrow traces between the device and ground plane-thermal impedance directly impacts sustained power dissipation capability.
1.5SMC480A-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):
- 408V
- Voltage - Breakdown (Min):
- 456V
- Voltage - Clamping (Max) @ Ipp:
- 658V
- Current - Peak Pulse (10/1000µs):
- 2.28A
- 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)
1.5SMC480A-M3/9AT FAQ
1.How can I place an order for 1.5SMC480A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC480A-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 1.5SMC480A-M3/9AT reliable?
The price and inventory of 1.5SMC480A-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 1.5SMC480A-M3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC480A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC480A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC480A-M3/9AT?
1.5SMC480A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC480A-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 1.5SMC480A-M3/9AT?
For technical support, including 1.5SMC480A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC480A-M3/9AT requirements.
6.How does Aetrix verify that 1.5SMC480A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC480A-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 1.5SMC480A-M3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC480A-M3/9AT?
All 1.5SMC480A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC480A-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 1.5SMC480A-M3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC480A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC480A-M3/9AT Tags
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Diodes Incorporated
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Diodes Incorporated
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