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Vishay General Semiconductor - Diodes Division 1.5SMC480AHM3_A/I
- Part No.:
- 1.5SMC480AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC480AHM3_A/I.pdf
- Description:
- TVS DIODE 408VWM 658VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,430
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Product details
Overview
1.5SMC480AHM3_A/I 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 standoff voltage (VWM), 504 V minimum breakdown voltage (VBR), 1500 W peak pulse power (10/1000 µs), and clamps transients to 658 V at 2.28 A peak pulse current - deployed in automotive power supply rails, industrial motor drive I/O protection, and telecom DC feed lines.
For engineers reviewing the 1.5SMC480AHM3_A/I datasheet, 1.5SMC480AHM3_A/I pinout, 1.5SMC480AHM3_A/I application, or 1.5SMC480AHM3_A/I equivalent, this page delivers verified electrical specs, SMC (DO-214AB) package details, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and design-meaningful clamping behavior under repetitive lightning-surge conditions.
Technical Context
The 1.5SMC480AHM3_A/I operates as a unidirectional avalanche diode with glass-passivated junction, optimized for fast response (<1 ns) and low incremental surge resistance. Its 480 V VWM enables use on 400 V DC bus systems, while its 658 V clamping voltage at IPPM ensures MOSFET and rectifier protection during 10/1000 µs surges up to 1500 W.
Rated for -65 °C to +150 °C junction temperature, it supports automotive-grade reliability via AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, and MSL Level 1 moisture sensitivity. Thermal performance is defined by RθJL = 15 °C/W (junction-to-leads) and derating per Fig. 2 above 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 480 V - Maximum continuous reverse operating voltage before conduction; sets upper limit for protected line voltage. |
| VBR (Breakdown) | 456–504 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping) | 658 V at IPPM = 2.28 A - Peak voltage seen by downstream circuitry during 10/1000 µs surge; defines protection margin. |
| PPPM | 1500 W - Surge energy handling capacity per single 10/1000 µs waveform; validates robustness against IEC 61000-4-5 Level 4. |
| IFSM | 200 A - Non-repetitive forward surge rating (8.3 ms half-sine); supports inrush tolerance in DC power inputs. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or enclosed industrial enclosures. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on standard 8 mm × 8 mm copper pads; informs heatsinking requirements. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by band; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected line ground or low-side reference. | Defines return path during clamping; must be routed with low-inductance trace to minimize overshoot. |
| Cathode | Current exit point in forward bias; connected to protected line (e.g., 400 V DC rail). | Carries full surge current during transient; requires adequate copper area (≥8 mm × 8 mm per terminal) for thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3) | Validated for automotive powertrain and body electronics; supports PPAP and long-term reliability in harsh environments. |
| 1500 W peak pulse power | Withstands repeated 10/1000 µs surges up to 2.28 A without degradation - meets IEC 61000-4-5 Ed. 3 Class 4 immunity. |
| Glass-passivated junction | Ensures stable VBR over lifetime and humidity exposure; eliminates risk of junction corrosion in humid industrial settings. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-20; supports green manufacturing and end-of-life recycling compliance. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without baking; reduces production line complexity and cost. |
Applications
| Automotive Power Supply Protection | Industrial Motor Drive I/O |
|---|---|
Use Scenario: Protecting 400 V DC link inputs in EV onboard chargers and DC-DC converters from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed across input terminals to shunt surge energy to ground. Use Value: Clamps transients to ≤658 V within nanoseconds, preventing gate oxide rupture in 650 V SiC MOSFETs and maintaining system uptime. |
Use Scenario: Safeguarding analog sensor inputs and encoder feedback lines in servo drives exposed to commutation noise and EFT bursts. IC Role / Device Role / Timing Role: Fast-response transient suppressor on differential signal pairs (e.g., RS-485, resolver interfaces). Use Value: Limits induced voltage spikes to <700 V while adding <1 pF capacitance - preserves signal integrity at 1 MHz bandwidth. |
| Telecom DC Feed Line Protection | Renewable Energy Inverter DC Bus |
Use Scenario: Shielding PoE++ (IEEE 802.3bt) 57 V DC feed lines and control logic from lightning-induced surges on outdoor telecom cabinets. IC Role / Device Role / Timing Role: Standoff-rated TVS on primary DC input, coordinated with upstream GDT and downstream filtering. Use Value: Withstands 1500 W surges without thermal runaway, enabling single-stage protection architecture and reducing BOM count. |
Use Scenario: Guarding 1000 V-class photovoltaic string inverters' DC bus against grid-switching transients and nearby lightning strikes. IC Role / Device Role / Timing Role: High-VWM TVS used in parallel with MOVs to provide precise clamping and avoid leakage drift. Use Value: Maintains 480 V VWM stability over 1000-hour HTOL testing - prevents false triggering in high-impedance MPPT circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ480A | Same VWM (480 V) and VC (658 V), but lower PPPM (400 W); SOD-123FL package (smaller footprint, higher RθJA). | Limited to lower-energy surges (IEC 61000-4-5 Level 2); unsuitable for automotive load dump where 1500 W is required. | Select only when space constraints prohibit SMC and surge energy is confirmed ≤400 W. |
| 1.5KE480A | Through-hole DO-201AD package; identical VWM/VBR/VC/PPPM specs but no AEC-Q101 or halogen-free certification. | Not qualified for automotive; requires wave soldering; lacks MSL Level 1 reflow compatibility. | Choose for legacy through-hole designs or non-automotive industrial use where RoHS/halogen-free is not mandated. |
Compared with SMAJ480A and 1.5KE480A, the 1.5SMC480AHM3_A/I uniquely combines 1500 W surge capability, AEC-Q101 qualification, halogen-free construction, and SMC's optimized thermal pad layout - making it the only drop-in solution for new automotive and high-reliability industrial designs requiring surface-mount scalability and long-term supply continuity.
Availability
1.5SMC480AHM3_A/I is available at Aetrix Electronics and suitable for automotive power modules, industrial motor drives, telecom DC feed systems, and renewable energy inverters requiring stable component supply with guaranteed long-term availability and full traceability.
Supply support for 1.5SMC480AHM3_A/I 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 transient suppression in demanding environments - targeting automotive, industrial, and telecom applications where robustness, AEC-Q101 compliance, and precise clamping performance are mandatory.
FAQ
What is the maximum clamping voltage of the 1.5SMC480AHM3_A/I under a 10/1000 µs surge?
The 1.5SMC480AHM3_A/I clamps to a maximum of 658 V at its rated peak pulse current of 2.28 A (10/1000 µs waveform). This value is measured per Fig. 1 and Table on page 2 of Vishay Document 88303 and defines the worst-case voltage imposed on protected circuitry during standardized surge events.
Is the 1.5SMC480AHM3_A/I qualified for automotive applications?
Yes, the 1.5SMC480AHM3_A/I carries the HM3 suffix, confirming it is halogen-free, RoHS-compliant, and AEC-Q101 qualified. This certification covers stress tests including temperature cycling, HTRB, and surge endurance - validating its use in automotive powertrain and body electronics per Vishay's ordering table on page 3.
What package type does the 1.5SMC480AHM3_A/I use, and what are its key mechanical features?
The 1.5SMC480AHM3_A/I uses the SMC (DO-214AB) package: a surface-mount, low-profile case with 8.13 mm × 6.22 mm body, 3.20 mm height, and matte tin-plated leads. It meets UL 94 V-0 flammability, supports J-STD-002 solderability, and is rated MSL Level 1 for lead-free reflow up to 260 °C.
How does the 1.5SMC480AHM3_A/I differ from bidirectional variants like 1.5SMC480CA?
The 1.5SMC480AHM3_A/I is unidirectional, with cathode band marking and forward conduction capability (IFSM = 200 A), whereas 1.5SMC480CA is bidirectional and symmetrical - lacking polarity marking and forward surge rating. The 1.5SMC480AHM3_A/I is selected for DC line protection where polarity is fixed and forward surge immunity is required.
What is the thermal resistance and derating behavior of the 1.5SMC480AHM3_A/I?
The 1.5SMC480AHM3_A/I has RθJA = 75 °C/W (on 8 mm × 8 mm copper pads) and RθJL = 15 °C/W. Its peak pulse power derates linearly above 25 °C ambient per Fig. 2: at 100 °C TA, PPPM drops to ~750 W. Full derating curves are provided in Vishay Document 88303, page 4.
1.5SMC480AHM3_A/I 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):
- 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:
- 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)
1.5SMC480AHM3_A/I FAQ
1.How can I place an order for 1.5SMC480AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC480AHM3_A/I 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 1.5SMC480AHM3_A/I reliable?
The price and inventory of 1.5SMC480AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC480AHM3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC480AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC480AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC480AHM3_A/I?
1.5SMC480AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC480AHM3_A/I 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 1.5SMC480AHM3_A/I?
For technical support, including 1.5SMC480AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC480AHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC480AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC480AHM3_A/I 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 1.5SMC480AHM3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC480AHM3_A/I?
All 1.5SMC480AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC480AHM3_A/I, 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 1.5SMC480AHM3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC480AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC480AHM3_A/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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