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Vishay General Semiconductor - Diodes Division 1.5SMC480AHM3_B/I
- Part No.:
- 1.5SMC480AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC480AHM3_B/I.pdf
- Description:
- TVS DIODE 408VWM 658VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,627
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Product details
Overview
1.5SMC480AHM3_B/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power rails 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 systems, industrial motor drives, and telecom DC supply inputs.
For engineers reviewing the 1.5SMC480AHM3_B/I datasheet, 1.5SMC480AHM3_B/I pinout, 1.5SMC480AHM3_B/I application, or 1.5SMC480AHM3_B/I equivalent, key selection criteria include its AEC-Q101 qualification, SMC (DO-214AB) package thermal performance (RθJA = 75 °C/W), unidirectional polarity with cathode band marking, and compliance with UL 497B for protector classification.
Technical Context
This TVS operates as a clamping device that enters avalanche conduction when reverse voltage exceeds VBR (456–504 V), limiting transient energy by diverting surge current away from protected circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 μA at VWM).
Designed for repetitive 10/1000 μs waveform surges at 0.01% duty cycle, it sustains 1500 W peak pulse power with derating above TA = 25 °C per Fig. 2, and handles 200 A non-repetitive forward surge (8.3 ms half-sine) - confirming suitability for inductive load switching and lightning-induced transients in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 408 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC/AC rail margin. |
| 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 - Measured peak voltage under 10/1000 μs surge; determines maximum stress on downstream ICs. |
| PPPM | 1500 W - Peak pulse power handling with 10/1000 μs waveform; validates robustness against IEC 61000-4-5 Level 4 surges. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial enclosures. |
| Package | SMC (DO-214AB) - Surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal footprint; enables automated placement and 6.5 W steady-state dissipation. |
| AEC-Q101 | Qualified - Certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMC (DO-214AB), molded case with matte tin-plated leads, UL 94 V-0 flammability rating, and polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return in unidirectional configuration; completes clamping loop during transient. |
| Cathode | Reverse-biased terminal / Protected line connection | Connected to the line being protected (e.g., 48 V bus); avalanche conduction begins here when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables single-device protection against severe transients per IEC 61000-4-5, eliminating need for cascaded TVS or MOVs. |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage (<1 μA), critical for battery-backed or low-power monitoring circuits. |
| MSL Level 1 (260 °C) | Supports lead-free reflow without moisture-related popcorning; eliminates pre-bake requirement in SMT assembly. |
| AEC-Q101 qualified (HM3 suffix) | Validates reliability for automotive power modules, ADAS ECUs, and body control units requiring zero field failures. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a), improving system immunity. |
Applications
| Automotive Power Distribution | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Protection of 48 V mild-hybrid vehicle power distribution networks against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed across main DC bus to clamp spikes up to ±120 V superimposed on nominal 48 V. Use Value: Withstands 200 A 8.3 ms surge and clamps to ≤658 V, preventing damage to gate drivers and MCU power supplies. |
Use Scenario: Safeguarding IGBT gate driver supplies and feedback sensing lines in variable-frequency AC drives. IC Role / Device Role / Timing Role: Standoff-rated TVS on isolated 24 V auxiliary supply rails to suppress coupling from high-dV/dt switching nodes. Use Value: 408 V VWM avoids false triggering during normal operation while enabling rapid response to 10/1000 μs surges. |
| Telecom DC Input Protection | Renewable Energy Charge Controller |
Use Scenario: Input stage protection for 48 V telecom rectifiers exposed to lightning-induced surges on outdoor feeder lines. IC Role / Device Role / Timing Role: Primary clamping device on DC input before bulk capacitor and DC/DC converter. Use Value: 1500 W PPPM rating meets GR-1089-CORE Level 3 requirements; UL 497B recognition supports safety certification. |
Use Scenario: Overvoltage suppression on PV array input of solar charge controllers subject to open-circuit voltage spikes. IC Role / Device Role / Timing Role: Unidirectional TVS connected between PV+ and chassis ground to shunt reverse-polarity or lightning energy. Use Value: 150 °C TJ max allows operation in unventilated outdoor enclosures; halogen-free HM3 construction meets RoHS and environmental mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ480A-E3/52 | Lower PPPM (600 W), SMB package (smaller thermal mass), RθJA = 85 °C/W | Rated for lower-energy transients; suitable for secondary protection or space-constrained PCBs | Select when board area is limited and surge threat level is ≤IEC 61000-4-5 Level 2 |
| 1.5KE480A | Through-hole DO-201 package, same VWM/VBR/VC specs, but no AEC-Q101 qualification | Lacks automotive reliability validation; not recommended for vehicular use | Choose only for cost-sensitive industrial prototypes where AEC-Q101 is not mandated |
Compared with SMBJ480A-E3/52 and 1.5KE480A, the 1.5SMC480AHM3_B/I delivers higher surge robustness (1500 W vs. 600 W or 1500 W with inferior thermal design), AEC-Q101 assurance for automotive deployment, and superior manufacturability via SMC's MSL Level 1 compatibility.
Availability
1.5SMC480AHM3_B/I is available at Aetrix Electronics and suitable for automotive power systems, industrial motor drives, telecom DC inputs, and renewable energy charge controllers requiring stable component supply and long-term lifecycle support.
Supply support for 1.5SMC480AHM3_B/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 designs and manufactures discrete semiconductors including diodes, MOSFETs, and TVS devices, with emphasis on high-reliability, high-power, and automotive-qualified components.
The 1.5SMC Series targets high-energy transient suppression in demanding environments, combining rugged packaging, AEC-Q101 qualification, and standardized 1500 W surge capability across a wide voltage range (6.8 V to 540 V).
FAQ
What is the maximum clamping voltage of the 1.5SMC480AHM3_B/I under a 10/1000 μs surge?
The 1.5SMC480AHM3_B/I clamps to a maximum of 658 V when subjected to its rated peak pulse current of 2.28 A with a 10/1000 μs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 8.0 mm × 8.0 mm copper pads) and defines the upper voltage limit imposed on protected circuitry during transient events.
Is the 1.5SMC480AHM3_B/I suitable for automotive applications?
Yes, the 1.5SMC480AHM3_B/I is AEC-Q101 qualified (indicated by the HM3 suffix), making it suitable for automotive applications such as 48 V mild-hybrid power distribution, ADAS sensor power rails, and body control module inputs. Its construction meets JESD201 Class 2 whisker resistance and MSL Level 1 reflow requirements.
What does the "B" in 1.5SMC480AHM3_B/I signify?
The "B" in 1.5SMC480AHM3_B/I denotes the revision code for AEC-Q101 qualified versions covering the 250 V to 540 V voltage range, as specified in Vishay document 88303. It identifies the device as part of the second revision batch meeting automotive reliability standards, distinct from earlier "A"-suffixed variants.
How does the SMC (DO-214AB) package of the 1.5SMC480AHM3_B/I compare thermally to SMA or SMB packages?
The SMC (DO-214AB) package of the 1.5SMC480AHM3_B/I provides lower thermal resistance than SMA or SMB: RθJA = 75 °C/W (vs. ~100–120 °C/W for SMB), enabling higher steady-state power dissipation (6.5 W) and improved surge energy handling. Its larger copper pad footprint (8.0 mm × 8.0 mm) directly enhances heat spreading during repetitive transients.
Can the 1.5SMC480AHM3_B/I be used in bidirectional configurations?
No, the 1.5SMC480AHM3_B/I is a unidirectional TVS diode, as confirmed by its "A" suffix and cathode band marking. For bidirectional operation, Vishay specifies CA-suffixed parts (e.g., 1.5SMC480CA); using this part in reverse-biased AC applications would result in forward conduction and failure.
1.5SMC480AHM3_B/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:
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC480AHM3_B/I FAQ
1.How can I place an order for 1.5SMC480AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC480AHM3_B/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_B/I reliable?
The price and inventory of 1.5SMC480AHM3_B/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_B/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC480AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC480AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC480AHM3_B/I?
1.5SMC480AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC480AHM3_B/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_B/I?
For technical support, including 1.5SMC480AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC480AHM3_B/I requirements.
6.How does Aetrix verify that 1.5SMC480AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC480AHM3_B/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_B/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC480AHM3_B/I?
All 1.5SMC480AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC480AHM3_B/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_B/I part is unused and in its original packaging.
Return procedure for 1.5SMC480AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC480AHM3_B/I Tags
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