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Vishay General Semiconductor - Diodes Division 1.5SMC480AHM3_B/H
- Part No.:
- 1.5SMC480AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC480AHM3_B/H.pdf
- Description:
- TVS DIODE 408VWM 658VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,288
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Product details
Overview
1.5SMC480AHM3_B/H 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), 658 V maximum clamping voltage (VC) at 2.28 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive power modules and industrial motor drives to protect MOSFETs and gate drivers.
For engineers reviewing the 1.5SMC480AHM3_B/H datasheet, 1.5SMC480AHM3_B/H pinout, 1.5SMC480AHM3_B/H application, or 1.5SMC480AHM3_B/H equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, SMC (DO-214AB) package dimensions, thermal resistance data, and real-world design implications for transient immunity in high-voltage DC systems.
Technical Context
This TVS operates as a unidirectional clamping device with cathode-banded polarity, leveraging glass-passivated silicon junction technology for fast response (<1 ns) and low incremental surge resistance. Its 1500 W peak pulse rating is defined under JEDEC-standard 10/1000 μs waveform conditions with 0.01% duty cycle, and it sustains repetitive surges when derated above TA = 25 °C per Fig. 2 of the datasheet.
The device is rated for TJ = -65 °C to +150 °C operation, exhibits 75 °C/W junction-to-ambient thermal resistance on standard 8.0 mm × 8.0 mm copper pads, and meets JESD201 Class 2 whisker resistance and MSL Level 1 (260 °C peak reflow). The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 408 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below system DC bus voltage. |
| VBR (Breakdown) | 456–504 V at 1 mA - Voltage range where avalanche conduction initiates; ensures reliable turn-on during overvoltage events. |
| VC (Clamping) | 658 V at IPPM = 2.28 A - Peak voltage seen by protected circuit during full-rated surge; critical for MOSFET VDSSOA compliance. |
| PPPM | 1500 W - Surge energy handling capacity with 10/1000 μs waveform; enables protection against IEC 61000-4-5 Level 4 transients. |
| RθJA | 75 °C/W - Thermal resistance on recommended pad layout; determines temperature rise under sustained power dissipation (PD = 6.5 W). |
| TJ max | +150 °C - Maximum junction temperature; sets upper limit for ambient + self-heating in enclosed automotive or industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; required for under-hood power electronics. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode identified by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground or lower-potential rail during overvoltage event. |
| Anode (unmarked end) | Reference node | Typically tied to ground or return path; completes clamping loop and defines unidirectional polarity orientation. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables robust protection against high-energy lightning-induced surges (IEC 61000-4-5) without thermal runaway on standard PCB layouts. |
| AEC-Q101 qualification | Validates reliability for automotive powertrain and chassis applications including engine control units and battery management systems. |
| Glass-passivated junction | Ensures stable leakage performance (<1 μA at VWM) and long-term stability under thermal cycling and humidity exposure. |
| Halogen-free & RoHS-compliant (HM3) | Meets EU Directive 2011/65/EU and IPC-1752A material declarations; supports green manufacturing and end-of-life compliance. |
| MSL Level 1 (260 °C) | Permits single-reflow assembly without moisture sensitivity concerns; eliminates baking requirement prior to SMT placement. |
Applications
| Automotive DC-DC Converter Input Protection | Industrial Motor Drive DC Bus Clamping |
|---|---|
Use Scenario: Protects 48 V–600 V input stage of isolated DC-DC converters in EV onboard chargers against load dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between HV+ and chassis ground; clamps transients within nanoseconds to prevent controller IC latch-up. Use Value: With 658 V clamping at 2.28 A, maintains MOSFET VDS stress below 80% rating during 100 V/50 ms load dump pulses. |
Use Scenario: Installed across DC link capacitors in 3-phase inverters driving HVAC compressors or pumps in factory automation systems. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbs regenerative energy spikes and switching overshoots during IGBT turn-off. Use Value: 408 V VWM allows direct placement on 400 V nominal DC bus; 1500 W rating handles repetitive 10/1000 μs surges up to 100 Hz. |
| Telecom Power Supply Surge Suppression | Renewable Energy Inverter DC Input Stage |
Use Scenario: Shields AC/DC front-end rectifiers and PFC controllers in telecom rectifier modules from induced surges on utility-fed inputs. IC Role / Device Role / Timing Role: Primary-level TVS on bulk capacitor input; coordinates with MOVs to share energy and extend lifetime. Use Value: Low clamping ratio (VC/VBR ≈ 1.39) minimizes voltage overshoot during combined lightning + ringwave events per ITU-T K.20. |
Use Scenario: Mounted across PV string inputs of central inverters to suppress voltage spikes caused by rapid cloud-edge irradiance changes or arc faults. IC Role / Device Role / Timing Role: High-VWM unidirectional suppressor referenced to negative rail; prevents reverse-bias damage to MPPT controller inputs. Use Value: 456–504 V VBR range aligns with 1000 V PV string ratings; AEC-Q101 qualification ensures field longevity in outdoor mounting environments. |
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 (408 V), but lower PPPM (400 W); SMA package (DO-214AC), smaller footprint and higher RθJA (105 °C/W). | Limited to lower-energy transients (IEC 61000-4-5 Level 2); unsuitable for automotive load dump or industrial motor drive clamping. | Select only for space-constrained consumer or telecom designs where 1500 W rating is unnecessary. |
| 1.5KE480A | Through-hole TO-204AA (DO-41) package; identical VWM/VBR/VC specs but higher RθJA (100 °C/W) and no AEC-Q101 qualification. | Requires wave soldering or hand-soldering; not approved for automotive use; less suitable for automated SMT production. | Choose only for legacy through-hole designs or prototyping where SMT compatibility and automotive qualification are not required. |
Compared with SMAJ480A and 1.5KE480A, the 1.5SMC480AHM3_B/H delivers superior surge handling (1500 W vs. 400 W or same-power but through-hole), AEC-Q101 validation for automotive deployment, and optimized thermal performance in SMT production - making it the preferred choice for high-reliability, high-energy DC system protection.
Availability
1.5SMC480AHM3_B/H is available at Aetrix Electronics and suitable for automotive power electronics, industrial motor drives, renewable energy inverters, and telecom infrastructure requiring stable component supply with guaranteed AEC-Q101 compliance and halogen-free materials.
Supply support for 1.5SMC480AHM3_B/H 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness, AEC-Q101 validation, and precise clamping performance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC480AHM3_B/H under full-rated surge conditions?
The 1.5SMC480AHM3_B/H has a maximum clamping voltage (VC) of 658 V at its rated peak pulse current (IPPM) of 2.28 A, measured with a 10/1000 μs waveform. This value is specified in the Electrical Characteristics table on page 2 of the Vishay datasheet (Doc. #88303) and reflects worst-case voltage seen by downstream components during surge events.
Is the 1.5SMC480AHM3_B/H qualified for automotive applications?
Yes, the 1.5SMC480AHM3_B/H carries the HM3 suffix, confirming it is halogen-free, RoHS-compliant, and AEC-Q101 qualified. This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD - validating its suitability for under-hood and chassis-mounted automotive electronics.
What package type does the 1.5SMC480AHM3_B/H use, and what are its key mechanical features?
The 1.5SMC480AHM3_B/H uses the SMC (DO-214AB) surface-mount package: low-profile, molded case meeting UL 94 V-0 flammability rating, with matte tin-plated leads compliant with J-STD-002 and JESD22-B102. Dimensions are 7.11 mm × 6.22 mm × 2.62 mm (L × W × H), and polarity is marked by a cathode band.
How does the 1.5SMC480AHM3_B/H differ from the non-HM3 version like 1.5SMC480A-M3?
The 1.5SMC480AHM3_B/H adds AEC-Q101 qualification and halogen-free construction versus the commercial-grade 1.5SMC480A-M3. Both share identical electrical specs (VWM, VBR, VC, PPPM), but only the HM3 variant is approved for automotive use and meets stricter material compliance requirements per IPC-1752A.
What is the maximum operating junction temperature for the 1.5SMC480AHM3_B/H?
The 1.5SMC480AHM3_B/H has a maximum operating junction temperature (TJ max) of +150 °C, as stated in the Maximum Ratings table (page 1 of Doc. #88303). This rating enables reliable operation in sealed enclosures or high-ambient environments such as engine compartments or industrial control cabinets.
1.5SMC480AHM3_B/H 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/H FAQ
1.How can I place an order for 1.5SMC480AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC480AHM3_B/H 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/H reliable?
The price and inventory of 1.5SMC480AHM3_B/H 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/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC480AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC480AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC480AHM3_B/H?
1.5SMC480AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC480AHM3_B/H 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/H?
For technical support, including 1.5SMC480AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC480AHM3_B/H requirements.
6.How does Aetrix verify that 1.5SMC480AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC480AHM3_B/H 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/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC480AHM3_B/H?
All 1.5SMC480AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC480AHM3_B/H, 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/H part is unused and in its original packaging.
Return procedure for 1.5SMC480AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC480AHM3_B/H Tags
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