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Vishay General Semiconductor - Diodes Division 1.5SMC480AHE3_A/I
- Part No.:
- 1.5SMC480AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC480AHE3_A/I.pdf
- Description:
- TVS DIODE 408VWM 658VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,901
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Product details
Overview
1.5SMC480AHE3_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 breakdown voltage (VBR min = 456 V, max = 504 V), 408 V maximum clamping voltage at 2.28 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and operates across -65 °C to +150 °C junction temperature range - deployed in automotive power supply rail protection.
For engineers reviewing the 1.5SMC480AHE3_A/I datasheet, 1.5SMC480AHE3_A/I pinout, 1.5SMC480AHE3_A/I application, or 1.5SMC480AHE3_A/I equivalent, this device serves as a robust, AEC-Q101-qualified transient suppressor for high-voltage DC bus protection where precise clamping, low leakage (<1 µA at 408 V), and repeatable surge handling are critical.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction to achieve fast response time (<1 ns), low incremental surge resistance, and stable clamping under repetitive 10/1000 µs transients. Its design targets single-event surge suppression rather than continuous overvoltage regulation.
Rated for 1500 W peak pulse power with 0.01% duty cycle, it derates linearly above 25 °C ambient per Fig. 2 and requires minimum 8.0 mm × 8.0 mm copper pads per terminal for thermal performance. The cathode band denotes polarity; no marking on bidirectional variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 456 V / 504 V at 1.0 mA test current - defines reliable conduction onset under surge conditions |
| VWM | 408 V - maximum continuous reverse working voltage before significant leakage begins |
| VC @ IPPM | 658 V at 2.28 A - clamped voltage during full-rated 1500 W transient, limiting downstream stress |
| IPPM | 2.28 A - peak pulse current capability under 10/1000 µs waveform, validated with derating above 25 °C |
| Leakage (ID) | <1 µA at 408 V - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max | +150 °C - enables operation in under-hood automotive environments without thermal shutdown |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
Pinout & Package
Package: SMC (DO-214AB), molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards; MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection point in unidirectional configuration | Connected to protected line; conducts when transient exceeds VBR, shunting energy to ground |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes clamping current path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| 1500 W peak pulse power (10/1000 µs) | Withstands high-energy lightning-induced surges in 12 V–48 V vehicle subsystems without degradation |
| Glass-passivated junction | Ensures stable VBR tolerance (±5%), low leakage, and long-term parameter stability under thermal stress |
| Low profile SMC package | Enables automated placement and high-density PCB layouts while maintaining thermal dissipation via copper pad coupling |
| MSL Level 1 moisture sensitivity | Allows standard SMT reflow without baking; compatible with J-STD-020-compliant assembly processes |
Applications
| Automotive Power Supply Protection | Industrial DC Bus Clamping |
|---|---|
|
Use Scenario: Protecting 48 V battery management system (BMS) input stages against load dump and ISO 7637-2 Pulse 5a transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC/DC converter input to clamp surges above 408 V. Use Value: Limits peak voltage to 658 V during 1500 W transients, preventing damage to downstream MOSFETs and controllers. |
Use Scenario: Safeguarding PLC I/O module power inputs exposed to inductive switching noise in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff protector on 24 V/48 V backplane rails, activated only during >456 V events. Use Value: Sub-1 ns response ensures clamping occurs before sensitive logic ICs experience overstress. |
| Telecom Line Interface Protection | Renewable Energy Inverter DC Link |
|
Use Scenario: Shielding PoE-powered equipment front-end circuitry from induced surges on Ethernet cables routed near AC mains. IC Role / Device Role / Timing Role: Primary surge arrestor on DC bias line feeding active Ethernet magnetics. Use Value: 1 µA leakage at 408 V preserves PoE Class 4 power budget while enabling fast clamping. |
Use Scenario: Mitigating voltage spikes on photovoltaic string combiner box outputs during rapid cloud-edge transitions. IC Role / Device Role / Timing Role: High-VBR TVS across PV+ and PV− terminals to absorb transient energy before MPPT controller input. Use Value: 658 V clamping voltage stays safely below 700 V rated input of commercial inverters. |
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-E3/52 | Lower peak pulse power (600 W), SMB package (smaller thermal mass), same VBR range | Suitable for space-constrained consumer electronics; insufficient for automotive load dump compliance | Select when board area is critical and surge energy is ≤600 W |
| 1.5KE480A | Through-hole DO-201 package, identical electrical specs but higher RθJA (100 °C/W vs. 75 °C/W) | Used in legacy industrial designs requiring manual assembly or high-reliability through-hole mounting | Choose only if SMT is not feasible and thermal margin allows higher junction rise |
Compared with 1.5SMC480AHE3_A/I, SMBJ480A-E3/52 trades surge capacity for compactness, while 1.5KE480A retains equivalent clamping but sacrifices thermal performance and AEC-Q101 qualification - making 1.5SMC480AHE3_A/I the sole choice for production automotive systems requiring validated reliability and 1500 W capability in SMC form factor.
Availability
1.5SMC480AHE3_A/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial DC bus clamping, telecom line interface hardening, and renewable energy inverter DC link surge suppression requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant sourcing.
Supply support for 1.5SMC480AHE3_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, TVS devices, and optoelectronics with emphasis on reliability, precision, and application-specific validation.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in harsh environments - particularly targeting automotive, industrial, and telecom infrastructure where AEC-Q101 qualification, 1500 W surge handling, and stable clamping are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC480AHE3_A/I under full-rated surge conditions?
The 1.5SMC480AHE3_A/I exhibits a maximum clamping voltage (VC) of 658 V when subjected to its rated 2.28 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured at TA = 25 °C with recommended 8.0 mm × 8.0 mm copper pads per terminal and represents the upper limit of voltage seen by downstream circuitry during worst-case transient events. The 1.5SMC480AHE3_A/I maintains this clamping performance across its specified operating temperature range.
Is the 1.5SMC480AHE3_A/I AEC-Q101 qualified, and what does that entail?
Yes, the 1.5SMC480AHE3_A/I is AEC-Q101 qualified - confirmed by its "HE3" suffix and documentation in Vishay's 1.5SMC series datasheet (Doc. #88303). This qualification includes stress testing for temperature cycling, high-temperature reverse bias (HTRB), accelerated life testing, and electrostatic discharge (ESD) per JEDEC standards. The 1.5SMC480AHE3_A/I is approved for use in automotive powertrain, chassis, and body electronics where reliability under thermal, mechanical, and electrical stress is mission-critical.
How does the 1.5SMC480AHE3_A/I differ from bidirectional variants like 1.5SMC480CA?
The 1.5SMC480AHE3_A/I is unidirectional, meaning it conducts only when the cathode is positive relative to the anode - ideal for DC rail protection with defined polarity. In contrast, 1.5SMC480CA is bidirectional and symmetrical, conducting during both positive and negative voltage excursions - suited for AC line or differential signal protection. The 1.5SMC480AHE3_A/I has a cathode band marking; 1.5SMC480CA has no polarity marking. Their VBR and VC values differ accordingly due to internal structure.
What is the thermal resistance and recommended PCB layout for optimal performance of the 1.5SMC480AHE3_A/I?
The 1.5SMC480AHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the minimum recommended 8.0 mm × 8.0 mm copper pads per terminal. To ensure reliable operation at full 1500 W surge rating, use solid copper pours connected to both terminals, avoid narrow traces, and maintain ≥1.5 mm clearance to other components. The 1.5SMC480AHE3_A/I achieves MSL Level 1 rating, supporting standard reflow profiles up to 260 °C peak without pre-baking.
Can the 1.5SMC480AHE3_A/I be used in parallel for higher surge current handling?
No - the 1.5SMC480AHE3_A/I is not designed for parallel operation. Variations in VBR tolerance (±5%) and dynamic impedance cause uneven current sharing during transients, risking thermal runaway in one device. For higher surge capability, select a single higher-rated part (e.g., 1.5SMC510A) or implement staged protection with upstream current-limiting elements. The 1.5SMC480AHE3_A/I must be applied as a discrete, standalone suppressor per its validated ratings.
1.5SMC480AHE3_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:
- Obsolete
- 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)
1.5SMC480AHE3_A/I FAQ
1.How can I place an order for 1.5SMC480AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC480AHE3_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 1.5SMC480AHE3_A/I reliable?
The price and inventory of 1.5SMC480AHE3_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 1.5SMC480AHE3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC480AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC480AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC480AHE3_A/I?
1.5SMC480AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC480AHE3_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 1.5SMC480AHE3_A/I?
For technical support, including 1.5SMC480AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC480AHE3_A/I requirements.
6.How does Aetrix verify that 1.5SMC480AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC480AHE3_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 1.5SMC480AHE3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC480AHE3_A/I?
All 1.5SMC480AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC480AHE3_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 1.5SMC480AHE3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC480AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC480AHE3_A/I Tags
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Diodes Incorporated
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