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Vishay General Semiconductor - Diodes Division 1.5KE480A-E3/51
- Part No.:
- 1.5KE480A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE480A-E3/51.pdf
- Description:
- TVS DIODE 408VWM 658VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,266
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Product details
Overview
1.5KE480A-E3/51 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 456 V to 504 V breakdown voltage (VBR), 408 V maximum standoff voltage (VWM), 658 V clamping voltage at peak pulse current, 1500 W peak pulse power (10/1000 µs), and operates across -55 °C to +175 °C junction temperature range - deployed in industrial power supplies and telecom line interfaces.
For engineers reviewing the 1.5KE480A-E3/51 datasheet, 1.5KE480A-E3/51 pinout, 1.5KE480A-E3/51 application, or 1.5KE480A-E3/51 equivalent, this page delivers verified electrical specs, thermal derating behavior, clamping performance under 10/1000 µs transients, JEDEC 1.5KE package mechanical data, and direct AEC-Q101-comparable alternatives for high-reliability overvoltage protection design.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) and low incremental surge resistance. Its 1500 W peak pulse power rating applies under standardized 10/1000 µs waveform conditions with 0.01% duty cycle, and clamping voltage is specified at 2.28 A peak pulse current (IPPM).
Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15.4 °C/W, supporting operation up to 175 °C junction temperature. The device exhibits 0.110 %/°C temperature coefficient of VBR, ensuring stable breakdown across wide ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 456 V to 504 V - defines reliable conduction onset under transient stress; ensures protection starts before downstream component damage threshold. |
| VWM | 408 V - maximum continuous reverse operating voltage; must exceed normal circuit operating voltage to prevent leakage or false triggering. |
| VC @ IPPM | 658 V - clamped voltage during 2.28 A 10/1000 µs surge; determines worst-case voltage seen by protected IC or MOSFET. |
| PPPM | 1500 W - peak pulse power handling capacity; enables robust suppression of lightning-induced surges per IEC 61000-4-5. |
| IPPM | 2.28 A - peak pulse current corresponding to VC; used to size PCB trace width and verify system-level surge margin. |
| TJ max. | +175 °C - maximum junction temperature; supports operation in high-ambient environments like industrial motor drives or outdoor telecom cabinets. |
| Package | JEDEC DO-201AD (Case Style 1.5KE) - axial-leaded, epoxy-molded package rated UL 94 V-0; compatible with wave soldering (275 °C, 10 s max). |
Pinout & Package
JEDEC DO-201AD (Case Style 1.5KE) package: axial-leaded, molded epoxy body with cathode band marking. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102; E3 suffix indicates RoHS compliance and JESD 201 Class 1A whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during forward surge events (e.g., reverse polarity faults). |
| Cathode (banded end) | Reverse-biased clamping terminal | Connected to higher-potential side; initiates avalanche breakdown when reverse voltage exceeds VBR, diverting surge current to ground. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable avalanche characteristics and long-term reliability under repetitive surge stress. |
| 1500 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 Level 4 (4 kV) surge immunity requirements for AC mains and telecom line protection. |
| Clamping voltage ≤658 V at 2.28 A | Provides defined overvoltage ceiling for 400–480 VAC systems, protecting rectifiers, PFC controllers, and DC-link capacitors. |
| Response time <1 ns | Engages before most semiconductor failure mechanisms initiate, preserving gate oxides and junction integrity in MOSFETs and ICs. |
| Operating TJ up to +175 °C | Enables placement near heat-generating components (e.g., bridge rectifiers, chokes) without thermal derating penalties. |
Applications
| Industrial Power Supply Input Protection | Telecom Line Interface Surge Suppression |
|---|---|
Use Scenario: Installed across AC input terminals or DC bus of industrial SMPS to absorb lightning-induced surges and switching transients from contactors or relays. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed upstream of bridge rectifier and bulk capacitor. Use Value: Limits transient voltage to ≤658 V, preventing overvoltage failure of 600 V-rated rectifiers and electrolytic capacitors rated for 450 VDC. |
Use Scenario: Mounted on primary side of isolation transformers or directly on tip/ring lines of DSL/POTS interfaces exposed to induced surges. IC Role / Device Role / Timing Role: Standoff protector absorbing common-mode surges before signal conditioning circuitry. Use Value: Withstands 1500 W pulses while maintaining 408 V working voltage, enabling compatibility with 48 V nominal telecom systems and legacy analog voice circuits. |
| Motor Drive DC-Link Overvoltage Clamp | Renewable Energy Inverter String Protection |
Use Scenario: Connected between DC-link rails in 3-phase inverters to suppress regenerative energy spikes during rapid deceleration or grid faults. IC Role / Device Role / Timing Role: Fast-acting clamp limiting rail voltage overshoot during IGBT turn-off events. Use Value: Clamps within 1 ns to ≤658 V, protecting 650 V IGBT modules and reducing need for oversized DC-link capacitors. |
Use Scenario: Applied across PV string outputs to mitigate surge coupling from nearby lightning strikes in solar farm combiner boxes. IC Role / Device Role / Timing Role: High-energy transient absorber rated for outdoor, high-humidity environments. Use Value: UL 94 V-0 epoxy housing and -55 °C to +175 °C operation ensure long-term stability in unventilated enclosures exposed to desert or coastal climates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ480A | DO-214AC (SMA) package; 480 V VBR min, 658 V VC @ 2.28 A; 400 W PPPM. | Lower peak power rating limits use to sub-IEC 61000-4-5 Level 3 applications; better suited for board space-constrained designs. | Select when footprint reduction outweighs need for 1500 W surge handling; requires PCB layout revision due to SMD vs. axial lead form factor. |
| ON Semiconductor 1.5SMC480A | SMB package; identical 456–504 V VBR, 408 V VWM, 658 V VC, but rated 1500 W with 10/1000 µs waveform and AEC-Q101 qualified. | Automotive-grade qualification enables use in vehicle charging infrastructure where qualification traceability is mandatory. | Choose for EVSE, battery management, or automotive auxiliary power systems requiring AEC-Q101 documentation and process control. |
Compared with 1.5KE480A-E3/51, SMAJ480A offers smaller size but only 400 W surge capability, while 1.5SMC480A matches key electrical specs and adds AEC-Q101 qualification - making it suitable for automotive applications where 1.5KE480A-E3/51's commercial-grade status is insufficient.
Availability
1.5KE480A-E3/51 is available at Aetrix Electronics and suitable for industrial power supply input protection, telecom line interface surge suppression, motor drive DC-link overvoltage clamp, renewable energy inverter string protection, and high-voltage DC bus stabilization requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE480A-E3/51 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, power handling, and ruggedized packaging.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting industrial automation, telecom infrastructure, and power conversion systems where sustained surge immunity and thermal resilience are critical.
FAQ
What is the breakdown voltage range for the 1.5KE480A-E3/51?
The 1.5KE480A-E3/51 has a guaranteed breakdown voltage (VBR) range of 456 V to 504 V at 1.0 mA test current, per Vishay Document Number 88301. This range ensures consistent avalanche initiation across manufacturing lots and temperature extremes, directly supporting design margin calculations for 400–480 VAC systems. The 1.5KE480A-E3/51 maintains this specification under JEDEC-standard test conditions and is validated for use in high-reliability transient suppression roles.
Is the 1.5KE480A-E3/51 RoHS compliant and lead-free?
Yes, the 1.5KE480A-E3/51 carries the E3 suffix, indicating full RoHS compliance per Directive 2011/65/EU and exemption 6a, with lead content below 1000 ppm. Its matte tin-plated leads meet J-STD-002 solderability requirements, and the device passes JESD 201 Class 1A whisker testing. The 1.5KE480A-E3/51 is manufactured using lead-free assembly processes and carries no hazardous substance declarations beyond standard exemptions.
What is the maximum clamping voltage of the 1.5KE480A-E3/51 under surge conditions?
The 1.5KE480A-E3/51 exhibits a maximum clamping voltage (VC) of 658 V when subjected to its rated peak pulse current of 2.28 A under the standard 10/1000 µs waveform. This value is measured per Figure 7 in Vishay Document 88301 and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. Designers use this 1.5KE480A-E3/51 clamping spec to verify safe operating margins for downstream 600 V-rated components.
Can the 1.5KE480A-E3/51 be used in automotive applications?
The 1.5KE480A-E3/51 is a commercial-grade device and is not AEC-Q101 qualified. While it operates from -55 °C to +175 °C and meets basic surge requirements, it lacks the process controls, lot traceability, and stress-test validation required for automotive ECUs or charging systems. For such use cases, consider the AEC-Q101-qualified 1.5SMC480A as an alternative. The 1.5KE480A-E3/51 remains appropriate for industrial and telecom applications where AEC-Q101 is not mandated.
What is the thermal resistance of the 1.5KE480A-E3/51 and how does it affect power dissipation?
The 1.5KE480A-E3/51 has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead resistance (RθJL) of 15.4 °C/W. These values define how effectively heat generated during surge events dissipates - critical for verifying safe operation under repetitive surge conditions. At 25 °C ambient, the 1.5KE480A-E3/51 can sustain 6.5 W continuous power (PD) on an infinite heatsink, but derating begins above 25 °C per Figure 5 in the datasheet.
1.5KE480A-E3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE480A-E3/51 FAQ
1.How can I place an order for 1.5KE480A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE480A-E3/51 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 1.5KE480A-E3/51 reliable?
The price and inventory of 1.5KE480A-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE480A-E3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE480A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE480A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE480A-E3/51?
1.5KE480A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE480A-E3/51 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 1.5KE480A-E3/51?
For technical support, including 1.5KE480A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE480A-E3/51 requirements.
6.How does Aetrix verify that 1.5KE480A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE480A-E3/51 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 1.5KE480A-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE480A-E3/51?
All 1.5KE480A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE480A-E3/51, 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 1.5KE480A-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE480A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE480A-E3/51 Tags
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