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Vishay General Semiconductor - Diodes Division 1.5KE480A-E3/73
- Part No.:
- 1.5KE480A-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE480A-E3/73.pdf
- Description:
- TVS DIODE 408VWM 658VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:5,106
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Product details
Overview
1.5KE480A-E3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in DC power lines and signal paths. It features a 456 V to 504 V breakdown voltage (VBR), 408 V maximum standoff voltage (VWM), 1500 W peak pulse power (10/1000 µs), 2.28 A peak pulse current (IPPM), and clamps transients to ≤658 V at rated surge. It is used in industrial power supplies and telecom line interfaces where robust overvoltage immunity is required.
For engineers reviewing the 1.5KE480A-E3/73 datasheet, 1.5KE480A-E3/73 pinout, 1.5KE480A-E3/73 application, or 1.5KE480A-E3/73 equivalent, this part delivers verified 1500 W transient suppression with low clamping ratio (VC/VBR ≈ 1.33), RoHS-compliant matte tin leads, and commercial-grade reliability up to +175 °C junction temperature - critical for high-voltage AC/DC front-end protection and legacy telecom infrastructure designs.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below VWM = 408 V, then avalanches sharply at VBR = 456–504 V to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown and low leakage (<1 µA at VWM).
Clamping occurs within <1 ns, limiting transient voltage to ≤658 V at IPPM = 2.28 A (10/1000 µs waveform). Thermal resistance is RθJA = 75 °C/W and RθJL = 15.4 °C/W, enabling effective heat dissipation through PCB copper and lead frames under repetitive surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 456 V min. to 504 V max. at 1 mA - defines precise avalanche onset threshold for reliable triggering |
| Standoff Voltage (VWM) | 408 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| Peak Pulse Power (PPPM) | 1500 W (10/1000 µs) - sustains single high-energy surges common in lightning-induced transients |
| Clamping Voltage (VC) | ≤658 V at 2.28 A - limits protected circuit voltage during full-rated surge, ensuring MOSFET/IC survival |
| Leakage Current (ID) | ≤1 µA at 408 V - negligible standby power loss and no false triggering in high-impedance sensing nodes |
| Junction Temperature Range | −55 °C to +175 °C - supports operation in harsh environments including outdoor telecom cabinets and industrial motor drives |
| Package Type | DO-201AD (Case Style 1.5KE) - axial-leaded, epoxy-molded package with UL 94 V-0 rating and JESD 22-B106 solderability |
Pinout & Package
Package: DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body with cathode band marking. Dimensions: 5.3 mm × 4.8 mm × 9.5 mm (L × D × lead length); meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-potential node; completes shunt path during avalanche conduction |
| Cathode (banded end) | High-side surge input terminal | Receives transient voltage; avalanche initiates here when VAK ≥ VBR, clamping to VC |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable VBR tolerance (±5 %) and long-term reliability under thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without degradation when properly heatsinked |
| Clamping ratio (VC/VBR) ≈ 1.33 | Minimizes overvoltage stress on protected ICs - critical for 400–500 V rail systems like PoE++ injectors |
| Matte tin-plated leads | Guarantees solderability per J-STD-002/JESD 22-B102 and whisker resistance (JESD 201 Class 1A) |
| Operating TJ up to +175 °C | Enables placement near hot components (e.g., bridge rectifiers, PFC chokes) without derating |
Applications
| Industrial Power Supply Input Protection | Telecom Line Interface Surge Suppression |
|---|---|
Use Scenario: Protects AC/DC converter primary-side rectifier and bulk capacitor from lightning-induced surges on 380–480 VAC mains inputs. IC Role / Device Role: Unidirectional shunt TVS placed across DC bus after bridge rectifier to clamp positive-going transients. Use Value: Limits voltage to ≤658 V during 1500 W surges, preventing overvoltage failure of 600 V-rated MOSFETs and electrolytic capacitors. |
Use Scenario: Shields Ethernet PHY or DSL line driver ICs from induced surges on outdoor copper loops exposed to lightning. IC Role / Device Role: Front-end unidirectional TVS on tip/ring lines, referenced to local ground plane. Use Value: Sub-1 ns response clamps fast-rising transients before they reach sensitive analog front-ends, meeting GR-1089-CORE Level 3 requirements. |
| Motor Drive DC Bus Protection | Renewable Energy Inverter DC Link |
Use Scenario: Safeguards IGBT gate drivers and bus voltage sensors in variable-frequency drives subjected to inductive switching spikes. IC Role / Device Role: Mounted across DC link capacitor bank to absorb regenerative energy spikes during rapid deceleration. Use Value: Withstands repetitive 2.28 A surges at 0.01 % duty cycle, extending system uptime in factory automation equipment. |
Use Scenario: Protects MPPT controller inputs and DC-link capacitors in solar string inverters exposed to grid fault transients. IC Role / Device Role: Unidirectional TVS on PV+ and PV− rails upstream of isolation stage to suppress DC-side surges. Use Value: High VWM (408 V) enables direct integration into 1000 V-class PV systems without series stacking or voltage derating. |
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 | Same VWM (408 V), identical DO-214AC (SMA) package but lower PPPM = 400 W; smaller footprint, lower thermal mass | Suitable only for lower-energy surges (IEC 61000-4-5 Level 2); not recommended for primary-side 1500 W protection | Select only if space-constrained and surge threat level is ≤400 W; verify thermal design for repeated events |
| ON Semiconductor 1N5388B | Higher VBR range (475–525 V), same DO-201AD package, PPPM = 1500 W, but VF = 5.0 V at 100 A and no AEC-Q101 option | Better suited for 500 V nominal systems requiring tighter VBR tolerance; lacks Vishay's JESD 201 Class 1A whisker rating | Prefer for cost-sensitive industrial designs where whisker risk is mitigated by process control; avoid in automotive-adjacent applications |
Compared with 1.5KE480A-E3/73, SMAJ480A trades surge capacity for compactness, while 1N5388B offers tighter VBR control but omits RoHS-compliant whisker mitigation - making 1.5KE480A-E3/73 the optimal choice for high-reliability 400–500 V DC bus protection where proven 1500 W capability and lead finish integrity are mandatory.
Availability
1.5KE480A-E3/73 is available at Aetrix Electronics and suitable for industrial power supplies, telecom line interfaces, motor drive DC buses, and renewable energy inverters requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE480A-E3/73 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and ruggedized performance.
The 1.5KE series was engineered for high-power transient suppression in industrial, telecom, and energy infrastructure - delivering consistent 1500 W surge handling in standardized axial packages for ease of board-level integration and thermal management.
FAQ
What is the breakdown voltage tolerance for 1.5KE480A-E3/73?
The 1.5KE480A-E3/73 has a specified breakdown voltage range of 456 V minimum to 504 V maximum at 1 mA test current, corresponding to a ±5 % tolerance about the nominal 480 V rating. This tight tolerance ensures predictable clamping behavior across production lots and supports reliable system-level surge margin calculations in high-voltage DC applications.
Is 1.5KE480A-E3/73 RoHS compliant and lead-free?
Yes, the "E3" suffix in 1.5KE480A-E3/73 indicates full RoHS compliance per Directive 2011/65/EU, with matte tin-plated leads and no lead, cadmium, mercury, hexavalent chromium, PBB, or PBDE. It also meets JESD 201 Class 1A whisker testing, confirming long-term solder joint integrity in thermal-cycled environments.
Can 1.5KE480A-E3/73 be used in bidirectional configurations?
No - 1.5KE480A-E3/73 is a unidirectional TVS diode, identified by the "A" suffix. Bidirectional variants use the "CA" suffix (e.g., 1.5KE220CA) and are only available up to 220 V VBR. For 480 V bidirectional protection, two 1.5KE480A-E3/73 devices must be connected in series opposing configuration, though this increases VC and reduces effective PPPM.
What is the maximum clamping voltage of 1.5KE480A-E3/73 at its rated surge current?
The maximum clamping voltage (VC) of 1.5KE480A-E3/73 is 658 V at its rated peak pulse current (IPPM) of 2.28 A, measured using the standard 10/1000 µs double-exponential waveform. This value reflects worst-case device variation and ensures protected circuits remain below critical overvoltage thresholds during full-rated surge events.
Does 1.5KE480A-E3/73 meet AEC-Q101 qualification?
No - 1.5KE480A-E3/73 is commercial grade only. Per Vishay documentation, AEC-Q101 qualification applies only to 1.5KE6.8AHE3_B through 1.5KE220AHE3_B and their bidirectional CA counterparts. The 1.5KE250A and higher variants, including 1.5KE480A-E3/73, are not AEC-Q101 qualified and should not be used in automotive applications requiring that standard.
1.5KE480A-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Cut Tape (CT)
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE480A-E3/73 FAQ
1.How can I place an order for 1.5KE480A-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE480A-E3/73 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-E3/73 reliable?
The price and inventory of 1.5KE480A-E3/73 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-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE480A-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE480A-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE480A-E3/73?
1.5KE480A-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE480A-E3/73 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-E3/73?
For technical support, including 1.5KE480A-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE480A-E3/73 requirements.
6.How does Aetrix verify that 1.5KE480A-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE480A-E3/73 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-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE480A-E3/73?
All 1.5KE480A-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE480A-E3/73, 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-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE480A-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE480A-E3/73 Tags
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