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Vishay General Semiconductor - Diodes Division 1.5KE510A-E3/51
- Part No.:
- 1.5KE510A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE510A-E3/51.pdf
- Description:
- TVS DIODE 434VWM 698VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,031
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Product details
Overview
1.5KE510A-E3/51 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 485 V to 535 V breakdown voltage (VBR), 434 V maximum working peak reverse voltage (VWM), 698 V clamping voltage (VC) at 2.15 A peak pulse current, 1500 W peak pulse power (10/1000 µs), and operates across -55 °C to +175 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the 1.5KE510A-E3/51 datasheet, 1.5KE510A-E3/51 pinout, 1.5KE510A-E3/51 application, or 1.5KE510A-E3/51 equivalent, this part delivers verified 1500 W transient suppression with fast sub-nanosecond response, low incremental surge resistance, glass-passivated junction reliability, and RoHS-compliant matte tin-plated leads suitable for J-STD-002 soldering.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for high-reliability clamping of inductive switching transients and lightning-induced surges. Its 10/1000 µs waveform rating ensures robust energy handling under standardized surge conditions, while its 15.4 °C/W junction-to-lead thermal resistance supports stable operation without external heatsinking in moderate-duty cycles.
The device exhibits a 0.110 %/°C temperature coefficient of VBR, enabling predictable voltage drift over temperature, and maintains ≤1.0 µA reverse leakage at VWM. It is not AEC-Q101 qualified-per documentation, only 1.5KE6.8AHE3_B through 1.5KE220AHE3_B variants carry that qualification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 485 V / 535 V - Ensures reliable conduction onset above normal operating voltage while avoiding false triggering |
| VWM | 434 V - Maximum continuous reverse voltage the device blocks without significant leakage |
| VC @ IPPM | 698 V - Clamped voltage seen by protected circuit during full 1500 W surge event |
| PPPM | 1500 W - Peak transient power dissipation capability with 10/1000 µs waveform |
| IPPM | 2.15 A - Peak pulse current corresponding to rated clamping voltage and power |
| TJ range | -55 °C to +175 °C - Enables deployment in harsh environments including industrial motor drives and outdoor power systems |
| Package | Case Style 1.5KE - Axial-leaded DO-201AD package with 0.375" lead length, UL 94 V-0 molded epoxy body |
Pinout & Package
1.5KE510A-E3/51 is housed in a DO-201AD (Case Style 1.5KE) axial-leaded package. The cathode is marked by a color band on the body; polarity must be observed in series connection with protected circuits.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to lower-potential side of protected line | Enables unidirectional clamping - conducts only when cathode is > anode by ≥VBR |
| Cathode | Current exit point in forward bias; marked by color band; connected to higher-potential side | Defines clamping polarity - reverse-biased during surge to shunt energy to ground or rail |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances long-term stability and moisture resistance vs. epoxy-only passivation, critical for field reliability |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth) in properly designed layouts |
| Sub-nanosecond response time | Clamps transients before sensitive downstream components experience damaging overvoltage |
| Low incremental surge resistance | Minimizes VC overshoot during high di/dt events, improving clamping precision |
| RoHS-compliant matte tin plating | Ensures solderability per J-STD-002 and eliminates whisker risk (JESD 201 Class 1A) |
Applications
| Industrial Motor Drive DC Bus Protection | Telecom Power Supply Input Stage |
|---|---|
Use Scenario: Suppresses turn-off spikes from IGBTs and flyback energy in 400–600 V DC bus rails. IC Role / Device Role / Timing Role: Unidirectional TVS placed between DC+ and ground to clamp positive transients exceeding 434 V. Use Value: Limits voltage excursion to ≤698 V during 1500 W surges, preventing gate oxide rupture in 650 V IGBTs and overvoltage failure in bulk capacitors. |
Use Scenario: Protects AC/DC front-end rectifiers and PFC controllers from utility-side surges and load dump events. IC Role / Device Role / Timing Role: Mounted across bulk capacitor input to absorb line-to-ground transients before they reach control ICs. Use Value: Withstands repetitive 10/1000 µs surges up to 1500 W without degradation, maintaining system uptime in central office and remote terminal equipment. |
| Automotive Body Control Module (BCM) Power Input | Renewable Energy Inverter DC Link |
Use Scenario: Guards 12 V/24 V supply inputs against load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Connected anode-to-ground, cathode-to-rail to clamp positive transients on BCM main power feed. Use Value: Delivers 1500 W clamping within 1 ns - faster than Zener-based alternatives - preserving MCU and CAN transceiver integrity. |
Use Scenario: Shields high-voltage DC link (600–1000 V) in solar/wind inverters from grid-switching transients and lightning coupling. IC Role / Device Role / Timing Role: Placed across DC+ and DC− terminals to limit differential-mode overvoltage during fault clearing. Use Value: 485–535 V VBR aligns with 750 V nominal DC link designs, ensuring clamping initiates before SiC MOSFET avalanche thresholds are exceeded. |
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 SMAJ510A | DO-214AC (SMA) package; 510 V VBR min; 680 V VC @ 2.2 A; 400 W PPPM | Lower power rating limits use to <500 W surge environments; surface-mount only | Select when board space is constrained and surge energy is ≤400 W; not drop-in for axial 1.5KE footprint |
| ON Semiconductor 1N5388B | DO-201AD package; 510 V VBR min; 690 V VC @ 2.2 A; 1500 W PPPM; same pinout | Identical mechanical and electrical specs; RoHS-compliant; no AEC-Q101 variant available | Valid pin-compatible alternative with identical clamping behavior and thermal performance |
Compared with 1.5KE510A-E3/51, SMAJ510A offers compact SMT packaging but sacrifices 73% peak power handling, while 1N5388B matches all key ratings and form factor - making it a direct functional and mechanical replacement for legacy 1.5KE510A designs.
Availability
1.5KE510A-E3/51 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, and renewable energy inverters requiring stable component supply with guaranteed long-term sourcing and traceable lot history.
Supply support for 1.5KE510A-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 high-reliability diodes, MOSFETs, and passive components for demanding industrial and automotive applications.
The 1.5KE series was engineered specifically for high-energy transient suppression in DC power systems, emphasizing ruggedness, repeatable clamping, and compatibility with automated through-hole assembly processes.
FAQ
What is the breakdown voltage tolerance for 1.5KE510A-E3/51?
The 1.5KE510A-E3/51 has a specified breakdown voltage (VBR) range of 485 V minimum to 535 V maximum at 1.0 mA test current. This ±5% tolerance ensures consistent clamping onset across production lots while allowing margin for system-level voltage derating. The value is measured per JEDEC standard and confirmed in Vishay's 88301 datasheet revision 09-Aug-2022.
Is 1.5KE510A-E3/51 AEC-Q101 qualified?
No, 1.5KE510A-E3/51 is not AEC-Q101 qualified. Per Vishay document 88301, AEC-Q101 qualification applies only to 1.5KE6.8AHE3_B through 1.5KE220AHE3_B and their bidirectional CA counterparts. The 1.5KE510A-E3/51 is commercial-grade and intended for industrial, telecom, and renewable energy applications where automotive qualification is not required.
What is the maximum clamping voltage of 1.5KE510A-E3/51 under surge conditions?
The maximum clamping voltage (VC) of 1.5KE510A-E3/51 is 698 V, measured at its rated peak pulse current (IPPM) of 2.15 A using a 10/1000 µs waveform. This value defines the highest voltage the protected circuit will experience during a full 1500 W transient event and is critical for ensuring downstream component voltage ratings are not exceeded.
Can 1.5KE510A-E3/51 be used in bidirectional configurations?
No, 1.5KE510A-E3/51 is strictly unidirectional. Bidirectional variants in the 1.5KE family are designated with a "CA" suffix (e.g., 1.5KE220CA) and are only available up to 220 V VBR. The 1.5KE510A-E3/51 lacks symmetrical breakdown characteristics and must be installed with correct polarity - cathode toward the higher-potential side of the protected line.
What is the thermal resistance specification for 1.5KE510A-E3/51?
The 1.5KE510A-E3/51 has a typical junction-to-lead thermal resistance (RθJL) of 15.4 °C/W, measured with 0.375" (9.5 mm) lead length. This parameter enables accurate estimation of junction temperature rise under pulsed conditions and confirms suitability for through-hole mounting without additional heatsinking in most industrial surge duty cycles.
1.5KE510A-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):
- 434V
- Voltage - Breakdown (Min):
- 485V
- Voltage - Clamping (Max) @ Ipp:
- 698V
- Current - Peak Pulse (10/1000µs):
- 2.15A
- 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
1.5KE510A-E3/51 FAQ
1.How can I place an order for 1.5KE510A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE510A-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 1.5KE510A-E3/51 reliable?
The price and inventory of 1.5KE510A-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 1.5KE510A-E3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE510A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE510A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE510A-E3/51?
1.5KE510A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE510A-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 1.5KE510A-E3/51?
For technical support, including 1.5KE510A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE510A-E3/51 requirements.
6.How does Aetrix verify that 1.5KE510A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE510A-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 1.5KE510A-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE510A-E3/51?
All 1.5KE510A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE510A-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 1.5KE510A-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE510A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE510A-E3/51 Tags
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