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Vishay General Semiconductor - Diodes Division 1.5KE15HE3/54
- Part No.:
- 1.5KE15HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE15HE3/54.pdf
- Description:
- TVS DIODE 12.1VWM 22VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:7,553
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Product details
Overview
1.5KE15HE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 15 V breakdown voltage (VBR = 14.3–15.8 V at 1 mA), 12.8 V maximum stand-off voltage (VWM), 21.2 V clamping voltage (VC) at 70.8 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5KE15HE3/54 datasheet, 1.5KE15HE3/54 pinout, 1.5KE15HE3/54 application, or 1.5KE15HE3/54 equivalent, this part delivers verified AEC-Q101 qualification (HE3 suffix), RoHS-compliant matte tin-plated leads, JESD 201 Class 2 whisker resistance, and UL 94 V-0 molded epoxy packaging - critical for automotive, industrial, and telecom surge protection design-in.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below VWM (12.8 V), then avalanches sharply at VBR to limit transient voltage across protected circuitry. Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, ensuring effective clamping before downstream components experience overstress.
Rated for 175 °C maximum junction temperature and derated above 25 °C ambient, the device supports robust thermal performance via low RθJL (15.4 °C/W) and is qualified per AEC-Q101 for automotive under-hood applications. The HE3 suffix confirms AEC-Q101 qualification, JESD 201 Class 2 whisker resistance, and RoHS compliance - distinct from commercial-grade E3 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 14.3 V / 15.8 V at 1 mA - defines precise avalanche initiation threshold for reliable overvoltage detection |
| VWM | 12.8 V - maximum continuous reverse operating voltage without leakage degradation |
| VC @ IPPM | 21.2 V at 70.8 A - clamping voltage during 1500 W transient, limiting stress on protected ICs |
| PPPM | 1500 W (10/1000 µs) - peak surge energy handling capacity for lightning and load-switching events |
| IFSM | 200 A (8.3 ms half-sine) - forward surge current rating for unidirectional fault-current tolerance |
| TJ max. | 175 °C - enables operation in under-hood automotive and industrial environments |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance supports power dissipation without heatsink |
Pinout & Package
Package: Case Style 1.5KE - axial-leaded, molded epoxy body meeting UL 94 V-0 flammability rating; leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance return in unidirectional clamp configuration |
| Cathode | Protected line connection / avalanche reference | Connected to line being protected (e.g., 12 V rail); color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| 1500 W peak pulse power (10/1000 µs) | Handles IEC 61000-4-5 Level 4 surge (4 kV/2 Ω) without failure in typical PCB layouts |
| Clamping ratio VC/VBR ≈ 1.43 | Low ratio minimizes voltage overshoot during clamping - critical for 15 V-rated ICs |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth in high-reliability applications over 10+ year service life |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs and body control modules from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and chassis ground to clamp surges within nanoseconds. Use Value: Limits transient voltage to ≤21.2 V, preventing damage to 16 V-rated CAN transceivers and microcontrollers. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC analog input cards. IC Role / Device Role / Timing Role: Standoff-mode protector on 4–20 mA loop or 0–10 V signal line, absorbing field-induced surges. Use Value: Maintains signal integrity by clamping induced spikes before they reach precision ADC front-ends. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Stage |
Use Scenario: Front-end protection on DSL or PoE-powered line cards exposed to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Primary unidirectional TVS on DC input bus, coordinated with GDT or MOV secondary protection. Use Value: Responds in <1 ns to divert >70 A surge current, preserving upstream DC-DC converter FETs and controllers. |
Use Scenario: Secondary-side overvoltage clamp on 15 V output of AC/DC adapters powering smart home hubs. IC Role / Device Role / Timing Role: Fast-acting shunt element that activates before output capacitor overvoltage triggers OVP shutdown. Use Value: Prevents latch-up or gate oxide rupture in downstream USB-PD controllers during output short-circuit recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15AHE3/52 | DO-214AA package (SMB), 1500 W rating, same VBR/VC, but lower IPPM (68.2 A) and higher RθJA (50 °C/W) | Surface-mount only; requires PCB rework; less suitable for through-hole legacy designs or high-temperature ambient | Select when board space is constrained and SMT assembly is available. |
| 1.5KE15A-E3/54 | Same 1.5KE package and electrical specs, but E3 suffix indicates commercial grade (non-AEC-Q101) and JESD 201 Class 1A whisker rating | Not qualified for automotive; acceptable for industrial/commercial power supplies where qualification isn't mandated | Choose for cost-sensitive non-automotive applications with identical form/fit/function. |
Compared with 1.5KE15HE3/54, SMBJ15AHE3/52 offers SMT compatibility at the expense of thermal performance and mounting flexibility, while 1.5KE15A-E3/54 matches mechanical and electrical behavior but lacks AEC-Q101 validation - making the HE3 variant uniquely suited for automotive-grade reliability without layout change.
Availability
1.5KE15HE3/54 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom infrastructure requiring stable component supply with AEC-Q101 assurance and long-lifecycle support.
Supply support for 1.5KE15HE3/54 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 performance.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness, repeatable clamping, and qualification compliance are mandatory.
FAQ
What is the clamping voltage of the 1.5KE15HE3/54 under maximum rated surge current?
The 1.5KE15HE3/54 exhibits a maximum clamping voltage (VC) of 21.2 V when subjected to its peak pulse current (IPPM) of 70.8 A using the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and ensures predictable overvoltage limiting for downstream 15 V-rated components. The 1.5KE15HE3/54 maintains this clamping performance across its qualified temperature range and lifetime.
Is the 1.5KE15HE3/54 suitable for automotive applications?
Yes - the 1.5KE15HE3/54 carries the HE3 suffix, which explicitly denotes AEC-Q101 qualification, JESD 201 Class 2 whisker resistance, and RoHS compliance. It is rated for operation from –55 °C to +175 °C and validated for automotive under-hood environments including thermal cycling and humidity exposure. The 1.5KE15HE3/54 meets these requirements without derating in typical engine-control module deployments.
How does the 1.5KE15HE3/54 differ from the 1.5KE15A-E3/54?
The 1.5KE15HE3/54 and 1.5KE15A-E3/54 share identical electrical specifications (VBR, VC, PPPM) and 1.5KE package, but differ in qualification: HE3 denotes AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, whereas E3 indicates commercial grade and Class 1A. The 1.5KE15HE3/54 is therefore approved for automotive use, while the 1.5KE15A-E3/54 is restricted to non-automotive applications.
What is the standoff voltage rating for the 1.5KE15HE3/54?
The 1.5KE15HE3/54 has a maximum working peak reverse voltage (VWM) of 12.8 V, meaning it remains in high-impedance blocking mode for all reverse voltages up to this level at 25 °C. This allows safe integration into 12 V systems with margin against ripple and tolerance drift. The 1.5KE15HE3/54 maintains VWM stability across its full operating temperature range per datasheet derating curves.
Does the 1.5KE15HE3/54 require a heatsink for standard operation?
No - the 1.5KE15HE3/54 is designed for lead-mounted operation without external heatsinking. Its thermal resistance from junction to lead (RθJL) is 15.4 °C/W, and its 6.5 W steady-state power dissipation (PD) is fully supported by standard 0.375" (9.5 mm) lead length per JEDEC. The 1.5KE15HE3/54 achieves adequate thermal relief in typical PCB layouts with minimal copper area, per Vishay's Fig. 5 derating curve.
1.5KE15HE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 12.1V
- Voltage - Breakdown (Min):
- 13.5V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 68.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE15HE3/54 FAQ
1.How can I place an order for 1.5KE15HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE15HE3/54 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 1.5KE15HE3/54 reliable?
The price and inventory of 1.5KE15HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE15HE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE15HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE15HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE15HE3/54?
1.5KE15HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE15HE3/54 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 1.5KE15HE3/54?
For technical support, including 1.5KE15HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE15HE3/54 requirements.
6.How does Aetrix verify that 1.5KE15HE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE15HE3/54 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 1.5KE15HE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE15HE3/54?
All 1.5KE15HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE15HE3/54, 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 1.5KE15HE3/54 part is unused and in its original packaging.
Return procedure for 1.5KE15HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE15HE3/54 Tags
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