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Vishay General Semiconductor - Diodes Division 1.5KE15CA-E3/51
- Part No.:
- 1.5KE15CA-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE15CA-E3/51.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:7,285
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Product details
Overview
1.5KE15CA-E3/51 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in signal and power lines. It features a 15 V breakdown voltage (VBR = 14.3–15.8 V at 1.0 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 21.2 V at 70.8 A, and operates across –55 °C to +175 °C. It is used to protect MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching surges.
For engineers reviewing the 1.5KE15CA-E3/51 datasheet, 1.5KE15CA-E3/51 pinout, 1.5KE15CA-E3/51 application, or 1.5KE15CA-E3/51 equivalent, this device delivers verified bidirectional clamping performance, RoHS-compliant matte tin leads, UL 94 V-0 molded epoxy packaging, and AEC-Q101 qualification availability - critical for automotive, industrial, and telecom surge protection design.
Technical Context
This TVS diode employs a glass passivated silicon junction optimized for fast response (<1 ns) and low incremental surge resistance. Its bidirectional architecture enables symmetrical clamping in both polarities without polarity marking, supporting AC-coupled lines and differential signaling paths.
It complies with ANSI/IEEE C62.35 surge waveform standards and is rated for 1500 W peak pulse power under 10/1000 µs conditions at 0.01% duty cycle. Thermal resistance is specified as RθJA = 75 °C/W and RθJL = 15.4 °C/W, enabling reliable operation up to TJ = 175 °C with appropriate PCB copper area or lead heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 14.3 V / 15.8 V at 1.0 mA - defines precise voltage threshold where clamping initiates reliably |
| VWM | 12.8 V - maximum continuous working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 21.2 V at 70.8 A - actual clamped voltage during full 1500 W transient, limiting downstream stress |
| PPPM | 1500 W - peak surge energy absorption capability per 10/1000 µs waveform |
| TJ range | –55 °C to +175 °C - supports under-hood automotive and high-temp industrial environments |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with 0.375" (9.5 mm) lead length, UL 94 V-0 compliant |
Pinout & Package
1.5KE15CA-E3/51 uses a two-terminal axial-leaded DO-201AD (Case Style 1.5KE) package. As a bidirectional TVS, it has no polarity marking; both terminals are functionally identical and interchangeable in circuit placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Provides low-impedance shunt path for surge current in either direction; no cathode band or polarity identification required |
| Leads (matte tin plated) | Thermal and electrical interface | Solderable per J-STD-002/JESD 22-B102; supports 275 °C solder dip (10 s max); meets JESD 201 Class 1A whisker test |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| 1500 W peak pulse power (10/1000 µs) | Handles high-energy transients common in automotive load-dump and industrial motor switching events |
| Bidirectional clamping symmetry | Enables direct replacement of unidirectional devices in AC or floating circuits without redesign |
| UL 94 V-0 molded epoxy body | Provides flame-retardant mechanical protection and environmental sealing for harsh ambient conditions |
| AEC-Q101 qualified variants available | Validated for automotive electronics per stress-test requirements including HTGB, HTRB, and temperature cycling |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from ISO 7637-2 pulse 5a (load dump) and inductive switching spikes. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed across power rail upstream of DC/DC converter input. Use Value: Clamps transients to ≤21.2 V within <1 ns, preventing damage to 3.3 V/5 V logic and CAN transceivers. |
Use Scenario: Safeguarding 4–20 mA current-loop sensors in factory automation against ESD and cable discharge events. IC Role / Device Role / Timing Role: Differential TVS pair across signal lines (e.g., between AI+ and AI−) with common-mode suppression. Use Value: Maintains signal integrity below 12.8 V operating voltage while diverting >70 A surges away from precision ADC front-end. |
| Telecom DSL Line Protection | Consumer USB Port ESD Protection |
Use Scenario: Shielding ADSL/VDSL line drivers and receivers from lightning-induced surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Bidirectional TVS placed between tip/ring and ground in line interface module. Use Value: Limits induced voltages to safe levels (<21.2 V) without adding capacitance that degrades high-frequency DSL signal integrity. |
Use Scenario: Adding secondary-level surge immunity to USB 2.0 data lines (D+/D−) in set-top boxes and smart displays. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp bridging D+ and D− to absorb ±8 kV contact ESD per IEC 61000-4-2. Use Value: Prevents latch-up and gate oxide rupture in USB PHY ICs while maintaining signal rise/fall times under 1 ns response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA | DO-214AA (SMB) package; lower PPPM = 600 W; VC = 24.4 V @ 24.5 A | Compact surface-mount alternative for space-constrained PCBs; not suitable for 1500 W surge events | Select when board space is limited and peak surge energy is ≤600 W; requires re-layout due to SMD footprint |
| 1.5SMC15CA | DO-214AB (SMC) package; same PPPM = 1500 W; VC = 24.4 V @ 61.5 A; higher VBR tolerance (±5%) | Surface-mount drop-in for automated assembly; slightly higher clamping voltage reduces margin for 15 V rails | Choose for high-volume SMT production where axial leads are incompatible; verify 24.4 V clamping aligns with system OV threshold |
Compared with 1.5KE15CA-E3/51, SMBJ15CA offers smaller size but sacrifices 60% surge power handling, while 1.5SMC15CA retains full 1500 W capability in SMT form but raises clamping voltage by 3.2 V - impacting protection margin for tightly regulated 15 V systems.
Availability
1.5KE15CA-E3/51 is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor signal conditioning, and telecom line interface applications requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE15CA-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, optoelectronics, and passive components for demanding industrial and automotive markets.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments, emphasizing rugged packaging, wide temperature operation, and repeatable clamping performance across production lots.
FAQ
What is the breakdown voltage tolerance of the 1.5KE15CA-E3/51?
The 1.5KE15CA-E3/51 has a specified breakdown voltage range of 14.3 V to 15.8 V at 1.0 mA test current, corresponding to a ±5% tolerance around the nominal 15 V rating. This tight VBR window ensures consistent clamping onset across production units and supports predictable system-level overvoltage protection design for the 1.5KE15CA-E3/51.
Is the 1.5KE15CA-E3/51 RoHS compliant and lead-free?
Yes, the 1.5KE15CA-E3/51 carries the "E3" suffix, indicating full RoHS compliance per Directive 2011/65/EU and exemption 6c. Its matte tin-plated leads meet J-STD-002 solderability requirements and JESD 201 Class 1A whisker testing, confirming lead-free construction and process compatibility for modern electronics assembly of the 1.5KE15CA-E3/51.
Does the 1.5KE15CA-E3/51 require polarity-aware PCB layout?
No - the 1.5KE15CA-E3/51 is a bidirectional TVS diode with symmetrical terminal behavior and no polarity marking. Both leads serve identically as transient current paths in either direction, eliminating orientation constraints during placement and simplifying layout for AC-coupled or floating signal lines protected by the 1.5KE15CA-E3/51.
What is the maximum clamping voltage of the 1.5KE15CA-E3/51 under surge conditions?
The 1.5KE15CA-E3/51 clamps to a maximum of 21.2 V when subjected to its rated peak pulse current of 70.8 A (10/1000 µs waveform). This value is measured at the device terminals and represents the upper limit of voltage seen by downstream circuitry during a full 1500 W transient event, a key parameter for validating protection margins in the 1.5KE15CA-E3/51 application.
Can the 1.5KE15CA-E3/51 be used in automotive under-hood applications?
Yes - the 1.5KE15CA-E3/51 operates from –55 °C to +175 °C and supports AEC-Q101 qualification in HE3-suffixed variants (e.g., 1.5KE15CAHE3_B). Its glass passivated junction, UL 94 V-0 epoxy body, and robust thermal resistance (RθJL = 15.4 °C/W) make it suitable for engine control modules, body electronics, and other under-hood locations where the 1.5KE15CA-E3/51 provides validated surge resilience.
1.5KE15CA-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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 70.8A
- 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
1.5KE15CA-E3/51 FAQ
1.How can I place an order for 1.5KE15CA-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE15CA-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 1.5KE15CA-E3/51 reliable?
The price and inventory of 1.5KE15CA-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 1.5KE15CA-E3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE15CA-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE15CA-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE15CA-E3/51?
1.5KE15CA-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE15CA-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 1.5KE15CA-E3/51?
For technical support, including 1.5KE15CA-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE15CA-E3/51 requirements.
6.How does Aetrix verify that 1.5KE15CA-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE15CA-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 1.5KE15CA-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE15CA-E3/51?
All 1.5KE15CA-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE15CA-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 1.5KE15CA-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE15CA-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE15CA-E3/51 Tags
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