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Vishay General Semiconductor - Diodes Division 1.5KE15CA-E3/54
- Part No.:
- 1.5KE15CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE15CA-E3/54.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:433
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Product details
Overview
1.5KE15CA-E3/54 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), and clamps to ≤21.2 V at 70.8 A, with operating junction temperature up to +175 °C. It is used to protect MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching surges in industrial and automotive systems.
For engineers reviewing the 1.5KE15CA-E3/54 datasheet, 1.5KE15CA-E3/54 pinout, 1.5KE15CA-E3/54 application, or 1.5KE15CA-E3/54 equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, JEDEC 1.5KE package details, thermal resistance (RθJA = 75 °C/W), and RoHS-compliant commercial-grade sourcing - all critical for surge protection design validation and BOM selection.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional CA suffix configuration, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, while the 10/1000 µs waveform rating reflects standardized surge immunity testing per IEC 61000-4-5 and R.E.A. P.E. 60.
The device exhibits fast response time (~1 ns), minimal capacitance (<100 pF at 1 MHz), and thermal derating governed by RθJL = 15.4 °C/W (junction-to-lead), making it suitable for high-reliability transient suppression where layout-constrained thermal management is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 14.3 V / 15.8 V at 1.0 mA - defines precise clamping onset threshold for bidirectional overvoltage events |
| VWM | 12.8 V - maximum continuous working voltage before leakage exceeds 1.0 µA, setting safe operating margin |
| VC @ IPPM | 21.2 V at 70.8 A - clamped voltage during 1500 W transient, directly limiting stress on downstream components |
| PPPM | 1500 W - peak pulse power handling capability under standardized 10/1000 µs surge, critical for lightning-level immunity |
| TJ max. | +175 °C - enables operation in under-hood automotive or high-ambient industrial environments without derating loss |
| RθJA | 75 °C/W - quantifies thermal performance on standard PCB pads; informs heatsinking requirements for repetitive surge duty |
| Package | JEDEC 1.5KE - axial-leaded, molded epoxy case (UL 94 V-0), compatible with through-hole assembly and manual rework |
Pinout & Package
1.5KE15CA-E3/54 uses a two-terminal axial-leaded package (Case Style 1.5KE) with no polarity marking - consistent with bidirectional functionality. Leads are matte tin-plated and solderable per J-STD-002/JESD 22-B102; no cathode/anode designation applies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional surge conduction path | Both terminals function identically - conducts transient current in either direction once VBR is exceeded |
| Leads (axial) | Thermal and mechanical interface | Provide primary heat dissipation path (RθJL = 15.4 °C/W); lead length ≥9.5 mm required for rated power derating |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5%) and long-term reliability under repeated surge stress |
| 1500 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly mounted with low-inductance layout |
| Fast 1 ns response time | Clamps transients before sensitive logic or analog circuitry sustains damage - faster than MOVs or gas discharge tubes |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance, enabling use in high-reliability commercial applications |
| UL 94 V-0 molding compound | Provides flame-retardant housing essential for safety-critical industrial and automotive control units |
Applications
| Industrial Motor Drives | Automotive Sensor Interfaces |
|---|---|
Use Scenario: Protecting gate drivers and feedback circuits from inductive kickback during IGBT/MOSFET switching in variable-frequency drives. IC Role / Device Role: Bidirectional clamping element placed across DC bus or signal lines to limit transient overshoot to <22 V. Use Value: Prevents latch-up or oxide breakdown in 15 V-rated control ICs by clamping 10/1000 µs surges to 21.2 V at 70.8 A. | Use Scenario: Shielding CAN/LIN transceivers and MEMS pressure sensors from load-dump and jump-start transients in engine control modules. IC Role / Device Role: Primary front-end TVS on supply rails and differential data lines, leveraging symmetrical response for AC-coupled signals. Use Value: Maintains signal integrity during ±100 V/50 ms load-dump events by holding rail voltage within 12.8–21.2 V window without polarity dependency. |
| Telecom Power Supplies | Consumer Appliance Control Boards |
Use Scenario: Safeguarding AC-DC converter inputs and isolated DC outputs against lightning-induced surges on outdoor telecom line cards. IC Role / Device Role: Secondary-stage TVS after MOVs, absorbing residual energy and sharpening clamping response for downstream regulators. Use Value: Reduces let-through voltage to <21.2 V under combined 10/1000 µs + 8/20 µs waveforms, protecting 12–15 V LDOs and microcontrollers. | Use Scenario: Protecting microcontroller GPIOs and relay driver circuits from ESD and relay coil flyback in washing machine or HVAC control boards. IC Role / Device Role: Point-of-use TVS on 12 V supply rails and 5 V logic lines, selected for low VWM/VBR ratio (12.8 V / 15.8 V). Use Value: Enables reliable operation with 15 V-rated MCU I/O pins by guaranteeing clamping below absolute maximum ratings even at TJ = 125 °C. |
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 | Surface-mount SMB package (vs. axial 1.5KE); lower PPPM = 600 W; VC = 24.4 V @ 24.5 A | Preferred for space-constrained PCBs; unsuitable for >600 W surge requirements | Select when board area is limited and surge energy is ≤600 W; verify thermal pad layout for RθJA = 40 °C/W |
| 1.5KE15A-E3/54 | Unidirectional variant; identical VBR, PPPM, and package but includes cathode band marking | Required only for DC-biased lines where reverse conduction must be blocked | Choose only if circuit topology mandates unidirectional clamping; otherwise 1.5KE15CA-E3/54 offers broader signal-line compatibility |
Compared with SMBJ15CA and 1.5KE15A-E3/54, the 1.5KE15CA-E3/54 uniquely balances 1500 W surge capacity, bidirectional symmetry, and through-hole manufacturability - making it optimal for high-energy, polarity-agnostic protection in industrial power electronics where layout flexibility and thermal robustness are prioritized over footprint size.
Availability
1.5KE15CA-E3/54 is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor interfaces, telecom power supplies, and consumer appliance control boards requiring stable component supply and full traceability.
Supply support for 1.5KE15CA-E3/54 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, and protection devices with emphasis on reliability, surge resilience, and automotive qualification.
The 1.5KE series was engineered specifically for high-power transient suppression in harsh environments, targeting applications demanding >1000 W pulse handling, wide temperature operation, and UL/IEC compliance - especially where axial-leaded robustness outweighs SMT density trade-offs.
FAQ
What is the breakdown voltage range for 1.5KE15CA-E3/54, and how is it tested?
The 1.5KE15CA-E3/54 has a guaranteed breakdown voltage (VBR) range of 14.3 V to 15.8 V, measured at a test current (IT) of 1.0 mA in both directions. This specification is verified per JEDEC standards using controlled DC ramp testing at TA = 25 °C, and applies equally to forward and reverse bias due to its bidirectional construction. The 1.5KE15CA-E3/54 maintains this tolerance across its full operating temperature range.
Does 1.5KE15CA-E3/54 require polarity-aware PCB layout?
No - the 1.5KE15CA-E3/54 is a bidirectional TVS diode with no anode/cathode marking, and its electrical behavior is identical in both directions. Unlike unidirectional variants (e.g., 1.5KE15A-E3/54), the 1.5KE15CA-E3/54 can be installed in either orientation on the PCB without affecting clamping performance or surge protection capability.
What is the maximum clamping voltage of 1.5KE15CA-E3/54 under surge conditions?
The 1.5KE15CA-E3/54 clamps to a maximum of 21.2 V when subjected to its rated peak pulse current of 70.8 A (corresponding to 1500 W at 10/1000 µs). This value is measured per standard test conditions and represents the upper limit of voltage imposed on protected circuitry during worst-case transient events - critical for ensuring downstream 15 V-rated ICs remain within safe operating limits.
Is 1.5KE15CA-E3/54 qualified for automotive applications?
The base 1.5KE15CA-E3/54 is a commercial-grade part (E3 suffix) and not AEC-Q101 qualified. However, Vishay offers the AEC-Q101-qualified variant 1.5KE15CAHE3_B in the same 1.5KE package. For automotive designs requiring qualification, engineers should specify the HE3_B version; the 1.5KE15CA-E3/54 remains suitable for non-automotive industrial and telecom applications.
How does thermal resistance affect the derating of 1.5KE15CA-E3/54 in real-world layouts?
The 1.5KE15CA-E3/54 has RθJA = 75 °C/W and RθJL = 15.4 °C/W. In practice, its power dissipation must be derated above TA = 25 °C per Figure 2 of the datasheet, and peak pulse capability drops significantly if lead length is less than 9.5 mm or copper pour area is insufficient. For sustained surge duty, thermal design must ensure junction temperature stays ≤175 °C - verified using the 1.5KE15CA-E3/54's published derating curves.
1.5KE15CA-E3/54 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:
- Active
- 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-E3/54 FAQ
1.How can I place an order for 1.5KE15CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE15CA-E3/54 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 1.5KE15CA-E3/54 reliable?
The price and inventory of 1.5KE15CA-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE15CA-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE15CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE15CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE15CA-E3/54?
1.5KE15CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE15CA-E3/54 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 1.5KE15CA-E3/54?
For technical support, including 1.5KE15CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE15CA-E3/54 requirements.
6.How does Aetrix verify that 1.5KE15CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE15CA-E3/54 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 1.5KE15CA-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE15CA-E3/54?
All 1.5KE15CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE15CA-E3/54, 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 1.5KE15CA-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE15CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE15CA-E3/54 Tags
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