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Vishay General Semiconductor - Diodes Division 1.5KE11CA-E3/54
- Part No.:
- 1.5KE11CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE11CA-E3/54.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,638
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Product details
Overview
1.5KE11CA-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 11 V nominal breakdown voltage (VBR = 10.5–11.6 V at 1 mA), 1500 W peak pulse power (10/1000 µs), and clamps transients to ≤15.6 V at 96.2 A, making it suitable for protecting MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching spikes.
For engineers reviewing the 1.5KE11CA-E3/54 datasheet, 1.5KE11CA-E3/54 pinout, 1.5KE11CA-E3/54 application, or 1.5KE11CA-E3/54 equivalent, this device delivers verified bidirectional clamping performance, RoHS-compliant matte tin-plated leads, JEDEC-standard 1.5KE package compatibility, and AEC-Q101 qualification eligibility - critical for automotive, industrial, and telecom surge protection design.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector with symmetrical avalanche breakdown in both polarities, enabling direct placement across AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable VBR tolerance (±5%), low incremental surge resistance, and sub-nanosecond response time (<1 ns).
It is rated for 175 °C maximum junction temperature, derates linearly above 25 °C ambient per Fig. 2, and exhibits 75 °C/W junction-to-ambient thermal resistance. The 1.5KE11CA-E3/54 supports repetitive 10/1000 µs pulses at 0.01% duty cycle and meets UL 94 V-0 flammability requirements via its molded epoxy case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 10.5–11.6 V at 1 mA - defines precise clamping onset threshold for bidirectional surge suppression |
| Stand-off Voltage VWM | 9.4 V - maximum continuous reverse voltage before leakage exceeds 5 µA, ensuring no false triggering |
| Clamping Voltage VC | ≤15.6 V at 96.2 A IPPM - limits transient voltage seen by protected circuitry during 1500 W surge |
| Peak Pulse Power PPPM | 1500 W (10/1000 µs) - sustains high-energy transients without failure, critical for lightning/inductive load protection |
| Junction Temperature Range | –55 °C to +175 °C - enables operation in under-hood automotive, industrial control, and outdoor telecom environments |
| Package | JEDEC 1.5KE case - industry-standard axial-leaded TO-204AA package with 0.375" lead length for through-hole mounting and thermal relief |
| RoHS Compliance | E3 suffix - compliant with EU RoHS Directive 2011/65/EU, matte tin plating per J-STD-002/JESD 22-B102 |
Pinout & Package
1.5KE11CA-E3/54 uses a two-terminal axial-leaded package (JEDEC Case Style 1.5KE, TO-204AA). As a bidirectional TVS diode, it has no polarity marking; both terminals are functionally identical and interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Both terminals conduct identically during positive or negative overvoltage events; no cathode band marking required |
| Leads (matte tin plated) | Thermal and electrical interface | Supports soldering per J-STD-002; 0.375" (9.5 mm) lead length aids mechanical stability and heat dissipation in PCB mounting |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures tight VBR tolerance (±5%), long-term parameter stability, and resistance to humidity-induced degradation |
| 1500 W peak pulse power (10/1000 µs) | Withstands high-energy transients common in automotive load-dump and telecom lightning surge standards (IEC 61000-4-5) |
| Sub-nanosecond response time | Clamps within <1 ns - faster than MOVs or GDTs - preserving integrity of high-speed digital and analog signal paths |
| AEC-Q101 qualification option | Available in HE3 variant (e.g., 1.5KE11CAHE3_B); qualified for automotive electronics per stress test requirements |
| UL 94 V-0 molded epoxy case | Provides flame-retardant mechanical encapsulation essential for safety-critical industrial and telecom equipment |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and microcontroller I/O pins from load-dump transients (ISO 7637-2 Pulse 5a) and alternator ripple in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed across power rail or signal line to divert surge current away from sensitive ICs. Use Value: Limits voltage to ≤15.6 V during 96.2 A surge, preventing latch-up or gate oxide damage in 3.3 V/5 V logic devices. |
Use Scenario: Shielding 4–20 mA current-loop sensors and RS-485 transceivers in factory automation PLCs from ESD and inductive kickback. IC Role / Device Role / Timing Role: Fast-acting voltage limiter on differential signal pairs or supply inputs to maintain signal integrity during field wiring faults. Use Value: Sub-ns response prevents data corruption; 9.4 V stand-off voltage avoids interference with normal 24 V loop operation. |
| Telecom Line Surge Protection | Consumer Power Adapter Input Stage |
Use Scenario: Front-end protection of DSL/POE Ethernet ports against lightning-induced surges on outdoor copper lines (ITU-T K.20/K.21). IC Role / Device Role / Timing Role: Primary-level TVS placed before isolation transformers or choke filters to absorb bulk surge energy. Use Value: 1500 W rating handles 10/1000 µs surges up to 4 kV; bidirectional symmetry matches AC-coupled telecom signaling. |
Use Scenario: Secondary-side overvoltage clamp on DC output rails of wall adapters powering USB peripherals or smart home hubs. IC Role / Device Role / Timing Role: Fail-safe crowbar element that shorts excessive output voltage to ground, triggering upstream OCP. Use Value: 175 °C max junction temperature supports compact, thermally constrained adapter designs; RoHS/E3 compliance meets global regulatory requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA | Surface-mount SMB package (vs. axial 1.5KE); same VBR range (10.5–11.6 V), lower PPPM (600 W) | Preferred for space-constrained PCBs; unsuitable for high-energy surges requiring 1500 W capability | Select 1.5KE11CA-E3/54 when board layout allows axial mounting and full 1500 W surge handling is mandatory. |
| 1.5KE11A-E3/54 | Unidirectional version; identical package, VBR, and PPPM, but marked cathode band and asymmetric clamping | Required only where DC bias exists and polarity-aware protection is needed (e.g., single-rail power input) | Choose 1.5KE11CA-E3/54 for AC-coupled, floating, or bidirectional signal lines; use 1.5KE11A-E3/54 only for unidirectional DC rails. |
Compared with SMBJ11CA and 1.5KE11A-E3/54, the 1.5KE11CA-E3/54 uniquely combines axial-leaded mechanical robustness, full 1500 W surge capacity, and true bidirectional symmetry - making it the optimal choice for legacy-compatible, high-reliability surge protection where polarity independence and energy handling are non-negotiable.
Availability
1.5KE11CA-E3/54 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom line protection, and consumer power adapter designs requiring stable component supply across extended production lifecycles.
Supply support for 1.5KE11CA-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, TVS devices, and optoelectronics with emphasis on reliability, ruggedness, and automotive-grade qualification.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure due to voltage surges must be eliminated.
FAQ
What is the breakdown voltage tolerance of the 1.5KE11CA-E3/54?
The 1.5KE11CA-E3/54 has a specified breakdown voltage (VBR) range of 10.5 V to 11.6 V at 1 mA test current, representing a ±5% tolerance around the nominal 11 V rating. This tight tolerance ensures predictable clamping behavior across production lots and supports reliable system-level surge margin calculations in designs using the 1.5KE11CA-E3/54.
Is the 1.5KE11CA-E3/54 suitable for automotive applications?
Yes - the 1.5KE11CA-E3/54 is eligible for AEC-Q101 qualification in its HE3 variant (e.g., 1.5KE11CAHE3_B), and its base E3 version meets key automotive requirements including 175 °C max junction temperature, glass-passivated junction stability, and UL 94 V-0 flammability. It is widely deployed for load-dump and ESD protection in vehicle ECUs, infotainment systems, and body control modules using the 1.5KE11CA-E3/54.
How does the clamping voltage of the 1.5KE11CA-E3/54 compare to its breakdown voltage?
The 1.5KE11CA-E3/54 clamps transients to ≤15.6 V at its rated peak pulse current of 96.2 A (IPPM), while its breakdown voltage starts at 10.5 V. This 5.1 V differential (ΔVC) reflects low incremental surge resistance and efficient energy diversion - a critical design advantage over higher-clamp alternatives when protecting 3.3 V or 5 V logic circuits with the 1.5KE11CA-E3/54.
Does the 1.5KE11CA-E3/54 require heatsinking in typical applications?
No active heatsink is required for standard 1.5KE11CA-E3/54 operation under single-pulse conditions, as its 1500 W rating applies to non-repetitive 10/1000 µs waveforms. However, for repetitive surges or high ambient temperatures (>75 °C), PCB copper area and lead length (0.375") serve as the primary thermal path; its RθJA of 75 °C/W assumes standard JEDEC test conditions, and thermal design should verify junction temperature stays below 175 °C when using the 1.5KE11CA-E3/54.
What is the meaning of the "CA" and "E3/54" suffixes in 1.5KE11CA-E3/54?
The "CA" suffix denotes bidirectional polarity - confirming symmetrical clamping for AC or floating signals. "E3" indicates RoHS-compliant matte tin plating and JESD 201 Class 1A whisker resistance; "/54" specifies the packaging format: 13-inch paper tape and reel with 1400 units per reel. These identifiers are integral to the 1.5KE11CA-E3/54 part number and define its electrical, mechanical, and logistics attributes.
1.5KE11CA-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):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 96.2A
- 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
1.5KE11CA-E3/54 FAQ
1.How can I place an order for 1.5KE11CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE11CA-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 1.5KE11CA-E3/54 reliable?
The price and inventory of 1.5KE11CA-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 1.5KE11CA-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE11CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE11CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE11CA-E3/54?
1.5KE11CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE11CA-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 1.5KE11CA-E3/54?
For technical support, including 1.5KE11CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE11CA-E3/54 requirements.
6.How does Aetrix verify that 1.5KE11CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE11CA-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 1.5KE11CA-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE11CA-E3/54?
All 1.5KE11CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE11CA-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 1.5KE11CA-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE11CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE11CA-E3/54 Tags
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