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Vishay General Semiconductor - Diodes Division 1.5KE11CA-E3/51
- Part No.:
- 1.5KE11CA-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE11CA-E3/51.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,666
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Product details
Overview
1.5KE11CA-E3/51 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for clamping voltage transients on 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 to ≤15.6 V at 96.2 A peak pulse current - used in automotive sensor protection, industrial I/O interfaces, and telecom line surge suppression.
For engineers reviewing the 1.5KE11CA-E3/51 datasheet, 1.5KE11CA-E3/51 pinout, 1.5KE11CA-E3/51 application, or 1.5KE11CA-E3/51 equivalent, key selection criteria include bidirectional clamping capability, low clamping voltage relative to breakdown, JEDEC-standard 1.5KE package compatibility, and compliance with UL 497B for telecom protector classification.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector with symmetrical avalanche behavior in both polarities. Its glass-passivated junction enables fast response (<1 ns) and stable breakdown characteristics across -55 °C to +175 °C operating temperature range.
It delivers 1500 W peak pulse power under standardized 10/1000 µs waveform with 0.01% duty cycle, and exhibits low incremental surge resistance - critical for limiting transient-induced voltage overshoot during ESD or lightning-induced surges on unshielded lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 10.5–11.6 V at 1 mA test current - defines precise clamping onset threshold for bidirectional overvoltage events |
| Stand-off Voltage VWM | 9.4 V maximum - ensures no conduction during normal operation up to rated working voltage |
| Clamping Voltage VC | ≤15.6 V at 96.2 A IPPM - limits downstream component stress during worst-case surge |
| Peak Pulse Power PPPM | 1500 W (10/1000 µs) - sustains high-energy transients without failure, per REA/IEC 61000-4-5 Level 4 |
| Operating Temperature | -55 °C to +175 °C - supports under-hood automotive, industrial control, and outdoor telecom deployments |
| Package | JEDEC DO-201AD (1.5KE case) - industry-standard axial leaded package with 0.375" lead length for through-hole mounting |
| UL Recognition | UL 497B QVGQ2 file E136766 - certified for use in telecom line protectors and safety-critical surge applications |
Pinout & Package
Package: JEDEC DO-201AD (1.5KE case), molded epoxy body with matte tin-plated leads; RoHS-compliant per JESD 201 Class 1A whisker test (E3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode | Bidirectional terminal pair | No polarity marking; symmetric terminals enable placement across AC or differential signal lines without orientation concern |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| 1500 W peak pulse rating | Meets IEC 61000-4-5 surge immunity requirements for industrial and telecom equipment |
| Sub-nanosecond response time | Clamps transients before sensitive ICs experience damaging overvoltage (e.g., <1 ns for 1.5KE11CA-E3/51) |
| UL 497B recognition | Validates suitability for telecom line interface protection in certified end-equipment designs |
| AEC-Q101 qualified variants available | Enables drop-in qualification path for automotive applications (note: 1.5KE11CA-E3/51 is commercial grade) |
Applications
| Automotive Sensor Protection | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., temperature, pressure) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed across signal/power pins to divert surge energy to ground before reaching protected IC. Use Value: Limits clamped voltage to ≤15.6 V while handling 96.2 A pulses - preserving integrity of 12 V rail sensors and 3.3/5 V logic interfaces. |
Use Scenario: Shielding PLC digital input modules from field-side surge coupling via 24 V DC control wiring exposed to relay coil flyback and EMI. IC Role / Device Role / Timing Role: Standoff voltage (9.4 V) blocks normal operation leakage; sub-ns response ensures clamping before microcontroller GPIO damage occurs. Use Value: Enables robust 24 V-rated I/O design with verified 1500 W surge withstand per IEC 61000-4-5, reducing need for external filtering. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Primary surge protection on POTS or DSL line interfaces where induced lightning surges exceed 1 kV. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between tip/ring and ground, compliant with UL 497B QVGQ2 requirements. Use Value: UL-recognized construction and 15.6 V clamping allow direct integration into certified telecom protector modules without additional certification burden. |
Use Scenario: Secondary-side transient suppression on 5 V/12 V outputs of wall adapters to prevent damage to connected USB peripherals or smart home devices. IC Role / Device Role / Timing Role: Fast-acting shunt device absorbing residual switch-mode noise and ESD events after primary MOV stage. Use Value: Low clamping voltage (≤15.6 V) prevents overvoltage on 5 V logic rails; DO-201AD package allows cost-effective through-hole assembly in high-volume adapter PCBs. |
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 | DO-214AA package; lower 600 W PPPM; tighter VBR tolerance (10.5–11.6 V same, but tighter distribution) | Suitable for space-constrained PCBs; lower power rating limits use to Class 2/3 IEC 61000-4-5 only | Select when board area is constrained and surge threat level is moderate (e.g., consumer USB ports) |
| 1.5KE11CAHE3_B | Identical electrical specs; AEC-Q101 qualified; HE3 suffix denotes JESD 201 Class 2 whisker test compliance | Approved for automotive under-hood use; requires qualification documentation for OEM programs | Choose for automotive production where AEC-Q101 compliance is mandatory - same footprint, higher reliability validation |
Compared with 1.5KE11CA-E3/51, SMBJ11CA trades power handling for compactness, while 1.5KE11CAHE3_B adds automotive qualification without changing electrical performance - enabling direct substitution where reliability certification is required.
Availability
1.5KE11CA-E3/51 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O conditioning, and telecom line interface applications requiring stable component supply and full traceability.
Supply support for 1.5KE11CA-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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability and application-specific performance.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where robustness against lightning, ESD, and inductive switching is non-negotiable.
FAQ
What is the breakdown voltage range of the 1.5KE11CA-E3/51?
The 1.5KE11CA-E3/51 has a guaranteed breakdown voltage (VBR) range of 10.5 V to 11.6 V at 1 mA test current, measured per JEDEC standard. This tight tolerance ensures predictable clamping onset across production lots and temperature extremes, critical for protecting 12 V systems where overvoltage margin is narrow.
Is the 1.5KE11CA-E3/51 bidirectional or unidirectional?
The 1.5KE11CA-E3/51 is a bidirectional TVS diode, indicated by the "CA" suffix. It provides symmetrical clamping in both polarities with identical VBR, VWM, and VC specifications - making it ideal for AC-coupled lines, differential buses like RS-485, and telecom tip/ring interfaces where polarity reversal may occur.
What package does the 1.5KE11CA-E3/51 use, and is it RoHS compliant?
The 1.5KE11CA-E3/51 uses the JEDEC DO-201AD (1.5KE) axial-leaded package with matte tin-plated leads. The "E3" suffix confirms RoHS compliance per JESD 201 Class 1A whisker testing, and the molding compound meets UL 94 V-0 flammability rating - supporting environmentally regulated and safety-certified designs.
Does the 1.5KE11CA-E3/51 meet any safety certifications?
Yes - the 1.5KE11CA-E3/51 carries Underwriters Laboratories (UL) recognition under standard UL 497B, file number E136766, for use in telecom protectors. This certification validates its performance in lightning-surge scenarios and permits direct use in UL-listed end equipment without requalification.
How does the clamping voltage of the 1.5KE11CA-E3/51 compare to its breakdown voltage?
At its rated peak pulse current of 96.2 A (10/1000 µs), the 1.5KE11CA-E3/51 clamps to ≤15.6 V - a 33–48% overvoltage above its minimum VBR of 10.5 V. This low VC/VBR ratio reflects optimized junction design and ensures protected circuits remain within safe operating limits during high-energy transients.
1.5KE11CA-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):
- 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-E3/51 FAQ
1.How can I place an order for 1.5KE11CA-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE11CA-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 1.5KE11CA-E3/51 reliable?
The price and inventory of 1.5KE11CA-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 1.5KE11CA-E3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE11CA-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE11CA-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE11CA-E3/51?
1.5KE11CA-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE11CA-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 1.5KE11CA-E3/51?
For technical support, including 1.5KE11CA-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE11CA-E3/51 requirements.
6.How does Aetrix verify that 1.5KE11CA-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE11CA-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 1.5KE11CA-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE11CA-E3/51?
All 1.5KE11CA-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE11CA-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 1.5KE11CA-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE11CA-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE11CA-E3/51 Tags
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