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Vishay General Semiconductor - Diodes Division LCE11A-E3/54
- Part No.:
- LCE11A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
LCE11A-E3/54.pdf
- Description:
- TVS DIODE 11VWM 18.2VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:6,698
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Product details
Overview
LCE11A-E3/54 from Vishay General Semiconductor is a unidirectional low-capacitance TRANSZORB® transient voltage suppressor (TVS) diode in the 1.5KE package, rated for 1500 W peak pulse power (10/1000 μs), 11.0 V standoff voltage (VWM), and 18.2 V maximum clamping voltage (VC) at 82 A peak pulse current. It protects sensitive signal lines in consumer electronics, industrial sensors, and telecom interfaces against ESD and inductive switching transients.
For engineers reviewing the LCE11A-E3/54 datasheet, LCE11A-E3/54 pinout, LCE11A-E3/54 application, or LCE11A-E3/54 equivalent, key selection criteria include its 11.0 V working voltage, 12.2–13.5 V breakdown range at 1 mA, 5.0 μA max reverse leakage at VWM, 100 pF junction capacitance, and UL 497B listing for telecom surge protection.
Technical Context
The LCE11A-E3/54 employs a glass-passivated silicon junction with low incremental surge resistance and sub-nanosecond response time to clamp transient overvoltages before downstream ICs or MOSFETs are damaged. Its unidirectional polarity-marked by a cathode band-enables DC-biased line protection without reverse conduction during normal operation.
Designed for repetitive surge duty cycles up to 0.01 %, it sustains 6.5 W steady-state power dissipation on an infinite heatsink at 75 °C and operates across –65 °C to +175 °C junction temperature. The device meets JESD 22-B106 solderability (275 °C, 10 s) and JESD 201 Class 1A whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11.0 V - Maximum continuous reverse operating voltage before clamping begins; sets safe margin below circuit supply rails. |
| VBR min/max | 12.2 V / 13.5 V at 1 mA - Confirmed breakdown threshold range; ensures reliable turn-on within spec under production tolerance. |
| VC @ IPPM | 18.2 V at 82 A - Clamped voltage during 10/1000 μs surge; defines worst-case stress on protected IC inputs. |
| Junction capacitance | 100 pF at 0 V - Low enough for <10 MHz signal integrity in sensor or data lines; avoids signal distortion. |
| Peak pulse power | 1500 W (10/1000 μs) - Withstands high-energy transients from relay switching or lightning-induced surges. |
| Operating temperature | –65 °C to +175 °C - Supports deployment in automotive under-hood, industrial motor drives, and outdoor telecom enclosures. |
Pinout & Package
Package: 1.5KE molded epoxy case (DO-201AD), RoHS-compliant matte tin-plated leads, UL 94 V-0 rated molding compound, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink path during clamping | Connected to protected line; conducts surge current to ground when VWM exceeded. |
| Cathode | Reference terminal (marked by band) | Typically tied to system ground or higher-potential rail in unidirectional configuration; defines polarity of clamping action. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable breakdown characteristics and long-term reliability under thermal cycling. |
| 1500 W peak pulse rating (10/1000 μs) | Provides robust protection against high-energy transients common in industrial motor controls and power supply outputs. |
| UL 497B listed for telecom | Validates compliance with industry-standard surge immunity requirements for telephone line interface circuits. |
| Low 100 pF capacitance | Minimizes signal attenuation and timing skew on high-speed sensor or communication lines (e.g., RS-485, CAN). |
| Junction temperature limit: +175 °C | Supports operation in thermally demanding environments such as enclosed power converters or automotive ECUs. |
Applications
| Industrial Sensor Protection | Telecom Line Interface |
|---|---|
Use Scenario: Protecting 4–20 mA current-loop sensors in factory automation against inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to clamp transients before reaching analog front-end amplifier. Use Value: Limits clamped voltage to 18.2 V, preventing damage to op-amps rated for ±15 V supplies while maintaining loop accuracy. |
Use Scenario: Surge protection on POTS (Plain Old Telephone Service) line interface cards per GR-1089-CORE. IC Role / Device Role / Timing Role: Primary protection device on tip/ring lines, coordinated with GDT secondary protection. Use Value: UL 497B listing and 1500 W rating ensure compliance with telecom surge immunity standards for central office equipment. |
| Consumer USB Port Protection | Automotive Body Control Module |
Use Scenario: ESD suppression on USB 2.0 D+/D− lines in set-top boxes and smart displays. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector to shunt HBM ±8 kV discharges. Use Value: 100 pF capacitance avoids signal integrity degradation at 480 Mbps while clamping to ≤18.2 V. |
Use Scenario: Transient suppression on LIN bus lines exposed to load dump and alternator ripple in vehicle door modules. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to battery rail to absorb negative-going spikes. Use Value: 175 °C max junction temperature enables placement near power relays without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11A-E3/52 (Vishay) | Same VWM (11 V), lower PPPM (600 W), smaller SMB package (3.5 mm × 3.5 mm), 100 pF capacitance. | Better suited for space-constrained PCBs; insufficient for 1500 W surge events requiring 1.5KE footprint. | Select SMBJ11A-E3/52 only when board area is critical and surge energy is ≤600 W. |
| P6KE11A (Littelfuse) | Identical 1.5KE package, same VWM/VC specs, but rated for 600 W peak pulse power (not 1500 W); 100 pF capacitance. | Not suitable as direct replacement where 1500 W capability is required per IEC 61000-4-5 Level 4 testing. | Use P6KE11A only in legacy designs where original 1500 W requirement has been re-evaluated downward. |
Compared with SMBJ11A-E3/52 and P6KE11A, the LCE11A-E3/54 uniquely delivers 1500 W surge handling in the 1.5KE form factor-critical for industrial and telecom applications requiring full IEC 61000-4-5 compliance-while maintaining identical 11 V standoff and 100 pF capacitance.
Availability
LCE11A-E3/54 is available at Aetrix Electronics and suitable for industrial sensor protection, telecom line interface, and automotive body control module designs requiring stable component supply and UL-listed surge performance.
Supply support for LCE11A-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, power handling, and industry certifications.
The LCE11A-E3/54 belongs to Vishay's TRANSZORB® low-capacitance TVS family, engineered specifically for high-energy transient suppression in telecom, industrial, and automotive signal-line applications where both speed and robustness are essential.
FAQ
What is the maximum clamping voltage of the LCE11A-E3/54 under standard test conditions?
The LCE11A-E3/54 has a maximum clamping voltage (VC) of 18.2 V when subjected to an 82 A peak pulse current with a 10/1000 μs waveform at TA = 25 °C. This value is measured per Figure 3 in Vishay document 88357 and defines the upper voltage limit imposed on protected circuitry during surge events. The LCE11A-E3/54 maintains this clamping performance across its full operating temperature range.
Is the LCE11A-E3/54 suitable for bidirectional signal line protection?
No, the LCE11A-E3/54 is a unidirectional TVS diode, designed for DC-biased or ground-referenced lines. For AC or bipolar signal lines (e.g., RS-485, telephone pairs), two LCE11A-E3/54 devices must be used in series opposition, as shown in Figure 4 of the datasheet. The LCE11A-E3/54 itself does not provide symmetrical clamping in both directions.
Does the LCE11A-E3/54 meet RoHS and lead-free assembly requirements?
Yes, the LCE11A-E3/54 carries the "E3" suffix, indicating full RoHS compliance per Directive 2011/65/EU and qualification for lead-free reflow soldering per J-STD-020. Its matte tin-plated leads are solderable per J-STD-002 and JESD 22-B102, and it passes JESD 201 Class 1A whisker testing. The LCE11A-E3/54 is rated for solder dip at 275 °C for up to 10 seconds.
What is the junction capacitance of the LCE11A-E3/54, and how does it affect high-speed signal lines?
The LCE11A-E3/54 has a maximum junction capacitance of 100 pF at 0 V, measured per the electrical characteristics table in document 88357. This low value minimizes loading on signal paths up to ~10 MHz, making it appropriate for USB 2.0, CAN, RS-485, and sensor analog outputs. Higher-frequency interfaces (e.g., USB 3.0 or HDMI) require sub-5 pF devices and are not supported by the LCE11A-E3/54.
Can the LCE11A-E3/54 replace the P6KE11A in existing designs?
The LCE11A-E3/54 shares the same 1.5KE package and VWM/VC values as P6KE11A but delivers 1500 W peak pulse power versus P6KE11A's 600 W rating. Direct substitution is possible only if the design's surge requirement remains ≤600 W; otherwise, the LCE11A-E3/54 provides enhanced protection margin. Thermal and layout compatibility is maintained due to identical footprint and polarity marking.
LCE11A-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 82A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
LCE11A-E3/54 FAQ
1.How can I place an order for LCE11A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for LCE11A-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 LCE11A-E3/54 reliable?
The price and inventory of LCE11A-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 LCE11A-E3/54 is usually 5 days.
3.What payment methods are accepted for LCE11A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LCE11A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LCE11A-E3/54?
LCE11A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LCE11A-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 LCE11A-E3/54?
For technical support, including LCE11A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LCE11A-E3/54 requirements.
6.How does Aetrix verify that LCE11A-E3/54 is sourced from the original manufacturer or authorized distributors?
All LCE11A-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 LCE11A-E3/54 meets industry standards.
7.What is the process for return or replacement of LCE11A-E3/54?
All LCE11A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with LCE11A-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 LCE11A-E3/54 part is unused and in its original packaging.
Return procedure for LCE11A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LCE11A-E3/54 Tags
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