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Vishay General Semiconductor - Diodes Division LCE11A-E3/73
- Part No.:
- LCE11A-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
LCE11A-E3/73.pdf
- Description:
- TVS DIODE 11VWM 18.2VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:5,381
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Product details
Overview
LCE11A-E3/73 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power rails and signal lines. It features a 11.0 V stand-off voltage (VWM), 12.2–13.5 V breakdown voltage (VBR), 1500 W peak pulse power (10/1000 µs), 18.2 V maximum clamping voltage at 82 A peak current, and operates across –65 °C to +175 °C junction temperature.
For engineers reviewing the LCE11A-E3/73 datasheet, LCE11A-E3/73 pinout, LCE11A-E3/73 application, or LCE11A-E3/73 equivalent, key selection criteria include clamping performance under 10/1000 µs surge, unidirectional polarity configuration, 1.5KE package compatibility, low incremental surge resistance, and UL 497B listing for telecom surge protection.
Technical Context
The LCE11A-E3/73 employs a glass-passivated silicon junction optimized for fast response (<1 ns) to transient events such as ESD, lightning-induced surges, and inductive switching spikes. Its unidirectional architecture provides reverse-biased clamping only, requiring correct polarity installation relative to the protected line.
It delivers 1500 W peak pulse power with a 10/1000 µs waveform at 0.01 % duty cycle and maintains stable clamping up to 175 °C junction temperature, supported by a molded epoxy case rated UL 94 V-0 and matte tin-plated leads compliant with J-STD-002 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 12.2 V / 13.5 V - Voltage at which device enters avalanche breakdown at 1 mA test current |
| VC @ IPP | 18.2 V at 82 A - Clamped voltage during 10/1000 µs surge, limiting stress on downstream ICs |
| PPPM | 1500 W - Peak transient energy absorption capability per single pulse |
| Junction Temp Range | –65 °C to +175 °C - Enables use in under-hood automotive, industrial power supplies, and telecom base stations |
| Capacitance | 100 pF at 0 V - Low enough for <10 MHz signal line protection without signal integrity degradation |
| Polarity | Unidirectional - Requires cathode (banded end) connected toward positive rail for DC line protection |
Pinout & Package
Package: 1.5KE molded epoxy case (DO-201AD), axial-leaded, RoHS-compliant, UL 497B listed. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Transient current sink path | Connected to ground or lower-potential node; carries full surge current during clamping |
| Cathode (banded end) | Protected line interface | Connected to line being protected; defines polarity and clamping threshold relative to reference |
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 rating | Withstands IEC 61000-4-5 Level 4 (4 kV) surges on 2 Ω source impedance without failure |
| UL 497B certification | Validated for telecom primary-side AC/DC power input protection per industry safety standard |
| Low incremental surge resistance | Minimizes VC overshoot during high-di/dt transients, improving protection margin for MOSFETs and logic ICs |
| JESD 201 Class 1A whisker resistance | Prevents tin whisker growth in high-reliability applications including industrial control and infrastructure equipment |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of gate drivers and feedback sensing circuits against flyback voltage spikes from IGBT/MOSFET switching in variable-frequency drives. IC Role / Device Role / Timing Role: Unidirectional TVS placed across DC bus or gate resistor to clamp inductive kickback before it reaches control ICs. Use Value: Limits transient voltage to ≤18.2 V, preventing latch-up or oxide damage in 20 V-rated gate drivers and op-amps. | Use Scenario: Input-stage surge suppression on AC/DC rectifier outputs in DSLAMs and optical line terminals. IC Role / Device Role / Timing Role: Primary-side clamping element in UL 497B-compliant telecom power entry modules. Use Value: Absorbs 1500 W surges while maintaining VWM = 11.0 V to avoid false triggering during normal 12 V nominal operation. |
| Automotive Body Control Modules | Consumer Audio Amplifiers |
Use Scenario: Protection of LIN bus transceivers and microcontroller I/O pins against load dump and jump-start transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Point-of-load TVS on power input and communication lines, mounted close to protected ICs. Use Value: Withstands 175 °C junction temperature and clamps 82 A surges within 1 ns, preserving signal integrity during cold-cranking events. | Use Scenario: DC rail protection in Class D audio amplifier power stages exposed to speaker short-circuit transients. IC Role / Device Role / Timing Role: Clamp diode across +12 V supply rail to prevent overvoltage shutdown during speaker wire arcing. Use Value: 100 pF capacitance avoids high-frequency oscillation in >100 kHz PWM output stages while delivering 1500 W surge handling. |
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 | Lower peak power (600 W), smaller SMB package (vs. 1.5KE), same VWM/VC specs | Suitable for space-constrained PCBs but not for high-energy telecom or industrial surges | Select when board area is critical and surge threat level is ≤IEC 61000-4-5 Level 2 |
| 1.5KE11A | Identical electrical specs and 1.5KE package; differs only in Vishay's internal part numbering and RoHS suffixing (E3/73 vs. standard E3) | No functional difference; both meet UL 497B and JESD 201 Class 1A | Drop-in replacement if sourcing flexibility or tape-and-reel configuration (73 vs. 54) is required |
Compared with SMBJ11A and 1.5KE11A, the LCE11A-E3/73 offers identical clamping performance and package form factor as 1.5KE11A but with verified E3/73 reel packaging for automated assembly, while providing significantly higher surge energy handling than SMBJ11A for mission-critical infrastructure applications.
Availability
LCE11A-E3/73 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, and automotive body control modules requiring stable component supply, UL-certified surge protection, and high-temperature operational reliability.
Supply support for LCE11A-E3/73 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, power efficiency, and application-specific validation.
The LCE11A-E3/73 belongs to Vishay's Low Capacitance TRANSZORB® family, engineered specifically for high-energy transient suppression in telecom, industrial, and automotive DC power and signal interfaces where clamping speed and energy absorption are critical.
FAQ
What is the maximum clamping voltage of the LCE11A-E3/73 under surge conditions?
The LCE11A-E3/73 has a maximum clamping voltage (VC) of 18.2 V at 82 A peak pulse current (IPP) with a 10/1000 µs waveform. This value is measured per Figure 3 in the Vishay datasheet 88357 and defines the upper voltage limit imposed on protected circuitry during transient events. The LCE11A-E3/73 maintains this clamping performance across its full operating temperature range.
Is the LCE11A-E3/73 suitable for AC line protection?
No - the LCE11A-E3/73 is unidirectional and rated for DC applications only. For AC line protection, Vishay recommends using two LCE11A-E3/73 devices in anti-parallel configuration, as shown in Figure 4 of datasheet 88357. Direct AC application would cause forward conduction and failure. The LCE11A-E3/73 must be applied with correct polarity alignment relative to the protected DC rail.
Does the LCE11A-E3/73 meet UL 497B requirements?
Yes - the LCE11A-E3/73 is UL listed for Telecom application protection per UL 497B (File E136766), as confirmed in the "Note" section on page 2 of Vishay document 88357. This certification validates its suitability for primary-side surge protection in telecom power entry circuits, including DSLAMs and base station power supplies.
What is the lead finish and solderability specification for the LCE11A-E3/73?
The LCE11A-E3/73 features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. It supports solder dipping at 275 °C maximum for 10 seconds per JESD 22-B106. The E3 suffix also confirms compliance with JESD 201 Class 1A whisker testing, making the LCE11A-E3/73 appropriate for high-reliability industrial and automotive applications.
How does the LCE11A-E3/73 compare to standard 1.5KE series TVS diodes?
The LCE11A-E3/73 is functionally identical to the 1.5KE11A in electrical parameters and package, differing only in Vishay's internal part numbering and packaging configuration (E3/73 denotes 73 mm tape pitch). Both share the same VWM, VBR, VC, PPPM, and thermal ratings. The LCE11A-E3/73 is not a "low-capacitance" variant - its 100 pF capacitance matches the standard 1.5KE series, as confirmed in Table "ELECTRICAL CHARACTERISTICS" on page 2 of datasheet 88357.
LCE11A-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- 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-E3/73 FAQ
1.How can I place an order for LCE11A-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for LCE11A-E3/73 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-E3/73 reliable?
The price and inventory of LCE11A-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LCE11A-E3/73 is usually 5 days.
3.What payment methods are accepted for LCE11A-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LCE11A-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LCE11A-E3/73?
LCE11A-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LCE11A-E3/73 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-E3/73?
For technical support, including LCE11A-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LCE11A-E3/73 requirements.
6.How does Aetrix verify that LCE11A-E3/73 is sourced from the original manufacturer or authorized distributors?
All LCE11A-E3/73 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-E3/73 meets industry standards.
7.What is the process for return or replacement of LCE11A-E3/73?
All LCE11A-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with LCE11A-E3/73, 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-E3/73 part is unused and in its original packaging.
Return procedure for LCE11A-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LCE11A-E3/73 Tags
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