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Vishay General Semiconductor - Diodes Division LCE15A-E3/73
- Part No.:
- LCE15A-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
LCE15A-E3/73.pdf
- Description:
- TVS DIODE 15VWM 24.4VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:5,722
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Product details
Overview
LCE15A-E3/73 from Vishay General Semiconductor is a unidirectional low-capacitance TRANSZORB® transient voltage suppressor (TVS) diode designed for primary-side overvoltage clamping in DC power rails and signal lines. It features a 15.0 V standoff voltage (VWM), 16.7–18.5 V breakdown range (VBR), 24.4 V maximum clamping voltage at 61 A peak pulse current, 1500 W peak pulse power (10/1000 µs), and operates from –65 °C to +175 °C junction temperature.
For engineers reviewing the LCE15A-E3/73 datasheet, LCE15A-E3/73 pinout, LCE15A-E3/73 application, or LCE15A-E3/73 equivalent, key selection criteria include clamping performance under 10/1000 µs surges, unidirectional polarity for DC rail protection, UL 497B listing for telecom interfaces, RoHS-compliant matte tin leads, and compatibility with J-STD-002 solderability standards.
Technical Context
The LCE15A-E3/73 employs a glass-passivated silicon junction optimized for fast response (<1 ps) to ESD and lightning-induced transients. Its low incremental surge resistance ensures stable clamping across repetitive 0.01% duty cycle pulses, while the molded epoxy case meets UL 94 V-0 flammability rating.
Designed for unidirectional operation, it conducts only during reverse overvoltage events-blocking up to 15.0 V in normal operation and clamping at ≤24.4 V when subjected to 61 A (10/1000 µs). The device's 100 pF junction capacitance minimizes signal distortion on data lines up to ~10 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15.0 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 16.7 V / 18.5 V - Breakdown occurs within this range at 1 mA test current; defines turn-on threshold tolerance |
| VC @ IPP | 24.4 V at 61 A - Clamped voltage during 10/1000 µs surge; determines protected circuit's max stress level |
| PPPM | 1500 W - Peak pulse power handling capability; supports high-energy transients per IEEE C62.41 |
| Junction Capacitance | 100 pF at 0 V - Low enough for USB 2.0, RS-485, and CAN FD signal line protection without bandwidth degradation |
| TJ Range | –65 °C to +175 °C - Enables deployment in under-hood automotive, industrial motor drives, and outdoor telecom enclosures |
Pinout & Package
Package: Case Style 1.5KE - axial-leaded, molded epoxy body with color band denoting cathode end; RoHS-compliant matte tin plated leads; 0.375" (9.5 mm) lead length; UL 94 V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional clamp configuration |
| Cathode (banded end) | Reverse-biased clamping terminal | Connected to protected line (e.g., +12 V rail or signal input); conducts during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable breakdown characteristics over 1000+ surge cycles without parameter drift |
| 1500 W peak pulse power (10/1000 µs) | Withstands Level 4 IEC 61000-4-5 surges (4 kV, 2 Ω source impedance) on 12 V DC systems |
| UL 497B listed | Qualified for telecom interface protection including POTS, DSL, and T1/E1 line cards per ANSI/UL standard |
| Low 100 pF junction capacitance | Preserves signal integrity on 10 Mbps RS-485 buses and 480 Mbps USB 2.0 data lines |
| JESD 201 Class 1A whisker resistance | Prevents tin whisker growth under thermal cycling, ensuring long-term reliability in automotive ECUs |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate driver ICs and microcontroller I/O pins against inductive kickback from relay coils and solenoid loads. IC Role / Device Role / Timing Role: Unidirectional TVS placed between MCU GPIO and load switch output to clamp negative flyback spikes. Use Value: Limits voltage excursion to ≤24.4 V, preventing latch-up or oxide damage in 3.3 V/5 V logic interfaces. | Use Scenario: Input protection for LIN bus transceivers and sensor supply lines exposed to battery dump energy and load-dump transients. IC Role / Device Role / Timing Role: Primary clamping device on 12 V sensor feed lines upstream of LDO regulators. Use Value: Absorbs 1500 W surges per ISO 7637-2 Pulse 5a without degradation, maintaining system uptime. |
| Telecom DSL Line Cards | Consumer USB-C Power Delivery Ports |
Use Scenario: Secondary protection on ADSL/VDSL line interface transformers against lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Paired unidirectional TVS units (cathodes tied) across transformer secondary windings. Use Value: UL 497B certification validates compliance with telecom safety requirements for subscriber line protection. | Use Scenario: Overvoltage suppression on VBUS lines in USB-C receptacles subject to hot-plug and adapter fault conditions. IC Role / Device Role / Timing Role: Clamp component placed between connector and PD controller's VBUS monitor input. Use Value: 100 pF capacitance avoids skewing CC line timing; 24.4 V clamping prevents false overvoltage shutdowns. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A-E3/52 | Same VWM (15 V), lower PPPM (600 W), SMC package (surface-mount) | Not suitable for through-hole legacy designs; requires PCB rework for footprint change | Select when board space is constrained and automated assembly is required |
| 1.5KE15A | Identical electrical specs and 1.5KE package; non-RoHS version with SnPb leads | Not compliant with EU RoHS Directive 2011/65/EU; restricted for new commercial designs | Select only for repair of legacy equipment where lead-free compliance is not mandated |
Compared with SMBJ15A-E3/52 and 1.5KE15A, the LCE15A-E3/73 uniquely combines RoHS compliance, axial-leaded 1.5KE packaging, UL 497B listing, and full 1500 W surge capability-making it optimal for new telecom and industrial designs requiring certified through-hole TVS protection.
Availability
LCE15A-E3/73 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom DSL line cards requiring stable component supply, long-lifecycle support, and certified surge immunity.
Supply support for LCE15A-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 LCE15A-E3/73 belongs to Vishay's TRANSZORB® low-capacitance TVS family, engineered specifically for high-energy transient suppression in telecom infrastructure, automotive electronics, and industrial control systems where clamping precision and safety certification are critical.
FAQ
What is the clamping voltage of the LCE15A-E3/73 under a 10/1000 µs surge?
The LCE15A-E3/73 clamps at a maximum of 24.4 V when subjected to a 61 A peak pulse current with a 10/1000 µs waveform. This value is measured per Figure 3 in Vishay document 88357 and represents the upper limit of voltage seen by downstream circuitry during standardized surge events. The LCE15A-E3/73 maintains this clamping performance across its full operating temperature range.
Is the LCE15A-E3/73 RoHS compliant and what does the "E3" suffix indicate?
Yes, the LCE15A-E3/73 is RoHS compliant. The "E3" suffix denotes matte tin-plated leads meeting J-STD-002 solderability requirements and passing JESD 201 Class 1A whisker testing. It also confirms compliance with Directive 2011/65/EU, making the LCE15A-E3/73 suitable for commercial and industrial applications in regulated markets.
Does the LCE15A-E3/73 have UL certification, and for which standards?
Yes, the LCE15A-E3/73 is UL listed under file number E136766 for Telecom Application Protection per UL 497B. This certification validates its suitability for use in telephone network interface circuits, including DSL line cards and POTS equipment, where safety isolation and surge withstand are mandated.
What is the junction capacitance of the LCE15A-E3/73 and how does it affect signal integrity?
The LCE15A-E3/73 has a maximum junction capacitance of 100 pF at 0 V. This low value minimizes loading on high-speed signal lines-enabling use on RS-485 (≤10 Mbps), USB 2.0 (480 Mbps), and CAN FD (5 Mbps) without measurable rise-time degradation or reflection-induced errors. The LCE15A-E3/73 is therefore appropriate for data line protection where bandwidth preservation is essential.
Can the LCE15A-E3/73 be used for AC line protection?
No-the LCE15A-E3/73 is unidirectional and not rated for bidirectional AC waveforms. For AC line protection, Vishay recommends using two LCE15A-E3/73 devices in anti-parallel configuration (anode-to-cathode), as shown in Figure 4 of document 88357. Standalone use on AC mains or transformer secondaries is not supported; the LCE15A-E3/73 is intended for DC or single-polarity signal line protection.
LCE15A-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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 61A
- 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
LCE15A-E3/73 FAQ
1.How can I place an order for LCE15A-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for LCE15A-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 LCE15A-E3/73 reliable?
The price and inventory of LCE15A-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 LCE15A-E3/73 is usually 5 days.
3.What payment methods are accepted for LCE15A-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LCE15A-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LCE15A-E3/73?
LCE15A-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LCE15A-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 LCE15A-E3/73?
For technical support, including LCE15A-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LCE15A-E3/73 requirements.
6.How does Aetrix verify that LCE15A-E3/73 is sourced from the original manufacturer or authorized distributors?
All LCE15A-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 LCE15A-E3/73 meets industry standards.
7.What is the process for return or replacement of LCE15A-E3/73?
All LCE15A-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with LCE15A-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 LCE15A-E3/73 part is unused and in its original packaging.
Return procedure for LCE15A-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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