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Vishay General Semiconductor - Diodes Division LCE24A-E3/73
- Part No.:
- LCE24A-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
LCE24A-E3/73.pdf
- Description:
- TVS DIODE 24VWM 38.9VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,400
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Product details
Overview
LCE24A-E3/73 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection of sensitive electronics. It features a 24.0 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR), 38.9 V maximum clamping voltage at 39 A peak pulse current, and 1500 W peak pulse power handling with 10/1000 µs waveform - deployed in power supply input stages and signal line protection for industrial sensors.
For engineers reviewing the LCE24A-E3/73 datasheet, LCE24A-E3/73 pinout, LCE24A-E3/73 application, or LCE24A-E3/73 equivalent, key selection criteria include verified clamping performance under repetitive surge conditions, UL 497B listing for telecom applications, RoHS-compliant matte tin-plated leads, and compatibility with J-STD-002 solderability standards.
Technical Context
This TVS diode uses a glass-passivated chip junction to achieve fast response time (<1 ns) and low incremental surge resistance, enabling effective suppression of ESD and lightning-induced transients. Its unidirectional polarity-marked by a cathode band-supports DC-biased protection paths without reverse conduction during normal operation.
The device operates across –65 °C to +175 °C junction temperature range and is rated for 6.5 W steady-state power dissipation on an infinite heatsink at 75 °C. It meets UL 497B (file E136766) for telecom surge protection and complies with JESD 201 Class 1A whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 26.7 V / 29.5 V - Breakdown occurs within this range at 1.0 mA test current |
| VC @ IPP | 38.9 V @ 39 A - Clamped voltage during 10/1000 µs surge, limiting stress on downstream ICs |
| PPPM | 1500 W - Peak pulse power capability defines transient energy absorption capacity |
| Junction capacitance | 100 pF @ 0 V - Low enough for signal integrity preservation on moderate-speed lines |
| TJ max. | +175 °C - Enables use in high-temperature industrial environments without derating |
| Polarity | Unidirectional - Requires correct orientation relative to DC bias; cathode marked by band |
Pinout & Package
Package: Case Style 1.5KE - molded epoxy body with UL 94 V-0 flammability rating, 0.375" (9.5 mm) lead length, matte tin-plated leads compliant with J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection in unidirectional clamp configuration | Connected to circuit ground or return path when protecting positive rail |
| Cathode | High-side connection; marked by color band | Connected to protected line (e.g., +24 V supply or signal input) |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity in properly designed layouts |
| UL 497B listed (E136766) | Validates suitability for telecom interface protection without additional certification effort |
| JESD 201 Class 1A whisker resistance | Eliminates risk of tin whisker growth in long-life, high-reliability systems |
| RoHS-compliant E3 suffix | Meets EU Directive 2011/65/EU with no restricted substances above threshold limits |
Applications
| Industrial Sensor Signal Protection | 24 V DC Power Input Protection |
|---|---|
Use Scenario: Protecting analog output lines (e.g., 4–20 mA, 0–10 V) of pressure/temperature sensors exposed to relay switching noise and motor drive coupling. IC Role / Device Role / Timing Role: Standby-mode TVS clamps transient spikes before they reach precision ADC or op-amp front-end. Use Value: Maintains sensor accuracy by limiting induced voltage to ≤38.9 V during 39 A surges, preventing latch-up or parametric shift. | Use Scenario: Safeguarding 24 V supply rails feeding PLC I/O modules, HMIs, and fieldbus gateways against load dump and inductive kickback. IC Role / Device Role / Timing Role: Primary overvoltage shunt placed upstream of DC-DC converters and LDOs. Use Value: Absorbs up to 1500 W transient energy without failure, preserving system uptime in factory automation environments. |
| Telecom Line Interface Protection | Automotive Body Control Module Inputs |
Use Scenario: Protecting RS-485/RS-232 transceivers and Ethernet PHYs in network edge devices connected to outside plant wiring. IC Role / Device Role / Timing Role: UL 497B-certified TVS used in pair with matching device for differential line protection. Use Value: Meets telecom surge immunity requirements per GR-1089-CORE while maintaining <100 pF capacitance for signal integrity. | Use Scenario: Shielding microcontroller GPIOs and LIN bus receivers in BCMs from battery transients (load dump, jump start). IC Role / Device Role / Timing Role: Unidirectional clamp referenced to vehicle chassis ground, oriented to block positive-going spikes only. Use Value: Withstands 175 °C junction temperature, enabling placement near hot engine bay components without thermal 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 |
|---|---|---|---|
| SMBJ24A | Same VWM (24 V), lower PPPM (600 W), SMB package (smaller footprint, lower thermal mass) | Better suited for space-constrained PCBs with lower surge exposure (IEC 61000-4-2 ESD only) | Select when board area is critical and peak surge energy is ≤600 W |
| 1.5KE24A | Identical electrical specs and 1.5KE package; differs only in packaging suffix (no /73 tape-and-reel indicator) | No functional difference; identical performance and mounting | Choose for standard reel delivery where E3/73 tape format is not required |
Compared with SMBJ24A and 1.5KE24A, the LCE24A-E3/73 offers full 1500 W surge capacity in the proven 1.5KE outline with UL 497B certification and JESD 201 whisker compliance - making it optimal for industrial and telecom infrastructure where reliability under repeated stress is mandatory.
Availability
LCE24A-E3/73 is available at Aetrix Electronics and suitable for industrial sensor interfaces, 24 V DC power inputs, and telecom line protection requiring stable component supply and long-term lifecycle support.
Supply support for LCE24A-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 and application-specific validation.
The LCE24A-E3/73 belongs to Vishay's Low Capacitance TRANSZORB® family, engineered specifically for high-energy transient suppression in harsh environments where UL certification, thermal robustness, and long-term stability are non-negotiable.
FAQ
What is the clamping voltage of the LCE24A-E3/73 under maximum surge conditions?
The LCE24A-E3/73 has a maximum clamping voltage (VC) of 38.9 V at 39 A peak pulse current with a 10/1000 µs waveform. This value is measured per Figure 3 in the official Vishay datasheet (Doc. #88357) and represents the upper limit of voltage seen by protected circuitry during worst-case transient events. Designers must ensure downstream components tolerate this clamped level.
Is the LCE24A-E3/73 suitable for AC signal line protection?
No - the LCE24A-E3/73 is unidirectional and intended for DC-biased protection only. For AC line protection, Vishay recommends using two LCE24A-E3/73 devices in parallel but opposite polarity, as shown in Figure 4 of the datasheet. Using a single unidirectional device on AC lines risks reverse breakdown and failure during negative half-cycles.
Does the LCE24A-E3/73 meet UL 497B certification?
Yes - the LCE24A-E3/73 is UL listed for Telecom application protection per UL 497B, file number E136766, as confirmed in the "Notes" section of the Vishay datasheet (Document Number 88357). This certification validates its use in telecom interface circuits without requiring additional third-party testing for basic surge immunity compliance.
What is the meaning of the "E3/73" suffix in LCE24A-E3/73?
The "E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 solderability and JESD 201 Class 1A whisker resistance. The "/73" specifies packaging: 7-inch diameter paper tape and reel, with 1400 units per reel - distinct from /54 (13-inch reel) and enabling automated SMT placement compatibility.
Can the LCE24A-E3/73 replace the 1.5KE24A in existing designs?
Yes - the LCE24A-E3/73 shares identical electrical characteristics, thermal ratings, and 1.5KE package dimensions with the 1.5KE24A. The only differences are the E3 RoHS compliance marking and /73 tape-and-reel packaging. No PCB layout or schematic changes are needed, and the LCE24A-E3/73 maintains full functional equivalence in all protection roles.
LCE24A-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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 39A
- 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
LCE24A-E3/73 FAQ
1.How can I place an order for LCE24A-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for LCE24A-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 LCE24A-E3/73 reliable?
The price and inventory of LCE24A-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 LCE24A-E3/73 is usually 5 days.
3.What payment methods are accepted for LCE24A-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LCE24A-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LCE24A-E3/73?
LCE24A-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LCE24A-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 LCE24A-E3/73?
For technical support, including LCE24A-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LCE24A-E3/73 requirements.
6.How does Aetrix verify that LCE24A-E3/73 is sourced from the original manufacturer or authorized distributors?
All LCE24A-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 LCE24A-E3/73 meets industry standards.
7.What is the process for return or replacement of LCE24A-E3/73?
All LCE24A-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with LCE24A-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 LCE24A-E3/73 part is unused and in its original packaging.
Return procedure for LCE24A-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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