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Vishay General Semiconductor - Diodes Division LCE22-E3/54
- Part No.:
- LCE22-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
LCE22-E3/54.pdf
- Description:
- TVS DIODE 22VWM 39.4VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,950
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Product details
Overview
LCE22-E3/54 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection of sensitive electronics. It features a 22.0 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR), 1500 W peak pulse power (10/1000 µs), 42 A peak pulse current (IPPM), and clamps to ≤35.5 V at rated surge. It is used in DC power rail and signal line protection for industrial sensors and telecom interfaces.
For engineers reviewing the LCE22-E3/54 datasheet, LCE22-E3/54 pinout, LCE22-E3/54 application, or LCE22-E3/54 equivalent, key selection criteria include verified unidirectional clamping behavior, UL 497B listing for telecom surge protection, 1.5KE package thermal derating up to 175 °C junction temperature, and RoHS-compliant matte tin-plated leads per J-STD-002.
Technical Context
The LCE22-E3/54 operates as a silicon avalanche diode with glass-passivated chip junction, enabling fast response (<1 ns) to transient events such as inductive switching spikes and ESD. Its low incremental surge resistance ensures stable clamping under repetitive 10/1000 µs surges at 0.01 % duty cycle.
It is rated for continuous power dissipation of 6.5 W on an infinite heatsink at TL = 75 °C and supports operating junction temperatures from –65 °C to +175 °C. The device meets UL 497B (file E136766) for telecom application protection and complies with JESD 201 Class 1A whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22.0 V - Maximum continuous reverse working voltage before conduction begins |
| VBR (min/max) | 24.4 V / 26.9 V - Measured at 1 mA test current; defines guaranteed avalanche onset range |
| IPPM | 42 A - Peak surge current capability under 10/1000 µs waveform, critical for IEC 61000-4-5 compliance |
| VC | ≤35.5 V - Clamped voltage at IPPM; determines protected circuit's maximum transient stress level |
| PPPM | 1500 W - Peak pulse power handling capacity; enables protection against high-energy transients |
| Junction Temp | –65 °C to +175 °C - Enables deployment in harsh environments including industrial motor controls and outdoor telecom nodes |
Pinout & Package
Package: 1.5KE molded epoxy case (Case Style 1.5KE), UL 94 V-0 rated, with matte tin-plated leads. Polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink path during reverse-biased clamping | Connected to protected line; conducts surge current to ground when VWM exceeded |
| Cathode | Reference terminal (marked by color band) | Connected to system ground or lower-potential rail; defines unidirectional conduction direction |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable avalanche characteristics and long-term reliability under thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Supports Level 4 IEC 61000-4-5 surge immunity without external series impedance |
| UL 497B listed (E136766) | Validated for telecom interface protection including POTS, DSL, and T1/E1 lines |
| RoHS-compliant, JESD 201 Class 1A | Enables use in lead-free assembly processes with no whisker risk in high-reliability applications |
Applications
| Industrial Sensor Protection | DC Power Rail Protection |
|---|---|
Use Scenario: Protecting 24 V analog sensor outputs (e.g., 4–20 mA loops) from inductive kickback and EFT bursts. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to clamp transients before they reach ADC or op-amp inputs. Use Value: Limits transient voltage to ≤35.5 V, preserving signal integrity and preventing latch-up in downstream analog front-end ICs. | Use Scenario: Safeguarding 24 V DC input rails in programmable logic controllers (PLCs) against load dump and hot-swap surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp located at board-level power entry, upstream of DC/DC converters and regulators. Use Value: Absorbs 1500 W pulses without degradation, maintaining system uptime and eliminating need for redundant fusing. |
| Telecom Line Interface | Automotive Body Control Module |
Use Scenario: Protecting RS-485 transceivers and line drivers in building automation networks exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS connected across differential pair (A/B to GND) to suppress common-mode transients. Use Value: UL 497B certification confirms suitability for telecom-grade surge immunity per ANSI/IEEE C62.41. | Use Scenario: Shielding LIN bus transceivers and microcontroller I/O pins from battery reverse polarity and jump-start transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on LIN data line, leveraging 22 V VWM to tolerate normal 12 V system swings while blocking surges. Use Value: Clamps to ≤35.5 V within nanoseconds, preventing damage to 5 V tolerant LIN PHY circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | Same VWM (22 V), lower PPPM (600 W), SMB package (smaller footprint, lower thermal mass) | Better suited for space-constrained PCBs with lower surge energy requirements (e.g., consumer USB ports) | Select SMBJ22A only if system-level surge testing validates <600 W capability and thermal design accommodates reduced power handling. |
| 1.5KE22A | Identical electrical specs and 1.5KE package; differs only in packaging suffix (bulk vs. tape-and-reel) and RoHS status (non-E3 variant) | No functional difference; used where RoHS exemption or legacy procurement rules apply | Choose 1.5KE22A only when LCE22-E3/54 is unavailable and non-RoHS compliance is acceptable per program requirements. |
Compared with SMBJ22A and 1.5KE22A, the LCE22-E3/54 provides certified UL 497B compliance, JESD 201 Class 1A whisker resistance, and guaranteed 1500 W surge handling in a RoHS-compliant 1.5KE package-making it preferred for industrial and telecom designs requiring full regulatory traceability and long-term supply stability.
Availability
LCE22-E3/54 is available at Aetrix Electronics and suitable for industrial sensor protection, telecom line interface, and automotive body control module applications requiring stable component supply and full regulatory documentation.
Supply support for LCE22-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, MOSFETs, and protection devices with emphasis on reliability and application-specific performance.
The LCE series belongs to Vishay's low-capacitance TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in industrial, telecom, and automotive power and signal lines where clamping precision and thermal robustness are critical.
FAQ
What is the clamping voltage of the LCE22-E3/54 at its rated peak pulse current?
The LCE22-E3/54 clamps to a maximum of 35.5 V when subjected to its rated peak pulse current of 42 A (10/1000 µs waveform). This value is measured per Figure 3 in the official Vishay datasheet (Document Number: 88357) and defines the upper voltage limit imposed on protected circuitry during surge events. Maintaining this clamping level ensures compatibility with 3.3 V, 5 V, and 24 V logic and analog components downstream.
Is the LCE22-E3/54 suitable for AC line protection?
No-the LCE22-E3/54 is a unidirectional TVS diode and is not rated for bidirectional AC line protection. For AC applications like mains input or RS-485 differential pairs, Vishay recommends using two LCE22-E3/54 devices in parallel but opposite polarity, as shown in Figure 4 of the datasheet. Direct AC use without polarity pairing risks failure during negative half-cycles.
Does the LCE22-E3/54 meet UL 497B certification?
Yes-the LCE22-E3/54 is UL listed for Telecom Application Protection under UL 497B, file number E136766, as confirmed in the "Note" section of the Vishay datasheet (88357, page 2). This certification validates its suitability for surge protection in telephone line interfaces, DSL modems, and other telecom infrastructure equipment meeting ANSI/IEEE C62.41 standards.
What is the maximum operating junction temperature for the LCE22-E3/54?
The LCE22-E3/54 has a maximum operating junction temperature of +175 °C, with a storage temperature range from –65 °C to +175 °C. This rating allows reliable operation in high-ambient environments such as engine compartments, industrial motor drives, and outdoor base stations-provided PCB layout and thermal relief meet Vishay's recommended pad dimensions and copper pour guidelines.
What does the "E3/54" suffix indicate in LCE22-E3/54?
The "E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards; "54" specifies the preferred package code for 13-inch paper tape and reel delivery (1400 units per reel). This ordering code ensures traceable, whisker-tested, lead-free assembly readiness per JESD 201 Class 1A.
LCE22-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):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 39.4V
- Current - Peak Pulse (10/1000µs):
- 38A
- 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
LCE22-E3/54 FAQ
1.How can I place an order for LCE22-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for LCE22-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 LCE22-E3/54 reliable?
The price and inventory of LCE22-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 LCE22-E3/54 is usually 5 days.
3.What payment methods are accepted for LCE22-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LCE22-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LCE22-E3/54?
LCE22-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LCE22-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 LCE22-E3/54?
For technical support, including LCE22-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LCE22-E3/54 requirements.
6.How does Aetrix verify that LCE22-E3/54 is sourced from the original manufacturer or authorized distributors?
All LCE22-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 LCE22-E3/54 meets industry standards.
7.What is the process for return or replacement of LCE22-E3/54?
All LCE22-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with LCE22-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 LCE22-E3/54 part is unused and in its original packaging.
Return procedure for LCE22-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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