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Vishay General Semiconductor - Diodes Division LCE7.5-E3/73
- Part No.:
- LCE7.5-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
LCE7.5-E3/73.pdf
- Description:
- TVS DIODE 7.5VWM 14.3VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,998
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Product details
Overview
LCE7.5-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 7.5 V standoff voltage (VWM), 8.33–9.21 V breakdown voltage (VBR), 1500 W peak pulse power (10/1000 µs), 12.9 V maximum clamping voltage at 250 A, and operates from –65 °C to +175 °C. It is used in DC power rail and signal line protection for industrial sensor interfaces.
For engineers reviewing the LCE7.5-E3/73 datasheet, LCE7.5-E3/73 pinout, LCE7.5-E3/73 application, or LCE7.5-E3/73 equivalent, key selection criteria include clamping performance under 250 A surge, unidirectional polarity, 1.5KE package thermal derating, and UL 497B listing for telecom surge protection.
Technical Context
This TVS diode employs a glass-passivated chip junction and molded epoxy case rated UL 94 V-0. Its low incremental surge resistance enables fast response (<1 ns) and stable clamping during repetitive transients up to 0.01% duty cycle.
The device is optimized for single-polarity DC protection with a color band indicating cathode orientation. It supports soldering per J-STD-002 and JESD 22-B102, and passes JESD 201 Class 1A whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse working voltage before conduction begins |
| VBR (min/max) | 8.33 V / 9.21 V at 10 mA - Confirmed breakdown threshold range for reliable triggering |
| VC @ IPP | 12.9 V at 250 A - Clamped voltage during full-rated 10/1000 µs surge, limiting downstream stress |
| PPPM | 1500 W - Peak pulse power handling capability under standardized surge waveform |
| Junction Temp Range | –65 °C to +175 °C - Enables operation in harsh industrial and automotive under-hood environments |
| Package | 1.5KE - Industry-standard axial-leaded package with 0.375" lead length and UL 94 V-0 molding |
Pinout & Package
Package: 1.5KE axial-leaded, molded epoxy body with matte tin-plated leads; cathode indicated by color band; RoHS-compliant (E3 suffix), JESD 201 Class 1A whisker tested.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional protection configuration |
| Cathode | Reverse-biased blocking terminal | Marked with color band; connected to protected line (e.g., 7.5 V supply rail 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 rating | Withstands high-energy lightning-induced surges per IEC 61000-4-5 (10/1000 µs) |
| UL 497B listed | Validated for telecom interface protection, reducing certification effort for end equipment |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes let-through voltage to protect downstream ICs with tight absolute maximum ratings |
Applications
| Industrial Sensor Interface Protection | DC Power Rail Clamp |
|---|---|
Use Scenario: Protecting analog output lines (e.g., 4–20 mA current loop transmitters) from ESD and inductive switching transients in factory automation systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to shunt surge energy before it reaches precision DAC or op-amp inputs. Use Value: Clamps transients to ≤12.9 V at 250 A, preserving signal integrity and preventing latch-up in 5 V or 3.3 V interface ICs. | Use Scenario: Safeguarding 7.5 V regulated power rails feeding microcontrollers or communication modules in embedded controllers. IC Role / Device Role / Timing Role: Standoff-rated TVS connected anode-to-ground, cathode-to-rail to clamp positive-going surges without leakage during normal operation. Use Value: Maintains 7.5 V nominal operation while suppressing >1 kV transients per ISO 7637-2 Pulse 1/2a, avoiding brownout or reset events. |
| Telecom Line Interface | Automotive Body Control Module |
Use Scenario: Protecting RS-485 or CAN physical layer receivers in telecom base station backplanes exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary unidirectional clamp on DC-coupled data lines, used in conjunction with series impedance for impedance matching. Use Value: UL 497B listing confirms compliance for telecom surge immunity; 175 °C max junction temperature supports operation near power supplies. | Use Scenario: Shielding LIN bus or sensor supply lines in automotive BCMs against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Transient suppressor mounted at connector entry point, with cathode tied to protected 7.5 V sensor rail. Use Value: Withstands repetitive 1500 W pulses at 0.01% duty cycle, meeting OEM requirements for long-life under-hood reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5A | Same VWM (7.5 V), lower PPPM (600 W), SMC package (surface-mount) | Used where PCB space is constrained and reflow assembly is required instead of through-hole | Select SMBJ7.5A when board real estate or automated assembly mandates SMD; verify thermal pad layout for 6.5 W dissipation. |
| 1.5KE7.5A | Identical electrical specs and 1.5KE package; differs only in packaging suffix (E3/73 vs. standard bulk/reel) | No functional difference; identical use in through-hole surge protection circuits | Choose 1.5KE7.5A for standard reel delivery; LCE7.5-E3/73 offers same performance with RoHS-compliant E3 plating and tape-and-reel convenience. |
Compared with SMBJ7.5A and 1.5KE7.5A, the LCE7.5-E3/73 delivers identical 7.5 V standoff and 1500 W surge capability in a RoHS-compliant, whisker-tested 1.5KE package-making it optimal for through-hole industrial designs requiring UL 497B validation and high-temperature reliability.
Availability
LCE7.5-E3/73 is available at Aetrix Electronics and suitable for industrial sensor interfaces, DC power rail clamping, and telecom line protection requiring stable component supply across multi-year production cycles.
Supply support for LCE7.5-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 performance.
The LCE7.5-E3/73 belongs to Vishay's Low Capacitance TRANSZORB® family, engineered for high-energy transient suppression in DC-coupled circuits where fast response and low clamping voltage are critical.
FAQ
What is the standoff voltage rating of the LCE7.5-E3/73?
The LCE7.5-E3/73 has a maximum reverse standoff voltage (VWM) of 7.5 V. This means it remains non-conductive under normal operating conditions up to this DC or RMS voltage level, making it suitable for protecting 7.5 V power rails or signal lines without leakage current interference. The device begins avalanche conduction only when voltage exceeds its specified breakdown range of 8.33–9.21 V.
Does the LCE7.5-E3/73 meet UL safety standards?
Yes, the LCE7.5-E3/73 is UL listed under file E136766 for Telecom Application Protection per UL 497B. This certification validates its suitability for surge protection in telecom infrastructure equipment and reduces end-product safety qualification burden. The device also meets UL 94 V-0 flammability requirements due to its molded epoxy encapsulation.
What is the maximum clamping voltage of the LCE7.5-E3/73 during a surge event?
The LCE7.5-E3/73 clamps to a maximum of 12.9 V when subjected to its rated 250 A peak pulse current (10/1000 µs waveform). This clamping voltage is measured at the device terminals and defines the upper voltage limit imposed on protected circuitry during transient events-critical for ensuring compatibility with 5 V or 3.3 V logic interfaces downstream.
Is the LCE7.5-E3/73 RoHS compliant and lead-free?
Yes, the LCE7.5-E3/73 carries the E3 suffix, confirming full RoHS compliance per Directive 2011/65/EU. Its matte tin-plated leads are solderable per J-STD-002 and JESD 22-B102, and it passes JESD 201 Class 1A whisker testing. No lead or other restricted substances exceed EU-mandated thresholds.
What package type does the LCE7.5-E3/73 use, and what are its mechanical dimensions?
The LCE7.5-E3/73 uses the industry-standard 1.5KE axial-leaded package. Its case is molded epoxy with UL 94 V-0 rating, lead length is 0.375" (9.5 mm), and body diameter is 0.210" (5.3 mm). The cathode is marked by a color band, and the device is designed for through-hole mounting with manual or wave soldering at ≤275 °C for 10 seconds.
LCE7.5-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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 14.3V
- Current - Peak Pulse (10/1000µs):
- 100A
- 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
LCE7.5-E3/73 FAQ
1.How can I place an order for LCE7.5-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for LCE7.5-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 LCE7.5-E3/73 reliable?
The price and inventory of LCE7.5-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 LCE7.5-E3/73 is usually 5 days.
3.What payment methods are accepted for LCE7.5-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LCE7.5-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LCE7.5-E3/73?
LCE7.5-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LCE7.5-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 LCE7.5-E3/73?
For technical support, including LCE7.5-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LCE7.5-E3/73 requirements.
6.How does Aetrix verify that LCE7.5-E3/73 is sourced from the original manufacturer or authorized distributors?
All LCE7.5-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 LCE7.5-E3/73 meets industry standards.
7.What is the process for return or replacement of LCE7.5-E3/73?
All LCE7.5-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with LCE7.5-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 LCE7.5-E3/73 part is unused and in its original packaging.
Return procedure for LCE7.5-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LCE7.5-E3/73 Tags
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