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Vishay General Semiconductor - Diodes Division LCE7.0-E3/73
- Part No.:
- LCE7.0-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
LCE7.0-E3/73.pdf
- Description:
- TVS DIODE 7VWM 13.3VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:5,836
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Product details
Overview
LCE7.0-E3/73 from Vishay General Semiconductor is a unidirectional low-capacitance TRANSZORB® transient voltage suppressor (TVS) diode designed for robust overvoltage protection of sensitive signal lines. It features a 7.0 V stand-off voltage (VWM), 7.78–8.6 V breakdown voltage (VBR), 1500 W peak pulse power (10/1000 μs), 12.0 V maximum clamping voltage at 100 A IPP, and operates across –65 °C to +175 °C junction temperature. It is used in consumer electronics, industrial sensor interfaces, and telecom line protection.
For engineers reviewing the LCE7.0-E3/73 datasheet, LCE7.0-E3/73 pinout, LCE7.0-E3/73 application, or LCE7.0-E3/73 equivalent, key selection criteria include its 12.0 V clamping performance at 100 A surge, unidirectional polarity with cathode band marking, 1.5KE package compatibility, and UL 497B listing for telecom surge protection.
Technical Context
The LCE7.0-E3/73 employs a glass-passivated silicon junction for stable avalanche clamping under fast transients. Its 10/1000 μs waveform response enables reliable suppression of inductive switching spikes and lightning-induced surges without thermal runaway.
Designed for line-level protection, it delivers low incremental surge resistance and excellent clamping ratio (VC/VBR ≈ 1.45), ensuring minimal overshoot during ESD or surge events. The device is rated for repetitive 0.01% duty cycle operation and meets JESD 22-B106 solderability standards (275 °C, 10 s).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 7.78 V / 8.6 V - Verified avalanche breakdown range at 10 mA test current |
| VC @ IPP = 100 A | 12.0 V - Clamped voltage during 10/1000 μs surge, limiting downstream IC stress |
| PPPM | 1500 W - Peak transient energy absorption capability per IEC 61000-4-5 waveform |
| Capacitance | 100 pF @ 0 V - Low enough for <10 MHz signal integrity preservation |
| TJ max | +175 °C - Enables use in high-ambient industrial or automotive under-hood environments |
| Polarity | Unidirectional - Cathode-marked for DC-biased line protection only |
Pinout & Package
Package: 1.5KE molded epoxy case (DO-201AD), RoHS-compliant matte tin-plated leads, UL 94 V-0 rated molding compound, polarity indicated by cathode color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to circuit ground or lowest potential node during clamping |
| Cathode | Protected line input terminal | Marked with color band; connects to signal/power line requiring overvoltage protection |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable avalanche characteristics over lifetime and temperature |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) without degradation |
| UL 497B listed | Validated for telecom interface protection per industry safety standard E136766 |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot during transient events, reducing risk to downstream ICs |
| JESD 22-B106 solderability | Supports automated reflow and wave soldering up to 275 °C for 10 seconds |
Applications
| Industrial Sensor Interface Protection | Consumer Audio Line Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in PLC modules from inductive kickback and EFT bursts. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and microcontroller ADC input. Use Value: Clamps transients to ≤12.0 V, preserving 12-bit ADC accuracy and preventing latch-up in 3.3 V or 5 V signal chains. | Use Scenario: Shielding line-out and headphone outputs in smart speakers from electrostatic discharge during user handling. IC Role / Device Role / Timing Role: TVS mounted directly at jack connector to shunt ESD before reaching audio codec or amplifier. Use Value: 100 pF capacitance avoids high-frequency roll-off; 12.0 V clamping prevents pop-noise and amplifier shutdown. |
| Telecom DSL Line Protection | Automotive Body Control Module Inputs |
Use Scenario: Safeguarding ADSL/VDSL line drivers and receivers against lightning-induced surges on twisted-pair copper lines. IC Role / Device Role / Timing Role: Paired unidirectional LCE7.0-E3/73 units protect differential pairs in compliance with ITU-T K.20/K.21. Use Value: UL 497B certification ensures regulatory acceptance; 1500 W rating covers worst-case induced surges up to 10 kV. | Use Scenario: Guarding 12 V switch inputs (e.g., door lock, window switch) against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: TVS connected between switch line and chassis ground to clamp negative transients. Use Value: 175 °C max junction temperature supports under-dash mounting; 7.0 V VWM matches nominal 12 V system thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A | Same VWM (7.0 V) and VC (12.0 V), but lower PPPM (600 W) and SMB package (smaller footprint) | Lower surge capacity limits use to sub-IEC Level 3 environments; not UL 497B listed | Select when board space is constrained and surge threat level is limited to ESD/EFT only |
| 1.5KE7.0A | Identical electrical specs and 1.5KE package, but non-RoHS (E2 suffix) and no E3 whisker testing | No material compliance for modern commercial/industrial BOMs requiring JESD 201 Class 1A | Choose only for legacy repair or non-RoHS-restricted applications where whisker reliability is not critical |
Compared with SMBJ7.0A and 1.5KE7.0A, the LCE7.0-E3/73 uniquely combines full UL 497B certification, RoHS + whisker-tested leads, and 1500 W surge rating in the 1.5KE form factor-making it optimal for new telecom and industrial designs requiring certified, high-energy protection.
Availability
LCE7.0-E3/73 is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line protection, and automotive body control module inputs requiring stable component supply and long-term lifecycle assurance.
Supply support for LCE7.0-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 LCE7.0-E3/73 belongs to Vishay's low-capacitance TRANSZORB® TVS family, engineered specifically for high-fidelity signal line protection where clamping precision, surge robustness, and regulatory compliance are critical.
FAQ
What is the maximum clamping voltage of the LCE7.0-E3/73 at its rated peak pulse current?
The LCE7.0-E3/73 has a maximum clamping voltage (VC) of 12.0 V at 100 A peak pulse current (IPP) under 10/1000 μs waveform conditions. This value is measured per Figure 3 in the official Vishay datasheet (Document Number: 88357) and defines the upper voltage limit imposed on protected circuits during surge events. Maintaining VC below 12.0 V ensures compatibility with 3.3 V and 5 V logic interfaces downstream of the LCE7.0-E3/73.
Is the LCE7.0-E3/73 suitable for bidirectional AC signal line protection?
No, the LCE7.0-E3/73 is unidirectional and must not be used alone for AC line protection. As stated in the Vishay application note (page 3, Fig. 4), AC protection requires two LCE7.0-E3/73 devices connected in parallel but opposite polarity. Using a single LCE7.0-E3/73 on an AC line would allow conduction during negative half-cycles, risking failure. For true bidirectional protection, consider a dedicated bidirectional TVS such as the SMBJ7.0CA.
Does the LCE7.0-E3/73 meet UL 497B requirements for telecom surge protection?
Yes, the LCE7.0-E3/73 is UL listed for Telecom application protection per UL 497B, with file number E136766. This certification confirms its suitability for protecting telephone line interfaces, DSL modems, and VoIP equipment against lightning-induced surges and other transients defined in the standard. The UL listing applies specifically to the LCE7.0-E3/73 and other LCE-series parts in the 1.5KE package.
What is the junction capacitance of the LCE7.0-E3/73, and how does it affect high-speed signal lines?
The LCE7.0-E3/73 has a maximum junction capacitance of 100 pF at 0 V bias. This low value makes it appropriate for protecting signal lines up to approximately 10 MHz without significant attenuation or timing skew. For higher-frequency interfaces (e.g., USB 2.0 or HDMI), capacitance this high may degrade signal integrity; in those cases, a lower-capacitance TVS such as the ESD9X3.3S (12 pF) would be more suitable than the LCE7.0-E3/73.
What does the "E3/73" suffix indicate in the LCE7.0-E3/73 part number?
The "E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads qualified to JESD 201 Class 1A whisker testing. The "/73" indicates tape-and-reel packaging in 73 mm wide carrier tape, per Vishay's ordering convention. This differs from /54 (13" reel) and confirms the LCE7.0-E3/73 is supplied in industry-standard format compatible with automated SMT placement systems.
LCE7.0-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):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 13.3V
- 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
LCE7.0-E3/73 FAQ
1.How can I place an order for LCE7.0-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for LCE7.0-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 LCE7.0-E3/73 reliable?
The price and inventory of LCE7.0-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 LCE7.0-E3/73 is usually 5 days.
3.What payment methods are accepted for LCE7.0-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LCE7.0-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LCE7.0-E3/73?
LCE7.0-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LCE7.0-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 LCE7.0-E3/73?
For technical support, including LCE7.0-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LCE7.0-E3/73 requirements.
6.How does Aetrix verify that LCE7.0-E3/73 is sourced from the original manufacturer or authorized distributors?
All LCE7.0-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 LCE7.0-E3/73 meets industry standards.
7.What is the process for return or replacement of LCE7.0-E3/73?
All LCE7.0-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with LCE7.0-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 LCE7.0-E3/73 part is unused and in its original packaging.
Return procedure for LCE7.0-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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