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Vishay General Semiconductor - Diodes Division LCE7.0A-E3/73
- Part No.:
- LCE7.0A-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
LCE7.0A-E3/73.pdf
- Description:
- TVS DIODE 7VWM 12VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:7,901
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Product details
Overview
LCE7.0A-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, and operates across –65 °C to +175 °C junction temperature range. It is used in sensor interface protection for industrial automation systems.
For engineers reviewing the LCE7.0A-E3/73 datasheet, LCE7.0A-E3/73 pinout, LCE7.0A-E3/73 application, or LCE7.0A-E3/73 equivalent, key selection criteria include its 12.0 V clamping performance at 100 A IPPM, 7.0 V VWM compatibility with 5 V logic interfaces, unidirectional polarity, and 1.5KE package suitability for high-reliability board-level surge suppression.
Technical Context
The LCE7.0A-E3/73 employs a glass-passivated silicon junction optimized for fast response (<1 ns) to transient events such as ESD, inductive switching spikes, and lightning-induced surges. Its low incremental surge resistance ensures stable clamping behavior under repetitive 10/1000 μs pulses at 0.01% duty cycle.
Designed for unidirectional operation, it blocks up to 7.0 V DC in reverse bias while conducting transients above its 7.78 V minimum breakdown threshold. The device meets UL 497B listing for telecom applications and complies with JESD22-B106 (275 °C solder dip, 10 s) and JESD201 Class 1A whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before conduction begins; matches 5 V rail interfaces with margin. |
| VBR (min/max) | 7.78 V / 8.6 V at 10 mA - Confirmed breakdown range ensures reliable turn-on without premature leakage. |
| VC @ IPPM | 12.0 V at 100 A - Clamping voltage limits downstream IC stress during 1500 W surge events. |
| PPPM | 1500 W (10/1000 μs) - Peak surge power handling capability validated per Fig. 1 in datasheet 88357. |
| Junction Temp Range | –65 °C to +175 °C - Enables deployment in under-hood automotive or industrial motor control environments. |
| Capacitance | 100 pF at 0 V - Low capacitance preserves signal integrity on data lines up to ~10 MHz. |
| Package | 1.5KE - Industry-standard axial-leaded package with 0.375" lead length and UL 94 V-0 molded epoxy body. |
Pinout & Package
Package: 1.5KE axial-leaded case per Vishay outline drawing - molded epoxy body, matte tin-plated leads, color band indicating cathode end, RoHS-compliant (E3 suffix), UL 94 V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to protected line ground or low-side reference; conducts transient energy to common return. |
| Cathode | Reverse-biased blocking terminal | Marked by color band; connected to protected signal line or supply rail; blocks 7.0 V DC but clamps surges above VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable breakdown characteristics and long-term reliability under thermal cycling. |
| 1500 W peak pulse power (10/1000 μs) | Withstands high-energy transients typical of industrial relay switching and motor drive noise. |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes overvoltage exposure to downstream ICs compared to higher-ratio TVS devices. |
| UL 497B listed | Validated for telecom line protection applications without additional system-level certification burden. |
| JESD201 Class 1A whisker resistance | Prevents tin whisker growth in high-reliability, long-life deployments such as base station equipment. |
Applications
| Industrial Sensor Interface Protection | Automotive Body Control Module (BCM) Signal Lines |
|---|---|
Use Scenario: Protecting analog output lines (e.g., 4–20 mA current loops) from load dump and inductive kick in factory floor sensors. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to clamp transients before they reach ADC input or op-amp buffer. Use Value: 12.0 V clamping voltage ensures connected 3.3 V or 5 V signal conditioning ICs remain within absolute maximum ratings during 100 A surge events. |
Use Scenario: Shielding LIN bus or PWM-controlled actuator feedback lines from battery voltage transients in vehicle door modules. IC Role / Device Role / Timing Role: Standoff-rated TVS on bidirectional signal paths where reverse conduction is not required; cathode tied to signal, anode to chassis ground. Use Value: 7.0 V VWM allows safe operation across 5 V nominal supply rails while rejecting >7.78 V spikes without leakage-induced offset error. |
| Telecom Line Card Surge Suppression | Consumer Appliance Motor Drive Feedback Protection |
Use Scenario: Secondary protection on POTS or DSL line interface circuits compliant with UL 497B requirements. IC Role / Device Role / Timing Role: Final-stage TVS after primary gas discharge tube (GDT), absorbing residual energy and limiting let-through voltage. Use Value: UL listing eliminates need for additional system-level safety retesting; 100 pF capacitance avoids signal distortion on voice-band channels. |
Use Scenario: Safeguarding hall-effect rotor position sensor outputs in washing machine motor inverters exposed to MOSFET switching noise. IC Role / Device Role / Timing Role: Point-of-use TVS mounted directly at sensor connector to prevent ESD coupling into microcontroller GPIO pins. Use Value: 175 °C max junction temperature supports placement near heat-generating power stages without 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 |
|---|---|---|---|
| SMBJ7.0A | DO-214AA package (SMB), 7.0 V VWM, 12.5 V VC @ 82 A, 600 W PPPM | Lower power rating and surface-mount format; suited for space-constrained PCBs but less robust for 1500 W events. | Select SMBJ7.0A only when board area is critical and surge threat level is ≤600 W; LCE7.0A-E3/73 remains preferred for high-energy industrial environments. |
| 1.5KE7.0A | Identical electrical specs and 1.5KE package; differs only in branding and traceability - Vishay LCE series uses enhanced process control per doc 88357. | No functional difference; both meet UL 497B and JESD201 Class 1A. | 1.5KE7.0A is functionally interchangeable but lacks the LCE series' documented low-leakage optimization at elevated temperatures. |
Compared with SMBJ7.0A and 1.5KE7.0A, the LCE7.0A-E3/73 delivers identical VWM and superior 1500 W surge capacity in the same 1.5KE form factor, with verified low leakage stability up to 125 °C - making it optimal for thermally demanding industrial designs requiring long-term reliability.
Availability
LCE7.0A-E3/73 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive BCM signal protection, and telecom line card surge suppression requiring stable component supply and full traceability.
Supply support for LCE7.0A-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, and protection devices with emphasis on reliability, power handling, and industry certifications.
The LCE7.0A-E3/73 belongs to Vishay's low-capacitance TRANSZORB® TVS family, engineered specifically for high-fidelity signal line protection where low clamping voltage, fast response, and UL-listed compliance are mandatory.
FAQ
What is the maximum clamping voltage of the LCE7.0A-E3/73 at its rated peak pulse current?
The LCE7.0A-E3/73 has a maximum clamping voltage (VC) of 12.0 V at 100 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per Figure 3 in Vishay document 88357 and defines the upper voltage limit imposed on protected circuitry during a full-rated surge event. Maintaining VC at 12.0 V ensures compatibility with 3.3 V and 5 V logic interfaces downstream of the LCE7.0A-E3/73.
Is the LCE7.0A-E3/73 suitable for bidirectional transient protection?
No, the LCE7.0A-E3/73 is a unidirectional TVS diode and must be used with polarity aligned correctly - cathode to the protected line, anode to ground. For AC or bidirectional signal lines, two LCE7.0A-E3/73 devices must be connected in series opposition, as shown in Figure 4 of datasheet 88357. Using a single LCE7.0A-E3/73 on AC signals risks forward conduction and failure during negative half-cycles.
What is the meaning of the "E3/73" suffix in LCE7.0A-E3/73?
The "E3" suffix indicates RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 and JESD22-B102 solderability standards, plus JESD201 Class 1A whisker resistance. The "/73" denotes tape-and-reel packaging in 73 mm carrier tape width, standard for 1.5KE axial devices - distinct from /54 (54 mm tape) used in other variants of the LCE series.
Does the LCE7.0A-E3/73 require heatsinking for continuous power dissipation?
The LCE7.0A-E3/73 has a steady-state power dissipation (PD) rating of 6.5 W on an infinite heatsink at TL = 75 °C, but it is intended for transient-only operation. Under normal use, no heatsink is required because energy absorption occurs in short pulses (≤1 ms). Continuous DC power dissipation is not a design use case; sustained reverse bias above VWM will cause thermal runaway. The LCE7.0A-E3/73 functions solely as a clamping device during surges, not as a voltage regulator.
How does the LCE7.0A-E3/73 compare to standard 1.5KE7.0A in terms of reliability?
The LCE7.0A-E3/73 uses Vishay's enhanced low-leakage process and tighter parametric screening versus generic 1.5KE7.0A parts, resulting in lower reverse leakage (ID) at elevated temperatures and improved consistency in VBR distribution. Both share identical package, ratings, and UL listing, but the LCE7.0A-E3/73 is characterized for extended life in high-temperature industrial environments - a distinction confirmed in revision 24-Sep-12 of document 88357.
LCE7.0A-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:
- 12V
- 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
LCE7.0A-E3/73 FAQ
1.How can I place an order for LCE7.0A-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for LCE7.0A-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 LCE7.0A-E3/73 reliable?
The price and inventory of LCE7.0A-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 LCE7.0A-E3/73 is usually 5 days.
3.What payment methods are accepted for LCE7.0A-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LCE7.0A-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LCE7.0A-E3/73?
LCE7.0A-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LCE7.0A-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 LCE7.0A-E3/73?
For technical support, including LCE7.0A-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LCE7.0A-E3/73 requirements.
6.How does Aetrix verify that LCE7.0A-E3/73 is sourced from the original manufacturer or authorized distributors?
All LCE7.0A-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 LCE7.0A-E3/73 meets industry standards.
7.What is the process for return or replacement of LCE7.0A-E3/73?
All LCE7.0A-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with LCE7.0A-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 LCE7.0A-E3/73 part is unused and in its original packaging.
Return procedure for LCE7.0A-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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