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Vishay General Semiconductor - Diodes Division LCE7.0A-E3/54
- Part No.:
- LCE7.0A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
LCE7.0A-E3/54.pdf
- Description:
- TVS DIODE 7VWM 12VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:5,791
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Product details
Overview
LCE7.0A-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 7.0 V standoff voltage (VWM), 7.78–8.6 V breakdown voltage (VBR), 1500 W peak pulse power (10/1000 μs), 12.0 V clamping voltage at 100 A, and operates across –65 °C to +175 °C junction temperature.
For engineers reviewing the LCE7.0A-E3/54 datasheet, LCE7.0A-E3/54 pinout, LCE7.0A-E3/54 application, or LCE7.0A-E3/54 equivalent, key selection criteria include clamping performance under 100 A surge, unidirectional polarity alignment in DC rail protection, thermal derating above 25 °C, and compatibility with J-STD-002 soldering standards for high-reliability industrial PCB assembly.
Technical Context
This TVS diode uses a glass-passivated chip junction for stable avalanche behavior and low incremental surge resistance. Its 1.5KE package supports high-energy transients via low-inductance leadframe construction and meets UL 94 V-0 flammability requirements.
The device delivers repeatable clamping at 12.0 V when subjected to 100 A (10/1000 μs), with <100 μA reverse leakage at 7.0 V and 1.0 mA test current defining its precise VBR window - critical for protecting MOSFET gates and IC power rails without false triggering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before conduction begins; sets safe margin below protected circuit's DC rail. |
| VBR (min/max) | 7.78 V / 8.6 V - Breakdown occurs within this band at 1.0 mA test current; ensures predictable turn-on timing during surges. |
| VC @ IPP | 12.0 V @ 100 A - Clamped voltage during full-rated 1500 W transient; limits stress on downstream components. |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 μs waveform; qualifies for lightning and inductive-switching surge immunity. |
| TJ max | +175 °C - Maximum junction temperature; enables operation in high-ambient environments like motor drives and power supplies. |
| Package | 1.5KE - Standard axial-leaded DO-201AD outline; compatible with automated insertion and wave-solder processes. |
Pinout & Package
Package: 1.5KE (DO-201AD), axial-leaded, epoxy-molded body with matte tin-plated leads. Polarity indicated by cathode band (banded end = cathode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Current entry point during forward bias; tied to ground or low-side reference in unidirectional configuration | Connects to system ground or return path; must be routed with low-inductance trace for effective clamping. |
| Cathode (banded end) | Current exit point during reverse avalanche; connected to protected line (e.g., +12 V rail) | Placed directly on the line being protected; clamps to anode potential when transient exceeds VWM. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, low-drift avalanche characteristics over lifetime and temperature cycling. |
| 1500 W peak pulse power (10/1000 μs) | Withstands high-energy transients from relay switching, ESD events, and load dump in automotive and industrial systems. |
| UL 94 V-0 molding compound | Provides flame-retardant housing essential for safety-critical applications including telecom and power supplies. |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance and J-STD-002 solderability standards for reliable long-term interconnects. |
Applications
| DC Power Rail Protection | MOSFET Gate Protection |
|---|---|
Use Scenario: Protecting +12 V supply lines in industrial PLCs against inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Unidirectional TVS placed between rail and ground to clamp positive transients only. Use Value: Limits voltage excursion to ≤12.0 V during 100 A surges, preventing latch-up or oxide damage in downstream regulators and microcontrollers. | Use Scenario: Shielding N-channel MOSFET gate-source terminals from ESD during handling and board-level operation. IC Role / Device Role / Timing Role: Low-capacitance TVS connected directly across gate and source pins. Use Value: Sub-100 pF junction capacitance avoids signal distortion while clamping gate voltage to safe levels (<12.0 V) during fast transients. |
| Sensor Signal Line Protection | Telecom Interface Protection |
Use Scenario: Safeguarding analog output lines of pressure sensors in automotive engine control units. IC Role / Device Role / Timing Role: Unidirectional suppression on 0–5 V sensor output, referenced to system ground. Use Value: Maintains signal integrity with <100 μA leakage at 7.0 V, ensuring minimal offset error in precision measurement circuits. | Use Scenario: UL 497B-compliant protection for telephone line interface circuits in VoIP gateways. IC Role / Device Role / Timing Role: Primary surge suppressor on tip/ring lines, certified per UL file E136766. Use Value: Meets telecom-specific surge immunity requirements with validated 1500 W pulse rating and thermal stability up to +175 °C. |
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 | Lower peak power (600 W), SMC package (surface-mount), 12.5 V clamping at 43.3 A | Better suited for space-constrained PCBs; not rated for 1500 W surges | Select when board area is limited and surge energy is ≤600 W. |
| 1.5KE7.0A | Identical electrical specs and 1.5KE package; same VWM, VBR, VC, PPPM; differs only in packaging suffix (E3/54 vs. standard bulk/reel) | No functional difference; identical performance and mounting | Use when RoHS compliance and JESD 201 whisker testing are required - LCE7.0A-E3/54 is the E3-grade variant. |
Compared with SMBJ7.0A and 1.5KE7.0A, the LCE7.0A-E3/54 provides guaranteed RoHS compliance, JESD 201 Class 1A whisker resistance, and UL 497B certification - making it preferred for telecom infrastructure and high-reliability industrial designs where long-term solder joint integrity and regulatory validation are mandatory.
Availability
LCE7.0A-E3/54 is available at Aetrix Electronics and suitable for DC power rail protection, MOSFET gate safeguarding, and telecom interface surge suppression requiring stable component supply, consistent RoHS compliance, and UL-certified transient immunity.
Supply support for LCE7.0A-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, and protection devices with emphasis on reliability, power handling, and industry certifications.
The LCE7.0A-E3/54 belongs to Vishay's Low Capacitance TRANSZORB® family, engineered specifically for high-energy transient suppression in demanding DC and telecom applications where clamping precision, thermal robustness, and safety certification are critical.
FAQ
What is the clamping voltage of the LCE7.0A-E3/54 under maximum rated surge current?
The LCE7.0A-E3/54 clamps to 12.0 V when subjected to its maximum peak pulse current of 100 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 circuits during worst-case transients. The LCE7.0A-E3/54 maintains this clamping performance consistently due to its glass-passivated junction and low incremental surge resistance.
Is the LCE7.0A-E3/54 suitable for bidirectional signal line protection?
No - the LCE7.0A-E3/54 is a unidirectional TVS diode, optimized for DC rail and single-polarity transient suppression. For AC or bidirectional signal lines (e.g., RS-485, USB), two LCE7.0A-E3/54 devices must be used in series opposition, as shown in Figure 4 of the Vishay datasheet. Using a single LCE7.0A-E3/54 on AC signals risks failure during negative half-cycles.
What does the "E3/54" suffix indicate in LCE7.0A-E3/54?
The "E3" denotes RoHS-compliant construction meeting JESD 201 Class 1A whisker resistance and J-STD-002 solderability standards. The "/54" specifies packaging in 13-inch diameter paper tape and reel, with 1400 units per reel. This format ensures compatibility with automated pick-and-place equipment and guarantees traceable, controlled moisture exposure per Vishay's ordering documentation.
How does the LCE7.0A-E3/54 compare to standard 1.5KE7.0A in terms of reliability?
The LCE7.0A-E3/54 shares identical electrical specifications and 1.5KE package with 1.5KE7.0A but adds E3-grade reliability enhancements: matte tin plating qualified to JESD 201 Class 1A (whisker resistance), tighter process controls for solderability, and UL 497B certification (file E136766). These make the LCE7.0A-E3/54 preferable for long-life industrial and telecom deployments where interconnect integrity is mission-critical.
What is the maximum operating temperature range for the LCE7.0A-E3/54?
The LCE7.0A-E3/54 has a specified operating junction and storage temperature range of –65 °C to +175 °C. This wide range supports deployment in harsh environments such as under-hood automotive electronics, industrial motor drives, and outdoor telecom cabinets. Derating of peak pulse power begins above 25 °C ambient, per the power derating curve in Figure 2 of the Vishay datasheet.
LCE7.0A-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):
- 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-E3/54 FAQ
1.How can I place an order for LCE7.0A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for LCE7.0A-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 LCE7.0A-E3/54 reliable?
The price and inventory of LCE7.0A-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 LCE7.0A-E3/54 is usually 5 days.
3.What payment methods are accepted for LCE7.0A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LCE7.0A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LCE7.0A-E3/54?
LCE7.0A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LCE7.0A-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 LCE7.0A-E3/54?
For technical support, including LCE7.0A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LCE7.0A-E3/54 requirements.
6.How does Aetrix verify that LCE7.0A-E3/54 is sourced from the original manufacturer or authorized distributors?
All LCE7.0A-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 LCE7.0A-E3/54 meets industry standards.
7.What is the process for return or replacement of LCE7.0A-E3/54?
All LCE7.0A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with LCE7.0A-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 LCE7.0A-E3/54 part is unused and in its original packaging.
Return procedure for LCE7.0A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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