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Vishay General Semiconductor - Diodes Division LCE8.5A-E3/73
- Part No.:
- LCE8.5A-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
LCE8.5A-E3/73.pdf
- Description:
- TVS DIODE 8.5VWM 14.4VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:6,808
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Product details
Overview
LCE8.5A-E3/73 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the 1.5KE package, rated for 1500 W peak pulse power (10/1000 µs), 8.5 V standoff voltage (VWM), and 14.4 V maximum clamping voltage (VC) at 50 A peak pulse current. It protects sensitive ICs and MOSFETs against inductive switching transients and ESD in industrial sensor signal lines.
For engineers reviewing the LCE8.5A-E3/73 datasheet, LCE8.5A-E3/73 pinout, LCE8.5A-E3/73 application, or LCE8.5A-E3/73 equivalent, key selection criteria include clamping performance at 50 A, unidirectional polarity, RoHS-compliant matte tin-plated leads, and UL 497B listing for telecom surge protection.
Technical Context
This TVS diode uses a glass-passivated chip junction to achieve fast response time (<1 ns) and low incremental surge resistance, enabling effective suppression of sub-microsecond transients. Its unidirectional configuration provides reverse-biased clamping only, with a 9.44–10.4 V breakdown voltage range at 1 mA test current.
The device operates across –65 °C to +175 °C junction temperature and is rated for repetitive 10/1000 µs pulses at 0.01 % duty cycle. It meets JESD 22-B106 solderability (275 °C, 10 s) and JESD 201 Class 1A whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.5 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 9.44 V / 10.4 V at 1 mA - Ensures reliable turn-on within defined tolerance band |
| VC @ IPP | 14.4 V at 50 A - Limits downstream voltage stress during 10/1000 µs surge |
| PPPM | 1500 W - Sustains high-energy transients without failure under standard waveform |
| Junction capacitance | 100 pF at 0 V - Low enough for signal integrity in <10 MHz analog/sensor lines |
| TJ max. | +175 °C - Supports operation in high-temperature industrial enclosures |
| Polarity | Unidirectional - Requires correct orientation for reverse-biased clamping only |
Pinout & Package
Package: Case Style 1.5KE - Molded epoxy body with color band denoting cathode; meets UL 94 V-0 flammability rating; 0.375" (9.5 mm) lead length; RoHS-compliant matte tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or signal return) in unidirectional clamp |
| Cathode (banded end) | Reverse-biased clamping terminal | Connected to protected line; conducts when line voltage exceeds VWM + margin |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance and long-term reliability under thermal cycling |
| 1500 W peak pulse power | Handles high-energy surges common in motor drive and relay coil snubbing |
| UL 497B listed | Validated for telecom interface protection per industry safety standard |
| Low 100 pF capacitance | Minimizes signal distortion on 1–5 MHz sensor or data lines |
| JESD 201 Class 1A whisker resistance | Prevents tin whisker growth in long-life industrial deployments |
Applications
| Industrial Sensor Signal Protection | DC Power Rail Clamping |
|---|---|
Use Scenario: Protecting 0–10 V analog output lines from inductive kickback in PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to clamp transients above 8.5 V. Use Value: Limits voltage excursion to ≤14.4 V at 50 A, preventing damage to ADC input stages and op-amps. | Use Scenario: Safeguarding 12 V DC input rails in embedded controllers exposed to load dump events. IC Role / Device Role / Timing Role: Standoff-rated TVS connected anode-to-rail, cathode-to-ground for reverse transient suppression. Use Value: Absorbs 1500 W surges without degradation, maintaining rail integrity during automotive-grade load dump tests. |
| Telecom Line Interface Protection | MOSFET Gate Driver Protection |
Use Scenario: Shielding RS-485 transceiver pins in outdoor base station equipment per UL 497B. IC Role / Device Role / Timing Role: Unidirectional TVS on receiver inputs, oriented to clamp negative-going surges only. Use Value: UL listing confirms compliance; 100 pF capacitance avoids degrading 10 Mbps signal rise times. | Use Scenario: Preventing gate oxide rupture in N-channel power MOSFETs driven by microcontrollers. IC Role / Device Role / Timing Role: TVS placed between gate and source to clamp Miller-induced voltage spikes. Use Value: 14.4 V clamping ensures gate-source voltage stays below 20 V absolute max rating during switching transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A | Lower VWM (8.0 V), same 1500 W rating, SMB package (smaller footprint) | Better suited for space-constrained PCBs; slightly earlier clamping onset | Select if board area is limited and 0.5 V lower VWM is acceptable for system margin |
| 1.5KE8.5A | Identical electrical specs and 1.5KE package; differs only in suffix coding (E3/73 vs. standard E3) | No functional difference; both meet same UL 497B and RoHS requirements | Choose LCE8.5A-E3/73 for tape-and-reel delivery (73 = 13" reel); 1.5KE8.5A may ship in bulk or alternate packaging |
Compared with SMBJ8.0A and 1.5KE8.5A, the LCE8.5A-E3/73 offers identical clamping performance and thermal robustness in the established 1.5KE form factor, with verified reel packaging for automated assembly and documented UL 497B compliance for telecom infrastructure designs.
Availability
LCE8.5A-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 and full traceability.
Supply support for LCE8.5A-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 and application-specific validation.
The LCE8.5A-E3/73 belongs to Vishay's Low Capacitance TRANSZORB® family, engineered for high-speed transient suppression in signal integrity–sensitive systems where low capacitance and precise clamping are critical.
FAQ
What is the clamping voltage of the LCE8.5A-E3/73 at its rated peak pulse current?
The LCE8.5A-E3/73 has a maximum clamping voltage (VC) of 14.4 V at 50 A peak pulse current (IPP) under the standard 10/1000 µs waveform. This value is measured per Figure 3 in the Vishay datasheet 88357 and defines the upper voltage limit imposed on protected circuitry during surge events. The LCE8.5A-E3/73 maintains this clamping performance across its specified operating temperature range.
Is the LCE8.5A-E3/73 suitable for bidirectional transient protection?
No, the LCE8.5A-E3/73 is a unidirectional TVS diode and provides clamping only for reverse-biased transients. For AC or bidirectional protection, two LCE8.5A-E3/73 devices must be used in series opposition, as shown in Figure 4 of the datasheet. Using a single LCE8.5A-E3/73 for bidirectional signals risks failure during positive-going surges beyond its forward voltage drop.
What does the "E3/73" suffix indicate in LCE8.5A-E3/73?
The "E3" denotes RoHS-compliant matte tin plating and JESD 201 Class 1A whisker resistance; "73" specifies packaging in 13-inch diameter paper tape and reel, with a base quantity of 1400 units. This distinguishes LCE8.5A-E3/73 from other variants like LCE8.5A-E3/54 (7-inch reel) and confirms compliance with commercial-grade environmental requirements.
Does the LCE8.5A-E3/73 meet UL safety standards?
Yes, the LCE8.5A-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, including central office and remote terminal equipment, and confirms construction and performance compliance with recognized safety requirements.
What is the maximum operating temperature for the LCE8.5A-E3/73 junction?
The LCE8.5A-E3/73 has a maximum junction temperature (TJ) rating of +175 °C, allowing reliable operation in high-temperature environments such as enclosed industrial drives or under-hood automotive control units. Derating applies above 25 °C ambient per the power derating curve in Figure 2 of datasheet 88357, and the LCE8.5A-E3/73 retains full 1500 W pulse capability at TJ ≤ 25 °C.
LCE8.5A-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):
- 8.5V
- Voltage - Breakdown (Min):
- 9.44V
- Voltage - Clamping (Max) @ Ipp:
- 14.4V
- 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
LCE8.5A-E3/73 FAQ
1.How can I place an order for LCE8.5A-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for LCE8.5A-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 LCE8.5A-E3/73 reliable?
The price and inventory of LCE8.5A-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 LCE8.5A-E3/73 is usually 5 days.
3.What payment methods are accepted for LCE8.5A-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LCE8.5A-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LCE8.5A-E3/73?
LCE8.5A-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LCE8.5A-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 LCE8.5A-E3/73?
For technical support, including LCE8.5A-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LCE8.5A-E3/73 requirements.
6.How does Aetrix verify that LCE8.5A-E3/73 is sourced from the original manufacturer or authorized distributors?
All LCE8.5A-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 LCE8.5A-E3/73 meets industry standards.
7.What is the process for return or replacement of LCE8.5A-E3/73?
All LCE8.5A-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with LCE8.5A-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 LCE8.5A-E3/73 part is unused and in its original packaging.
Return procedure for LCE8.5A-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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