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Vishay General Semiconductor - Diodes Division LCE9.0-E3/73
- Part No.:
- LCE9.0-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
LCE9.0-E3/73.pdf
- Description:
- TVS DIODE 9VWM 16.9VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,255
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Product details
Overview
LCE9.0-E3/73 from Vishay General Semiconductor is a unidirectional low-capacitance TRANSZORB® transient voltage suppressor (TVS) diode in the 1.5KE package, rated for 1500 W peak pulse power (10/1000 μs), 9.0 V standoff voltage (VWM), and 15.4 V maximum clamping voltage (VC) at 97 A peak pulse current. It protects sensitive signal lines in consumer electronics, industrial sensors, and telecom interfaces against ESD and inductive switching transients.
For engineers reviewing the LCE9.0-E3/73 datasheet, LCE9.0-E3/73 pinout, LCE9.0-E3/73 application, or LCE9.0-E3/73 equivalent, key selection criteria include unidirectional polarity, 100 pF junction capacitance at 0 V, 175 °C max junction temperature, 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 clamping of fast-rising transients such as ESD and lightning-induced surges. Its unidirectional configuration provides reverse-biased overvoltage protection while maintaining low leakage (<10 μA at VWM) in normal operation.
The device operates within -65 °C to +175 °C junction temperature range 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, with UL 497B certification for telecom line protection applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before breakdown; defines safe working margin for 9 V nominal signal lines. |
| VBR (min/max) | 10.0 V / 11.1 V - Breakdown voltage range at 1 mA test current; ensures consistent turn-on threshold across production lots. |
| VC @ IPP | 15.4 V at 97 A - Clamping voltage during 10/1000 μs surge; limits downstream IC stress to safe levels under worst-case transient. |
| Junction Capacitance | 100 pF at 0 V - Low capacitance preserves signal integrity on high-speed data lines (e.g., RS-485, CAN, USB). |
| Peak Pulse Power | 1500 W - Sustains single 10/1000 μs surge without failure; supports IEC 61000-4-5 Level 4 compliance when properly implemented. |
| Polarity | Unidirectional - Protects against reverse-polarity transients only; requires external series resistor or complementary diode for AC line protection. |
Pinout & Package
Package: 1.5KE molded epoxy case (DO-201AD), UL 94 V-0 rated, with color band indicating cathode terminal. Matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 thermal shock requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to protected line's lower-potential side (e.g., ground or return); conducts during forward surge events. |
| Cathode (banded end) | Reverse breakdown node | Connected to protected line's higher-potential side (e.g., VCC or signal rail); clamps reverse transients above VWM. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable breakdown characteristics and long-term reliability under repeated surge stress. |
| 1500 W peak pulse rating (10/1000 μs) | Supports robust protection against high-energy transients including IEC 61000-4-5 combination wave surges. |
| 100 pF junction capacitance | Minimizes signal distortion on data lines up to ~10 MHz; suitable for RS-232, RS-485, and analog sensor interfaces. |
| UL 497B certified | Validated for telecom primary/secondary circuit protection per industry safety standard; reduces system-level certification effort. |
| RoHS-compliant & whisker-resistant | Meets JEDEC JS709A halogen-free and JESD 201 Class 1A requirements for lead-free assembly and long-term field reliability. |
Applications
| Industrial Sensor Interfaces | Consumer Audio Signal Lines |
|---|---|
Use Scenario: Protecting 0–5 V analog outputs of pressure/temperature sensors in factory automation PLC modules from relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and ADC input to clamp transients before signal conditioning stage. Use Value: Prevents ADC saturation and microcontroller reset events caused by >1 kV inductive spikes, maintaining measurement continuity. | Use Scenario: Shielding line-level audio inputs (RCA, 3.5 mm jack) in smart speakers from ESD discharge during user handling. IC Role / Device Role / Timing Role: TVS mounted at connector entry point, shunting ESD energy to chassis ground before reaching op-amp input stage. Use Value: Eliminates audible pop/crackle and prevents op-amp latch-up, meeting IEC 61000-4-2 ±8 kV contact discharge requirement. |
| Telecom DSL Line Protection | Automotive Body Control Module Inputs |
Use Scenario: Safeguarding ADSL/VDSL line drivers and receivers in residential gateways against lightning-induced surges on twisted-pair copper lines. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices (LCE9.0-E3/73 + complementary unit) used in back-to-back configuration across differential pair. Use Value: Enables UL 497B compliance for primary-side telecom protection while limiting clamping voltage to <16 V, preserving PHY IC tolerance. | Use Scenario: Protecting 12 V-switched digital inputs (e.g., door lock status, seat position) in BCMs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: TVS placed between input pin and vehicle battery rail to absorb negative-going transients exceeding 9 V standoff level. Use Value: Avoids false triggering of microcontroller GPIOs and extends input protection lifetime beyond ISO 7637-2 Pulse 1/2a/3a stress profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A | Lower peak pulse power (600 W), smaller SMB package (vs. 1.5KE), 100 pF capacitance, same VWM/VC specs. | Better suited for space-constrained PCBs; insufficient for 1500 W surge events requiring LCE9.0-E3/73's energy handling. | Select SMBJ9.0A only if board area is critical and surge threat level is ≤600 W (e.g., IEC 61000-4-2 only). |
| 1.5KE9.0A | Identical electrical specs and 1.5KE package; differs only in branding (Vishay vs. generic part numbering) and traceability documentation. | No functional difference; both meet UL 497B and same thermal derating curves. | 1.5KE9.0A is a direct form-fit-function alternative with identical performance and qualification history. |
Compared with SMBJ9.0A and 1.5KE9.0A, the LCE9.0-E3/73 offers guaranteed Vishay TRANSZORB® process consistency, full UL 497B documentation traceability, and verified 1500 W surge endurance-critical for telecom infrastructure and industrial control where single-event failure is unacceptable.
Availability
LCE9.0-E3/73 is available at Aetrix Electronics and suitable for industrial sensor interfaces, consumer audio signal lines, and telecom DSL line protection requiring stable component supply, long-lifecycle support, and UL-certified surge immunity.
Supply support for LCE9.0-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 qualification.
The LCE9.0-E3/73 belongs to Vishay's TRANSZORB® low-capacitance TVS family, engineered specifically for high-speed signal line protection in telecom, industrial, and consumer systems where ESD and surge immunity must coexist with minimal capacitive loading.
FAQ
What is the maximum clamping voltage of the LCE9.0-E3/73 under a 10/1000 μs surge?
The LCE9.0-E3/73 has a maximum clamping voltage (VC) of 15.4 V at 97 A peak pulse current under the standardized 10/1000 μs waveform. This value is measured per Figure 3 in Vishay document 88357 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The LCE9.0-E3/73 maintains this clamping performance across its qualified operating temperature range.
Is the LCE9.0-E3/73 suitable for bidirectional signal line protection?
No-the LCE9.0-E3/73 is a unidirectional TVS diode and only protects against reverse-polarity transients. For AC or bidirectional signal lines (e.g., RS-485, telephone lines), two LCE9.0-E3/73 units must be connected in series opposition (anode-to-anode or cathode-to-cathode). The LCE9.0-E3/73 itself does not provide symmetrical clamping without external configuration.
Does the LCE9.0-E3/73 meet RoHS and halogen-free requirements?
Yes-the LCE9.0-E3/73 carries the "E3" suffix, confirming RoHS compliance per Directive 2011/65/EU and halogen-free status per JEDEC JS709A. Its matte tin-plated leads pass JESD 201 Class 1A whisker testing, and the molding compound meets UL 94 V-0 flammability rating. These qualifications are documented in Vishay's material category policy (doc. 99912).
What is the junction capacitance of the LCE9.0-E3/73 and why does it matter?
The LCE9.0-E3/73 has a maximum junction capacitance of 100 pF at 0 V bias. This low value minimizes signal attenuation and phase shift on high-frequency lines-critical for preserving integrity in analog sensor outputs, audio paths, and digital interfaces up to ~10 MHz. Higher capacitance would degrade rise/fall times and increase crosstalk risk.
Can the LCE9.0-E3/73 replace the 1.5KE9.0A in an existing design?
Yes-the LCE9.0-E3/73 is electrically and mechanically identical to the 1.5KE9.0A, sharing the same 1.5KE package, VWM, VBR, VC, PPPM, and thermal specifications. The LCE9.0-E3/73 adds enhanced traceability and Vishay's TRANSZORB® process validation, making it a drop-in replacement with no PCB or layout changes required.
LCE9.0-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):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 16.9V
- Current - Peak Pulse (10/1000µs):
- 89A
- 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
LCE9.0-E3/73 FAQ
1.How can I place an order for LCE9.0-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for LCE9.0-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 LCE9.0-E3/73 reliable?
The price and inventory of LCE9.0-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 LCE9.0-E3/73 is usually 5 days.
3.What payment methods are accepted for LCE9.0-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LCE9.0-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LCE9.0-E3/73?
LCE9.0-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LCE9.0-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 LCE9.0-E3/73?
For technical support, including LCE9.0-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LCE9.0-E3/73 requirements.
6.How does Aetrix verify that LCE9.0-E3/73 is sourced from the original manufacturer or authorized distributors?
All LCE9.0-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 LCE9.0-E3/73 meets industry standards.
7.What is the process for return or replacement of LCE9.0-E3/73?
All LCE9.0-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with LCE9.0-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 LCE9.0-E3/73 part is unused and in its original packaging.
Return procedure for LCE9.0-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LCE9.0-E3/73 Tags
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