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Vishay General Semiconductor - Diodes Division LCE9.0A-E3/73
- Part No.:
- LCE9.0A-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
LCE9.0A-E3/73.pdf
- Description:
- TVS DIODE 9VWM 15.4VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:9,850
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Product details
Overview
LCE9.0A-E3/73 from Vishay General Semiconductor is a unidirectional low-capacitance TRANSZORB® transient voltage suppressor (TVS) diode designed for primary-side overvoltage clamping in signal and power lines. It features a 9.0 V stand-off voltage (VWM), 10.0–11.1 V breakdown voltage (VBR), 1500 W peak pulse power (10/1000 µs), 15.4 V maximum clamping voltage at 97 A IPP, and operates across -65 °C to +175 °C junction temperature. It is used to protect MOSFET gates, sensor I/O lines, and telecom interface circuits against ESD and inductive switching transients.
For engineers reviewing the LCE9.0A-E3/73 datasheet, LCE9.0A-E3/73 pinout, LCE9.0A-E3/73 application, or LCE9.0A-E3/73 equivalent, key selection criteria include verified clamping performance at 97 A surge current, unidirectional polarity with cathode band marking, UL 497B listing for telecom protection, RoHS-compliant matte tin leads, and compatibility with J-STD-002 solderability standards.
Technical Context
This TVS diode employs a glass-passivated silicon junction for stable avalanche behavior under repetitive 10/1000 µs transients at 0.01% duty cycle. Its low incremental surge resistance ensures minimal voltage overshoot during fast-rising surges, while the 1.5KE molded epoxy package provides mechanical robustness and UL 94 V-0 flammability compliance.
The device operates exclusively in unidirectional mode with a defined cathode (marked by color band), enabling precise placement in DC-biased protection paths. Clamping begins at VBR ≥10.0 V and limits to ≤15.4 V at rated IPP = 97 A, delivering predictable energy absorption without thermal runaway up to TJ = 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse working voltage before leakage exceeds 10 µA; sets upper limit for safe DC bias operation. |
| VBR (min/max) | 10.0 / 11.1 V - Measured at 1 mA IT; defines guaranteed avalanche onset range for reliable clamping initiation. |
| IPP @ VC | 97 A at 15.4 V - Peak surge current the device clamps to ≤15.4 V; determines minimum trace width and fuse coordination. |
| PPPM | 1500 W - Peak pulse power handling with 10/1000 µs waveform; validates suitability for IEC 61000-4-5 Level 4 surges. |
| Junction Capacitance | 100 pF at 0 V - Low capacitance preserves signal integrity on data lines up to ~10 MHz without distortion. |
| TJ max. | +175 °C - Enables use in high-ambient environments like industrial motor drives and outdoor telecom enclosures. |
| Polarity | Unidirectional - Requires correct orientation relative to DC bias; cathode marked with band for PCB assembly verification. |
Pinout & Package
Package: 1.5KE molded epoxy case (Case Style 1.5KE), DO-201AD outline, 0.375" (9.5 mm) lead length, UL 94 V-0 compliant, RoHS-compliant matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to circuit ground or lowest potential node; forms clamping path when cathode is biased above anode. |
| Cathode | High-side transient input terminal | Marked with color band; connects to protected line (e.g., RS-485 A/B, DC supply rail); conducts avalanche current to anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable avalanche characteristics over 1000+ surge events without parameter drift. |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 combination wave testing at 4 kV open-circuit / 2 kA short-circuit levels. |
| Low clamping ratio (VC/VBR ≈ 1.5) | Minimizes voltage overshoot during surge, reducing stress on downstream ICs such as microcontrollers and transceivers. |
| UL 497B listed | Validated for telecom primary-side protection including POTS, DSL, and T1/E1 interfaces per industry safety standard. |
| Solder dip rated 275 °C for 10 s | Withstands standard wave-soldering profiles without delamination or parameter shift. |
Applications
| Industrial Motor Drive Control | Telecom Line Interface Protection |
|---|---|
Use Scenario: Protecting gate drivers and feedback sensors in variable-frequency drives exposed to inductive kickback from IGBTs. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient spikes on 15 V auxiliary rails and isolated encoder signal lines. Use Value: Prevents latch-up or permanent damage to optocouplers and isolated amplifiers by limiting transients to ≤15.4 V at 97 A. | Use Scenario: Safeguarding RS-485 transceivers and line interface ICs in DSLAM and base station equipment. IC Role / Device Role / Timing Role: Primary-side surge suppression on twisted-pair telecom lines per UL 497B requirements. Use Value: Maintains signal fidelity with only 100 pF capacitance while absorbing 1500 W surges without degradation over 10⁴ cycles. |
| Automotive Body Control Module | Consumer Appliance Power Supply Input |
Use Scenario: Shielding LIN bus transceivers and microcontroller I/O pins from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Fast-response clamping element on 12 V supply inputs and sensor analog lines. Use Value: Responds in <1 ps to clamp 12 V system surges to safe levels before MCU reset or ADC saturation occurs. | Use Scenario: Protecting AC-DC converter controllers and optocoupler feedback paths in smart home appliances. IC Role / Device Role / Timing Role: Secondary-side transient suppressor on 5 V/3.3 V logic rails downstream of rectification. Use Value: Delivers 6.5 W steady-state power dissipation capability, enabling continuous operation in enclosed, thermally constrained enclosures. |
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 | Same VWM (9.0 V) and PPPM (600 W), but lower peak power rating and SMB package (smaller footprint, lower thermal mass). | Rated for 600 W only; suitable for lower-energy surges (IEC 61000-4-2 ESD, not full IEC 61000-4-5). | Select when board space is constrained and surge threat level is limited to ESD or low-energy transients. |
| 1.5KE9.0A | Identical electrical specs and 1.5KE package; differs only in packaging suffix (E3/73 vs. standard bulk/reel coding) and minor process revision. | No functional difference; fully interchangeable in design and layout. | Choose for direct drop-in replacement where legacy sourcing or distributor stock alignment is required. |
Compared with SMBJ9.0A, LCE9.0A-E3/73 delivers 2.5× higher surge energy handling for robust industrial protection; versus 1.5KE9.0A, it offers identical performance with enhanced RoHS compliance and whisker-tested leads for long-term reliability in automated assembly.
Availability
LCE9.0A-E3/73 is available at Aetrix Electronics and suitable for industrial motor control, telecom line interface, and automotive body electronics requiring stable component supply and UL-certified transient protection.
Supply support for LCE9.0A-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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and application-specific validation.
The LCE9.0A-E3/73 belongs to Vishay's low-capacitance TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in telecom, industrial, and automotive systems where clamping precision and long-term surge endurance are critical.
FAQ
What is the maximum clamping voltage of the LCE9.0A-E3/73 under rated surge conditions?
The LCE9.0A-E3/73 clamps to a maximum of 15.4 V when subjected to its rated peak pulse current of 97 A (10/1000 µs waveform). This value is measured per Figure 3 in the official Vishay datasheet 88357 and represents worst-case voltage seen by downstream components during surge events, ensuring safe operation for 3.3 V and 5 V logic interfaces.
Is the LCE9.0A-E3/73 suitable for bidirectional signal line protection?
No, the LCE9.0A-E3/73 is strictly unidirectional and must be used with polarity awareness. For AC or bidirectional signal lines (e.g., RS-485, USB), two LCE9.0A-E3/73 units must be placed in series opposition - one anode-to-anode, as shown in Vishay Application Note Fig. 4 - to achieve symmetrical clamping.
Does the LCE9.0A-E3/73 meet UL 497B certification for telecom applications?
Yes, the entire LCE6.5A–LCE28A series, including LCE9.0A-E3/73, is UL listed under file number E136766 for Telecom Application Protection per UL 497B. This certification covers primary-side surge protection in POTS, DSL, and T1/E1 infrastructure equipment.
What is the junction-to-ambient thermal resistance (RθJA) of the LCE9.0A-E3/73 in standard PCB mounting?
Vishay does not publish RθJA for the LCE9.0A-E3/73 in the 88357 datasheet. Thermal performance depends on PCB copper area, thickness, and airflow. The device is rated for 6.5 W power dissipation on an infinite heatsink at TL = 75 °C; for real-world layouts, users must validate temperature rise via thermal simulation or measurement per JEDEC JESD51 standards.
Can the LCE9.0A-E3/73 replace the 1.5KE9.0A in existing designs?
Yes, the LCE9.0A-E3/73 is functionally and physically identical to the 1.5KE9.0A, sharing the same 1.5KE package, electrical specifications, and thermal ratings. The E3/73 suffix indicates RoHS compliance and JESD201 Class 1A whisker testing - making it a recommended upgrade for new designs and drop-in replacement where enhanced reliability is required.
LCE9.0A-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):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 97A
- 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
LCE9.0A-E3/73 FAQ
1.How can I place an order for LCE9.0A-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for LCE9.0A-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 LCE9.0A-E3/73 reliable?
The price and inventory of LCE9.0A-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 LCE9.0A-E3/73 is usually 5 days.
3.What payment methods are accepted for LCE9.0A-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LCE9.0A-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LCE9.0A-E3/73?
LCE9.0A-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LCE9.0A-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 LCE9.0A-E3/73?
For technical support, including LCE9.0A-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LCE9.0A-E3/73 requirements.
6.How does Aetrix verify that LCE9.0A-E3/73 is sourced from the original manufacturer or authorized distributors?
All LCE9.0A-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 LCE9.0A-E3/73 meets industry standards.
7.What is the process for return or replacement of LCE9.0A-E3/73?
All LCE9.0A-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with LCE9.0A-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 LCE9.0A-E3/73 part is unused and in its original packaging.
Return procedure for LCE9.0A-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LCE9.0A-E3/73 Tags
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