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Vishay General Semiconductor - Diodes Division LCE6.5A-E3/54
- Part No.:
- LCE6.5A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
LCE6.5A-E3/54.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,999
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Product details
Overview
LCE6.5A-E3/54 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for primary-side overvoltage protection in DC power rails and signal lines. It features a 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR), 1500 W peak pulse power (10/1000 μs), 11.2 V clamping voltage at 100 A IPP, and operates from –65 °C to +175 °C. It is used to protect MOSFETs, ICs, and sensor interfaces against inductive switching transients.
For engineers reviewing the LCE6.5A-E3/54 datasheet, LCE6.5A-E3/54 pinout, LCE6.5A-E3/54 application, or LCE6.5A-E3/54 equivalent, key selection criteria include clamping performance at rated surge current, unidirectional polarity, RoHS-compliant matte tin leads, UL 497B listing for telecom, and compatibility with 1.5KE case thermal derating curves.
Technical Context
The LCE6.5A-E3/54 uses a glass-passivated silicon junction for stable breakdown behavior and low incremental surge resistance. Its 10/1000 μs waveform response delivers 100 A peak pulse current with 11.2 V clamping, enabling robust protection of 5 V–6.5 V logic and power stages without excessive voltage overshoot.
Designed for repetitive surge duty cycles up to 0.01 %, it supports high-reliability operation in industrial and telecom equipment where transient energy exceeds standard ESD limits. The device's 100 pF junction capacitance at 0 V ensures minimal signal distortion on low-speed control lines and DC supply inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse working voltage before conduction begins; sets upper limit for protected circuit DC bias. |
| VBR (min/max) | 7.22 V / 7.98 V - Breakdown occurs within this range at 10 mA test current; defines turn-on threshold tolerance. |
| VC @ IPP | 11.2 V at 100 A - Clamped voltage during 10/1000 μs surge; determines maximum stress imposed on downstream components. |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 μs waveform; enables protection against high-energy transients like inductive kick. |
| Junction Capacitance | 100 pF at 0 V - Low enough for <1 MHz signal integrity preservation; unsuitable for high-speed data lines. |
| TJ max. | +175 °C - Enables operation in under-hood automotive or high-ambient industrial environments without thermal shutdown. |
| Polarity | Unidirectional - Requires correct orientation relative to DC rail; cathode marked by color band. |
Pinout & Package
Package: 1.5KE molded epoxy case (Case Style 1.5KE), UL 94 V-0 rated, with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. Polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or lower-potential node; completes conduction path during transient clamp. |
| Cathode | High-side connection point | Connected to protected line (e.g., +5 V rail); color band identifies this terminal for correct PCB placement. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over temperature and lifetime; eliminates passivation-related leakage drift in harsh environments. |
| 1500 W peak pulse rating | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-ground) when properly mounted with low-inductance layout. |
| UL 497B listed | Validated for telecom interface protection including POTS, DSL, and T1/E1 line cards without additional certification effort. |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance; suitable for lead-free reflow and long-term reliability in commercial-grade applications. |
| Low incremental surge resistance | Minimizes VC rise under high di/dt conditions; improves clamping consistency across varying surge amplitudes. |
Applications
| Industrial Motor Drive Control | Telecom Line Interface Protection |
|---|---|
Use Scenario: Protecting gate drivers and microcontroller I/O pins from flyback voltage spikes generated by relay or solenoid coil de-energization. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 5 V supply rail and ground, triggered only during positive overvoltage events. Use Value: Limits transient voltage to ≤11.2 V, preventing latch-up or oxide damage in 5 V logic devices while surviving >1000 surges at rated energy. | Use Scenario: Shielding analog front-end circuits in DSL modems from lightning-induced surges on telephone line inputs. IC Role / Device Role / Timing Role: Primary-stage clamp on tip/ring differential pair, paired with opposite-polarity unit for AC line symmetry. Use Value: UL 497B certification confirms compliance with telecom surge safety standards; 100 pF capacitance avoids signal attenuation below 1 MHz. |
| Automotive Body Control Module | Consumer Appliance Power Supply |
Use Scenario: Safeguarding LIN bus transceivers and MCU reset lines against load dump and jump-start transients in 12 V systems. IC Role / Device Role / Timing Role: Standoff-rated TVS on 5 V regulated supply output, absorbing ISO 7637-2 Pulse 1 and Pulse 3a energy. Use Value: 175 °C max junction temperature allows placement near heat-generating power components without derating loss. | Use Scenario: Suppressing switching noise and capacitor discharge spikes on the 3.3 V or 5 V secondary side of SMPS in smart home hubs. IC Role / Device Role / Timing Role: Secondary-side rail protector located after bulk filtering but before LDO input, clamping fast-rising transients from nearby relays or fans. Use Value: 6.5 W steady-state power dissipation enables continuous operation under elevated ambient temperatures up to 75 °C on heatsink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5A | Same VWM (6.5 V) and PPPM (600 W), but lower peak power rating and SMB package (smaller thermal mass). | Lower surge energy handling; suited for space-constrained consumer designs with moderate transient exposure. | Select SMBJ6.5A only if board area is critical and surge threat level is limited to IEC 61000-4-4 Level 3. |
| 1.5KE6.8A | Higher VWM (6.8 V), same 1.5KE package, identical 1500 W rating, but slightly higher clamping (11.5 V at 100 A). | Marginally reduced sensitivity to normal operating voltage ripple; acceptable where 0.3 V higher standoff is tolerable. | Choose 1.5KE6.8A when tighter VWM tolerance is needed or when replacing legacy 1.5KE6.8A stock without redesign. |
Compared with SMBJ6.5A and 1.5KE6.8A, the LCE6.5A-E3/54 offers optimal balance of low clamping voltage (11.2 V), full 1500 W capability, and UL 497B validation-making it preferred for telecom and industrial DC rail protection where both energy handling and regulatory compliance are mandatory.
Availability
LCE6.5A-E3/54 is available at Aetrix Electronics and suitable for industrial motor drives, telecom line interfaces, automotive body control modules, and consumer appliance power supplies requiring stable component supply and long-lifecycle support.
Supply support for LCE6.5A-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, thermal performance, and industry-standard compliance.
The LCE6.5A-E3/54 belongs to Vishay's Low Capacitance TRANSZORB® family, engineered specifically for high-energy transient suppression in DC power and low-frequency signal paths where low clamping voltage and UL certification are critical.
FAQ
What is the maximum clamping voltage of the LCE6.5A-E3/54 during a 10/1000 µs surge?
The LCE6.5A-E3/54 clamps to a maximum of 11.2 V when subjected to a 100 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions per Figure 3 in the Vishay datasheet 88357 and represents the upper bound of voltage seen by protected circuitry during worst-case transient events. Designers must ensure downstream components tolerate this clamped level.
Is the LCE6.5A-E3/54 suitable for AC line protection applications?
The LCE6.5A-E3/54 is unidirectional and not rated for direct AC line use alone. Per Vishay Application Note on page 3, AC signal line protection requires two LCE6.5A-E3/54 units connected in parallel but opposite polarity. For standalone AC protection, bidirectional variants such as LCE6.5CA must be selected instead.
Does the LCE6.5A-E3/54 meet RoHS and lead-free assembly requirements?
Yes-the E3 suffix confirms the LCE6.5A-E3/54 is RoHS-compliant and qualified for lead-free reflow soldering per J-STD-002 and JESD 22-B102. It also passes JESD 201 Class 1A whisker testing, ensuring reliability in commercial-grade applications with matte tin-plated leads.
What is the thermal derating behavior of the LCE6.5A-E3/54 above 25 °C ambient?
The LCE6.5A-E3/54 follows the standard 1.5KE package derating curve: its 6.5 W power dissipation rating decreases linearly above TA = 25 °C, reaching zero at TL = 175 °C junction temperature. At 75 °C ambient with infinite heatsink, it maintains full 6.5 W; actual PCB layout and copper area will determine real-world thermal performance.
How does the LCE6.5A-E3/54 differ from the standard 1.5KE6.5A in terms of electrical performance?
The LCE6.5A-E3/54 shares the same 1.5KE package and core ratings as 1.5KE6.5A but is part of Vishay's Low Capacitance TRANSZORB® series, featuring tighter VBR tolerance (7.22–7.98 V vs. typical 7.22–8.33 V) and guaranteed 100 pF junction capacitance-optimized for applications where predictable clamping and minimal capacitive loading are essential.
LCE6.5A-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):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- 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
LCE6.5A-E3/54 FAQ
1.How can I place an order for LCE6.5A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for LCE6.5A-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 LCE6.5A-E3/54 reliable?
The price and inventory of LCE6.5A-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 LCE6.5A-E3/54 is usually 5 days.
3.What payment methods are accepted for LCE6.5A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LCE6.5A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LCE6.5A-E3/54?
LCE6.5A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LCE6.5A-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 LCE6.5A-E3/54?
For technical support, including LCE6.5A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LCE6.5A-E3/54 requirements.
6.How does Aetrix verify that LCE6.5A-E3/54 is sourced from the original manufacturer or authorized distributors?
All LCE6.5A-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 LCE6.5A-E3/54 meets industry standards.
7.What is the process for return or replacement of LCE6.5A-E3/54?
All LCE6.5A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with LCE6.5A-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 LCE6.5A-E3/54 part is unused and in its original packaging.
Return procedure for LCE6.5A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LCE6.5A-E3/54 Tags
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