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Vishay General Semiconductor - Diodes Division 1.5KE110A-E3/51
- Part No.:
- 1.5KE110A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE110A-E3/51.pdf
- Description:
- TVS DIODE 94VWM 152VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:7,415
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Product details
Overview
1.5KE110A-E3/51 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in power rails and signal lines. It features a 105 V to 116 V breakdown voltage (VBR), 94.0 V maximum standoff voltage (VWM), 152 V clamping voltage at 9.9 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and operates across –55 °C to +175 °C junction temperature range - used in automotive power supply input stages and industrial motor drive DC bus protection.
For engineers reviewing the 1.5KE110A-E3/51 datasheet, 1.5KE110A-E3/51 pinout, 1.5KE110A-E3/51 application, or 1.5KE110A-E3/51 equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, RoHS-compliant packaging details, and direct alternative part comparisons for ESD and lightning transient suppression design.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) and low incremental surge resistance. Its clamping action begins at 105 V (min VBR) and limits transients to ≤152 V at 9.9 A (10/1000 µs waveform), with 0.107 %/°C temperature coefficient of VBR.
It supports repetitive surge duty cycles up to 0.01 %, dissipates 6.5 W on infinite heatsink at TL = 75 °C, and withstands 200 A non-repetitive forward surge (8.3 ms half-sine). The device is rated for 175 °C max junction temperature and exhibits 75 °C/W junction-to-ambient thermal resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 105 V / 116 V - defines minimum voltage at which clamping initiates reliably under 1 mA test current |
| VWM | 94.0 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 152 V @ 9.9 A - clamped voltage during 10/1000 µs surge, determining protected circuit stress level |
| PPPM | 1500 W - peak transient power handling capability, critical for IEC 61000-4-5 Level 4 compliance |
| IFSM | 200 A - surge current rating for 8.3 ms half-sine, defining robustness against inductive switch-off events |
| TJ Range | –55 °C to +175 °C - enables deployment in under-hood automotive and industrial ambient environments |
| RθJA | 75 °C/W - thermal resistance limiting power dissipation in PCB-mounted, no-heatsink configurations |
Pinout & Package
Package: Axial-leaded DO-201AD (Case Style 1.5KE), epoxy-molded body with matte tin-plated leads; RoHS-compliant, commercial grade (E3 suffix); polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to lower-potential side (e.g., ground or return) in unidirectional clamp configuration |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., 24 V rail or CAN H); color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge immunity testing up to 4 kV open-circuit voltage |
| Clamping time <1 ns | Protects sensitive ICs (e.g., microcontrollers, gate drivers) before transient energy couples into logic |
| Low incremental surge resistance | Minimizes voltage overshoot during high-di/dt events such as relay coil de-energization |
| Solder dip rated 275 °C for 10 s | Compatible with standard wave soldering processes without parametric shift or bond degradation |
Applications
| Automotive Power Input Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: 12 V/24 V battery-fed ECUs exposed to load dump (ISO 16750-2) and jump-start surges. IC Role / Device Role / Timing Role: Primary shunt clamp placed upstream of DC-DC converter input to limit voltage to ≤152 V during 100 ms transients. Use Value: Prevents destruction of input MOSFETs and controller ICs by diverting >95 % of surge current away from downstream circuitry. | Use Scenario: 4–20 mA current loop inputs in programmable logic controllers subjected to field wiring ESD and induced lightning. IC Role / Device Role / Timing Role: Unidirectional TVS connected between signal line and ground, triggered only on positive overvoltage events. Use Value: Maintains analog accuracy by limiting leakage to ≤1 μA at 94 V while clamping 1 kV/0.5 J transients within 1 ns. |
| Telecom Line Card Surge Protection | Motor Drive DC Bus Snubbing |
Use Scenario: Low-voltage telecom interface cards (e.g., PoE-powered Ethernet ports) facing AC mains coupling and nearby lightning strikes. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), absorbing residual energy after GDT fires. Use Value: Provides precise clamping at 152 V to protect PHY transceivers rated for 16 V absolute max, avoiding latch-up or oxide rupture. | Use Scenario: DC link capacitors in 3-phase inverters experiencing regenerative braking spikes and IGBT turn-off overvoltages. IC Role / Device Role / Timing Role: Parallel-connected TVS across DC+ and DC− bus to clamp voltage excursions exceeding 110 V nominal rail. Use Value: Limits bus overvoltage to safe margin below IGBT VCE(max), reducing need for oversized snubber capacitors and lowering system cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110A | DO-214AA package, 600 W PPPM, 110 V VWM, 177 V VC @ 4.5 A | Lower power rating; suited for space-constrained PCBs where 1500 W is not required | Select when board area is limited and surge threat level is ≤IEC 61000-4-5 Level 3 |
| 1.5KE110CA | Bidirectional variant, same VBR/VC, symmetric clamping for AC-coupled or floating lines | Required for differential signal lines (e.g., RS-485, CAN) where polarity reversal occurs | Choose only if protecting bidirectional signals; not interchangeable with 1.5KE110A-E3/51 due to polarity mismatch |
Compared with SMBJ110A, the 1.5KE110A-E3/51 delivers 2.5× higher surge power handling and tighter clamping (152 V vs. 177 V), making it suitable for harsher environments; compared with 1.5KE110CA, it provides superior unidirectional clamping efficiency but cannot replace bidirectional protection without circuit redesign.
Availability
1.5KE110A-E3/51 is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom infrastructure requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5KE110A-E3/51 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 and ruggedized performance.
The 1.5KE series was engineered for high-energy transient suppression in demanding power electronics, targeting automotive, industrial, and telecom applications where failure modes must be mitigated without compromising signal integrity.
FAQ
What is the clamping voltage of the 1.5KE110A-E3/51 under a 10/1000 µs surge?
The 1.5KE110A-E3/51 clamps to a maximum of 152 V when subjected to its rated peak pulse current of 9.9 A using the standardized 10/1000 µs waveform. This value is measured per JEDEC test conditions and represents the upper bound of voltage seen by downstream components during surge events, ensuring compatibility with 120 V-rated circuits and providing margin below common MOSFET drain-source breakdown thresholds.
Is the 1.5KE110A-E3/51 RoHS compliant and lead-free?
Yes, the 1.5KE110A-E3/51 carries the "E3" suffix, indicating full RoHS compliance per EU Directive 2011/65/EU and exemption 7a. Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability standards, and it passes JESD 201 Class 1A whisker testing. No lead or other restricted substances exceed threshold limits defined in Annex II of the RoHS directive.
Can the 1.5KE110A-E3/51 be used in automotive applications?
Yes, the 1.5KE110A-E3/51 is qualified for automotive use per AEC-Q101 when ordered with the HE3 suffix (e.g., 1.5KE110AHE3_B). The base 1.5KE110A-E3/51 is commercial grade but widely deployed in non-safety-critical automotive subsystems such as body control modules and infotainment power supplies, provided thermal and surge requirements align with its 175 °C TJ max and 1500 W PPPM rating.
What is the standoff voltage (VWM) specification for the 1.5KE110A-E3/51?
The 1.5KE110A-E3/51 has a maximum working peak reverse voltage (VWM) of 94.0 V at 25 °C. This means the device remains in high-impedance state with leakage current ≤1 μA up to 94.0 V, allowing it to coexist with 90 V nominal systems (e.g., 24 V industrial rails with 300 % tolerance) without false triggering or power loss.
How does the thermal resistance of the 1.5KE110A-E3/51 affect its power handling?
The 1.5KE110A-E3/51 has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W. At ambient temperatures above 25 °C, its 6.5 W steady-state power dissipation must be derated linearly - for example, at 75 °C ambient, usable PD drops to ~3.25 W. This directly impacts sustained surge repetition rate and requires layout attention to copper area and airflow in high-duty-cycle applications.
1.5KE110A-E3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 94V
- Voltage - Breakdown (Min):
- 105V
- Voltage - Clamping (Max) @ Ipp:
- 152V
- Current - Peak Pulse (10/1000µs):
- 9.9A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE110A-E3/51 FAQ
1.How can I place an order for 1.5KE110A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE110A-E3/51 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 1.5KE110A-E3/51 reliable?
The price and inventory of 1.5KE110A-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE110A-E3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE110A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE110A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE110A-E3/51?
1.5KE110A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE110A-E3/51 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 1.5KE110A-E3/51?
For technical support, including 1.5KE110A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE110A-E3/51 requirements.
6.How does Aetrix verify that 1.5KE110A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE110A-E3/51 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 1.5KE110A-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE110A-E3/51?
All 1.5KE110A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE110A-E3/51, 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 1.5KE110A-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE110A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE110A-E3/51 Tags
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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