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Vishay General Semiconductor - Diodes Division 1.5KE110-E3/73
- Part No.:
- 1.5KE110-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE110-E3/73.pdf
- Description:
- TVS DIODE 89.2VWM 158VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,321
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Product details
Overview
1.5KE110-E3/73 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), 1500 W peak pulse power (10/1000 µs), 9.9 A peak pulse current (IPPM), and clamps to ≤152 V at rated surge. It protects MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching spikes in industrial and automotive power supplies.
For engineers reviewing the 1.5KE110-E3/73 datasheet, 1.5KE110-E3/73 pinout, 1.5KE110-E3/73 application, or 1.5KE110-E3/73 equivalent, this part delivers verified 1500 W surge handling with sub-nanosecond response, low incremental clamping voltage (ΔVC = 47 V), and RoHS-compliant matte tin-plated leads - critical for high-reliability board-level ESD and surge protection design.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for fast clamping (<1 ns response) and low dynamic impedance under 10/1000 µs surge conditions. Its thermal resistance (RθJL = 15.4 °C/W) enables effective heat transfer to PCB copper, supporting sustained operation up to TJ = 175 °C.
The device operates with a 1.0 mA test current (IT) for VBR measurement and exhibits 1.0 µA max reverse leakage at VWM. Its forward voltage is 3.5 V at 100 A (per spec note for devices ≤1.5KE220A), confirming robust surge conduction capability without latch-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 105 V / 116 V at 1.0 mA - defines precise clamping onset threshold for reliable overvoltage detection |
| VWM | 94.0 V - maximum continuous working voltage before leakage exceeds 1.0 µA, ensuring no false triggering |
| IPPM | 9.9 A at 10/1000 µs - peak surge current it safely shunts without degradation |
| VC | ≤152 V at IPPM - clamped voltage seen by protected circuit, limiting stress on downstream components |
| PPPM | 1500 W - peak transient power dissipation capacity, enabling protection against severe lightning surges |
| TJ max | +175 °C - maximum junction temperature, supporting operation in under-hood automotive and industrial environments |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance, allowing efficient heat transfer to PCB traces or heatsinks |
Pinout & Package
Package: DO-201AD (Case Style 1.5KE), axial-leaded molded epoxy body with matte tin-plated leads. Dimensions: 5.3 mm diameter × 9.5 mm length (0.210" × 0.375"), UL 94 V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or lower-potential rail in unidirectional configuration; enables low-VF (3.5 V @ 100 A) path during surge |
| Cathode | Current exit point; marked with color band | Connected to protected line (e.g., 48 V supply rail); reverse-biased during normal operation, avalanches at VBR during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5%) and long-term reliability under thermal cycling and humidity |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly laid out with low-inductance grounding |
| Sub-nanosecond response time | Clamps transients before sensitive ICs experience damaging overvoltage - critical for protecting microcontrollers and analog front-ends |
| RoHS-compliant, JESD 201 Class 1A whisker-tested leads | Enables lead-free reflow assembly and eliminates tin whisker risk in high-reliability industrial and automotive applications |
| 175 °C max junction temperature | Permits use in engine control units, power converters, and outdoor telecom equipment without derating at ambient up to +125 °C |
Applications
| Industrial Motor Drives | Automotive Power Distribution |
|---|---|
Use Scenario: Protection of gate drivers and MCU power rails against back-EMF spikes from brushed DC motors and solenoids. IC Role / Device Role: Unidirectional TVS placed between 12 V/24 V supply and ground, clamping inductive kickback to ≤152 V. Use Value: Prevents latch-up and permanent damage to 3.3 V/5 V logic supplies and isolated gate drivers during motor commutation. |
Use Scenario: Overvoltage suppression on battery feed lines in body control modules (BCM) exposed to load dump (ISO 7637-2 Pulse 5a). IC Role / Device Role: Primary clamp on 12 V main rail, absorbing up to 1500 W for 1 ms per ISO 7637-2 test waveform. Use Value: Maintains system uptime by preventing reset or brownout of CAN transceivers and LIN controllers during alternator regulation failure. |
| Telecom Power Supplies | Sensor Interface Protection |
Use Scenario: Input-stage surge protection for AC/DC adapters and PoE injectors subjected to lightning-induced surges on outdoor lines. IC Role / Device Role: First-line defense on secondary-side DC output (e.g., 48 V PSE), coordinated with upstream MOVs and GDTs. Use Value: Limits let-through voltage to <152 V, preserving downstream DC-DC converters and Ethernet PHYs rated for 36–57 V input. |
Use Scenario: Signal line protection for automotive pressure, temperature, and position sensors connected to 5 V analog inputs. IC Role / Device Role: Low-capacitance unidirectional TVS on sensor VSENSE and GND pins, placed adjacent to connector. Use Value: Clamps ESD (IEC 61000-4-2 ±8 kV contact) and cable discharge events without distorting mV-level sensor signals due to minimal leakage (<1 µA at 94 V). |
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-E3/52 | DO-214AA package (smaller footprint), 110 V VBR, 1000 W PPPM, higher RθJA (110 °C/W) | Better suited for space-constrained PCBs but requires tighter thermal layout; lower surge rating limits use in high-energy lightning tests | Select when board area is constrained and surge energy is ≤1000 W; verify thermal relief via copper pour and trace width |
| 1.5KE110AHE3_B | Same 1.5KE package, identical electrical specs, but AEC-Q101 qualified and JESD 201 Class 2 whisker tested | Approved for automotive under-hood applications requiring qualification evidence; same pinout and layout | Choose for automotive OEM designs requiring AEC-Q101 documentation; otherwise 1.5KE110-E3/73 suffices for industrial/commercial use |
Compared with SMBJ110A-E3/52, 1.5KE110-E3/73 offers 50% higher surge power and superior thermal performance; compared with 1.5KE110AHE3_B, it lacks AEC-Q101 certification but provides identical protection performance at lower cost for non-automotive applications.
Availability
1.5KE110-E3/73 is available at Aetrix Electronics and suitable for industrial motor drives, automotive power distribution systems, and telecom power supplies requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for 1.5KE110-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, precision, and high-power handling.
The 1.5KE series was engineered for robust board-level transient suppression in harsh environments - targeting industrial automation, automotive subsystems, and infrastructure power systems where 1500 W surge immunity and 175 °C operation are mandatory.
FAQ
What is the breakdown voltage range for the 1.5KE110-E3/73?
The 1.5KE110-E3/73 has a guaranteed breakdown voltage (VBR) range of 105 V to 116 V measured at 1.0 mA test current. This tight tolerance ensures consistent clamping behavior across production lots and supports predictable overvoltage protection design without margin over-engineering.
Does the 1.5KE110-E3/73 meet automotive qualification standards?
No, the 1.5KE110-E3/73 is commercial-grade and RoHS-compliant but not AEC-Q101 qualified. For automotive applications requiring formal qualification, the functionally identical 1.5KE110AHE3_B variant is available and certified to AEC-Q101 with full test reports and traceability.
What is the maximum clamping voltage of the 1.5KE110-E3/73 under surge conditions?
The 1.5KE110-E3/73 clamps to a maximum of 152 V when subjected to its rated 9.9 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This clamping voltage directly determines the peak stress imposed on protected downstream components.
Can the 1.5KE110-E3/73 be used in bidirectional configurations?
No, the 1.5KE110-E3/73 is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional variants require the "CA" suffix (e.g., 1.5KE110CA); the 1.5KE110-E3/73 must be oriented with cathode toward the protected line and anode to ground.
What is the thermal resistance from junction to lead for the 1.5KE110-E3/73?
The 1.5KE110-E3/73 has a typical junction-to-lead thermal resistance (RθJL) of 15.4 °C/W. This value enables effective heat dissipation into PCB copper or chassis mounts, supporting continuous operation at elevated ambient temperatures when adequate copper area is provided.
1.5KE110-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):
- 89.2V
- Voltage - Breakdown (Min):
- 99V
- Voltage - Clamping (Max) @ Ipp:
- 158V
- Current - Peak Pulse (10/1000µs):
- 9.5A
- 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
1.5KE110-E3/73 FAQ
1.How can I place an order for 1.5KE110-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE110-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 1.5KE110-E3/73 reliable?
The price and inventory of 1.5KE110-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 1.5KE110-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE110-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE110-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE110-E3/73?
1.5KE110-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE110-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 1.5KE110-E3/73?
For technical support, including 1.5KE110-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE110-E3/73 requirements.
6.How does Aetrix verify that 1.5KE110-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE110-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 1.5KE110-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE110-E3/73?
All 1.5KE110-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE110-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 1.5KE110-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE110-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE110-E3/73 Tags
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