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Vishay General Semiconductor - Diodes Division 1.5KE110CA-E3/51
- Part No.:
- 1.5KE110CA-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE110CA-E3/51.pdf
- Description:
- TVS DIODE 94VWM 152VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,313
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Product details
Overview
1.5KE110CA-E3/51 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 110 V breakdown voltage (VBR = 105–116 V), 1500 W peak pulse power (10/1000 µs), clamping voltage of 152 V at 9.9 A, 1.0 mA test current, and operates across –55 °C to +175 °C junction temperature. It protects MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching spikes.
For engineers reviewing the 1.5KE110CA-E3/51 datasheet, 1.5KE110CA-E3/51 pinout, 1.5KE110CA-E3/51 application, or 1.5KE110CA-E3/51 equivalent, this device serves as a robust, glass-passivated, RoHS-compliant TVS for automotive-grade and industrial power rail protection where fast response (<1 ns), low clamping ratio, and AEC-Q101-qualified variants are critical selection criteria.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical electrical characteristics in forward and reverse directions. Its silicon avalanche junction delivers sub-nanosecond response time and clamps transient voltages before sensitive downstream components experience overstress.
The device uses a molded epoxy case (Case Style 1.5KE) with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102, rated for 275 °C solder dip (10 s), and meets UL 94 V-0 flammability. Thermal resistance is 15.4 °C/W (junction-to-lead) and 75 °C/W (junction-to-ambient).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 105 V / 116 V at 1.0 mA - defines reliable avalanche initiation threshold under surge conditions |
| VWM | 94.0 V - maximum continuous working voltage before leakage rises above 1.0 μA |
| VC @ IPPM | 152 V at 9.9 A - clamped voltage during full 1500 W transient, limiting stress on protected circuitry |
| PPPM | 1500 W (10/1000 µs waveform) - peak surge energy handling capacity per industry-standard pulse |
| TJ range | –55 °C to +175 °C - enables operation in under-hood automotive and industrial environments |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package, 0.375" lead length, 1.0" body length |
| RoHS & Qualification | E3 suffix: RoHS-compliant, JESD 201 Class 1A whisker tested - suitable for commercial and industrial assembly |
Pinout & Package
1.5KE110CA-E3/51 uses an axial-leaded DO-201AD package (Case Style 1.5KE) with no polarity marking - consistent with bidirectional construction. Leads are matte tin-plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; no cathode band - enables placement without orientation check |
| Lead 1 / Lead 2 | Connection interface | Leads serve as mechanical and thermal interface; RθJL = 15.4 °C/W supports PCB copper pour heat sinking |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| 1500 W peak pulse power | Handles high-energy transients (e.g., ISO 7637-2 Pulse 5a) without degradation |
| Sub-nanosecond response time | Clamps within 1 ns - faster than MOVs or polymer-based protectors, preserving signal integrity |
| Bidirectional symmetry | Equal VBR, VC, and IPPM in both directions - ideal for AC lines and differential signal protection |
| UL 94 V-0 molding compound | Prevents flame propagation in fault conditions - required for industrial and automotive enclosures |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V vehicle power distribution networks from load dump and alternator transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of DC-DC converters and microcontrollers. Use Value: Limits voltage to ≤152 V during 1500 W surges, preventing latch-up or gate oxide rupture in downstream SiC MOSFET drivers. | Use Scenario: Safeguarding analog inputs of PLC I/O modules connected to field sensors exposed to EMI and cable coupling. IC Role / Device Role / Timing Role: Bidirectional shunt protector on ±10 V sensor excitation lines and differential RS-485 bus pairs. Use Value: Symmetric clamping ensures equal protection against positive and negative transients induced by nearby motor drives. |
| Telecom Line Surge Protection | Consumer Appliance Motor Control |
Use Scenario: Front-end protection for DSL or PoE-powered Ethernet ports subjected to lightning-induced surges on twisted-pair cables. IC Role / Device Role / Timing Role: First-stage TVS in multi-tiered protection scheme, absorbing bulk energy before GDT or polymer suppressors. Use Value: 152 V clamping voltage aligns with IEEE C62.41 Category B/C limits, enabling compliance with IEC 61000-4-5 Level 4 (4 kV) | Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Across-motor terminals to quench flyback voltage spikes during PWM commutation. Use Value: Fast response prevents voltage overshoot beyond 152 V, eliminating need for snubber RC networks and reducing BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110CA | Lower PPPM (600 W), smaller SMB package (surface-mount), higher VC (183 V @ 3.3 A) | Preferred for space-constrained PCBs; not suitable for 1500 W surge requirements | Select when board area is limited and surge energy is ≤600 W (e.g., secondary-side protection) |
| 1.5KE110A | Unidirectional version; same VBR/VC/PPPM, but marked cathode band and asymmetric conduction | Required only where DC bias or polarity-sensitive circuits demand unidirectional clamping | Choose only if system topology mandates cathode-referenced clamping (e.g., single-rail DC supply rails) |
Compared with SMBJ110CA and 1.5KE110A, the 1.5KE110CA-E3/51 uniquely delivers 1500 W bidirectional clamping in through-hole format with verified 175 °C operation - making it optimal for primary-side, high-reliability, and thermally demanding surge protection roles.
Availability
1.5KE110CA-E3/51 is available at Aetrix Electronics and suitable for automotive power systems, industrial PLC I/O modules, telecom line interfaces, and consumer appliance motor control requiring stable component supply and long-term manufacturability.
Supply support for 1.5KE110CA-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, TVS devices, and optoelectronics with emphasis on reliability, power handling, and automotive qualification.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure due to voltage surges must be eliminated.
FAQ
What is the breakdown voltage tolerance for 1.5KE110CA-E3/51?
The 1.5KE110CA-E3/51 has a specified breakdown voltage range of 105 V to 116 V at 1.0 mA test current. This ±5% tolerance ensures predictable clamping onset across production lots and temperature extremes, critical for designing robust overvoltage margins in 12 V and 24 V systems. The 1.5KE110CA-E3/51 maintains this specification under JEDEC-standard test conditions per datasheet document 88301.
Is 1.5KE110CA-E3/51 suitable for automotive applications?
Yes - while the standard 1.5KE110CA-E3/51 is commercial-grade, its base family (1.5KE6.8CAHE3_B to 1.5KE220CAHE3_B) is AEC-Q101 qualified. The 1.5KE110CA-E3/51 shares identical electrical and thermal characteristics, package, and construction, and is widely deployed in non-safety-critical automotive subsystems such as body control modules and infotainment power supplies. For certified AEC-Q101 use, specify the HE3 suffix variant.
What is the clamping voltage of 1.5KE110CA-E3/51 at its rated peak pulse current?
The 1.5KE110CA-E3/51 clamps to a maximum of 152 V at its rated peak pulse current of 9.9 A (10/1000 µs waveform). This value is measured per Figure 9 in the Vishay datasheet 88301 and reflects worst-case performance at TA = 25 °C. The clamping ratio (VC/VBR) is ~1.45, indicating efficient energy diversion with minimal voltage overshoot during surge events.
Does 1.5KE110CA-E3/51 have polarity markings?
No - the 1.5KE110CA-E3/51 is a bidirectional TVS diode and carries no cathode band or polarity marking. Its symmetrical construction allows installation in either orientation on the PCB, simplifying assembly and eliminating orientation-related failures. This distinguishes it from unidirectional variants like 1.5KE110A, which feature a visible cathode band.
What is the thermal resistance of 1.5KE110CA-E3/51, and how does it affect layout?
The 1.5KE110CA-E3/51 has a typical junction-to-lead thermal resistance (RθJL) of 15.4 °C/W and junction-to-ambient (RθJA) of 75 °C/W. To maximize surge endurance, PCB layout should use ≥0.5"² of 2 oz copper connected to both leads - leveraging the low RθJL for effective heat extraction during repetitive transients. The 1.5KE110CA-E3/51's axial leads are designed for direct thermal coupling to copper pours.
1.5KE110CA-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:
- -
- Bidirectional Channels:
- 1
- 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
1.5KE110CA-E3/51 FAQ
1.How can I place an order for 1.5KE110CA-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE110CA-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 1.5KE110CA-E3/51 reliable?
The price and inventory of 1.5KE110CA-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 1.5KE110CA-E3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE110CA-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE110CA-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE110CA-E3/51?
1.5KE110CA-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE110CA-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 1.5KE110CA-E3/51?
For technical support, including 1.5KE110CA-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE110CA-E3/51 requirements.
6.How does Aetrix verify that 1.5KE110CA-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE110CA-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 1.5KE110CA-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE110CA-E3/51?
All 1.5KE110CA-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE110CA-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 1.5KE110CA-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE110CA-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE110CA-E3/51 Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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