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Vishay General Semiconductor - Diodes Division 1.5KE16CA-E3/51
- Part No.:
- 1.5KE16CA-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE16CA-E3/51.pdf
- Description:
- TVS DIODE 13.6VWM 22.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,433
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Product details
Overview
1.5KE16CA-E3/51 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for clamping voltage transients on signal and power lines. It features a 16 V breakdown voltage (VBR = 15.2–16.8 V at 1.0 mA), 1500 W peak pulse power (10/1000 µs), and clamps to ≤22.5 V at 66.7 A, protecting MOSFETs and ICs in automotive sensor interfaces.
For engineers reviewing the 1.5KE16CA-E3/51 datasheet, 1.5KE16CA-E3/51 pinout, 1.5KE16CA-E3/51 application, or 1.5KE16CA-E3/51 equivalent, this device serves as a robust, AEC-Q101-qualified (HE3 variant) transient protector for bidirectional DC lines where fast response (<1 ns), low clamping voltage, and high surge current capability are critical.
Technical Context
This TVS diode operates in avalanche mode with glass-passivated junction construction, enabling stable bidirectional clamping across both polarities. Its 10/1000 µs waveform rating of 1500 W and 66.7 A peak pulse current (IPPM) reflect standardized surge handling per R.E.A. and ANSI/IEEE C62.35.
The device exhibits a maximum clamping voltage (VC) of 22.5 V at IPPM, with a temperature coefficient of VBR at +0.086 %/°C and operating junction temperature range from –55 °C to +175 °C - supporting under-hood automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 15.2 V / 16.8 V at 1.0 mA - defines reliable avalanche initiation threshold for bidirectional overvoltage protection |
| VWM | 13.6 V - maximum continuous working voltage before leakage exceeds 1.0 µA, setting safe DC bias margin |
| VC @ IPPM | ≤22.5 V at 66.7 A - clamping voltage during 10/1000 µs surge, limiting stress on downstream ICs |
| PPPM | 1500 W - peak pulse power dissipation capability, enabling protection against lightning-induced surges (IEC 61000-4-5 Level 3) |
| IPPM | 66.7 A - maximum non-repetitive surge current, validated for 4 pulses/minute duty cycle |
| Junction temp. range | –55 °C to +175 °C - supports operation in engine control units and industrial motor drives without derating |
| Package | DO-201AD (Case Style 1.5KE) - axial-leaded, UL 94 V-0 molded epoxy package with matte tin-plated leads |
Pinout & Package
1.5KE16CA-E3/51 uses a two-terminal DO-201AD axial package (Case Style 1.5KE) with no polarity marking - consistent with bidirectional function. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, rated for 275 °C/10 s solder dip.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional terminal pair | Identical electrical behavior in either direction; connected across protected line and ground or between differential lines |
| Leads (axial) | Mounting & thermal path | Provide mechanical attachment and conduct heat to PCB copper; RθJL = 15.4 °C/W enables effective power dissipation |
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 (10/1000 µs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive electronics |
| Clamping response time <1 ns | Protects sensitive CMOS inputs before damage occurs during ESD or switching transients |
| AEC-Q101 qualified option (HE3 suffix) | Validated for automotive applications including body control modules and sensor interfaces |
| UL 94 V-0 flammability rating | Mold compound prevents flame propagation in safety-critical enclosures |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching spikes in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across signal line and chassis ground, responding within nanoseconds to suppress transients exceeding VWM. Use Value: Limits voltage seen by the 1.5KE16CA-E3/51-protected transceiver to ≤22.5 V during 66.7 A surges, preventing latch-up or gate oxide rupture in 5 V/3.3 V interface ICs. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges and relay contact bounce. IC Role / Device Role / Timing Role: Standoff voltage (13.6 V) allows normal 24 V logic detection while clamping transients >16.8 V to protect optocoupler input stages. Use Value: Enables reliable operation in harsh factory environments where 1500 W surge events occur without requiring active circuitry or slow-acting fuses. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Shielding Ethernet PHY magnetics and PoE controller inputs from lightning-induced common-mode surges on outdoor cabling. IC Role / Device Role / Timing Role: Paired bidirectionally across differential pairs (e.g., TX+/TX–) to clamp mode-common transients while preserving signal integrity. Use Value: With VC ≤22.5 V and <1 ns response, 1.5KE16CA-E3/51 prevents damage to gigabit Ethernet PHYs rated for ≤25 V absolute maximum ratings. |
Use Scenario: Secondary-side overvoltage suppression on 12 V/19 V SMPS outputs in laptop adapters and USB-C PD chargers. IC Role / Device Role / Timing Role: Parallel-connected across output capacitor to absorb regulator failure or feedback loop faults before downstream devices exceed VDS(max). Use Value: Clamps faulted output to ≤22.5 V - below typical USB-C VBUS overvoltage lockout thresholds - avoiding catastrophic failure of connected devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16CA | DO-214AA package (SMB), lower PPPM = 600 W, same VBR range (15.2–16.8 V), higher IPPM = 32.9 A | Surface-mount footprint; suited for space-constrained PCBs but lower surge energy handling | Select SMBJ16CA when board area is limited and surge threat level is moderate (e.g., consumer USB ports) |
| 1.5SMC16CA | DO-214AB (SMC) package, PPPM = 1500 W, identical VBR/VC specs, but higher thermal resistance (RθJA ≈ 110 °C/W vs. 75 °C/W) | Surface-mount alternative with same power rating but reduced thermal performance in still-air conditions | Choose 1.5SMC16CA only with adequate copper pour and airflow; prefer 1.5KE16CA-E3/51 for through-hole reliability in high-temp enclosures |
Compared with SMBJ16CA and 1.5SMC16CA, the 1.5KE16CA-E3/51 delivers superior thermal management (RθJL = 15.4 °C/W) and proven axial-mount robustness for high-energy surge environments - making it preferred for automotive and industrial applications where mechanical stability and sustained power dissipation matter.
Availability
1.5KE16CA-E3/51 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter designs requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE16CA-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, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where 1500 W surge immunity and AEC-Q101 compliance are mandatory.
FAQ
What is the breakdown voltage tolerance of the 1.5KE16CA-E3/51?
The 1.5KE16CA-E3/51 has a specified breakdown voltage (VBR) range of 15.2 V to 16.8 V at 1.0 mA test current, representing ±5.6% tolerance around the nominal 16 V rating. This tight VBR window ensures predictable clamping onset and compatibility with 13.6 V maximum working voltage (VWM) requirements in 12 V systems. The 1.5KE16CA-E3/51 maintains this specification across its full operating temperature range.
Is the 1.5KE16CA-E3/51 RoHS compliant and lead-free?
Yes, the 1.5KE16CA-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 solderability standards and JESD 201 Class 1A whisker resistance requirements. The molded epoxy case is halogen-free and UL 94 V-0 rated - confirming environmental and safety compliance for global electronics manufacturing. The 1.5KE16CA-E3/51 contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE.
How does the 1.5KE16CA-E3/51 differ from unidirectional variants like 1.5KE16A-E3/51?
The 1.5KE16CA-E3/51 is bidirectional, meaning it clamps symmetrically for both positive and negative transients - ideal for AC lines, differential signals, or floating DC buses. In contrast, 1.5KE16A-E3/51 is unidirectional with a cathode band and only protects against reverse-polarity surges. The 1.5KE16CA-E3/51 has no polarity marking, identical VBR min/max in both directions, and is rated for VWM = 13.6 V (vs. 13.6 V for reverse only in the unidirectional version). Its bidirectional nature makes the 1.5KE16CA-E3/51 essential for balanced protection schemes.
What is the maximum clamping voltage of the 1.5KE16CA-E3/51 under surge conditions?
The 1.5KE16CA-E3/51 has a maximum clamping voltage (VC) of 22.5 V when subjected to its rated peak pulse current (IPPM) of 66.7 A using the standard 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and represents the highest voltage that will appear across the device during a worst-case surge event. Designers use this 22.5 V ceiling to verify that downstream components - such as 24 V-rated transceivers or 5 V microcontrollers - remain within their absolute maximum voltage ratings when protected by the 1.5KE16CA-E3/51.
Can the 1.5KE16CA-E3/51 be used in automotive applications?
Yes - the 1.5KE16CA-E3/51 is qualified to AEC-Q101 when ordered with the HE3 suffix (e.g., 1.5KE16CAHE3_B). While the base 1.5KE16CA-E3/51 is commercial-grade, its construction (glass-passivated junction, 175 °C max junction temperature, and robust DO-201AD package) meets core automotive reliability requirements. It is widely deployed in non-safety-critical automotive subsystems including HVAC controls, lighting modules, and sensor interfaces - provided system-level validation confirms suitability. For certified applications, specify the HE3 variant to ensure full AEC-Q101 documentation and lot traceability.
1.5KE16CA-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):
- 13.6V
- Voltage - Breakdown (Min):
- 15.2V
- Voltage - Clamping (Max) @ Ipp:
- 22.5V
- Current - Peak Pulse (10/1000µs):
- 66.7A
- 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
1.5KE16CA-E3/51 FAQ
1.How can I place an order for 1.5KE16CA-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE16CA-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 1.5KE16CA-E3/51 reliable?
The price and inventory of 1.5KE16CA-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 1.5KE16CA-E3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE16CA-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE16CA-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE16CA-E3/51?
1.5KE16CA-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE16CA-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 1.5KE16CA-E3/51?
For technical support, including 1.5KE16CA-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE16CA-E3/51 requirements.
6.How does Aetrix verify that 1.5KE16CA-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE16CA-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 1.5KE16CA-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE16CA-E3/51?
All 1.5KE16CA-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE16CA-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 1.5KE16CA-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE16CA-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE16CA-E3/51 Tags
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