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Vishay General Semiconductor - Diodes Division 1.5KE12CAHE3/51
- Part No.:
- 1.5KE12CAHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE12CAHE3/51.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,087
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Product details
Overview
1.5KE12CAHE3/51 from Vishay General Semiconductor is a bi-directional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in signal and power lines. It features a 12 V breakdown voltage (VBR = 11.4–12.6 V at 1 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 16.7 V at 89.8 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the 1.5KE12CAHE3/51 datasheet, 1.5KE12CAHE3/51 pinout, 1.5KE12CAHE3/51 application, or 1.5KE12CAHE3/51 equivalent, this device is selected for high-energy transient suppression in automotive sensor interfaces, industrial I/O ports, and telecom line protection where fast response (<1 ns), low clamping ratio, and stable bi-directional clamping are critical.
Technical Context
The 1.5KE12CAHE3/51 operates as a bi-directional avalanche diode with symmetrical clamping in both polarities, enabling protection of AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<5 µA at 10.2 V).
It delivers 1500 W peak pulse power per 10/1000 µs waveform with a maximum clamping voltage of 16.7 V at 89.8 A, achieving a clamping ratio of 1.32 - indicating tight voltage control during surge events. Thermal resistance is rated at RθJA = 75 °C/W and RθJL = 15.4 °C/W, supporting reliable operation up to TJ = +175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 11.4–12.6 V at 1 mA - defines precise voltage threshold for avalanche conduction in both directions |
| Stand-off Voltage VWM | 10.2 V - maximum continuous reverse working voltage before leakage exceeds 5 µA |
| Peak Pulse Power PPPM | 1500 W (10/1000 µs) - sustains high-energy transients without failure, e.g., ISO 7637-2 Pulse 5a |
| Clamping Voltage VC | 16.7 V at 89.8 A - limits protected circuit voltage during full-rated surge, enabling safe IC-level protection |
| Leakage Current ID | <5 µA at 10.2 V - ensures minimal loading on low-power sensor or communication lines |
| Operating Temperature | −55 °C to +175 °C - supports under-hood automotive, industrial, and harsh-environment deployment |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
Package: DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body with matte tin-plated leads; RoHS compliant and qualified to JESD 201 Class 2 whisker test (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bi-directional) | Transient current path | No polarity marking; terminals are functionally identical - conducts surge current symmetrically in either direction |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded sensor outputs without polarity constraints |
| 1500 W peak pulse rating | Withstands severe transients such as load dump (ISO 16750-2) and EFT bursts (IEC 61000-4-4) without degradation |
| Glass-passivated junction | Ensures long-term stability of VBR and low parameter drift across temperature and lifetime |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring zero-failure reliability |
| UL 94 V-0 molding compound | Provides flame-retardant encapsulation meeting safety standards for enclosed industrial and automotive enclosures |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting engine coolant temperature and pressure sensors exposed to alternator load dump and inductive switching noise. IC Role / Device Role / Timing Role: Bi-directional TVS placed across sensor supply and ground to clamp ±100 V transients within 1 ns. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V analog front-end ICs while maintaining <5 µA standby leakage. |
Use Scenario: Shielding RS-485 transceivers in factory automation PLCs from ESD and cable-induced surges. IC Role / Device Role / Timing Role: Placed differentially between A/B lines and common-mode across A-GND/B-GND to suppress common- and differential-mode transients. Use Value: Maintains signal integrity up to 10 Mbps by limiting clamped voltage to ≤16.7 V, well below transceiver absolute max ratings. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Control |
Use Scenario: Safeguarding DSL/POE line interface ICs against lightning-induced surges on outdoor copper pairs. IC Role / Device Role / Timing Role: First-stage protector mounted at connector entry, shunting >1 kA surges before reaching integrated PHY or transformer. Use Value: Achieves <1 ns response and 1500 W dissipation - exceeding ITU-T K.20/K.21 requirements for class B equipment. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Mounted across motor terminals to absorb inductive kickback energy during MOSFET turn-off. Use Value: Limits flyback voltage to 16.7 V, preventing gate oxide rupture in 25 V-rated motor driver FETs and reducing EMI radiation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12CA | Lower PPPM (600 W), smaller SMB package (vs. DO-201AD), higher VC/VBR ratio (1.43) | Better suited for space-constrained PCBs with moderate surge exposure (e.g., USB ports), not recommended for ISO 7637-2 Pulse 5a | Select when board area is limited and peak surge energy is ≤600 W; verify thermal derating at elevated ambient temperatures |
| 1.5SMC12CA | Same 1500 W rating and DO-214AB package, but non-AEC-Q101; slightly higher VBR tolerance (±6.5% vs. ±5%) | Targeted at industrial/commercial systems where automotive qualification is not required; lower cost, same footprint | Choose for cost-sensitive industrial designs where AEC-Q101 is unnecessary; confirm compatibility with existing DO-214AB layout |
Compared with SMBJ12CA and 1.5SMC12CA, the 1.5KE12CAHE3/51 uniquely combines AEC-Q101 qualification, DO-201AD mechanical robustness, and tight 11.4–12.6 V VBR tolerance - making it the preferred choice for automotive and high-reliability industrial surge protection where regulatory compliance and parametric consistency are mandatory.
Availability
1.5KE12CAHE3/51 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, telecom line cards, and appliance motor control circuits requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE12CAHE3/51 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, efficiency, and application-specific performance.
The 1.5KE12CAHE3/51 belongs to Vishay's TRANSZORB® family - engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure where fast response, repeatable clamping, and AEC-Q101 validation are essential.
FAQ
What is the exact breakdown voltage range for 1.5KE12CAHE3/51?
The 1.5KE12CAHE3/51 has a guaranteed breakdown voltage (VBR) range of 11.4 V to 12.6 V at a test current of 1 mA, measured per JEDEC standard. This ±5% tolerance ensures consistent clamping onset across production lots and supports precise system-level overvoltage margining in designs using the 1.5KE12CAHE3/51.
Is 1.5KE12CAHE3/51 suitable for automotive applications?
Yes - the 1.5KE12CAHE3/51 carries AEC-Q101 qualification (per note 2 in the Vishay datasheet), confirming its reliability for automotive use cases including engine control units, body electronics, and ADAS sensor modules. Its −55 °C to +175 °C operating range and robust surge handling make it appropriate for under-hood and chassis-mounted deployments.
How does the clamping voltage of 1.5KE12CAHE3/51 compare to its breakdown voltage?
The 1.5KE12CAHE3/51 clamps to 16.7 V at its rated peak pulse current of 89.8 A (10/1000 µs), yielding a clamping ratio (VC/VBR) of approximately 1.32. This tight ratio ensures minimal overvoltage stress on downstream ICs - critical when protecting 12 V rail interfaces or 5 V logic inputs using the 1.5KE12CAHE3/51.
What package type does 1.5KE12CAHE3/51 use, and is it lead-free?
The 1.5KE12CAHE3/51 uses the DO-201AD axial package (Case Style 1.5KE), with matte tin-plated leads compliant with RoHS and JESD 201 Class 2 whisker testing. The "HE3" suffix explicitly denotes RoHS compliance and AEC-Q101 qualification - confirming full lead-free construction and automotive process validation.
Can 1.5KE12CAHE3/51 be used in bi-directional signal lines like RS-485 or CAN?
Yes - the "CA" suffix confirms bi-directional functionality, meaning the 1.5KE12CAHE3/51 provides symmetrical clamping for both positive and negative transients. It is widely deployed across RS-485 differential pairs and CAN bus lines to suppress ESD, EFT, and surge events without polarity sensitivity - a key advantage of the 1.5KE12CAHE3/51 in bidirectional communication protection.
1.5KE12CAHE3/51 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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 89.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE12CAHE3/51 FAQ
1.How can I place an order for 1.5KE12CAHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE12CAHE3/51 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 1.5KE12CAHE3/51 reliable?
The price and inventory of 1.5KE12CAHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE12CAHE3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE12CAHE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE12CAHE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE12CAHE3/51?
1.5KE12CAHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE12CAHE3/51 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 1.5KE12CAHE3/51?
For technical support, including 1.5KE12CAHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE12CAHE3/51 requirements.
6.How does Aetrix verify that 1.5KE12CAHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE12CAHE3/51 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 1.5KE12CAHE3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE12CAHE3/51?
All 1.5KE12CAHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE12CAHE3/51, 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 1.5KE12CAHE3/51 part is unused and in its original packaging.
Return procedure for 1.5KE12CAHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE12CAHE3/51 Tags
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