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Vishay General Semiconductor - Diodes Division 1.5KE12C-E3/54
- Part No.:
- 1.5KE12C-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE12C-E3/54.pdf
- Description:
- TVS DIODE 9.72VWM 17.3VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:7,764
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Product details
Overview
1.5KE12C-E3/54 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 12 V breakdown voltage (VBR = 11.4–12.6 V at 1.0 mA), 1500 W peak pulse power (10/1000 µs), and clamps to ≤16.7 V at 89.8 A, protecting sensitive ICs and MOSFETs in automotive and industrial interfaces.
For engineers reviewing the 1.5KE12C-E3/54 datasheet, 1.5KE12C-E3/54 pinout, 1.5KE12C-E3/54 application, or 1.5KE12C-E3/54 equivalent, this device serves as a robust overvoltage protection component for unidirectional/bidirectional DC rails, sensor signal lines, and I/O ports where fast response (<1 ns), low clamping voltage, and AEC-Q101 qualification are critical selection criteria.
Technical Context
The 1.5KE12C-E3/54 operates as a silicon avalanche diode with glass-passivated junction, delivering bidirectional clamping without polarity marking. Its 10/1000 µs waveform rating defines its 1500 W surge handling capability, while thermal resistance (RθJL = 15.4 °C/W) supports reliable power dissipation under repetitive transient conditions.
It exhibits a maximum reverse leakage of 5.0 µA at 10.2 V stand-off voltage (VWM), and a temperature coefficient of VBR of +0.078 %/°C - enabling stable clamping across –55 °C to +175 °C operating junction range. The device is RoHS-compliant and rated for solder dip up to 275 °C for 10 s.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at 1.0 mA - ensures precise breakdown initiation within tight tolerance for predictable clamping onset |
| VWM | 10.2 V - maximum continuous working voltage before leakage exceeds 5.0 µA, defining safe DC operating margin |
| VC @ IPPM | ≤16.7 V at 89.8 A - limits downstream voltage stress during worst-case 1500 W transient events |
| PPPM | 1500 W (10/1000 µs) - sustains high-energy surges common in automotive load-dump or inductive switching |
| TJ Range | –55 °C to +175 °C - supports operation in under-hood automotive and industrial environments |
| Package | Case Style 1.5KE (DO-201AD) - industry-standard axial-leaded package with 0.375" lead length for through-hole mounting |
| Qualification | AEC-Q101 qualified (per 1.5KE12CAHE3_B variant) - validated for automotive electronic systems requiring reliability certification |
Pinout & Package
1.5KE12C-E3/54 uses the DO-201AD axial-leaded package (Case Style 1.5KE), with no polarity marking due to bidirectional functionality. Leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction terminal | Either end functions identically - no cathode band; enables placement flexibility in AC-coupled or floating signal paths |
| Lead 1 / Lead 2 | Current path for transient conduction | Leads conduct full IPPM (89.8 A) during clamping; RθJL = 15.4 °C/W ensures thermal stability under surge duty cycle ≤0.01 % |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| 1500 W peak pulse power (10/1000 µs) | Handles high-energy transients from inductive load switching or lightning-induced surges without degradation |
| Clamping voltage ≤16.7 V at 89.8 A | Protects 12 V logic-level components (e.g., microcontrollers, CAN transceivers) by limiting voltage excursion below damage threshold |
| Response time <1 ns | Activates faster than MOVs or GDTs, preventing voltage overshoot before downstream ICs experience overstress |
| AEC-Q101 qualification (HE3 variants) | Validated for automotive applications including body control modules and sensor interfaces requiring zero-failure reliability |
Applications
| Automotive Power Line Protection | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load-dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across power rail input, absorbing energy before it reaches LDOs or MCU power pins. Use Value: Limits rail voltage to ≤16.7 V during 1500 W surges, preventing latch-up or gate oxide rupture in 12 V-rated semiconductors. | Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS placed at connector interface to shunt fast transients (<1 ns) before reaching op-amp inputs or ADC front-end. Use Value: Maintains signal integrity by clamping ±15 kV contact ESD (IEC 61000-4-2) with minimal leakage (5.0 µA at 10.2 V) in standby mode. |
| Telecom Interface Surge Suppression | Consumer Device USB/UART Port Protection |
Use Scenario: Safeguarding RS-485 transceivers on outdoor telecom node PCBs exposed to induced lightning surges on twisted-pair lines. IC Role / Device Role / Timing Role: Bidirectional TVS connected line-to-line and line-to-ground to clamp differential and common-mode transients simultaneously. Use Value: Withstands 10/1000 µs surges up to 89.8 A while maintaining ≤16.7 V clamping - preserving transceiver data integrity and avoiding bus lockup. | Use Scenario: Adding robustness to USB 2.0 or UART debug ports on smart home hubs against user-handling ESD and hot-plug voltage spikes. IC Role / Device Role / Timing Role: Discrete TVS mounted directly at board edge connector, providing first-line defense before internal level-shifters or USB PHYs. Use Value: Delivers sub-1 ns response and low VC to prevent false resets or communication errors during ±8 kV air-gap ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12CA | Surface-mount SMB package (vs. axial DO-201AD); same VBR (11.4–12.6 V), lower PPPM = 600 W | Preferred for space-constrained PCBs; unsuitable for >600 W surge requirements | Select when board area is limited and surge energy is ≤600 W; verify thermal pad layout for SMBJ12CA's RθJA = 110 °C/W |
| 1.5KE12A-E3/54 | Unidirectional version; identical VBR, VC, and PPPM, but marked with cathode band and higher VF = 3.5 V at 100 A | Required only for DC-biased unidirectional rails where reverse conduction must be blocked | Choose 1.5KE12A-E3/54 if circuit topology mandates polarity-sensitive clamping; otherwise 1.5KE12C-E3/54 offers greater design flexibility |
Compared with SMBJ12CA and 1.5KE12A-E3/54, the 1.5KE12C-E3/54 uniquely combines axial-leaded mechanical robustness, 1500 W surge capacity, and true bidirectional symmetry - making it optimal for high-reliability through-hole deployments in automotive and industrial power/signal interfaces where layout flexibility and energy handling outweigh footprint constraints.
Availability
1.5KE12C-E3/54 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom line surge suppression requiring stable component supply, long-lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for 1.5KE12C-E3/54 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 validation are mandatory.
FAQ
What is the breakdown voltage tolerance of the 1.5KE12C-E3/54?
The 1.5KE12C-E3/54 has a specified breakdown voltage (VBR) range of 11.4 V to 12.6 V at a test current of 1.0 mA, representing a ±5.0 % tolerance around the nominal 12 V rating. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable system-level overvoltage margining in designs using the 1.5KE12C-E3/54.
Is the 1.5KE12C-E3/54 suitable for automotive applications?
Yes - the 1.5KE12C-E3/54 is offered in an AEC-Q101-qualified variant (1.5KE12CAHE3_B), confirming its suitability for automotive electronics including body control modules, sensor interfaces, and infotainment power supplies. The 1.5KE12C-E3/54 itself shares identical electrical specs and construction; qualification status depends on the specific suffix and lot traceability provided by Vishay.
How does the clamping voltage of the 1.5KE12C-E3/54 compare to its breakdown voltage?
The 1.5KE12C-E3/54 clamps to a maximum of 16.7 V at its peak pulse current (IPPM = 89.8 A), which is approximately 39 % above its minimum breakdown voltage (11.4 V). This incremental clamping voltage (ΔVC = VC – VBR) reflects the device's low dynamic impedance during surge conduction - a key parameter ensuring effective protection of 12 V-rated ICs when using the 1.5KE12C-E3/54.
What is the maximum reverse leakage current for the 1.5KE12C-E3/54 at its working voltage?
At its maximum stand-off voltage (VWM = 10.2 V), the 1.5KE12C-E3/54 exhibits a maximum reverse leakage current (ID) of 5.0 µA at 25 °C. This low leakage ensures minimal power loss and signal interference in always-on circuits, supporting efficient operation in battery-powered or low-quiescent-current systems using the 1.5KE12C-E3/54.
Can the 1.5KE12C-E3/54 be used in both AC and DC circuits?
Yes - the 1.5KE12C-E3/54 is a bidirectional TVS diode with symmetrical avalanche characteristics in both polarities, making it suitable for AC-coupled signal lines (e.g., RS-485, audio), floating DC buses, and any application requiring clamping regardless of voltage polarity. Its lack of cathode marking simplifies placement and eliminates orientation concerns during assembly of boards using the 1.5KE12C-E3/54.
1.5KE12C-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 9.72V
- Voltage - Breakdown (Min):
- 10.8V
- Voltage - Clamping (Max) @ Ipp:
- 17.3V
- Current - Peak Pulse (10/1000µs):
- 86.7A
- 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
1.5KE12C-E3/54 FAQ
1.How can I place an order for 1.5KE12C-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE12C-E3/54 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 1.5KE12C-E3/54 reliable?
The price and inventory of 1.5KE12C-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE12C-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE12C-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE12C-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE12C-E3/54?
1.5KE12C-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE12C-E3/54 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 1.5KE12C-E3/54?
For technical support, including 1.5KE12C-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE12C-E3/54 requirements.
6.How does Aetrix verify that 1.5KE12C-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE12C-E3/54 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 1.5KE12C-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE12C-E3/54?
All 1.5KE12C-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE12C-E3/54, 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 1.5KE12C-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE12C-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE12C-E3/54 Tags
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