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Vishay General Semiconductor - Diodes Division 1.5KE12CHE3/54
- Part No.:
- 1.5KE12CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE12CHE3/54.pdf
- Description:
- TVS DIODE 9.72VWM 17.3VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,589
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Product details
Overview
1.5KE12CHE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary-side overvoltage protection in DC power rails and signal lines. It features a 12 V breakdown voltage (VBR = 11.4–12.6 V at 1 mA), 16.7 V maximum clamping voltage (VC) at 89.8 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the 1.5KE12CHE3/54 datasheet, 1.5KE12CHE3/54 pinout, 1.5KE12CHE3/54 application, or 1.5KE12CHE3/54 equivalent, this part delivers verified transient suppression performance with AEC-Q101 qualification, RoHS-compliant matte tin plating, and JEDEC-standard 1.5KE package - critical for reliability-critical designs requiring stable clamping behavior under lightning-induced surges and inductive switching transients.
Technical Context
This TVS diode operates as a voltage-clamping device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures low leakage (<5 µA at 10.2 V stand-off) and fast response time (~1 ns), enabling protection of sensitive downstream components before damage occurs.
The 1.5KE12CHE3/54 is rated for 175 °C maximum junction temperature and exhibits a positive temperature coefficient of VBR (+0.078 %/°C), supporting stable operation across wide thermal ranges. Its 15.4 °C/W junction-to-lead thermal resistance enables effective heat dissipation through PCB copper pours or lead-frame mounting without external heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at 1 mA - defines precise avalanche onset for predictable clamping initiation |
| VWM | 10.2 V - maximum continuous reverse working voltage before leakage rises significantly |
| VC @ IPPM | 16.7 V at 89.8 A - clamping voltage during 10/1000 µs surge, limiting stress on protected circuitry |
| PPPM | 1500 W - peak pulse power handling capability, sufficient for IEC 61000-4-5 Level 4 surges |
| IFSM | 200 A - non-repetitive forward surge current rating, supports high-energy transient absorption |
| TJ max. | 175 °C - extended thermal operating range suitable for under-hood automotive and industrial environments |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance enables efficient self-heating management |
Pinout & Package
Package: JEDEC-standard axial-leaded DO-201AD (Case Style 1.5KE), molded epoxy body with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to ground or low-impedance return plane to complete clamping loop during transients |
| Cathode | Avalanche conduction terminal | Marked with color band; connected to protected line to clamp voltage above VWM |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables <5 µA reverse leakage at VWM, minimizing standby power loss in always-on systems |
| 1500 W peak pulse power (10/1000 µs) | Supports robust protection against IEC 61000-4-5 4 kV/2 Ω surge test conditions |
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| RoHS-compliant HE3 suffix | Indicates AEC-Q101 qualification and JESD 201 Class 2 whisker resistance for long-term reliability |
| UL 94 V-0 molding compound | Provides flame-retardant encapsulation required for safety-critical industrial and transportation equipment |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 13.5 V. Use Value: Limits transient voltage to ≤16.7 V during 89.8 A pulses, preventing gate oxide rupture in MCU power regulators. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt fast-rising transients before reaching ADC input stage. Use Value: Sub-1 ns response ensures clamping occurs before 12-bit ADC sampling window, preserving measurement integrity. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Stage |
Use Scenario: Safeguarding Ethernet PHY power supplies against induced lightning surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS on +3.3 V or +5 V bias rail feeding PoE interface ICs. Use Value: 1500 W rating absorbs multiple 10/1000 µs impulses per IEC 61000-4-5, extending system field life. | Use Scenario: Overvoltage suppression on AC/DC adapter secondary-side output before USB-C PD controller. IC Role / Device Role / Timing Role: Unidirectional clamping device between output rail and ground to prevent overvoltage damage during regulation fault. Use Value: 10.2 V VWM allows normal 9–12 V operation while triggering only during failure-mode overvoltage 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 |
|---|---|---|---|
| SMBJ12A | Lower PPPM (600 W), smaller SMB package, higher VC (19.9 V at 30 A) | Best suited for space-constrained PCBs where lower surge energy is expected | Select when board area is limited and surge threat level is IEC 61000-4-5 Level 2 (1 kV) |
| 1.5KE12A-E3/54 | Same electrical specs but commercial-grade (non-AEC-Q101), same DO-201AD package | Appropriate for cost-sensitive industrial or consumer applications without automotive qualification requirements | Choose for non-automotive use cases where AEC-Q101 is not mandated |
Compared with SMBJ12A and 1.5KE12A-E3/54, the 1.5KE12CHE3/54 uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and DO-201AD mechanical robustness - making it the preferred choice for automotive power domain protection where both reliability and high-energy clamping are mandatory.
Availability
1.5KE12CHE3/54 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom line card surge suppression requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE12CHE3/54 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, efficiency, and application-specific optimization.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure due to voltage surges must be eliminated.
FAQ
What is the breakdown voltage tolerance of the 1.5KE12CHE3/54?
The 1.5KE12CHE3/54 has a specified breakdown voltage range of 11.4 V to 12.6 V at 1 mA test current, representing ±5.0 % tolerance around the nominal 12 V rating. This tight VBR window ensures consistent clamping behavior across production lots and supports reliable design margining in safety-critical applications such as automotive power distribution networks.
Is the 1.5KE12CHE3/54 suitable for bidirectional transient protection?
No, the 1.5KE12CHE3/54 is a unidirectional TVS diode, indicated by the absence of "C" in its part number. Bidirectional variants (e.g., 1.5KE12CAHE3/54) exist in the same family but are distinct parts. Using the 1.5KE12CHE3/54 for AC or bipolar signal line protection would result in forward conduction during negative half-cycles, potentially damaging the device or circuit.
Does the 1.5KE12CHE3/54 require a heatsink for standard operation?
No, the 1.5KE12CHE3/54 does not require an external heatsink under typical transient conditions due to its 15.4 °C/W junction-to-lead thermal resistance and short-duration pulse nature (≤1 ms). However, PCB layout must include ≥10 mm² of 2 oz copper connected to each lead to ensure adequate heat spreading during repetitive surge events.
What does the "HE3" suffix signify in 1.5KE12CHE3/54?
The "HE3" suffix in 1.5KE12CHE3/54 indicates RoHS compliance plus AEC-Q101 qualification, JESD 201 Class 2 whisker resistance, and packaging in 13" paper tape and reel (54 = base quantity code for 1400 units). This distinguishes it from commercial-grade "E3" variants and confirms suitability for automotive electronics per ISO/TS 16949 requirements.
How does the clamping voltage of 1.5KE12CHE3/54 compare to its breakdown voltage?
The 1.5KE12CHE3/54 clamps at 16.7 V when subjected to its rated 89.8 A peak pulse current (10/1000 µs), which is ~39 % above its minimum breakdown voltage of 11.4 V. This VC–VBR margin reflects the device's incremental surge resistance and ensures protected circuits experience controlled overvoltage rather than unclamped transients.
1.5KE12CHE3/54 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE12CHE3/54 FAQ
1.How can I place an order for 1.5KE12CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE12CHE3/54 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 1.5KE12CHE3/54 reliable?
The price and inventory of 1.5KE12CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE12CHE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE12CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE12CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE12CHE3/54?
1.5KE12CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE12CHE3/54 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 1.5KE12CHE3/54?
For technical support, including 1.5KE12CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE12CHE3/54 requirements.
6.How does Aetrix verify that 1.5KE12CHE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE12CHE3/54 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 1.5KE12CHE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE12CHE3/54?
All 1.5KE12CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE12CHE3/54, 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 1.5KE12CHE3/54 part is unused and in its original packaging.
Return procedure for 1.5KE12CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE12CHE3/54 Tags
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