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Vishay General Semiconductor - Diodes Division 1.5KE12CAHE3_B/C
- Part No.:
- 1.5KE12CAHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE12CAHE3_B/C.pdf
- Description:
- 1.5KW,12V 5%,BIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,091
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Product details
Overview
1.5KE12CAHE3_B/C from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal 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), and clamps transients to ≤16.7 V at 89.8 A, with AEC-Q101 qualification and RoHS-compliant HE3 packaging.
For engineers reviewing the 1.5KE12CAHE3_B/C datasheet, 1.5KE12CAHE3_B/C pinout, 1.5KE12CAHE3_B/C application, or 1.5KE12CAHE3_B/C equivalent, this device serves as a high-reliability, bidirectional clamping solution for automotive sensor interfaces, industrial I/O protection, and telecom line surge suppression where fast response (<1 ns), low clamping voltage, and repeatable surge handling are critical.
Technical Context
This TVS operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable VBR tolerance (±5%), low leakage (<5 µA at 10.2 V), and thermal stability up to 175 °C junction temperature.
The device delivers 1500 W peak pulse power under standardized 10/1000 µs waveform conditions, with clamping voltage tightly controlled at 16.7 V - a key parameter for safeguarding downstream MOSFETs and ICs rated for ≤20 V absolute maximum. Its 15.4 °C/W junction-to-lead thermal resistance supports reliable power dissipation in leaded PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 11.4–12.6 V at 1 mA - defines precise clamping onset threshold for bidirectional overvoltage events |
| Stand-off Voltage VWM | 10.2 V - maximum continuous reverse working voltage before leakage exceeds 5 µA |
| Clamping Voltage VC | ≤16.7 V at 89.8 A - limits transient voltage seen by protected circuitry during 1500 W surge |
| Peak Pulse Power PPPM | 1500 W (10/1000 µs) - enables single-event surge handling per IEEE C62.35 standards |
| Junction Temperature Range | −55 °C to +175 °C - supports operation in under-hood automotive and industrial environments |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with matte tin-plated leads, UL 94 V-0 molding |
Pinout & Package
1.5KE12CAHE3_B/C uses a two-terminal axial-leaded DO-201AD (Case Style 1.5KE) package. As a bidirectional TVS, it has no polarity marking; both terminals are functionally identical and interchangeable in circuit placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional surge path terminal | Either lead connects to protected line; no cathode band - enables polarity-agnostic placement on AC or differential traces |
| Leads (matte tin plated) | Thermal and electrical interface | Supports J-STD-002 solderability and 275 °C/10 s solder dip; provides primary heat conduction path (RθJL = 15.4 °C/W) |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures ±5% VBR tolerance and long-term stability under thermal cycling and humidity |
| 1500 W peak pulse rating (10/1000 µs) | Protects against severe lightning-induced surges per IEC 61000-4-5 Level 4 (4 kV) |
| Response time <1 ns | Clamps transients before sensitive ICs experience overstress - faster than MOVs or GDTs |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive use including engine control units, ADAS sensors, and body electronics |
| RoHS-compliant HE3 packaging | Meets JESD 201 Class 2 whisker resistance and UL 94 V-0 flammability for safety-critical systems |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role: Bidirectional clamping element placed across differential signal pairs or supply rails. Use Value: Limits transient excursions to ≤16.7 V, preserving integrity of 12 V-rated automotive ICs while meeting ISO 16750-2 pulse 5a requirements. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring surges and inductive kickback. IC Role / Device Role: Primary overvoltage clamp on channel-level signal conditioning front-ends. Use Value: Withstands repetitive 1500 W surges without degradation, extending module service life in factory automation environments. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Shielding Ethernet PHYs and DSL line drivers from induced lightning surges on outdoor copper lines. IC Role / Device Role: Secondary protection stage after gas discharge tube (GDT), absorbing residual energy. Use Value: Fast sub-nanosecond response complements slower primary protectors, achieving coordinated clamping below IC damage thresholds. |
Use Scenario: Preventing output overvoltage faults in wall-mounted AC/DC adapters due to regulator failure or capacitor aging. IC Role / Device Role: Crowbar-style clamp across secondary-side DC output to trigger fuse or OVP shutdown. Use Value: 10.2 V stand-off ensures no conduction during normal 12 V output regulation, yet triggers reliably at >11.4 V fault conditions. |
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 | Lower PPPM (600 W), smaller SMB package (surface-mount), higher VC (23.2 V at 25.9 A) | Preferred for space-constrained PCBs; less suitable for high-energy surges requiring 1500 W handling | Select when board area is limited and surge threat level is moderate (IEC 61000-4-5 Level 2) |
| 1.5KE12AHE3_B/C | Unidirectional version - includes cathode band, forward voltage drop (~3.5 V), not usable for AC/differential protection | Applicable only for DC rail protection with defined polarity; cannot replace bidirectional function | Choose only if circuit topology enforces unidirectional current flow and polarity is fixed |
Compared with SMBJ12CA and 1.5KE12AHE3_B/C, the 1.5KE12CAHE3_B/C uniquely combines 1500 W surge capacity, bidirectional symmetry, and AEC-Q101 qualification - making it the sole option among these three for high-energy, polarity-agnostic automotive and industrial protection where reliability under repeated stress is mandatory.
Availability
1.5KE12CAHE3_B/C is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line interfaces, and consumer power adapter outputs requiring stable component supply across extended production lifecycles.
Supply support for 1.5KE12CAHE3_B/C 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 and application-specific performance.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure resilience and standardized surge compliance are non-negotiable.
FAQ
What is the breakdown voltage range of the 1.5KE12CAHE3_B/C?
The 1.5KE12CAHE3_B/C has a guaranteed breakdown voltage (VBR) range of 11.4 V to 12.6 V measured at 1 mA test current. This tight ±5% tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage threshold design in circuits protecting 12 V nominal systems.
Is the 1.5KE12CAHE3_B/C suitable for automotive applications?
Yes, the 1.5KE12CAHE3_B/C is AEC-Q101 qualified (per note 2 in the Vishay datasheet) and manufactured with HE3 suffix - confirming compliance with automotive stress testing including high-temperature reverse bias, temperature cycling, and mechanical shock. It is widely deployed in engine control units and ADAS sensor modules.
How does the 1.5KE12CAHE3_B/C differ from unidirectional 1.5KE12AHE3_B/C?
The 1.5KE12CAHE3_B/C is bidirectional with symmetrical clamping in both polarities and no polarity marking, whereas the 1.5KE12AHE3_B/C is unidirectional with a cathode band and conducts forward current below ~3.5 V. The "CA" suffix explicitly denotes bidirectional functionality - they are not interchangeable in AC or differential signal paths.
What is the maximum clamping voltage of the 1.5KE12CAHE3_B/C under surge conditions?
The 1.5KE12CAHE3_B/C clamps to a maximum of 16.7 V when subjected to its rated peak pulse current of 89.8 A (10/1000 µs waveform). This value is critical for ensuring protected ICs - such as 16 V-tolerant microcontrollers or CAN transceivers - remain within safe operating voltage limits during transient events.
Does the 1.5KE12CAHE3_B/C require a heatsink for standard operation?
No external heatsink is required for typical transient suppression duty cycles (e.g., infrequent surges), as the device dissipates only 6.5 W continuously at 75 °C lead temperature. Its 15.4 °C/W junction-to-lead thermal resistance allows adequate self-cooling through PCB copper and lead conduction in standard through-hole mounting.
1.5KE12CAHE3_B/C 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:
- Active
- 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):
- 94A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- 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_B/C FAQ
1.How can I place an order for 1.5KE12CAHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE12CAHE3_B/C 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_B/C reliable?
The price and inventory of 1.5KE12CAHE3_B/C 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_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE12CAHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE12CAHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE12CAHE3_B/C?
1.5KE12CAHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE12CAHE3_B/C 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_B/C?
For technical support, including 1.5KE12CAHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE12CAHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE12CAHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE12CAHE3_B/C 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_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE12CAHE3_B/C?
All 1.5KE12CAHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE12CAHE3_B/C, 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_B/C part is unused and in its original packaging.
Return procedure for 1.5KE12CAHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE12CAHE3_B/C Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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Diodes Incorporated
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onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
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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