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Vishay General Semiconductor - Diodes Division 1.5KE12CA/54
- Part No.:
- 1.5KE12CA/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE12CA/54.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:9,149
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Product details
Overview
1.5KE12CA/54 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 1.0 mA), 1500 W peak pulse power (10/1000 µs), and clamps to ≤16.7 V at 89.8 A, making it suitable for protecting MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5KE12CA/54 datasheet, 1.5KE12CA/54 pinout, 1.5KE12CA/54 application, or 1.5KE12CA/54 equivalent, this device delivers verified bidirectional clamping performance with UL 94 V-0 molded epoxy packaging, AEC-Q101 qualification availability (HE3 suffix), and JEDEC-standard 1.5KE case compatibility - critical for automotive, industrial, and telecom surge protection design validation.
Technical Context
This TVS diode operates symmetrically in both polarities due to its bidirectional construction, enabling single-device protection of AC-coupled or floating signal paths without polarity constraints. Its glass-passivated junction ensures stable VBR tolerance (±5%), low incremental surge resistance, and sub-nanosecond response time (<1 ns) to transient events.
The device complies with IEC 61000-4-5 (surge immunity) and UL 497B (telecom protector classification), with thermal resistance RθJA = 75 °C/W and RθJL = 15.4 °C/W. It supports repetitive 10/1000 µs pulses at 0.01% duty cycle and withstands solder dip up to 275 °C for 10 s per JESD22-B106.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at 1.0 mA - defines precise clamping onset threshold for bidirectional surge suppression |
| VWM | 10.2 V - maximum continuous reverse working voltage before leakage exceeds 5 µA |
| VC @ IPPM | ≤16.7 V at 89.8 A - actual clamped voltage during 1500 W transient, limiting stress on downstream components |
| PPPM | 1500 W (10/1000 µs waveform) - peak surge energy handling capacity for lightning and EFT events |
| IPPM | 89.8 A - maximum non-repetitive peak current the device safely clamps without failure |
| TJ range | −55 °C to +175 °C - enables 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, UL 94 V-0 rated epoxy |
Pinout & Package
1.5KE12CA/54 uses a two-terminal axial-leaded DO-201AD (Case Style 1.5KE) package. As a bidirectional TVS diode, it has no polarity marking; both terminals are functionally identical and interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge conduction path | Provides identical clamping behavior for positive and negative transients - no orientation required during placement |
| Lead 1 / Lead 2 | Thermal and electrical interface to PCB | Matte tin-plated leads compliant with J-STD-002 and JESD22-B102; support 275 °C solder dip (10 s max) |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5%), low leakage (<5 µA at VWM), and long-term reliability under thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Handles high-energy transients per IEC 61000-4-5 Level 4 (4 kV line-to-line) without degradation |
| Sub-nanosecond response time | Clamps within <1 ns - faster than MOVs or GDTs - preserving integrity of fast digital and analog signals |
| UL 94 V-0 epoxy molding | Self-extinguishing encapsulation meets fire-safety requirements for consumer, telecom, and automotive end equipment |
| AEC-Q101 qualification option (HE3 suffix) | Validated for automotive-grade reliability including HTOL, temperature cycling, and HTRB testing |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs and body control modules from load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed across power rail to divert surge current away from LDOs and microcontrollers. Use Value: Clamps 12 V system transients to ≤16.7 V, preventing latch-up or gate oxide damage in 3.3 V/5 V logic downstream. |
Use Scenario: Safeguarding 4–20 mA current-loop sensors and RS-485 transceivers in factory automation cabinets. IC Role / Device Role / Timing Role: Parallel-connected TVS on differential bus lines to suppress ESD and induced lightning surges. Use Value: Maintains signal integrity by limiting common-mode transients to <17 V while adding <0.5 pF capacitance - no data rate degradation. |
| Telecom Line Surge Protection | Consumer Power Adapter Input Stage |
Use Scenario: Primary protection on POTS or DSL line cards exposed to outdoor lightning coupling. IC Role / Device Role / Timing Role: First-stage shunt device ahead of gas discharge tube (GDT) or secondary TVS for staged coordination. Use Value: Fast response initiates clamping before GDT fires, reducing let-through voltage and protecting downstream hybrid couplers. |
Use Scenario: Input-side transient suppression in AC-DC adapters for smart home devices and IoT hubs. IC Role / Device Role / Timing Role: Across AC input rectifier output to absorb switch-mode power supply turn-on spikes and external surges. Use Value: Withstands repeated 1500 W pulses without parameter shift, ensuring multi-year field reliability in unattended deployments. |
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 | Smaller SMB package (3.5 mm × 4.6 mm), lower PPPM = 600 W, same VBR range and bidirectional configuration | Preferred for space-constrained PCBs where 600 W surge rating suffices (e.g., USB ports, low-power sensors) | Select SMBJ12CA when board area is limited and peak surge energy is ≤600 W; verify thermal derating at elevated ambient temperatures. |
| 1.5KE12A | Unidirectional version with cathode band marking; identical VBR, VC, and PPPM, but only protects one polarity | Used where DC-biased rails require asymmetric protection (e.g., 5 V microcontroller I/O with ground reference) | Choose 1.5KE12A for DC-coupled circuits needing polarity-specific clamping; avoid in AC or floating signal paths. |
Compared with SMBJ12CA and 1.5KE12A, the 1.5KE12CA/54 provides higher surge robustness (1500 W vs. 600 W) and true bidirectional symmetry - essential for protecting AC-coupled, transformer-isolated, or floating interfaces without polarity assumptions.
Availability
1.5KE12CA/54 is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom infrastructure requiring stable component supply with traceable sourcing and long-lifecycle support.
Supply support for 1.5KE12CA/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 applications where failure resilience and standardized form factor are critical.
FAQ
What is the breakdown voltage tolerance for 1.5KE12CA/54?
The 1.5KE12CA/54 has a specified breakdown voltage range of 11.4 V to 12.6 V at 1.0 mA test current, representing ±5% tolerance around the nominal 12 V rating. This tight VBR window ensures consistent clamping behavior across production lots and temperature ranges, directly supporting predictable overvoltage protection design in safety-critical systems.
Is 1.5KE12CA/54 RoHS compliant and halogen-free?
Yes, the 1.5KE12CA/54 carries the E3 suffix, indicating full RoHS compliance per Directive 2011/65/EU and halogen-free status per IEC 61249-2-21. The molded epoxy body contains no brominated flame retardants or chlorine-based compounds, meeting stringent environmental requirements for consumer, automotive, and industrial end equipment.
Can 1.5KE12CA/54 be used in parallel to increase surge current handling?
Yes, multiple 1.5KE12CA/54 devices can be paralleled to distribute surge current, but matching VBR (within ±1%) and symmetrical PCB layout are mandatory to ensure current sharing. Derating by 20% per added device is recommended; thermal coupling must also be managed to prevent localized overheating during repetitive events.
What is the maximum clamping voltage of 1.5KE12CA/54 at its rated peak pulse current?
The 1.5KE12CA/54 clamps to a maximum of 16.7 V at its rated peak pulse current of 89.8 A (10/1000 µs waveform). This value is guaranteed per datasheet Table "ELECTRICAL CHARACTERISTICS" and represents the worst-case voltage seen by protected circuitry during a full-rated surge event - a key parameter for verifying downstream component voltage margins.
Does 1.5KE12CA/54 meet AEC-Q101 qualification?
The base 1.5KE12CA/54 is commercial-grade; however, the AEC-Q101 qualified variant is designated 1.5KE12CAHE3_B (with HE3 suffix and revision code). That version undergoes extended reliability testing including HTOL, temperature cycling, and HTRB, and is approved for automotive powertrain and chassis applications per AEC-Q101 Rev D.
1.5KE12CA/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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE12CA/54 FAQ
1.How can I place an order for 1.5KE12CA/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE12CA/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 1.5KE12CA/54 reliable?
The price and inventory of 1.5KE12CA/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE12CA/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE12CA/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE12CA/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE12CA/54?
1.5KE12CA/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE12CA/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 1.5KE12CA/54?
For technical support, including 1.5KE12CA/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE12CA/54 requirements.
6.How does Aetrix verify that 1.5KE12CA/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE12CA/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 1.5KE12CA/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE12CA/54?
All 1.5KE12CA/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE12CA/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 1.5KE12CA/54 part is unused and in its original packaging.
Return procedure for 1.5KE12CA/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE12CA/54 Tags
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