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Vishay General Semiconductor - Diodes Division 1.5KE11CA/54
- Part No.:
- 1.5KE11CA/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE11CA/54.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:6,169
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Product details
Overview
1.5KE11CA/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 11 V nominal breakdown voltage (VBR = 10.5–11.6 V at 1.0 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 15.6 V at 96.2 A, and operates across –55 °C to +175 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5KE11CA/54 datasheet, 1.5KE11CA/54 pinout, 1.5KE11CA/54 application, or 1.5KE11CA/54 equivalent, this device delivers verified bidirectional clamping performance with low incremental surge resistance, fast sub-nanosecond response, and AEC-Q101 qualification options - critical for automotive power rail and industrial I/O protection design validation.
Technical Context
The 1.5KE11CA/54 implements a glass-passivated silicon PN junction optimized for transient suppression in both polarities. Its bidirectional structure eliminates polarity marking and enables symmetrical clamping on AC lines or differential buses without external orientation constraints.
It sustains 1500 W peak pulse power under standardized 10/1000 µs waveform conditions with 0.01 % duty cycle, and exhibits a maximum clamping voltage of 15.6 V at 96.2 A peak pulse current - enabling precise overvoltage limiting for 12 V nominal systems while maintaining low thermal resistance (RθJL = 15.4 °C/W).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 10.5 V / 11.6 V at 1.0 mA - defines reliable conduction onset threshold for bidirectional surge clamping |
| VWM | 9.40 V - maximum continuous reverse working voltage before leakage exceeds 5 µA |
| VC @ IPPM | 15.6 V at 96.2 A - actual clamped voltage during worst-case 1500 W transient, limiting downstream stress |
| PPPM | 1500 W - peak pulse power handling per 10/1000 µs waveform, supporting IEC 61000-4-5 Level 4 compliance |
| TJ max. | +175 °C - high-temperature operation enables placement near hot power stages without derating loss |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance supports sustained surge dissipation without heatsink |
| IFSM | Not applicable - bidirectional device has no forward surge rating; only unidirectional variants specify 200 A |
Pinout & Package
Package: Case Style 1.5KE - molded epoxy body with matte tin-plated leads, UL 94 V-0 rated, RoHS compliant (E3 suffix), 0.375" lead length standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional terminal pair | No polarity marking; either end functions identically as clamping node for AC or differential signals |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| 1500 W peak pulse power (10/1000 µs) | Supports high-energy transients common in 12 V automotive power nets and industrial motor drives |
| Sub-nanosecond response time | Clamps within ~1 ns - faster than MOVs or GDTs - preserving signal integrity in high-speed interfaces |
| AEC-Q101 qualified option (HE3 suffix) | Validated for automotive under-hood applications including engine control and ADAS power rails |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for sensitive ICs |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients per ISO 7637-2. IC Role / Device Role / Timing Role: Bidirectional TVS placed across power input to clamp ±100 V spikes to ≤15.6 V within nanoseconds. Use Value: Prevents latch-up or gate oxide damage in MCU power supplies and CAN transceivers without adding series impedance. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp on differential or single-ended signal lines upstream of ADC inputs. Use Value: Maintains signal fidelity below 1 MHz while suppressing ±8 kV contact ESD (IEC 61000-4-2) with no DC bias shift. |
| Telecom Line Surge Protection | Consumer Power Adapter Input Stage |
Use Scenario: Secondary-side protection on DSL or PoE-powered equipment exposed to induced lightning surges on twisted-pair lines. IC Role / Device Role / Timing Role: Bidirectional shunt device across line pairs to divert common-mode transients before reaching PHY ICs. Use Value: Achieves IEC 61000-4-5 4 kV (1.2/50 µs + 8/20 µs combo wave) immunity without requiring gas discharge tube coordination. | Use Scenario: Input-stage overvoltage clamp in wall adapters for smart home devices subjected to mains-borne surges. IC Role / Device Role / Timing Role: Primary-side TVS across bridge rectifier output to limit transient voltage to <20 V during brownout recovery. Use Value: Eliminates need for bulk capacitor oversizing while meeting UL 1449 Type 4 component requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA | 600 W PPPM, SMC package (smaller footprint), VC = 18.2 V @ 32.9 A | Lower power handling; suited for space-constrained PCBs with moderate surge exposure | Select when board area is limited and peak transients remain below 600 W |
| 1.5SMC11CA | Same 1500 W rating but SMC package; VBR = 10.5–11.6 V, VC = 17.0 V @ 88.2 A | Higher clamping voltage increases stress on protected circuitry vs. 1.5KE11CA/54's 15.6 V | Choose only if 1.5KE through-hole mounting is unavailable and 1.4 V higher clamping is acceptable |
Compared with SMBJ11CA and 1.5SMC11CA, the 1.5KE11CA/54 provides the lowest clamping voltage (15.6 V) among 1500 W bidirectional TVS diodes in its voltage class and maintains superior thermal robustness via its axial-leaded 1.5KE package - making it preferred for high-reliability 12 V system protection where layout space permits through-hole mounting.
Availability
1.5KE11CA/54 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, telecom line surge suppression, and consumer power adapter input staging requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE11CA/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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure due to voltage surges must be eliminated without compromising signal integrity or thermal performance.
FAQ
What is the breakdown voltage range of the 1.5KE11CA/54?
The 1.5KE11CA/54 has a guaranteed breakdown voltage range of 10.5 V to 11.6 V at a test current of 1.0 mA, measured under standard JEDEC conditions. This tight VBR window ensures consistent clamping behavior across production lots and supports precise overvoltage threshold design in 12 V systems. The 1.5KE11CA/54 achieves this specification using a glass-passivated silicon junction that maintains stability over temperature and lifetime.
Is the 1.5KE11CA/54 suitable for automotive applications?
Yes - the 1.5KE11CA/54 is offered in an AEC-Q101 qualified variant (e.g., 1.5KE11CAHE3_B) with full qualification for automotive under-hood use. While the base 1.5KE11CA/54 is commercial grade, its construction - including matte tin-plated leads, UL 94 V-0 molding compound, and 175 °C max junction temperature - meets core automotive environmental requirements. The 1.5KE11CA/54 is widely deployed in engine control units and body electronics for load dump and ISO 7637-2 transient suppression.
How does the clamping voltage of the 1.5KE11CA/54 compare to similar TVS diodes?
The 1.5KE11CA/54 clamps to 15.6 V at its rated 96.2 A peak pulse current (10/1000 µs), which is among the lowest in its 11 V VBR class. For comparison, the SMC-packaged 1.5SMC11CA clamps at 17.0 V under identical conditions - a 1.4 V penalty that directly increases stress on downstream ICs. This performance advantage stems from the 1.5KE11CA/54's lower incremental surge resistance and optimized junction geometry, making the 1.5KE11CA/54 ideal where protection margin is critical.
What is the package type and lead finish of the 1.5KE11CA/54?
The 1.5KE11CA/54 uses the axial-leaded Case Style 1.5KE package with 0.375" (9.5 mm) lead length, molded epoxy body rated UL 94 V-0, and matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. The "/54" suffix denotes packaging in 13" diameter paper tape and reel (1400 pcs/reel). Lead finish meets JESD 201 Class 1A whisker testing when ordered with E3 suffix.
Does the 1.5KE11CA/54 have polarity markings?
No - the 1.5KE11CA/54 is a bidirectional TVS diode and carries no polarity marking on its body. Its symmetrical internal structure allows either lead to serve as anode or cathode depending on transient polarity, enabling straightforward placement across AC lines, differential buses, or uncommitted power rails. This eliminates orientation errors during assembly and simplifies schematic symbol usage compared to unidirectional variants like 1.5KE11A.
1.5KE11CA/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):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 96.2A
- 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
1.5KE11CA/54 FAQ
1.How can I place an order for 1.5KE11CA/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE11CA/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 1.5KE11CA/54 reliable?
The price and inventory of 1.5KE11CA/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE11CA/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE11CA/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE11CA/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE11CA/54?
1.5KE11CA/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE11CA/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 1.5KE11CA/54?
For technical support, including 1.5KE11CA/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE11CA/54 requirements.
6.How does Aetrix verify that 1.5KE11CA/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE11CA/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 1.5KE11CA/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE11CA/54?
All 1.5KE11CA/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE11CA/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 1.5KE11CA/54 part is unused and in its original packaging.
Return procedure for 1.5KE11CA/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE11CA/54 Tags
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