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Vishay General Semiconductor - Diodes Division 1.5KE11CAHE3/51
- Part No.:
- 1.5KE11CAHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE11CAHE3/51.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,483
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Product details
Overview
1.5KE11CAHE3/51 from Vishay General Semiconductor is a bi-directional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 11 V breakdown voltage (VBR min/max = 10.5–11.6 V), 1500 W peak pulse power (10/1000 µs), clamping voltage of 15.6 V at 96.2 A, and AEC-Q101 qualification for automotive-grade reliability - deployed in sensor interface protection and DC bus surge suppression.
For engineers reviewing the 1.5KE11CAHE3/51 datasheet, 1.5KE11CAHE3/51 pinout, 1.5KE11CAHE3/51 application, or 1.5KE11CAHE3/51 equivalent, key selection criteria include verified bi-directional clamping performance, JEDEC 1.5KE package thermal resistance (RθJL = 15.4 °C/W), low leakage (<5 µA at 9.4 V), and RoHS-compliant HE3 suffix with JESD 201 Class 2 whisker resistance.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, with identical breakdown (10.5–11.6 V), clamping (15.6 V), and leakage (<5 µA) characteristics in forward and reverse directions. Its glass-passivated junction enables sub-nanosecond response time and stable performance under repetitive 10/1000 µs transients up to 0.01% duty cycle.
The device uses a molded epoxy case (UL 94 V-0 rated) with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. Thermal design relies on low junction-to-lead resistance (15.4 °C/W), enabling effective heat dissipation without heatsinking for short-duration surges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 10.5–11.6 V at 1.0 mA - defines precise voltage threshold where clamping initiates in both directions |
| Stand-off Voltage VWM | 9.4 V - maximum continuous working voltage before leakage exceeds 5 µA |
| Peak Pulse Power PPPM | 1500 W (10/1000 µs) - sustains high-energy lightning/surge events without failure |
| Clamping Voltage VC | 15.6 V at 96.2 A - limits transient voltage seen by downstream ICs to safe levels |
| 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 HTOL, TCT, and ESD |
| Package Thermal Resistance RθJL | 15.4 °C/W - enables predictable thermal rise during surge events with minimal PCB copper |
Pinout & Package
1.5KE11CAHE3/51 uses the standard axial-leaded Case Style 1.5KE package (JEDEC DO-201AD), with no polarity marking - consistent with bi-directional functionality. Leads are matte tin-plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional current path | No functional distinction - either lead serves as input/output for transient energy absorption |
| Lead 1 / Lead 2 | Thermal conduction path | Direct junction-to-lead thermal interface (RθJL = 15.4 °C/W) for surge energy dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping symmetry | Identical VBR, VC, and IPPM in both polarities - eliminates need for orientation-aware layout |
| 1500 W pulse power rating | Withstands 10/1000 µs transients up to 96.2 A - meets IEC 61000-4-5 Level 4 surge immunity |
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock |
| Glass passivated junction | Ensures stable VBR tolerance (±5%) and low parameter drift over lifetime and temperature |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance - suitable for high-reliability industrial and automotive assembly |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed directly at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Limits induced surges to ≤15.6 V, preserving 3.3 V/5 V logic integrity and preventing latch-up in microcontrollers and ADCs. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring transients and relay coil kickback. IC Role / Device Role / Timing Role: Primary overvoltage clamp on channel-level inputs, coordinated with series impedance for IEC 61000-4-4/5 compliance. Use Value: Absorbs 1500 W pulses without degradation, maintaining <5 µA leakage at 9.4 V to avoid false triggering in high-impedance sensing circuits. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Secondary surge protection on Ethernet PHY power rails and data line terminations in PoE-powered switches and base stations. IC Role / Device Role / Timing Role: Fast-response bi-directional clamp parallel to primary MOV-based protection, handling residual fast-rising edges. Use Value: Sub-nanosecond response ensures clamping occurs before sensitive PHY ICs experience overstress - critical for 10/100/1000BASE-T interoperability. |
Use Scenario: Input-stage transient suppression in AC-DC adapters for smart home devices, guarding bridge rectifier and PFC controller inputs. IC Role / Device Role / Timing Role: Standoff-rated (9.4 V) clamp across bulk capacitor to suppress line-switching spikes and differential-mode surges. Use Value: Maintains 175 °C max junction temperature under repeated 10/1000 µs events, enabling compact adapter designs without derating penalties. |
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 rating (vs. 1500 W), SMC package (smaller footprint, higher RθJA) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 | Select when board space is constrained and surge threat level is ≤600 W (e.g., secondary-side protection) |
| 1.5KE11CA | Same electrical specs but commercial-grade (E3 suffix only); lacks AEC-Q101 qualification and JESD 201 Class 2 whisker rating | Not approved for automotive or long-lifecycle industrial deployments | Choose for cost-sensitive consumer applications where automotive qualification is unnecessary |
Compared with SMBJ11CA and 1.5KE11CA, the 1.5KE11CAHE3/51 uniquely delivers 1500 W surge capability in an AEC-Q101-qualified, whisker-resistant package - making it the only option among the three validated for under-hood automotive and high-reliability industrial use cases requiring full IEC 61000-4-5 compliance.
Availability
1.5KE11CAHE3/51 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1.5KE11CAHE3/51 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5KE family was engineered specifically for high-power transient suppression in harsh environments - emphasizing robustness, repeatable clamping, and qualification to AEC-Q101 and UL 497B standards.
FAQ
What is the breakdown voltage tolerance for 1.5KE11CAHE3/51?
The 1.5KE11CAHE3/51 has a specified breakdown voltage range of 10.5 V to 11.6 V at 1.0 mA test current, corresponding to ±5% tolerance around the nominal 11 V rating. This tight VBR window ensures predictable clamping onset and compatibility with 12 V system designs. The value is measured per JEDEC standard and confirmed in Vishay's 88301 datasheet revision 11-Oct-16.
Is 1.5KE11CAHE3/51 suitable for automotive applications?
Yes, the 1.5KE11CAHE3/51 is AEC-Q101 qualified and explicitly listed in Vishay's documentation as meeting automotive stress test requirements. Its HE3 suffix denotes compliance with JESD 201 Class 2 whisker resistance and RoHS standards - making it approved for under-hood ECU, body control module, and sensor interface use. The 175 °C max junction temperature further supports engine compartment deployment.
How does the clamping voltage of 1.5KE11CAHE3/51 compare to its breakdown voltage?
The 1.5KE11CAHE3/51 clamps at 15.6 V when subjected to its rated peak pulse current of 96.2 A (10/1000 µs waveform), which is approximately 40% above its minimum breakdown voltage of 10.5 V. This controlled voltage overshoot ensures protected circuits remain within safe operating limits while accommodating surge energy - a key design advantage over Zener-based alternatives with higher dynamic impedance.
What is the meaning of the "HE3" and "/51" suffixes in 1.5KE11CAHE3/51?
The "HE3" suffix indicates RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. The "/51" denotes the preferred packaging option: 13" diameter paper tape and reel, with a base quantity of 1400 units. This packaging format is optimized for automated SMT placement and traceable lot control in high-volume manufacturing.
Can 1.5KE11CAHE3/51 be used in bi-directional signal lines like RS-485 or CAN?
Yes, the 1.5KE11CAHE3/51 is inherently bi-directional and commonly deployed on differential bus lines including CAN and RS-485. Its symmetrical clamping (identical VBR and VC in both polarities), low capacitance (~100 pF typical), and fast response (<1 ns) make it ideal for protecting transceivers without distorting signal integrity - provided layout minimizes parasitic inductance in the protection path.
1.5KE11CAHE3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE11CAHE3/51 FAQ
1.How can I place an order for 1.5KE11CAHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE11CAHE3/51 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 1.5KE11CAHE3/51 reliable?
The price and inventory of 1.5KE11CAHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE11CAHE3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE11CAHE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE11CAHE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE11CAHE3/51?
1.5KE11CAHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE11CAHE3/51 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 1.5KE11CAHE3/51?
For technical support, including 1.5KE11CAHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE11CAHE3/51 requirements.
6.How does Aetrix verify that 1.5KE11CAHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE11CAHE3/51 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 1.5KE11CAHE3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE11CAHE3/51?
All 1.5KE11CAHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE11CAHE3/51, 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 1.5KE11CAHE3/51 part is unused and in its original packaging.
Return procedure for 1.5KE11CAHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE11CAHE3/51 Tags
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