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Vishay General Semiconductor - Diodes Division 1.5KE15CAHE3/51
- Part No.:
- 1.5KE15CAHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE15CAHE3/51.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:6,643
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Product details
Overview
1.5KE15CAHE3/51 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 15 V breakdown voltage (VBR min/max = 14.3–15.8 V at 1.0 mA), 12.8 V stand-off voltage (VWM), 21.2 V clamping voltage (VC) at 70.8 A peak pulse current, 1500 W peak pulse power (10/1000 µs), and AEC-Q101 qualification - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5KE15CAHE3/51 datasheet, 1.5KE15CAHE3/51 pinout, 1.5KE15CAHE3/51 application, or 1.5KE15CAHE3/51 equivalent, this page delivers verified electrical parameters, bi-directional clamping behavior, thermal derating curves, RoHS-compliant HE3 packaging, and direct alternatives with documented VBR, VC, and IPPM differences for ESD/lightning surge design validation.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, with identical VBR, VC, and leakage specifications in forward and reverse directions. Its glass-passivated junction enables sub-nanosecond response time (<1 ns) and low incremental surge resistance, critical for protecting MOSFET gates and MCU I/O pins against fast transients.
The device uses a DO-201AE package with axial leads, rated for 175 °C maximum junction temperature and 75 °C/W junction-to-ambient thermal resistance. It supports repetitive 10/1000 µs surges at 0.01% duty cycle and complies with JESD201 Class 2 whisker testing via the HE3 suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 14.3 V / 15.8 V at 1.0 mA - defines reliable conduction onset threshold under surge conditions |
| VWM | 12.8 V - maximum continuous working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 21.2 V at 70.8 A (10/1000 µs) - clamped voltage seen by protected circuit during worst-case transient |
| PPPM | 1500 W - peak surge energy absorption capability without failure |
| IPPM | 70.8 A - maximum non-repetitive surge current the device safely clamps |
| TJ max. | 175 °C - enables operation in under-hood automotive environments and high-ambient industrial settings |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: DO-201AE (Case Style 1.5KE), axial-leaded, molded epoxy body meeting UL 94 V-0; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bi-directional) | Surge current path (symmetrical) | No polarity marking; terminals interchangeable - conducts identically in either direction during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5%) and long-term reliability under thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 (4 kV line-to-line) surge immunity without derating |
| AEC-Q101 qualification | Validated for automotive powertrain and body electronics per stress test requirements |
| Low clamping ratio (VC/VBR ≈ 1.48) | Minimizes let-through voltage to protect 15 V-rated ICs and sensors |
| HE3 suffix | RoHS-compliant + JESD201 Class 2 whisker resistance - suitable for lead-free reflow and harsh environments |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and temperature/pressure sensor signal lines from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed across differential pair or single-ended sensor output. Use Value: Limits transient voltage to ≤21.2 V, preserving integrity of 12 V rail-connected analog front-ends and microcontroller ADC inputs. |
Use Scenario: Safeguarding 4–20 mA current loop receivers and ±10 V analog inputs in programmable logic controllers. IC Role / Device Role / Timing Role: Primary surge suppression on field-side input terminals before signal conditioning circuitry. Use Value: Absorbs 1500 W surges while maintaining <1 µA leakage at 12.8 V, ensuring measurement accuracy and system uptime. |
| Telecom Power Supply Rail | Consumer Appliance Motor Control |
Use Scenario: Secondary-side DC rail protection in PoE-powered switches and DSLAM line cards exposed to induced lightning surges. IC Role / Device Role / Timing Role: Parallel-connected TVS on 12–24 V distribution rails feeding PHY ICs and PMICs. Use Value: Clamps within 1 ns to prevent latch-up or gate oxide rupture in downstream FETs and regulators. |
Use Scenario: Overvoltage suppression on microcontroller GPIOs driving relay coils and BLDC motor gate drivers in washing machines and HVAC systems. IC Role / Device Role / Timing Role: Localized clamp adjacent to inductive load switching nodes. Use Value: Withstands 200 A IFSM (uni-directional reference) and repeated 10/1000 µs transients without degradation, extending board life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA | Lower PPPM (600 W), smaller SMB package (vs. DO-201AE), VC = 24.4 V @ 24.5 A | Better suited for space-constrained PCBs; lower surge capacity limits use to Level 3 IEC 61000-4-5 | Select when board area is critical and peak surge energy remains ≤600 W |
| 1.5SMC15CA | Same PPPM (1500 W), SMC package (surface-mount), VC = 24.4 V @ 61.5 A, RθJA = 15 °C/W | Enables automated assembly but requires thermal pad for full power rating; higher VC reduces margin for 15 V systems | Choose for reflow-compatible designs where thermal management allows SMC footprint |
Compared with 1.5KE15CAHE3/51, SMBJ15CA trades surge capacity for compactness, while 1.5SMC15CA matches power rating but increases clamping voltage and shifts to surface-mount - requiring layout revision and thermal validation.
Availability
1.5KE15CAHE3/51 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC analog input stages, and telecom power rail hardening requiring stable component supply, AEC-Q101 compliance, and proven 1500 W surge resilience.
Supply support for 1.5KE15CAHE3/51 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 series was engineered specifically for high-energy transient suppression in harsh environments, emphasizing AEC-Q101 qualification, stable clamping performance, and robust DO-201AE packaging for through-hole reliability.
FAQ
What is the breakdown voltage tolerance for 1.5KE15CAHE3/51?
The 1.5KE15CAHE3/51 has a specified breakdown voltage range of 14.3 V to 15.8 V at 1.0 mA test current, representing a ±5% tolerance around the nominal 15 V rating. This tight VBR window ensures consistent clamping behavior across production lots and supports precise overvoltage threshold design in safety-critical circuits.
Is 1.5KE15CAHE3/51 suitable for automotive applications?
Yes, 1.5KE15CAHE3/51 is AEC-Q101 qualified and explicitly listed in Vishay's documentation for automotive-grade use. Its DO-201AE package, 175 °C junction rating, and HE3 suffix (JESD201 Class 2 whisker resistance) meet requirements for engine control units, body electronics, and ADAS sensor modules exposed to load dump and ISO 7637-2 transients.
How does the clamping voltage of 1.5KE15CAHE3/51 compare to its breakdown voltage?
The 1.5KE15CAHE3/51 clamps at 21.2 V when subjected to its rated 70.8 A peak pulse current (10/1000 µs), yielding a clamping ratio (VC/VBR) of approximately 1.48. This low ratio ensures minimal overvoltage stress on protected 15 V-rated ICs, distinguishing it from higher-ratio alternatives that may exceed safe operating limits.
What is the meaning of the "HE3" suffix in 1.5KE15CAHE3/51?
The "HE3" suffix in 1.5KE15CAHE3/51 indicates RoHS-compliant construction plus AEC-Q101 qualification and JESD201 Class 2 whisker resistance. Unlike standard "E3" parts, HE3 devices undergo additional stress testing for automotive reliability and are validated for use in high-vibration, high-temperature environments where tin whisker growth could cause latent failures.
Can 1.5KE15CAHE3/51 be used in bi-directional signal lines like RS-485 or CAN?
Yes, 1.5KE15CAHE3/51 is explicitly designed for bi-directional applications - its CA suffix denotes symmetrical breakdown and clamping characteristics in both polarities. It is commonly deployed across differential pairs in RS-485 transceivers and CAN bus nodes, where it suppresses common-mode surges without polarity constraints or DC bias concerns.
1.5KE15CAHE3/51 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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 70.8A
- 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
1.5KE15CAHE3/51 FAQ
1.How can I place an order for 1.5KE15CAHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE15CAHE3/51 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 1.5KE15CAHE3/51 reliable?
The price and inventory of 1.5KE15CAHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE15CAHE3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE15CAHE3/51?
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4.How is shipping managed for 1.5KE15CAHE3/51?
1.5KE15CAHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE15CAHE3/51 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 1.5KE15CAHE3/51?
For technical support, including 1.5KE15CAHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE15CAHE3/51 requirements.
6.How does Aetrix verify that 1.5KE15CAHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE15CAHE3/51 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 1.5KE15CAHE3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE15CAHE3/51?
All 1.5KE15CAHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE15CAHE3/51, 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 1.5KE15CAHE3/51 part is unused and in its original packaging.
Return procedure for 1.5KE15CAHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE15CAHE3/51 Tags
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