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Vishay General Semiconductor - Diodes Division 1.5KE15CAHE3_B/C
- Part No.:
- 1.5KE15CAHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE15CAHE3_B/C.pdf
- Description:
- 1.5KW,15V 5%,BIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,842
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Product details
Overview
1.5KE15CAHE3_B/C from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for clamping voltage transients on power and signal lines. It features a 15 V breakdown voltage (VBR = 14.3–15.8 V at 1.0 mA), 1500 W peak pulse power (10/1000 µs), 21.2 V maximum clamping voltage at 70.8 A, and operates across –55 °C to +175 °C. It is used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the 1.5KE15CAHE3_B/C datasheet, 1.5KE15CAHE3_B/C pinout, 1.5KE15CAHE3_B/C application, or 1.5KE15CAHE3_B/C equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, clamping performance under standardized surge waveforms, and real-world use context for ESD/lightning transient protection in bidirectional AC-coupled or floating circuits.
Technical Context
This device implements a glass-passivated silicon PN junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its bidirectional structure enables symmetrical clamping in both polarities without external polarity orientation, making it suitable for AC lines, differential buses, and ungrounded interfaces.
It complies with JEDEC-standard 10/1000 µs surge testing and supports repetitive surge duty cycles up to 0.01 %. The HE3 suffix confirms RoHS compliance and AEC-Q101 qualification per note (2) in the datasheet, applying specifically to 1.5KE6.8CAHE3_B through 1.5KE220CAHE3_B variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 14.3 V / 15.8 V at 1.0 mA - defines precise voltage threshold where clamping initiates in either direction |
| VWM | 12.8 V - maximum continuous working voltage before leakage exceeds 1.0 µA; sets safe operating margin below breakdown |
| VC @ IPPM | 21.2 V at 70.8 A - clamped voltage during full 1500 W surge, determining protected circuit's worst-case overvoltage exposure |
| PPPM | 1500 W - peak pulse power handling capability using standard 10/1000 µs waveform, critical for lightning surge immunity |
| TJ max. | +175 °C - maximum junction temperature enabling operation in under-hood automotive or high-ambient industrial environments |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with 0.375" lead length, UL 94 V-0 rated epoxy body |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per AEC specification |
Pinout & Package
1.5KE15CAHE3_B/C uses the standard DO-201AD (Case Style 1.5KE) axial package with two unmarked leads. As a bidirectional TVS, it has no polarity marking; either lead may connect to either side of the protected line.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path terminal | Both terminals function identically; conducts surge current bidirectionally when voltage exceeds ±14.3 V |
| Leads (matte tin plated) | PCB interface and thermal path | Solderable per J-STD-002; provides primary heat dissipation path to PCB copper; RθJL = 15.4 °C/W |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance and long-term reliability under repeated surge stress without parameter drift |
| 1500 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial and automotive front-end protection |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control modules, body electronics, and ADAS sensor interfaces |
| Clamping response time < 1 ns | Protects downstream ICs before voltage overshoot damages gate oxides or input structures of MOSFETs and microcontrollers |
| UL 94 V-0 molded epoxy case | Provides flame-retardant mechanical encapsulation required for safety-critical systems in automotive and industrial equipment |
Applications
| Automotive Sensor Interface Protection | Industrial RS-485 Bus Protection |
|---|---|
Use Scenario: Protecting CAN/LIN transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential signal pair or supply rail to shunt transient energy before it reaches sensitive analog front-ends. Use Value: Maintains signal integrity by limiting voltage excursions to ≤21.2 V during 1500 W surges, preventing latch-up or permanent damage to 3.3 V/5 V sensor ICs. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs against induced lightning surges on long cable runs. IC Role / Device Role / Timing Role: Line-to-line and line-to-ground TVS on A/B bus lines, operating symmetrically to suppress common-mode and differential-mode transients. Use Value: Enables robust communication up to 1200 m cable length by clamping 10/1000 µs surges to 21.2 V while maintaining <1 µA leakage at 12.8 V operating voltage. |
| Consumer Appliance Motor Drive Protection | Telecom DSL Line Surge Suppression |
Use Scenario: Shielding microcontroller GPIOs and gate drivers from inductive kickback generated by brushed DC motors in washing machines or HVAC blowers. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp across motor coil terminals or driver outputs to absorb stored inductive energy. Use Value: Prevents MCU reset or I/O latch-up by limiting transient voltage to 21.2 V within nanoseconds, supporting continuous operation under frequent switching cycles. |
Use Scenario: Protecting ADSL/VDSL line interface ICs from lightning-induced surges entering via telephone line entry points in residential gateways. IC Role / Device Role / Timing Role: Primary protection device on tip/ring lines before secondary filtering and transformer coupling, rated for telecom-grade surge standards. Use Value: Survives multiple 10/1000 µs surges up to 1500 W without degradation, ensuring service continuity and reducing field failure rates in outdoor-installed equipment. |
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 | DO-214AA package (SMB), lower 600 W PPPM, same 15 V VBR range and bidirectional configuration | Lower power rating limits use to sub-IEC 61000-4-5 Level 3 environments; better suited for space-constrained PCBs | Select SMBJ15CA only when board area is constrained and surge threat level is ≤600 W; not drop-in for 1.5KE15CAHE3_B/C's 1500 W requirement |
| 1.5SMC15CA | Surface-mount SMC package, identical 1500 W rating and 14.3–15.8 V VBR, but higher thermal resistance (RθJA ≈ 100 °C/W vs. 75 °C/W) | Requires larger copper pour for thermal management; unsuitable for high-temperature ambient without layout adjustment | Choose 1.5SMC15CA only when automated SMT assembly is mandatory and thermal design accommodates reduced power derating above 25 °C |
Compared with SMBJ15CA and 1.5SMC15CA, the 1.5KE15CAHE3_B/C delivers superior thermal performance in axial-leaded form factor and full 1500 W surge capability-making it the preferred choice for high-reliability automotive and industrial applications where leaded mounting and proven AEC-Q101 qualification are required.
Availability
1.5KE15CAHE3_B/C is available at Aetrix Electronics and suitable for automotive ECU design, industrial RS-485 infrastructure, and consumer appliance motor control requiring stable component supply with AEC-Q101 traceability and long-lifecycle support.
Supply support for 1.5KE15CAHE3_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, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where robustness against lightning, ESD, and inductive switching surges is mission-critical.
FAQ
What does the "CA" suffix mean in 1.5KE15CAHE3_B/C?
The "CA" suffix in 1.5KE15CAHE3_B/C denotes a bidirectional Transient Voltage Suppressor. Unlike unidirectional types (e.g., 1.5KE15A), the CA variant provides symmetrical clamping in both voltage polarities-essential for protecting AC-coupled lines, differential buses, or floating circuits where polarity reversal may occur. This is confirmed in the Vishay datasheet section "DEVICES FOR BIDIRECTION APPLICATIONS".
Is 1.5KE15CAHE3_B/C AEC-Q101 qualified?
Yes, 1.5KE15CAHE3_B/C is AEC-Q101 qualified. The HE3 suffix explicitly indicates RoHS compliance and AEC-Q101 qualification, as stated in Note (2) on page 3 of the Vishay document 88301: "Applied for 1.5KE6.8AHE3_B to 1.5KE220AHE3_B, and 1.5KE6.8CAHE3_B to 1.5KE220CAHE3_B". This qualification covers temperature cycling, high-temperature reverse bias, and surge endurance testing required for automotive use.
What is the maximum clamping voltage of 1.5KE15CAHE3_B/C under surge conditions?
The maximum clamping voltage (VC) of 1.5KE15CAHE3_B/C is 21.2 V at a peak pulse current (IPPM) of 70.8 A, measured using the standard 10/1000 µs waveform. This value is specified in the Electrical Characteristics table on page 2 of the Vishay datasheet (document 88301) under the row for 1.5KE15A/1N6275A, which applies identically to the CA variant per the family-wide parameter definitions.
Can 1.5KE15CAHE3_B/C be used in place of a unidirectional TVS like 1.5KE15A?
No-1.5KE15CAHE3_B/C cannot directly replace 1.5KE15A in unidirectional applications because their conduction behavior differs fundamentally. The 1.5KE15A clamps only in reverse bias and blocks forward current beyond ~3.5 V, whereas 1.5KE15CAHE3_B/C clamps symmetrically in both directions. Substitution requires verifying that the circuit is truly bidirectional and that forward conduction during normal operation will not disrupt system functionality.
What is the standoff voltage (VWM) of 1.5KE15CAHE3_B/C, and why does it matter?
The standoff voltage (VWM) of 1.5KE15CAHE3_B/C is 12.8 V-the maximum continuous DC or RMS voltage the device can withstand without exceeding 1.0 µA leakage current. This parameter ensures reliable operation below the breakdown threshold during normal circuit operation, preventing unnecessary power loss or false triggering. It establishes a 1.5 V design margin below the minimum VBR of 14.3 V, aligning with industry best practices for TVS selection.
1.5KE15CAHE3_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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 74A
- 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
1.5KE15CAHE3_B/C FAQ
1.How can I place an order for 1.5KE15CAHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE15CAHE3_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 1.5KE15CAHE3_B/C reliable?
The price and inventory of 1.5KE15CAHE3_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 1.5KE15CAHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE15CAHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE15CAHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE15CAHE3_B/C?
1.5KE15CAHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE15CAHE3_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 1.5KE15CAHE3_B/C?
For technical support, including 1.5KE15CAHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE15CAHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE15CAHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE15CAHE3_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 1.5KE15CAHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE15CAHE3_B/C?
All 1.5KE15CAHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE15CAHE3_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 1.5KE15CAHE3_B/C part is unused and in its original packaging.
Return procedure for 1.5KE15CAHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE15CAHE3_B/C Tags
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