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Vishay General Semiconductor - Diodes Division 1.5KE15CHE3/73
- Part No.:
- 1.5KE15CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE15CHE3/73.pdf
- Description:
- TVS DIODE 12.1VWM 22VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:6,240
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Product details
Overview
1.5KE15CHE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a 15 V breakdown voltage (VBR = 14.3–15.8 V at 1 mA), 12.8 V maximum working voltage (VWM), 21.2 V clamping voltage (VC) at 70.8 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5KE15CHE3/73 datasheet, 1.5KE15CHE3/73 pinout, 1.5KE15CHE3/73 application, or 1.5KE15CHE3/73 equivalent, this part delivers verified transient suppression performance in automotive body electronics, industrial PLC I/O modules, and telecom power supply front-ends where AEC-Q101 qualification, low clamping ratio, and robust surge handling are required.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches into low-impedance conduction within <1 ns, diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable leakage (<1 µA at VWM) and repeatable breakdown behavior across temperature (-55 °C to +175 °C).
The device complies with JEDEC standard 1.5KE case style, uses matte tin-plated leads solderable per J-STD-002, and supports 200 A non-repetitive forward surge (8.3 ms half-sine). Thermal resistance is 15.4 °C/W junction-to-lead, enabling effective heat dissipation in PCB-mounted applications without heatsinking under typical surge duty cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 14.3 V / 15.8 V at 1 mA - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| VWM | 12.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 21.2 V at 70.8 A - clamping voltage during 10/1000 µs surge; limits protected circuit stress to safe margin |
| PPPM | 1500 W - peak pulse power handling capability enables protection against IEC 61000-4-5 Level 4 surges |
| IPPM | 70.8 A - maximum non-repetitive surge current supported with defined waveform and derating |
| TJ max. | +175 °C - high junction temperature rating supports operation in under-hood automotive and industrial environments |
| Package | DO-201AD (Case Style 1.5KE) - axial-leaded, epoxy-molded package rated UL 94 V-0, compatible with wave soldering |
Pinout & Package
1.5KE15CHE3/73 uses a 2-terminal DO-201AD axial package (Case Style 1.5KE), with cathode identified by a color band on the body. The device has no internal pin numbering; terminals are functionally designated as anode and cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for unidirectional clamping | Connected to ground or lower-potential rail; completes shunt path during reverse overvoltage event |
| Cathode | Protected line connection point | Connected to line being protected (e.g., 12 V supply rail); avalanche conduction occurs when cathode voltage exceeds VBR relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5 %), low leakage (<1 µA), and long-term reliability under thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-earth) in properly filtered systems |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including body control modules and infotainment power supplies |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes voltage overshoot during clamping - critical for protecting 15 V-rated ICs and gate drivers |
| UL 94 V-0 molded epoxy case | Provides flame-retardant mechanical encapsulation suitable for safety-critical industrial and automotive assemblies |
Applications
| Automotive Body Electronics | Industrial PLC Digital I/O |
|---|---|
Use Scenario: Protecting LIN bus transceivers and door module microcontrollers from load dump and alternator ripple. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed at power input of 12 V subsystems to clamp surges before they reach LDOs and MCUs. Use Value: Prevents latch-up and permanent damage in automotive-grade MCUs by limiting transient voltage to ≤21.2 V during 70.8 A events. |
Use Scenario: Safeguarding 24 V digital input channels against field-wiring induced surges in factory automation controllers. IC Role / Device Role / Timing Role: Primary protection element mounted directly at terminal block entry, upstream of optocoupler input stages. Use Value: Enables >100,000 surge cycles without degradation due to stable glass-passivated junction and 175 °C TJ rating. |
| Telecom Power Supply Input | Consumer Appliance Motor Drive |
Use Scenario: Front-end protection for AC/DC adapters and PoE injectors exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage clamping device on DC output rail, coordinated with MOVs and common-mode chokes. Use Value: Sub-nanosecond response time ensures clamping initiates before secondary protection elements react, reducing overall let-through energy. |
Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in smart home appliances (e.g., vacuum cleaners, blenders). IC Role / Device Role / Timing Role: Unidirectional TVS connected across motor terminals to absorb inductive kickback during PWM commutation. Use Value: Withstands repetitive 200 A forward surge (8.3 ms) without parameter shift, ensuring long service life in high-duty-cycle applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A | DO-214AA package (SMB), 600 W PPPM, same VBR range but lower surge rating (32.4 A) | Better suited for space-constrained PCB layouts; not AEC-Q101 qualified in standard grade | Select SMBJ15A only if board area is constrained and surge threat level is ≤IEC 61000-4-5 Level 3. |
| 1.5KE15A-E3/54 | Same DO-201AD package and electrical specs, but commercial-grade (non-AEC-Q101) and RoHS-compliant E3 suffix only | Lacks automotive qualification; suitable for consumer and industrial non-automotive use | Choose 1.5KE15A-E3/54 for cost-sensitive non-automotive designs where AEC-Q101 is not mandated. |
Compared with SMBJ15A and 1.5KE15A-E3/54, the 1.5KE15CHE3/73 uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and DO-201AD mechanical robustness - making it the preferred choice for automotive and high-reliability industrial deployments requiring validated long-term surge endurance.
Availability
1.5KE15CHE3/73 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O protection, and telecom power supply input stages requiring stable component supply, traceable sourcing, and lifecycle continuity.
Supply support for 1.5KE15CHE3/73 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, precision, and automotive-grade validation.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure resilience and consistent clamping performance are non-negotiable.
FAQ
What is the breakdown voltage tolerance for 1.5KE15CHE3/73?
The 1.5KE15CHE3/73 has a specified breakdown voltage range of 14.3 V to 15.8 V at 1 mA test current, corresponding to a ±5 % tolerance around the nominal 15 V rating. This tight tolerance ensures predictable clamping onset across production lots and temperature extremes, critical for protecting 15 V-rated components without premature conduction.
Is 1.5KE15CHE3/73 AEC-Q101 qualified?
Yes, the "HE3" suffix in 1.5KE15CHE3/73 explicitly denotes AEC-Q101 qualification per Vishay's ordering nomenclature. This certification covers stress testing for temperature cycling, humidity bias, high-temperature operating life, and surge robustness - confirming suitability for automotive under-hood and cabin applications.
What is the maximum clamping voltage of 1.5KE15CHE3/73 under surge conditions?
The maximum clamping voltage (VC) of 1.5KE15CHE3/73 is 21.2 V at 70.8 A peak pulse current with a 10/1000 µs waveform. This value represents the upper limit of voltage seen by downstream circuitry during worst-case surge events, enabling system designers to verify margin against component absolute maximum ratings.
Can 1.5KE15CHE3/73 be used in bidirectional configurations?
No, 1.5KE15CHE3/73 is a unidirectional TVS diode, indicated by the "A" suffix (not "CA"). Bidirectional variants such as 1.5KE15CA exist but differ in construction and polarity marking; using 1.5KE15CHE3/73 in AC or bipolar signal paths would result in unintended forward conduction and failure.
What is the thermal resistance from junction to lead for 1.5KE15CHE3/73?
The typical thermal resistance from junction to lead (RθJL) for 1.5KE15CHE3/73 is 15.4 °C/W, measured with 0.375" (9.5 mm) lead length. This low value enables efficient heat transfer to the PCB copper pour or chassis, supporting reliable operation during repetitive surge events without requiring external heatsinking.
1.5KE15CHE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 12.1V
- Voltage - Breakdown (Min):
- 13.5V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 68.2A
- 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
1.5KE15CHE3/73 FAQ
1.How can I place an order for 1.5KE15CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE15CHE3/73 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 1.5KE15CHE3/73 reliable?
The price and inventory of 1.5KE15CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE15CHE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE15CHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE15CHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE15CHE3/73?
1.5KE15CHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE15CHE3/73 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 1.5KE15CHE3/73?
For technical support, including 1.5KE15CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE15CHE3/73 requirements.
6.How does Aetrix verify that 1.5KE15CHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE15CHE3/73 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 1.5KE15CHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE15CHE3/73?
All 1.5KE15CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE15CHE3/73, 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 1.5KE15CHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE15CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE15CHE3/73 Tags
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