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Vishay General Semiconductor - Diodes Division 1.5KE15CHE3/54
- Part No.:
- 1.5KE15CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE15CHE3/54.pdf
- Description:
- TVS DIODE 12.1VWM 22VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:7,983
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Product details
Overview
1.5KE15CHE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary 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 standoff 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 1.5KE15CHE3/54 datasheet, 1.5KE15CHE3/54 pinout, 1.5KE15CHE3/54 application, or 1.5KE15CHE3/54 equivalent, this part delivers verified surge immunity for automotive power supply inputs, industrial I/O protection, and telecom line interface circuits where fast clamping (<1 ns), low incremental resistance, and AEC-Q101 qualification (HE3 suffix) are required.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (≤1 µA leakage at 12.8 V), then avalanches sharply at VBR to clamp transient energy within nanoseconds. Its glass-passivated junction ensures stable breakdown characteristics and low capacitance (<100 pF typical), while the molded epoxy case meets UL 94 V-0 flammability rating.
The 1.5KE15CHE3/54 is rated for 175 °C maximum junction temperature and derates linearly above 25 °C ambient; thermal resistance is 75 °C/W (junction-to-ambient) and 15.4 °C/W (junction-to-lead), enabling reliable operation on PCBs without heatsinks for short-duration transients up to 1500 W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 14.3 V / 15.8 V at 1 mA - defines precise avalanche onset threshold for repeatable clamping behavior |
| VWM | 12.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 21.2 V at 70.8 A - clamped voltage during 10/1000 µs surge, limiting stress on downstream components |
| PPPM | 1500 W - peak transient power handling capability, sufficient for IEC 61000-4-5 Level 4 surges |
| IFSM | 200 A (8.3 ms half-sine) - surge current rating for unidirectional forward conduction during fault events |
| TJ max | 175 °C - enables use in under-hood automotive and high-temperature industrial environments |
| Package | DO-201AD (Case Style 1.5KE) - axial-leaded, through-hole package with 0.375" lead length, RoHS-compliant matte tin plating |
Pinout & Package
Package: DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body meeting UL 94 V-0. Cathode indicated by color band on one end; leads are matte tin plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance reference in unidirectional configuration |
| Cathode | Clamping node / protected line connection | Connected to line being protected (e.g., +12 V rail); color-banded end |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, low-noise breakdown voltage with minimal parameter drift over time and temperature |
| 1500 W peak pulse power (10/1000 µs) | Provides robust protection against severe transients including ISO 7637-2 Pulse 5a and IEC 61000-4-5 combination wave surges |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control units, body electronics, and ADAS power supplies |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes voltage overshoot during clamping, reducing risk of damage to 15 V-rated ICs and MOSFETs |
| UL 94 V-0 compliant molding compound | Meets flame-retardancy requirements for safety-critical industrial and transportation equipment |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients in passenger vehicles. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between power rail and chassis ground, clamping within <1 ns. Use Value: Limits voltage to ≤21.2 V during 70.8 A surges, preventing latch-up or gate oxide rupture in MCU power domains. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC analog input modules. IC Role / Device Role / Timing Role: Unidirectional TVS mounted at sensor connector to absorb ESD and cable-coupled noise. Use Value: Maintains signal integrity with <1 µA leakage at 12.8 V, ensuring sub-0.1% measurement error in 4–20 mA loops. |
| Telecom DC Power Feeds | Consumer Device USB Port Protection |
Use Scenario: Overvoltage protection on -48 V DC distribution lines feeding remote radio units in cellular base stations. IC Role / Device Role / Timing Role: Reverse-connected unidirectional TVS referenced to negative rail, clamping positive-going surges. Use Value: Withstands repetitive 1500 W pulses at 0.01% duty cycle, supporting long-term reliability in outdoor telecom enclosures. | Use Scenario: Secondary-level surge suppression on VBUS line of USB 2.0 host ports in smart home hubs. IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of USB switch IC to limit transient energy entering SoC. Use Value: Clamps 8/20 µs surges to 21.2 V before they reach 5.5 V-tolerant USB PHY, meeting IEC 61000-4-2 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A | DO-214AA package (SMB), lower PPPM = 600 W, VC = 24.4 V @ 24.5 A | Surface-mount alternative for space-constrained designs; not AEC-Q101 qualified in standard grade | Select when board area is limited and surge severity is moderate (IEC 61000-4-5 Level 2) |
| 1.5KE15A-E3/54 | Same DO-201AD package and electrical specs, but commercial-grade (non-AEC-Q101) | Lacks automotive qualification; suitable for industrial/commercial power supplies without automotive lifecycle requirements | Choose for cost-sensitive non-automotive applications where AEC-Q101 is not mandated |
Compared with SMBJ15A and 1.5KE15A-E3/54, the 1.5KE15CHE3/54 uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and through-hole mechanical robustness - making it the preferred choice for automotive front-end protection where vibration resistance and long-term reliability are critical.
Availability
1.5KE15CHE3/54 is available at Aetrix Electronics and suitable for automotive power systems, industrial sensor interfaces, telecom DC feeds, and consumer USB port protection requiring stable component supply across extended production lifecycles.
Supply support for 1.5KE15CHE3/54 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, ruggedness, and automotive-grade validation.
The 1.5KE series was developed specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure applications where failure tolerance and long-term parametric stability are mandatory.
FAQ
What is the breakdown voltage tolerance for 1.5KE15CHE3/54?
The 1.5KE15CHE3/54 has a specified breakdown voltage range of 14.3 V to 15.8 V at 1 mA test current, corresponding to ±5% tolerance around the nominal 15 V rating. This tight VBR window ensures consistent clamping behavior across production lots and supports predictable system-level surge margin calculations in designs using the 1.5KE15CHE3/54.
Is 1.5KE15CHE3/54 suitable for bidirectional transient protection?
No, the 1.5KE15CHE3/54 is a unidirectional TVS diode - its cathode band indicates polarity, and it conducts only in reverse breakdown. For bidirectional protection, Vishay offers the 1.5KE15CA variant. Using the 1.5KE15CHE3/54 in AC or floating-line applications without proper polarity alignment will result in improper clamping or forward conduction failure.
Does 1.5KE15CHE3/54 meet automotive qualification standards?
Yes, the HE3 suffix in 1.5KE15CHE3/54 denotes AEC-Q101 qualification, verified per stress tests including HTRB, HTGB, TCT, and UHAST. This makes the 1.5KE15CHE3/54 suitable for automotive powertrain, body control, and infotainment systems where component reliability under thermal cycling and humidity is strictly enforced.
What is the maximum allowable mounting temperature for 1.5KE15CHE3/54 during reflow or hand soldering?
The 1.5KE15CHE3/54 uses matte tin-plated leads qualified for solder dip at 275 °C maximum for 10 seconds (per JESD 22-B106). For wave or hand soldering, peak temperature must not exceed 275 °C at the lead-to-body interface. Exceeding this risks epoxy cracking or junction degradation, compromising the 1.5KE15CHE3/54's surge performance and long-term reliability.
How does the clamping voltage of 1.5KE15CHE3/54 compare to its breakdown voltage?
The 1.5KE15CHE3/54 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 1.43. This low ratio reflects efficient energy diversion and minimal voltage overshoot - critical for protecting 15 V-rated components without overdesigning downstream voltage margins in systems using the 1.5KE15CHE3/54.
1.5KE15CHE3/54 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):
- 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
1.5KE15CHE3/54 FAQ
1.How can I place an order for 1.5KE15CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE15CHE3/54 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 1.5KE15CHE3/54 reliable?
The price and inventory of 1.5KE15CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE15CHE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE15CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE15CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE15CHE3/54?
1.5KE15CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE15CHE3/54 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 1.5KE15CHE3/54?
For technical support, including 1.5KE15CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE15CHE3/54 requirements.
6.How does Aetrix verify that 1.5KE15CHE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE15CHE3/54 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 1.5KE15CHE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE15CHE3/54?
All 1.5KE15CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE15CHE3/54, 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 1.5KE15CHE3/54 part is unused and in its original packaging.
Return procedure for 1.5KE15CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE15CHE3/54 Tags
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