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Vishay General Semiconductor - Diodes Division 1.5KE24C-E3/54
- Part No.:
- 1.5KE24C-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE24C-E3/54.pdf
- Description:
- TVS DIODE 19.4VWM 34.7VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,720
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Product details
Overview
1.5KE24C-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for clamping voltage transients on signal and power lines. It features a 24 V breakdown voltage (VBR = 22.8–25.2 V at 1 mA), 1500 W peak pulse power (10/1000 µs), 33.2 V maximum clamping voltage at rated IPPM, and operates from –55 °C to +175 °C. It protects MOSFETs, ICs, and sensor interfaces in industrial power supplies and automotive control units.
For engineers reviewing the 1.5KE24C-E3/54 datasheet, 1.5KE24C-E3/54 pinout, 1.5KE24C-E3/54 application, or 1.5KE24C-E3/54 equivalent, this page delivers verified electrical specs, JEDEC 1.5KE package details, bidirectional clamping behavior, thermal derating curves, and AEC-Q101-qualified alternatives - all critical for surge protection layout and reliability validation.
Technical Context
The 1.5KE24C-E3/54 implements a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its bidirectional architecture enables symmetrical clamping across both polarities without external polarity management, supporting AC-coupled lines and differential buses.
It complies with UL 497B (QVGQ2 recognition) and meets JESD 22-B106 solderability (275 °C, 10 s). The device sustains 200 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits a temperature coefficient of VBR at +0.094 %/°C - enabling stable clamping over wide ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.8 V / 25.2 V at 1 mA - defines reliable conduction onset under surge conditions |
| VWM | 20.5 V - maximum continuous reverse working voltage before leakage exceeds 1 μA |
| VC @ IPPM | 33.2 V - clamped voltage during full 1500 W transient, limiting downstream stress |
| PPPM | 1500 W - peak pulse power handling per 10/1000 µs waveform, critical for lightning/inductive spike immunity |
| IPPM | 45.2 A - peak pulse current corresponding to VC, used for PCB trace sizing and fuse coordination |
| TJ max | +175 °C - enables operation in under-hood automotive or high-temperature industrial enclosures |
| Package | DO-201AD (Case Style 1.5KE) - industry-standard axial leaded package with 0.375" lead length, UL 94 V-0 compliant epoxy |
Pinout & Package
1.5KE24C-E3/54 uses a two-terminal DO-201AD (Case Style 1.5KE) package with no polarity marking - consistent with its bidirectional function. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, and qualified to JESD 201 Class 1A whisker test (E3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient clamp node | Either terminal serves as input/output; no cathode band - simplifies placement on AC or differential lines |
| Leads (axial) | Thermal and current path | 0.375" (9.5 mm) lead length supports ≥15.4 °C/W junction-to-lead thermal resistance; requires minimum 0.042" diameter pad clearance |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables <1 ns response time and stable VBR over 1000+ surge cycles without parameter drift |
| 1500 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 Level 4 (4 kV line-to-line) when combined with appropriate series impedance |
| UL 497B recognized (QVGQ2) | Validates suitability for telecom and industrial signal line protection without additional agency certification |
| AEC-Q101 qualified variants available | HE3 suffix versions (e.g., 1.5KE24CAHE3_B) support automotive body electronics requiring qualification evidence |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance and RoHS Directive 2011/65/EU for commercial-grade deployment |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and feedback sensors against inductive kickback from 24 V solenoid coils and BLDC motor phases. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across power rails and signal inputs to limit transients to ≤33.2 V within nanoseconds. Use Value: Prevents latch-up and oxide rupture in 3.3 V/5 V microcontrollers and isolated gate drivers during load dump events. | Use Scenario: Shielding LIN bus transceivers and door module MCUs from battery line transients and ESD coupling. IC Role / Device Role / Timing Role: Primary TVS on 12 V supply rail and bidirectional data lines, absorbing >1500 W surges without degradation. Use Value: Maintains communication integrity during ISO 7637-2 Pulse 1/2a/5a tests and eliminates field returns due to CAN/LIN bus lockup. |
| Telecom Power Feeds | Consumer Appliance Control Boards |
Use Scenario: Surge suppression on -48 V DC PSE outputs feeding remote PHYs and PoE splitters in outdoor cabinets. IC Role / Device Role / Timing Role: Standoff-rated protector (VWM = 20.5 V) deployed upstream of DC-DC converters to prevent overvoltage propagation. Use Value: Clamps lightning-induced surges to safe levels while sustaining <1 μA leakage at nominal voltage - minimizing standby power loss. | Use Scenario: Safeguarding touch controller ICs and relay drivers in washing machine mainboards exposed to mains-borne noise. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) bidirectional clamp on 5 V logic rails and front-panel interfaces. Use Value: Blocks 8/20 µs surges up to 45.2 A without affecting signal rise time or causing false touch detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA | DO-214AA package (smaller footprint), 600 W PPPM, same VBR/VC range | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 | Select when board space is constrained and surge threat level is ≤1 kV line-to-line |
| 1.5KE24CAHE3_B | Identical electrical specs; AEC-Q101 qualified, HE3 whisker rating (Class 2), B revision code | Required for automotive production; supports PPAP documentation and long-term reliability reporting | Choose for OEM automotive programs where qualification evidence and extended lifecycle tracking are mandatory |
Compared with 1.5KE24C-E3/54, SMBJ24CA trades peak power for compactness, while 1.5KE24CAHE3_B adds automotive qualification without altering clamping performance - enabling direct substitution only where AEC-Q101 compliance is contractually required.
Availability
1.5KE24C-E3/54 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power feeds, and consumer appliance control boards requiring stable component supply and UL-recognized surge protection.
Supply support for 1.5KE24C-E3/54 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, and protection devices with emphasis on reliability and standardization.
The 1.5KE family was engineered for high-energy transient suppression in harsh environments - targeting industrial automation, transportation, and infrastructure systems where failure modes must be mitigated without adding complexity.
FAQ
What is the clamping voltage of the 1.5KE24C-E3/54 under maximum rated surge current?
The 1.5KE24C-E3/54 clamps to 33.2 V when subjected to its peak pulse current (IPPM) of 45.2 A, measured using the standardized 10/1000 µs waveform. This value is guaranteed across the operating temperature range and forms the basis for downstream circuit voltage margining. Designers must ensure that all protected components have absolute maximum ratings exceeding 33.2 V to avoid damage during surge events. The 1.5KE24C-E3/54 achieves this clamping with minimal overshoot due to its sub-nanosecond response time.
Is the 1.5KE24C-E3/54 suitable for automotive applications?
The 1.5KE24C-E3/54 itself is a commercial-grade part and not AEC-Q101 qualified. However, Vishay offers the functionally identical 1.5KE24CAHE3_B variant - which shares the same VBR, VC, and PPPM - with full AEC-Q101 qualification, JESD 201 Class 2 whisker resistance, and documented PPAP support. For automotive production, specify 1.5KE24CAHE3_B instead of 1.5KE24C-E3/54 to meet OEM requirements. The 1.5KE24C-E3/54 remains valid for prototyping and non-automotive use cases.
How does the bidirectional design of the 1.5KE24C-E3/54 affect PCB layout?
The 1.5KE24C-E3/54 has no polarity marking and functions identically in either orientation, eliminating orientation checks during automated assembly and simplifying routing on AC-coupled or differential signal paths. Unlike unidirectional TVS diodes, it requires no anode/cathode alignment - reducing placement errors and enabling symmetric placement across balanced lines like RS-485 or LIN bus pairs. Its DO-201AD package mandates 0.375" lead length for thermal performance, so PCB pads must accommodate axial leads with ≥1.5 mm creepage distance to adjacent traces. The 1.5KE24C-E3/54 thus streamlines layout while maintaining robust surge immunity.
What is the maximum operating temperature for the 1.5KE24C-E3/54?
The 1.5KE24C-E3/54 has a specified junction temperature range of –55 °C to +175 °C, allowing uninterrupted operation in high-ambient environments such as engine compartments, industrial inverters, and enclosed power supplies. Derating begins above 25 °C ambient, with power dissipation falling linearly to zero at +175 °C per the manufacturer's thermal curve (Fig. 5). At +125 °C ambient, the device retains ~60 % of its 6.5 W steady-state power rating. This wide thermal envelope makes the 1.5KE24C-E3/54 suitable for applications where thermal management is limited, and underscores why it is widely deployed in under-hood automotive and factory-floor equipment.
Does the 1.5KE24C-E3/54 meet UL safety standards?
Yes, the 1.5KE24C-E3/54 is Underwriters Laboratories (UL) recognized under standard UL 497B for protectors, with file number E136766. This applies to both unidirectional and bidirectional variants in the 1.5KE family. UL 497B certification validates its suitability for primary and secondary circuit protection in telecom, industrial, and consumer equipment - confirming dielectric strength, flammability (UL 94 V-0 epoxy), and surge endurance. The recognition covers the entire 1.5KE6.8A–1.5KE220CA range, including the 1.5KE24C-E3/54, and eliminates the need for end-product retesting when used per datasheet guidelines.
1.5KE24C-E3/54 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):
- 19.4V
- Voltage - Breakdown (Min):
- 21.6V
- Voltage - Clamping (Max) @ Ipp:
- 34.7V
- Current - Peak Pulse (10/1000µs):
- 43.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE24C-E3/54 FAQ
1.How can I place an order for 1.5KE24C-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE24C-E3/54 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 1.5KE24C-E3/54 reliable?
The price and inventory of 1.5KE24C-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE24C-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE24C-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE24C-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE24C-E3/54?
1.5KE24C-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE24C-E3/54 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 1.5KE24C-E3/54?
For technical support, including 1.5KE24C-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE24C-E3/54 requirements.
6.How does Aetrix verify that 1.5KE24C-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE24C-E3/54 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 1.5KE24C-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE24C-E3/54?
All 1.5KE24C-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE24C-E3/54, 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 1.5KE24C-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE24C-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE24C-E3/54 Tags
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