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Vishay General Semiconductor - Diodes Division 1.5KE30CA-E3/54
- Part No.:
- 1.5KE30CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE30CA-E3/54.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,446
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Product details
Overview
1.5KE30CA-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 30 V breakdown voltage (VBR = 28.5–31.5 V at 1.0 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 41.4 V at 36.2 A, and operates across –55 °C to +175 °C junction temperature. It is used in automotive sensor interfaces, industrial I/O protection, and telecom line surge suppression.
For engineers reviewing the 1.5KE30CA-E3/54 datasheet, 1.5KE30CA-E3/54 pinout, 1.5KE30CA-E3/54 application, or 1.5KE30CA-E3/54 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, bidirectional clamping behavior, thermal derating curves, and RoHS-compliant commercial-grade sourcing support - all critical for ESD/lightning transient design validation.
Technical Context
This device implements a glass-passivated silicon p-n junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its bidirectional architecture enables symmetrical clamping in both polarities without polarity marking, supporting AC-coupled or floating-line protection schemes.
Rated for 1500 W peak pulse power under 10/1000 µs waveform with 0.01% duty cycle, it sustains repetitive surges while maintaining stable VC and low leakage (<1 µA at 25.6 V). Thermal resistance is 75 °C/W (junction-to-ambient) and 15.4 °C/W (junction-to-lead), enabling reliable operation up to TJ = 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 28.5 V / 31.5 V at 1.0 mA - defines precise clamping onset threshold for bidirectional transients |
| VWM | 25.6 V - maximum continuous working voltage before leakage exceeds 1 µA |
| VC @ IPPM | 41.4 V at 36.2 A - actual clamped voltage during full 1500 W surge, limiting downstream stress |
| PPPM | 1500 W - peak transient energy absorption capability per 10/1000 µs pulse |
| TJ range | –55 °C to +175 °C - supports under-hood automotive, industrial control, and outdoor telecom environments |
| Package | JEDEC 1.5KE - axial-leaded, epoxy-molded case rated UL 94 V-0, compatible with wave/solder-reflow |
| RoHS status | E3 suffix - RoHS-compliant, JESD 201 Class 1A whisker-tested matte tin leads |
Pinout & Package
1.5KE30CA-E3/54 uses the standard JEDEC 1.5KE axial package: molded epoxy body with matte tin-plated leads, 0.375" (9.5 mm) lead length, and no polarity marking (bidirectional configuration). Leads are solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional terminal pair | Identical clamping behavior in either direction; no cathode band - installed without orientation constraint |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5%) and long-term reliability under thermal cycling |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 (4 kV) surges without degradation when properly mounted |
| Clamping response time <1 ns | Protects sensitive ICs (e.g., CAN transceivers, ADC inputs) before transient energy couples into traces |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., EFT bursts, inductive switch-off) |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for industrial and transportation end equipment |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector entry point to clamp ±30 V transients before reaching op-amp input stages. Use Value: Maintains signal integrity by limiting clamped voltage to 41.4 V while absorbing 1500 W surges - preventing latch-up or gate oxide damage in downstream ASICs. |
Use Scenario: Shielding 24 V DC digital input channels in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 25.6 V) placed across input terminals to shunt transients exceeding system rail. Use Value: Enables >100,000 surge cycles without parameter shift due to glass-passivated junction stability and 175 °C TJ rating. |
| Telecom Line Interface | Consumer Power Adapter EMI Filtering |
Use Scenario: Secondary-side surge protection on POTS or DSL line interface circuits exposed to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Bidirectional clamping element across differential pair to suppress mode conversion events without DC bias dependency. Use Value: Symmetrical VBR (28.5–31.5 V) ensures identical protection in both signal polarities - critical for AC-coupled telecom signals. |
Use Scenario: Input-stage transient suppression in wall-mounted AC/DC adapters subjected to mains-borne surges (IEC 61000-4-5). IC Role / Device Role / Timing Role: Primary-side TVS across bridge rectifier output to clamp switching spikes and external surges before bulk capacitor. Use Value: 1500 W rating handles repetitive 10/1000 µs surges without thermal runaway - validated for 0.01% duty cycle per JEDEC test conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30CA | Lower PPPM (600 W), SMC package (surface-mount), lower VC (48.4 V @ 12.3 A) | Preferred for space-constrained PCBs; unsuitable for 1500 W surge requirements | Select only if board layout mandates SMD and surge energy is ≤600 W |
| 1.5KE33CA | Higher VBR (31.4–34.7 V), higher VWM (28.2 V), same package and PPPM | Used where system operating voltage margin requires ≥28.2 V standoff | Drop-in replacement if design allows +3 V higher clamping and standoff |
Compared with 1.5KE30CA-E3/54, SMBJ30CA trades surge capacity for footprint reduction, while 1.5KE33CA offers tighter VWM/VBR margin at identical form factor - making the latter a direct upgrade path for higher-voltage rails without layout change.
Availability
1.5KE30CA-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line surge suppression requiring stable component supply, RoHS compliance, and traceable sourcing.
Supply support for 1.5KE30CA-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 high-reliability diodes, MOSFETs, and passive components for demanding industrial, automotive, and computing applications.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - delivering consistent 1500 W clamping performance with extended temperature range and AEC-Q101 qualification options.
FAQ
What is the breakdown voltage tolerance for 1.5KE30CA-E3/54?
The 1.5KE30CA-E3/54 has a specified breakdown voltage range of 28.5 V to 31.5 V at 1.0 mA test current, representing a ±5% tolerance around the nominal 30 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes, critical for protecting 24 V industrial systems where overvoltage margins are constrained. The value is measured per JEDEC standards and confirmed in Vishay's 88301 datasheet revision 09-Aug-2022.
Is 1.5KE30CA-E3/54 suitable for automotive applications?
Yes, 1.5KE30CA-E3/54 is widely deployed in automotive subsystems including body control modules, sensor interfaces, and infotainment power supplies. While the E3 suffix denotes commercial-grade qualification, its –55 °C to +175 °C operating range, glass-passivated junction, and 1500 W surge rating meet core requirements for under-hood and cabin applications. For AEC-Q101 qualified versions, refer to the HE3 suffix variants (e.g., 1.5KE30CAHE3_B), which undergo additional stress testing per automotive reliability standards.
How does the clamping voltage of 1.5KE30CA-E3/54 compare to its breakdown voltage?
The 1.5KE30CA-E3/54 clamps at 41.4 V when subjected to its maximum rated surge current of 36.2 A (10/1000 µs waveform), which is approximately 38% above its minimum breakdown voltage of 28.5 V. This VC–VBR margin reflects the device's low incremental surge resistance and ensures protected circuitry sees limited overvoltage during worst-case transients - a key design parameter for safeguarding 3.3 V or 5 V logic interfaces downstream of the TVS.
What is the meaning of the "CA" suffix in 1.5KE30CA-E3/54?
The "CA" suffix in 1.5KE30CA-E3/54 explicitly denotes a bidirectional configuration: the device provides symmetrical transient suppression in both forward and reverse directions, with identical VBR, VWM, and VC characteristics across polarity. Unlike unidirectional "A" variants (e.g., 1.5KE30A), the CA version has no cathode marking and is installed without orientation - essential for AC signal lines, differential buses, or floating grounds where polarity cannot be guaranteed.
Can 1.5KE30CA-E3/54 be used in parallel for higher surge handling?
Yes, multiple 1.5KE30CA-E3/54 devices can be paralleled to increase total peak pulse power capacity, but only with careful attention to layout symmetry. Identical trace lengths, thermal coupling, and shared ground paths are required to ensure balanced current sharing during transients. Vishay's application notes confirm this technique for scaling beyond 1500 W, though mismatched parasitics may cause uneven stress - verification via surge testing with calibrated 10/1000 µs pulses is strongly recommended before production deployment of 1.5KE30CA-E3/54 parallel arrays.
1.5KE30CA-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 36.2A
- 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
1.5KE30CA-E3/54 FAQ
1.How can I place an order for 1.5KE30CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE30CA-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 1.5KE30CA-E3/54 reliable?
The price and inventory of 1.5KE30CA-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 1.5KE30CA-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE30CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE30CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE30CA-E3/54?
1.5KE30CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE30CA-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 1.5KE30CA-E3/54?
For technical support, including 1.5KE30CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE30CA-E3/54 requirements.
6.How does Aetrix verify that 1.5KE30CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE30CA-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 1.5KE30CA-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE30CA-E3/54?
All 1.5KE30CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE30CA-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 1.5KE30CA-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE30CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE30CA-E3/54 Tags
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