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Vishay General Semiconductor - Diodes Division 1.5KE30C-E3/54
- Part No.:
- 1.5KE30C-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE30C-E3/54.pdf
- Description:
- TVS DIODE 24.3VWM 43.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,198
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Product details
Overview
1.5KE30C-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in signal and power 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 protects MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching surges.
For engineers reviewing the 1.5KE30C-E3/54 datasheet, 1.5KE30C-E3/54 pinout, 1.5KE30C-E3/54 application, or 1.5KE30C-E3/54 equivalent, this device delivers verified bidirectional clamping performance, UL 94 V-0 molded epoxy packaging, RoHS-compliant matte tin leads, and JESD 201 Class 1A whisker resistance - critical for automotive, industrial, and telecom surge protection design.
Technical Context
The 1.5KE30C-E3/54 implements a glass-passivated silicon PN junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its bidirectional architecture enables symmetrical clamping in AC-coupled or floating signal paths without polarity constraints.
It complies with ANSI/IEEE C62.35 surge standards and supports repetitive 10/1000 µs waveform handling at 0.01% duty cycle. Thermal performance is characterized by RθJL = 15.4 °C/W (junction-to-lead) and derating above TA = 25 °C per Figure 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 28.5 V / 31.5 V at 1.0 mA - defines reliable conduction onset under bidirectional surge stress |
| VC @ IPPM | 41.4 V at 36.2 A - maximum clamped voltage during 1500 W transient, limiting downstream stress |
| PPPM | 1500 W (10/1000 µs) - sustains high-energy surges common in automotive load-dump or telecom lightning events |
| VWM | 25.6 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| TJ range | –55 °C to +175 °C - enables operation in under-hood automotive or industrial motor-control environments |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with 0.375" lead length, UL 94 V-0 rated epoxy body |
| Leakage @ VWM | ≤1.0 µA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
Pinout & Package
1.5KE30C-E3/54 uses the standard DO-201AD (Case Style 1.5KE) axial-leaded package with no polarity marking - consistent with bidirectional TVS construction. Leads are matte tin-plated and solderable per J-STD-002/JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional clamping node | No designated anode/cathode; either lead connects to protected line - enables placement in AC or floating paths without orientation check |
| Lead 1 / Lead 2 | Surge current path | Both leads conduct equally during positive/negative transients; thermal path optimized via 0.375" (9.5 mm) lead length for RθJL = 15.4 °C/W |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5%) and long-term reliability under thermal cycling and humidity |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 (4 kV) surges without degradation when properly heatsinked |
| Sub-nanosecond response | Clamps transients within <1 ns - faster than MOVs or GDTs, preserving signal integrity in high-speed interfaces |
| UL 94 V-0 epoxy molding | Prevents flame propagation in end equipment meeting safety-critical enclosure requirements |
| JESD 201 Class 1A whisker resistance | Eliminates tin whisker risk in high-reliability applications including automotive ECUs and industrial PLCs |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and microcontroller I/O from load-dump spikes (up to 120 V) and ISO 7637-2 pulses on 12 V battery rails. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between power rail and ground, absorbing energy before it reaches downstream regulators or communication ICs. Use Value: Limits transient voltage to ≤41.4 V, preventing latch-up or gate oxide damage in 3.3 V/5 V logic while surviving repeated 1500 W surges. | Use Scenario: Shielding 4–20 mA current-loop sensors and RS-485 nodes from ESD and induced lightning surges in factory-floor wiring. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF typical) shunt protector across differential signal pair or supply-to-ground, responding before sensitive analog front-ends saturate. Use Value: Clamps 8/20 µs surges to <45 V with <1 ns latency, maintaining signal fidelity and avoiding false triggers in precision measurement systems. |
| Telecom Line Surge Suppression | Consumer Power Adapter Input Protection |
Use Scenario: Safeguarding DSL/ADSL line drivers and POTS interface ICs against longitudinal surges from outdoor copper pairs exposed to lightning. IC Role / Device Role / Timing Role: Primary-level TVS mounted at board edge, coordinated with secondary GDT or MOV for staged protection per ITU-T K.20/K.21. Use Value: Handles up to 36.2 A peak current (10/1000 µs) with predictable VC, enabling precise coordination with upstream protectors and minimizing let-through energy. | Use Scenario: Adding secondary surge immunity to AC-DC adapter inputs after primary MOV, protecting bridge rectifiers and bulk capacitors from fast-rising line transients. IC Role / Device Role / Timing Role: Fast-reacting clamp across AC input lines or DC bus, triggered before slower thermal fuses or varistors fully activate. Use Value: Reduces clamping voltage by >30% versus standard 1N4007-based solutions, lowering stress on electrolytic capacitors and improving adapter MTBF. |
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 | DO-214AA (SMB) package, lower PPPM = 600 W, VC = 48.4 V @ 12.4 A | Higher clamping voltage and lower surge capacity; suited for space-constrained PCBs where 1500 W is not required | Select SMBJ30CA only if board layout prohibits axial leads and system-level surge testing validates 600 W margin. |
| 1.5SMC33CA | DO-214AB (SMC) package, PPPM = 1500 W, VC = 53.3 V @ 28.1 A, higher VBR (31.4–34.7 V) | Less precise voltage matching to 1.5KE30C-E3/54's 28.5–31.5 V range; may allow higher steady-state leakage near VWM | Choose 1.5SMC33CA when SMC footprint is mandated and clamping voltage margin permits 53.3 V let-through. |
Compared with SMBJ30CA and 1.5SMC33CA, the 1.5KE30C-E3/54 provides tighter VBR tolerance, lower clamping voltage, and proven axial-lead thermal performance - making it preferred for high-reliability, high-surge industrial and automotive designs where lead-forming flexibility and junction-to-lead thermal path are critical.
Availability
1.5KE30C-E3/54 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom line surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5KE30C-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes must be mitigated through robust silicon junction design and certified flammability performance.
FAQ
What is the breakdown voltage range of the 1.5KE30C-E3/54?
The 1.5KE30C-E3/54 has a guaranteed breakdown voltage (VBR) range of 28.5 V to 31.5 V at a test current of 1.0 mA, measured under bidirectional conditions. This tight tolerance ensures consistent clamping behavior across manufacturing lots and temperature extremes from –55 °C to +175 °C, directly supporting design margin calculations for overvoltage protection circuits.
Is the 1.5KE30C-E3/54 unidirectional or bidirectional?
The 1.5KE30C-E3/54 is a bidirectional Transient Voltage Suppressor, indicated by the "C" suffix in its part number. It provides symmetrical clamping for both positive and negative transients without polarity sensitivity - confirmed by its lack of cathode band marking and identical electrical characteristics in either direction per Vishay Document 88301.
What is the maximum clamping voltage of the 1.5KE30C-E3/54 under surge conditions?
The 1.5KE30C-E3/54 clamps to a maximum of 41.4 V when subjected to its rated peak pulse current of 36.2 A (10/1000 µs waveform). This value is measured across the device terminals during standardized surge testing and represents the highest voltage seen by downstream circuitry during worst-case transient events.
Does the 1.5KE30C-E3/54 meet automotive qualification standards?
The base 1.5KE30C-E3/54 is RoHS-compliant commercial-grade; however, the AEC-Q101 qualified variant is designated as 1.5KE30C**HE3_B**, not the -E3/54 version. For automotive applications requiring AEC-Q101, engineers must specify the HE3_B suffix - the 1.5KE30C-E3/54 itself is intended for industrial and telecom use where AEC-Q101 is not mandated.
What package type does the 1.5KE30C-E3/54 use, and what are its key mechanical features?
The 1.5KE30C-E3/54 uses the DO-201AD (Case Style 1.5KE) axial-leaded package with a molded UL 94 V-0 epoxy body, 0.375" (9.5 mm) lead length, and matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Its glass-passivated junction and JESD 201 Class 1A whisker rating make it suitable for high-reliability assembly processes.
1.5KE30C-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):
- 24.3V
- Voltage - Breakdown (Min):
- 27V
- Voltage - Clamping (Max) @ Ipp:
- 43.5V
- Current - Peak Pulse (10/1000µs):
- 34.5A
- 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
1.5KE30C-E3/54 FAQ
1.How can I place an order for 1.5KE30C-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE30C-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 1.5KE30C-E3/54 reliable?
The price and inventory of 1.5KE30C-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 1.5KE30C-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE30C-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE30C-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE30C-E3/54?
1.5KE30C-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE30C-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 1.5KE30C-E3/54?
For technical support, including 1.5KE30C-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE30C-E3/54 requirements.
6.How does Aetrix verify that 1.5KE30C-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE30C-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 1.5KE30C-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE30C-E3/54?
All 1.5KE30C-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE30C-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 1.5KE30C-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE30C-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE30C-E3/54 Tags
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