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Vishay General Semiconductor - Diodes Division 1.5KE39C-E3/54
- Part No.:
- 1.5KE39C-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE39C-E3/54.pdf
- Description:
- TVS DIODE 31.6VWM 56.4VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,520
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Product details
Overview
1.5KE39C-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 39 V breakdown voltage (VBR = 37.1–41.0 V at 1.0 mA), 1500 W peak pulse power (10/1000 µs), and clamps to 53.9 V at 27.8 A, protecting sensitive ICs and MOSFETs in automotive and industrial interfaces.
For engineers reviewing the 1.5KE39C-E3/54 datasheet, 1.5KE39C-E3/54 pinout, 1.5KE39C-E3/54 application, or 1.5KE39C-E3/54 equivalent, this part delivers verified bidirectional surge suppression with UL 94 V-0 molded epoxy packaging, RoHS-compliant matte tin leads, and JESD 201 Class 1A whisker resistance - critical for ESD-prone sensor lines and DC bus protection.
Technical Context
This device operates as a silicon avalanche diode with glass-passivated junction, enabling sub-nanosecond response time (<1 ns) and low incremental surge resistance. Its bidirectional polarity eliminates need for orientation during PCB placement and supports symmetrical transient suppression on AC-coupled or differential lines.
Rated for -55 °C to +175 °C junction temperature, it sustains 1500 W peak pulse power under 10/1000 µs waveform at 0.01% duty cycle, with thermal resistance of 15.4 °C/W (junction-to-lead) ensuring robust energy dissipation without heatsinking in typical board-mount configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 37.1 V / 41.0 V at 1.0 mA - defines precise clamping onset threshold for overvoltage events |
| VC @ IPPM | 53.9 V at 27.8 A - maximum clamped voltage seen by protected circuit during full-rated surge |
| PPPM | 1500 W (10/1000 µs) - peak transient energy handling capacity without degradation |
| VWM | 33.3 V - maximum continuous working voltage before leakage exceeds 1.0 µA |
| ID @ VWM | ≤1.0 µA - ensures negligible standby current draw in always-on systems |
| TJ max | +175 °C - enables operation in under-hood automotive or high-temperature industrial enclosures |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with 0.375" lead length, UL 94 V-0 compliant |
Pinout & Package
1.5KE39C-E3/54 uses a two-terminal axial-leaded DO-201AD package (Case Style 1.5KE), with no polarity marking - consistent with its bidirectional function. Leads are matte tin-plated and solderable per J-STD-002/JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No cathode band; terminals interchangeable - simplifies layout and eliminates orientation errors |
| Lead 1 / Lead 2 | Current path for transient conduction | Both leads conduct equally in either direction; requires symmetric trace routing for balanced impedance |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| 1500 W peak pulse power (10/1000 µs) | Withstands multiple lightning-induced surges per IEC 61000-4-5 Level 4 without parameter shift |
| Sub-nanosecond response time | Clamps transients before downstream ICs experience damaging overvoltage stress |
| UL 94 V-0 epoxy molding | Meets flammability requirements for enclosed industrial and automotive control units |
| JESD 201 Class 1A whisker resistance | Prevents tin whisker growth in high-reliability applications with >10-year service life |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and Hall-effect sensors from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair or supply rail to clamp ±100 V transients. Use Value: Limits voltage excursion to ≤53.9 V, preserving signal integrity and preventing latch-up in 5 V/3.3 V interface ICs. |
Use Scenario: Safeguarding 4–20 mA current loop inputs against field-wiring induced surges in factory automation. IC Role / Device Role / Timing Role: Mounted directly at terminal block to shunt fast-rising transients before reaching precision ADC front-end. Use Value: Withstands 1500 W surges while maintaining <1 µA leakage at 33.3 V, avoiding measurement offset drift. |
| Telecom Line Card Surge Protection | Consumer Power Adapter ESD Clamping |
Use Scenario: Secondary-side transient suppression on Ethernet PHY power rails and data lines in PoE-powered switches. IC Role / Device Role / Timing Role: Bidirectional clamping element across isolated DC/DC output to absorb coupled lightning energy. Use Value: 53.9 V clamping voltage ensures safe margin below 57 V PoE+ maximum, preventing regulator overvoltage failure. |
Use Scenario: Input-stage ESD protection on USB-C and barrel jack inputs of smart home hubs and audio devices. IC Role / Device Role / Timing Role: First-line defense against human-body-model (HBM) and IEC 61000-4-2 contact discharge events. Use Value: Sub-ns response captures fast ESD spikes before they propagate into LDOs or microcontrollers, reducing system-level resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | Lower PPPM (600 W), smaller SMB package (surface-mount), VC = 58.1 V at 10.3 A | Preferred for space-constrained PCBs where 1500 W rating is not required | Select when board area is limited and surge threat level is IEC 61000-4-5 Level 2–3 |
| 1.5KE39CA | Same electrical specs and package, but lacks E3/54 tape-and-reel delivery code and RoHS compliance marking | Legacy version suitable only for non-RoHS or non-automotive programs | Choose 1.5KE39C-E3/54 for new designs requiring traceable, RoHS-compliant, and JESD 201–qualified sourcing |
Compared with SMBJ36CA and legacy 1.5KE39CA, the 1.5KE39C-E3/54 uniquely combines 1500 W surge capability, bidirectional symmetry, RoHS compliance, and JESD 201 Class 1A whisker resistance - making it the preferred choice for automotive-grade and high-reliability industrial deployments where long-term solder joint integrity and repeatable clamping performance are mandatory.
Availability
1.5KE39C-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, telecom line cards, and consumer power adapter ESD protection requiring stable component supply and full compliance traceability.
Supply support for 1.5KE39C-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 and automotive environments.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - delivering consistent clamping performance across wide temperature ranges and extended service life in mission-critical power and signal protection roles.
FAQ
What is the breakdown voltage range of the 1.5KE39C-E3/54?
The 1.5KE39C-E3/54 has a guaranteed breakdown voltage range of 37.1 V to 41.0 V at a test current of 1.0 mA, measured per JEDEC standard. This tight VBR window ensures predictable clamping behavior across production lots and temperature extremes, critical for protecting 36 V nominal systems such as 24 V automotive ECUs and industrial 48 V DC buses. The 1.5KE39C-E3/54 maintains this specification over its full -55 °C to +175 °C operating junction temperature range.
Is the 1.5KE39C-E3/54 unidirectional or bidirectional?
The 1.5KE39C-E3/54 is a bidirectional TVS diode, indicated by the "C" suffix in its part number. It provides symmetrical clamping in both polarities, with identical VBR, VC, and IPPM characteristics in positive and negative directions. Unlike unidirectional variants (e.g., 1.5KE39A), it carries no cathode band and may be installed in either orientation - ideal for AC-coupled lines, differential pairs, and floating supply rails where polarity reversal is possible. The 1.5KE39C-E3/54 meets this requirement without external circuitry or layout constraints.
What is the maximum clamping voltage of the 1.5KE39C-E3/54 at rated surge current?
The 1.5KE39C-E3/54 clamps to a maximum of 53.9 V at its rated peak pulse current of 27.8 A (10/1000 µs waveform). This value is measured under standardized conditions and represents the highest voltage the protected circuit will experience during a full 1500 W transient event. Designers use this figure to verify margin between clamped voltage and the absolute maximum ratings of downstream components - for example, confirming that 53.9 V remains safely below the 60 V breakdown limit of a typical 48 V-rated MOSFET gate oxide. The 1.5KE39C-E3/54 achieves this with minimal overshoot due to its sub-nanosecond response.
Does the 1.5KE39C-E3/54 meet automotive qualification standards?
The 1.5KE39C-E3/54 is RoHS-compliant and qualified to JESD 201 Class 1A for whisker resistance, but it is not AEC-Q101 qualified. AEC-Q101 qualification applies only to variants with the "HE3" suffix (e.g., 1.5KE39CAHE3_B). The 1.5KE39C-E3/54 is commercial-grade and intended for industrial, telecom, and consumer applications where full automotive qualification is not mandated. For automotive use, engineers should specify the AEC-Q101–qualified variant; the 1.5KE39C-E3/54 remains suitable for non-safety-critical subsystems where Vishay's commercial reliability data suffices.
What package type does the 1.5KE39C-E3/54 use, and what are its key mechanical properties?
The 1.5KE39C-E3/54 uses the axial-leaded DO-201AD package (Case Style 1.5KE), featuring a molded epoxy body meeting UL 94 V-0 flammability rating. Its leads are matte tin-plated and comply with J-STD-002 and JESD 22-B102 solderability standards. The package has a 0.375" (9.5 mm) lead length and withstands solder dip at 275 °C for up to 10 seconds. This robust mechanical construction supports manual and automated through-hole assembly while ensuring long-term mechanical stability in vibration-prone environments - a key attribute leveraged in the 1.5KE39C-E3/54's deployment across industrial motor drives and transportation electronics.
1.5KE39C-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):
- 31.6V
- Voltage - Breakdown (Min):
- 35.1V
- Voltage - Clamping (Max) @ Ipp:
- 56.4V
- Current - Peak Pulse (10/1000µs):
- 26.6A
- 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
1.5KE39C-E3/54 FAQ
1.How can I place an order for 1.5KE39C-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE39C-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 1.5KE39C-E3/54 reliable?
The price and inventory of 1.5KE39C-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 1.5KE39C-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE39C-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE39C-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE39C-E3/54?
1.5KE39C-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE39C-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 1.5KE39C-E3/54?
For technical support, including 1.5KE39C-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE39C-E3/54 requirements.
6.How does Aetrix verify that 1.5KE39C-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE39C-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 1.5KE39C-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE39C-E3/54?
All 1.5KE39C-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE39C-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 1.5KE39C-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE39C-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE39C-E3/54 Tags
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