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Vishay General Semiconductor - Diodes Division 1.5KE39CHE3/54
- Part No.:
- 1.5KE39CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE39CHE3/54.pdf
- Description:
- TVS DIODE 31.6VWM 56.4VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,036
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Product details
Overview
1.5KE39CHE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal 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), clamping voltage of 53.9 V at 27.8 A, and operates across –55 °C to +175 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching spikes.
For engineers reviewing the 1.5KE39CHE3/54 datasheet, 1.5KE39CHE3/54 pinout, 1.5KE39CHE3/54 application, or 1.5KE39CHE3/54 equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, clamping performance under standardized surge waveforms, thermal resistance data, and RoHS-compliant packaging details - all critical for automotive-grade ESD/surge design validation and BOM selection.
Technical Context
This device is a glass-passivated, unidirectional/bidirectional TVS diode in the 1.5KE family, optimized for fast transient suppression with sub-nanosecond response time. Its bidirectional configuration enables symmetrical clamping on AC-coupled or floating lines without polarity concerns, and its 15.4 °C/W junction-to-lead thermal resistance supports reliable power dissipation during repetitive surges.
The 1.5KE39CHE3/54 uses a molded epoxy case (UL 94 V-0 rated) with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. The HE3 suffix confirms AEC-Q101 qualification and JESD 201 Class 2 whisker resistance - essential for automotive electronics subjected to thermal cycling and vibration stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 37.1 V / 41.0 V at 1.0 mA - defines precise voltage threshold where clamping initiates under controlled test conditions |
| VWM | 33.3 V - maximum continuous working voltage before leakage exceeds 1.0 µA; sets safe operating margin below breakdown |
| VC @ IPPM | 53.9 V at 27.8 A - clamped voltage during 10/1000 µs surge; determines protected circuit's worst-case overvoltage exposure |
| PPPM | 1500 W - peak pulse power handling capability; validates robustness against IEC 61000-4-5 Level 4 surges |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance enables efficient heat transfer to PCB copper or heatsink |
| TJ max. | +175 °C - extended junction temperature rating supports operation in under-hood automotive environments |
| AEC-Q101 | Qualified - certified for automotive applications per stress test requirements including HTOL, TC, and HAST |
Pinout & Package
Package: Case Style 1.5KE - axial-leaded DO-201AD molded epoxy package with 0.375" (9.5 mm) lead length, UL 94 V-0 flammability rating, and matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connects to lower-potential side of protected line; forms one terminal of bidirectional clamp path |
| Cathode | Current exit point in forward bias | Connects to higher-potential side; together with anode, enables symmetrical clamping in both directions |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Enables stable VBR tolerance and long-term reliability under humidity and thermal stress |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-earth) in industrial and automotive systems |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive powertrain, body control, and ADAS modules requiring zero-failure field performance |
| Sub-nanosecond response time | Clamps transients before sensitive downstream components experience damaging overvoltage |
| RoHS-compliant, JESD 201 Class 2 whisker resistant | Ensures solder joint integrity and compliance in lead-free reflow processes for high-reliability assemblies |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input rail to clamp ±100 V spikes within 1 ns. Use Value: Prevents latch-up or gate oxide damage in MCU power regulators and CAN transceivers during ISO 7637-2 Pulse 5a events. |
Use Scenario: Safeguarding analog front-ends of pressure/temperature sensors connected to long harnesses in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS shunting induced lightning surges (IEC 61000-4-5) on 4–20 mA or RS-485 lines. Use Value: Maintains signal integrity by limiting transient overshoot to ≤54 V while adding <1 pF parasitic capacitance. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding Ethernet PHYs and PoE injectors from induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Bidirectional clamp between differential pairs and chassis ground to suppress common-mode transients. Use Value: Enables compliance with GR-1089-CORE and ITU-T K.21 basic protection levels without signal distortion. |
Use Scenario: Suppressing flyback voltage spikes from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to absorb inductive kickback energy. Use Value: Eliminates need for snubber RC networks, reducing BOM count and board space while sustaining 1500 W surge peaks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ39CA | Lower peak pulse power (600 W), smaller SMB package (vs. DO-201AD), higher VC/VBR ratio (1.42 vs. 1.38) | Better suited for space-constrained consumer PCBs; not rated for AEC-Q101 or 1500 W surges | Select when footprint reduction outweighs surge robustness; verify IEC 61000-4-5 margin with derated waveform testing. |
| 1.5KE39CA | Same 1.5KE package and electrical specs, but E3 suffix only (no AEC-Q101 qualification or JESD 201 Class 2 whisker resistance) | Acceptable for commercial-grade industrial controls, but excluded from automotive Tier 1 BOMs requiring full qualification traceability | Choose for cost-sensitive non-automotive designs where qualification documentation is not mandated. |
Compared with 1.5KE39CHE3/54, SMBJ39CA trades surge capacity and qualification for compactness, while 1.5KE39CA retains identical clamping performance but lacks automotive-grade process validation - making the HE3/54 variant the sole choice for production vehicles and safety-critical embedded systems.
Availability
1.5KE39CHE3/54 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom line card surge compliance requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for 1.5KE39CHE3/54 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 applications.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments, with emphasis on AEC-Q101 qualification, thermal stability, and repeatable clamping performance across temperature and lifetime.
FAQ
What is the breakdown voltage tolerance for 1.5KE39CHE3/54?
The 1.5KE39CHE3/54 has a specified breakdown voltage range of 37.1 V to 41.0 V at 1.0 mA test current, corresponding to a ±5.4% tolerance around the nominal 39 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes, critical for protecting voltage-sensitive loads like microcontrollers and analog sensors.
Is 1.5KE39CHE3/54 suitable for automotive applications?
Yes, the 1.5KE39CHE3/54 is AEC-Q101 qualified (per note 2 on page 3 of Vishay document 88301), with JESD 201 Class 2 whisker resistance and UL 94 V-0 molding compound. These certifications validate its use in automotive powertrain, body electronics, and ADAS modules where reliability under thermal cycling, vibration, and high-humidity conditions is mandatory.
How does the clamping voltage of 1.5KE39CHE3/54 compare to its breakdown voltage?
The 1.5KE39CHE3/54 clamps at 53.9 V when subjected to its rated 27.8 A peak pulse current (10/1000 µs waveform), resulting in a clamping ratio (VC/VBR) of approximately 1.38. This low ratio indicates highly effective voltage limiting - ensuring protected circuits see less than 1.4× the breakdown voltage during worst-case surges.
What is the meaning of the "HE3/54" suffix in 1.5KE39CHE3/54?
The "HE3" denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance; "/54" specifies the preferred package code for 13" paper tape and reel delivery (1400 units per reel). This full suffix identifies the exact qualified variant supplied by Vishay for high-reliability automotive and industrial programs.
Can 1.5KE39CHE3/54 be used in bidirectional AC signal paths?
Yes, the "C" in 1.5KE39CHE3/54 explicitly designates bidirectional functionality, enabling symmetrical clamping on both polarities of AC-coupled or floating signals. Its electrical characteristics - including VBR, VC, and leakage - apply identically in either direction, making it ideal for protecting RS-485, CAN FD, or audio lines exposed to differential-mode transients.
1.5KE39CHE3/54 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE39CHE3/54 FAQ
1.How can I place an order for 1.5KE39CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE39CHE3/54 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 1.5KE39CHE3/54 reliable?
The price and inventory of 1.5KE39CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE39CHE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE39CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE39CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE39CHE3/54?
1.5KE39CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE39CHE3/54 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 1.5KE39CHE3/54?
For technical support, including 1.5KE39CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE39CHE3/54 requirements.
6.How does Aetrix verify that 1.5KE39CHE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE39CHE3/54 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 1.5KE39CHE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE39CHE3/54?
All 1.5KE39CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE39CHE3/54, 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 1.5KE39CHE3/54 part is unused and in its original packaging.
Return procedure for 1.5KE39CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE39CHE3/54 Tags
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