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Taiwan Semiconductor Corporation 1V5KE39A
- Part No.:
- 1V5KE39A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE39A.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:6,295
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Product details
Overview
1V5KE39A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with breakdown voltage 37.1–41.0 V at 1 mA, reverse stand-off voltage 33.3 V, clamping voltage 53.9 V at 28.0 A peak pulse current, and maximum junction temperature of 175°C. It protects power rails and I/O lines in industrial power supplies and motor drives against ESD and lightning-induced surges.
For engineers reviewing the 1V5KE39A datasheet, 1V5KE39A pinout, 1V5KE39A application, or 1V5KE39A equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, peak pulse current capability under 10/1000 µs waveform, thermal derating above 75°C ambient, and DO-201 mechanical compatibility with existing PCB footprints.
Technical Context
The 1V5KE39A operates as a silicon avalanche diode with glass-passivated junction, delivering fast response time (<1 ns) and low incremental surge resistance for precise overvoltage clamping. Its unidirectional polarity enables DC rail protection without reverse conduction during normal operation.
Designed for single-pulse transient suppression per IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (surge), it sustains 1500 W peak pulse power at 1 ms pulse width and exhibits <1 µA reverse leakage above 10 V, ensuring minimal standby power loss in always-on systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 37.1 V / 41.0 V at 1 mA - defines minimum and maximum avalanche initiation threshold across production lot |
| VRWM | 33.3 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 53.9 V at 28.0 A - clamped voltage seen by protected circuit during full-rated 10/1000 µs surge |
| PPPM | 1500 W - peak pulse power handling capacity under standardized 1 ms pulse condition |
| TJ max | +175 °C - maximum allowable junction temperature, enabling use in high-ambient industrial environments |
| IR @ VRWM | <1 µA - ensures negligible standby current draw in battery-backed or energy-sensitive applications |
Pinout & Package
Package: DO-201 axial leaded package with cathode band marking; meets UL 94V-0 flammability rating; pure tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | DC return path / ground reference | Connected to system ground or lower-potential rail; carries surge current back to source during clamping |
| Cathode | Protected line input | Connected to line being protected (e.g., +36 V rail); avalanche conduction occurs from cathode to anode when VAK exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under humidity and thermal cycling stress |
| 1500 W peak pulse power (1 ms) | Supports robust immunity to IEC 61000-4-5 Level 4 (4 kV line-to-earth surge) without degradation |
| Clamping ratio VC/VBR ≈ 1.37 | Provides tight overvoltage margin-critical for protecting 36 V-rated components with 10% headroom |
| DO-201 mechanical standardization | Enables drop-in replacement in legacy designs using industry-standard axial TVS footprints |
Applications
| Industrial Power Supply Input Protection | Motor Drive Gate Driver Protection |
|---|---|
Use Scenario: 36 V DC input stage of DIN-rail power supply exposed to load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between +36 V rail and chassis ground to clamp transients before they reach DC-DC controller ICs. Use Value: Clamps 28 A surge to ≤53.9 V, preserving 36 V-rated MOSFET drivers and feedback optocouplers within safe operating area. | Use Scenario: Isolated gate drive supply rail (+15 V) for IGBT modules in variable-frequency drives. IC Role / Device Role / Timing Role: TVS connected from gate driver output to local ground to absorb Miller-induced voltage spikes during switching transitions. Use Value: Sub-1 ns response prevents false turn-on of IGBTs caused by dV/dt coupling, reducing shoot-through risk. |
| Telecom Line Card Surge Protection | Automotive Body Control Module (BCM) Power Rail |
Use Scenario: Secondary-side 24 V distribution bus in telecom shelf powering fan trays and interface cards. IC Role / Device Role / Timing Role: TVS installed on each 24 V feed to protect hot-swap controllers and PMICs from cross-coupled surges. Use Value: 33.3 V VRWM allows reliable operation across 24 V ±10% input range while clamping to 53.9 V during 1 kA surge events. | Use Scenario: 12 V main power input to BCM controlling door locks, lighting, and window motors. IC Role / Device Role / Timing Role: Primary overvoltage clamp on fused battery feed, upstream of LDOs and CAN transceivers. Use Value: Withstands ISO 7637-2 Pulse 1 (−150 V/2 Ω) and Pulse 3b (±100 V) without failure, maintaining system uptime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | DO-214AA package; 36 V VRWM; 58.1 V VC @ 25.1 A; 600 W PPPM | Lower power rating limits use to sub-IEC Level 3 surge conditions; surface-mount only | Select when board space is constrained and surge threat level is limited to ESD/EFT only |
| 1N6285A | Same manufacturer, identical DO-201 package and electrical specs; obsolete JEDEC part number | No functional difference; same thermal and mechanical behavior | Use only if legacy BOM references 1N6285A; 1V5KE39A is direct form-fit-function replacement |
Compared with SMBJ36A and 1N6285A, the 1V5KE39A provides higher surge power margin (1500 W vs. 600 W) and maintains legacy through-hole assembly compatibility, making it optimal for industrial upgrades where PCB rework is cost-prohibitive.
Availability
1V5KE39A is available at Aetrix Electronics and suitable for industrial power supplies, motor drive systems, and telecom line cards requiring stable component supply with consistent DO-201 mechanical form factor and 1500 W surge immunity.
Supply support for 1V5KE39A 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs, with global distribution and AEC-Q200 qualified product lines.
The 1V5KE series was developed to deliver high-reliability, high-power transient suppression for industrial and transportation applications where DO-201 axial packaging remains essential for serviceability and thermal mass requirements.
FAQ
What is the maximum clamping voltage of the 1V5KE39A under full-rated surge current?
The 1V5KE39A clamps to 53.9 V when subjected to its rated peak pulse current of 28.0 A under the standard 10/1000 µs waveform. This value is measured at TA = 25°C and represents the upper limit of voltage imposed on the protected circuit during worst-case transient events, ensuring compatibility with 36 V nominal systems that require ≥10% overvoltage margin.
Is the 1V5KE39A suitable for bidirectional transient protection?
No, the 1V5KE39A is unidirectional and must be used with correct polarity-cathode toward the protected line. For bidirectional protection, the designated variant is 1V5KE39CA, which features symmetrical breakdown in both directions and uses the same DO-201 package. Using 1V5KE39A in reverse-biased configuration will not provide clamping in the forward direction.
What is the reverse leakage current specification for the 1V5KE39A at its rated VRWM?
At its reverse stand-off voltage of 33.3 V and TA = 25°C, the 1V5KE39A exhibits ≤1 µA reverse leakage current. This low leakage ensures minimal power loss in always-on circuits such as battery-backed monitoring systems or low-quiescent-current power management ICs powered from the same rail.
Does the 1V5KE39A meet RoHS and halogen-free compliance standards?
Yes, the 1V5KE39A is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound meets UL 94V-0 flammability rating, and the pure tin-plated leads satisfy J-STD-002 solderability requirements-making it suitable for environmentally regulated industrial and automotive production programs.
How does thermal derating affect the 1V5KE39A's surge capability above 75°C ambient?
Per the steady-state power derating curve, the 1V5KE39A's peak pulse power rating declines linearly from 1500 W at 25°C to approximately 750 W at 125°C ambient. At 100°C, it retains ~1125 W capability. Engineers must apply this derating when designing for enclosed enclosures or high-temperature engine bay locations to avoid permanent junction damage during repeated surge events.
1V5KE39A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AD, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 28A
- 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:
- DO-201AD
1V5KE39A FAQ
1.How can I place an order for 1V5KE39A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE39A 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 1V5KE39A reliable?
The price and inventory of 1V5KE39A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE39A is usually 5 days.
3.What payment methods are accepted for 1V5KE39A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE39A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE39A?
1V5KE39A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE39A 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 1V5KE39A?
For technical support, including 1V5KE39A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE39A requirements.
6.How does Aetrix verify that 1V5KE39A is sourced from the original manufacturer or authorized distributors?
All 1V5KE39A 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 1V5KE39A meets industry standards.
7.What is the process for return or replacement of 1V5KE39A?
All 1V5KE39A units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE39A, 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 1V5KE39A part is unused and in its original packaging.
Return procedure for 1V5KE39A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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