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Taiwan Semiconductor Corporation 1.5KE30A
- Part No.:
- 1.5KE30A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE30A.pdf
- Description:
- TVS 1500W 30V 5% UNIDIR DO-201
- Quantity:
- Payment:
- Shipping:
Inventory:7,045
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Product details
Overview
1.5KE30A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode with a nominal breakdown voltage of 30V, minimum VBR of 28.5V at 1mA test current, maximum clamping voltage of 41.4V at 38A peak pulse current, and DO-201 axial package. It protects automotive power electronics and industrial control inputs against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE30A datasheet, 1.5KE30A pinout, 1.5KE30A application, or 1.5KE30A equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal derating behavior, clamping performance under 10/1000μs surge, and direct substitution guidance for circuit protection design.
Technical Context
The 1.5KE30A operates as a unidirectional avalanche diode, triggering conduction when reverse voltage exceeds its 28.5–31.5V breakdown range. Its low dynamic impedance ensures rapid energy shunting during ESD or load-dump events, while junction temperature rating up to +175°C supports under-hood automotive deployment.
It meets ISO 7637-2 immunity requirements for automotive electronics and complies with RoHS and halogen-free standards per IEC 61249-2-21. The device is rated for 1500W non-repetitive peak pulse power at TA = 25°C and derates linearly above that ambient temperature per published curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1mA | 28.5–31.5V - defines precise avalanche initiation threshold for reliable overvoltage detection |
| VWM | 25.6V - maximum continuous reverse operating voltage before leakage exceeds 1μA |
| VC @ IPP = 38A | 41.4V - clamped voltage during full 1500W 10/1000μs surge, limiting downstream IC stress |
| PPK | 1500W - peak transient power handling capability at TA = 25°C |
| TJ max | +175°C - enables operation in high-temperature engine bay or industrial motor drive environments |
| Package | DO-201 - industry-standard axial leaded package with UL 94V-0 molding compound |
| Response time | <1.0ps - sub-picosecond turn-on ensures protection before sensitive logic is damaged |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking. Leads are pure tin plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference node | Connected to system ground or low-impedance return path to absorb surge current |
| Cathode | Protected line input | Connected to power rail or signal line requiring clamping; polarity mark identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| 1500W surge rating | Withstands single 10/1000μs transients up to 1500W without degradation |
| Low dynamic impedance | Enables tight clamping margin between VBR and VC, minimizing protected circuit overvoltage |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance stabilization network) |
| Halogen-free construction | Complies with IEC 61249-2-21, supporting environmentally regulated end markets |
Applications
| Automotive Power Input Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: 12V battery-fed ECUs exposed to load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp transients before they reach DC-DC converters or microcontrollers. Use Value: Limits peak voltage to 41.4V during 38A surge, preventing damage to 36V-rated input stages and meeting OEM surge immunity specs. | Use Scenario: 24V digital input modules receiving signals from field sensors in factory automation. IC Role / Device Role / Timing Role: Standoff protection on isolated input channels to suppress EFT bursts and inductive kickback from solenoid drivers. Use Value: Clamps 10/1000μs transients within 1ps, maintaining signal integrity and avoiding false triggering of optocouplers or level shifters. |
| LED Driver Overvoltage Clamp | Telecom Power Supply Surge Suppression |
Use Scenario: Constant-current LED drivers in outdoor signage subjected to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input bus to protect MOSFET gate drivers and current-sense amplifiers. Use Value: Absorbs 1500W surge energy without failure, preserving driver functionality and eliminating need for redundant protection layers. | Use Scenario: 48V telecom rectifier outputs feeding distributed power systems vulnerable to AC-line coupled transients. IC Role / Device Role / Timing Role: Secondary-stage TVS on DC output to limit voltage overshoot during hot-swap or fault recovery events. Use Value: Maintains clamping voltage below 42V, ensuring compatibility with 45V-rated downstream POL converters and PMICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A | DO-214AA package, 600W rating, lower VC = 48.4V at 12.3A, faster response but lower surge capacity | Preferred for space-constrained PCBs where 1500W is not required; unsuitable for ISO 7637-2 Pulse 1 load dump | Select SMBJ30A only when board area is critical and peak surge energy remains ≤600W |
| 1N6282A (same as 1.5KE30A) | JEDEC-registered part number for identical electrical and mechanical specifications; same DO-201 package and AEC-Q101 qualification | No functional difference; used interchangeably in BOMs and procurement systems | 1N6282A is a direct JEDEC identity match-no design or layout impact when substituting |
Compared with SMBJ30A, the 1.5KE30A delivers 2.5× higher surge power handling and certified ISO 7637-2 compliance, while 1N6282A provides identical performance with standardized JEDEC nomenclature for procurement traceability.
Availability
1.5KE30A is available at Aetrix Electronics and suitable for automotive ECU power inputs, industrial PLC digital I/O protection, LED driver overvoltage clamping, and telecom DC supply surge suppression requiring stable component supply across production lifecycles.
Supply support for 1.5KE30A 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and consumer markets since 1979.
The 1.5KE series was designed specifically for high-energy transient suppression in harsh environments, emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and robust DO-201 packaging for under-hood and factory-floor applications.
FAQ
What is the breakdown voltage tolerance of the 1.5KE30A?
The 1.5KE30A has a guaranteed breakdown voltage range of 28.5V to 31.5V at 1mA test current, corresponding to ±5% tolerance around the nominal 30V rating. This tight VBR window ensures consistent clamping behavior across production lots and supports predictable circuit protection margins in designs using the 1.5KE30A.
Is the 1.5KE30A suitable for bidirectional transient protection?
No, the 1.5KE30A is a unidirectional TVS diode intended for DC power line or signal line protection where polarity is fixed. For bidirectional applications such as AC lines or data buses, the 1.5KE30CA variant must be used. The 1.5KE30A's cathode band marking and asymmetric IV curve confirm its unidirectional operation.
Does the 1.5KE30A meet automotive qualification standards?
Yes, the 1.5KE30A is AEC-Q101 qualified and explicitly tested to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity requirements. Its +175°C junction rating, DO-201 mechanical robustness, and halogen-free construction align with automotive electronics reliability mandates, making it suitable for engine control, body electronics, and ADAS power domains.
What is the maximum clamping voltage of the 1.5KE30A during a 10/1000μs surge?
The 1.5KE30A clamps to a maximum of 41.4V at 38A peak pulse current under the standard 10/1000μs waveform. This value is measured per ANSI/IEEE C62.35 and represents the worst-case voltage seen by downstream components during full-rated 1500W surge events, enabling accurate overvoltage margin analysis in circuits using the 1.5KE30A.
How does thermal derating affect the 1.5KE30A's surge capability?
The 1.5KE30A's 1500W peak pulse power rating applies only at TA = 25°C; it derates linearly to zero at +175°C ambient per the published Pulse Derating Curve. At 100°C ambient, its usable surge power drops to approximately 750W. Designers must apply this derating when deploying the 1.5KE30A in high-temperature enclosures or near heat sources.
1.5KE30A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 38A
- 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-201
1.5KE30A FAQ
1.How can I place an order for 1.5KE30A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE30A 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 1.5KE30A reliable?
The price and inventory of 1.5KE30A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE30A is usually 5 days.
3.What payment methods are accepted for 1.5KE30A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE30A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE30A?
1.5KE30A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE30A 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 1.5KE30A?
For technical support, including 1.5KE30A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE30A requirements.
6.How does Aetrix verify that 1.5KE30A is sourced from the original manufacturer or authorized distributors?
All 1.5KE30A 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 1.5KE30A meets industry standards.
7.What is the process for return or replacement of 1.5KE30A?
All 1.5KE30A units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE30A, 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 1.5KE30A part is unused and in its original packaging.
Return procedure for 1.5KE30A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE30A Tags
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