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Taiwan Semiconductor Corporation 1.5KE36
- Part No.:
- 1.5KE36
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE36.pdf
- Description:
- 1500W, 36V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:4,525
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Product details
Overview
1.5KE36 from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a nominal breakdown voltage of 36 V, clamps transients to ≤52.0 V at 30 A peak impulse current, and operates with ≤1 μA leakage above 29.1 V working stand-off voltage. It is used in automotive ECU power inputs and industrial PLC I/O protection.
For engineers reviewing the 1.5KE36 datasheet, 1.5KE36 pinout, 1.5KE36 application, or 1.5KE36 equivalent, key selection criteria include its DO-201 package compatibility, 10/1000 μs surge rating, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and unidirectional polarity marking - all critical for robust front-end surge immunity design.
Technical Context
The 1.5KE36 is a junction-terminated, silicon avalanche diode optimized for fast clamping of high-energy transients. Its low dynamic impedance ensures stable clamping voltage under 30 A 10/1000 μs surges, and its <1.0 ps response time enables protection of sensitive downstream ICs before damage occurs.
It operates within a -55°C to +175°C junction temperature range and is rated for 5 W steady-state dissipation on a 16 mm × 16 mm copper pad. The device meets AEC-Q101 qualification when ordered with "H" suffix and complies with RoHS and halogen-free standards per IEC 61249-2-21.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Voltage | 36 V - defines the approximate DC operating rail it protects without conduction. |
| Breakdown Voltage VBR | 32.4–39.6 V @ 1.0 mA - guarantees reliable avalanche initiation across manufacturing lot and temperature. |
| Working Stand-off Voltage VWM | 29.1 V - maximum continuous reverse voltage before leakage exceeds 1 μA; sets safe margin below system rail. |
| Peak Pulse Power PPK | 1500 W @ 10/1000 μs - sustains single high-energy surges common in automotive load-dump and inductive switching events. |
| Clamping Voltage VC | ≤52.0 V @ 30 A - limits voltage seen by protected ICs to a safe level during worst-case surge. |
| Junction Temperature Range | -55°C to +175°C - supports operation in under-hood automotive and industrial environments without derating. |
| Package | DO-201 - industry-standard axial leaded package with tin-plated leads, UL 94V-0 molding compound, and 0.090 g mass. |
Pinout & Package
Package: DO-201 - axial-leaded, molded plastic case with cathode band marking for unidirectional polarity. Leads are pure tin-plated and solderable per J-STD-002; meets JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground-reference terminal | Connected to system ground or low-side return path; forms reference for clamping action. |
| Cathode | Protected-line terminal | Connected to line being protected (e.g., 24 V supply rail); conducts surge current to ground when VAK > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Surge capability | 1500 W peak power at 10/1000 μs waveform - handles automotive load-dump and inductive switch-off transients. |
| Clamping performance | VC ≤ 52.0 V @ 30 A - ensures protected ICs (e.g., microcontrollers, CAN transceivers) remain below absolute maximum ratings. |
| Leakage control | <1 μA @ 29.1 V - prevents excessive quiescent current in battery-powered or always-on systems. |
| Response speed | <1.0 ps from 0 V to VBR - activates faster than most ESD events and fast transients, minimizing voltage overshoot. |
| Environmental compliance | AEC-Q101 qualified (with H suffix), RoHS-compliant, halogen-free - suitable for automotive and regulated industrial deployments. |
Applications
| Automotive Power Input Protection | Industrial PLC Digital I/O Protection |
|---|---|
|
Use Scenario: Protecting 24 V power input of engine control unit (ECU) against ISO 7637-2 Pulse 5a (load dump) up to 60 V, 400 ms duration. IC Role / Device Role / Timing Role: Primary shunt TVS element placed directly at connector entry point to clamp surge energy before reaching DC-DC converter and MCU. Use Value: Limits peak voltage to ≤52.0 V, preventing latch-up or permanent damage to 36 V-rated input stages while surviving ≥1500 W transient energy. |
Use Scenario: Safeguarding 24 V digital input channels of programmable logic controller against field-wiring induced transients and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional clamping diode mounted adjacent to optocoupler input, referenced to common ground. Use Value: Maintains <1 μA leakage at 24 V nominal rail, ensuring clean logic-level detection while clamping 30 A surges to safe levels for opto-IC survival. |
| LED Driver Supply Rail Protection | Telecom Line Interface Protection |
|
Use Scenario: Shielding constant-current LED driver IC supply from inductive kickback during PWM dimming or hot-swap events. IC Role / Device Role / Timing Role: Fast-response TVS placed between input capacitor and driver IC VIN pin. Use Value: Clamps 10/1000 μs surges to ≤52.0 V within <1.0 ps, preventing overvoltage shutdown or internal FET failure in driver ICs. |
Use Scenario: Front-end protection of RS-485 transceiver power and data lines in outdoor telecom cabinets exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS on VCC rail and bidirectional variants (e.g., 1.5KE36CA) on differential bus lines. Use Value: Enables compliance with IEC 61000-4-5 Level 3 (1 kV/2 kV) when combined with series impedance, leveraging 1500 W surge rating and low clamping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ36A | Same DO-214AC (SMA) package; lower 400 W rating; VC = 58.1 V @ 6.9 A - less robust for high-energy surges. | Targeted at space-constrained PCBs where DO-201 axial leads are impractical; not rated for ISO 7637-2 Pulse 5a. | Select only if board layout prohibits axial DO-201 and surge energy is limited to ≤400 W. |
| ON Semiconductor 1.5SMC36A | DO-214AB (SMC) package; same 1500 W rating; VC = 58.1 V @ 25.8 A - higher clamping voltage than 1.5KE36's 52.0 V. | Suitable for surface-mount assembly; requires reflow-compatible footprint; thermal performance differs due to SMC thermal mass. | Choose when automated SMT assembly is required and 6.1 V higher clamping voltage is acceptable for protected ICs. |
Compared with Littelfuse SMAJ36A and ON Semiconductor 1.5SMC36A, the 1.5KE36 delivers superior clamping (52.0 V vs. ≥58.1 V) and proven ISO 7637-2 compliance in its native DO-201 through-hole package - making it preferred for high-reliability automotive and industrial power rail protection where voltage margin and surge energy are critical.
Availability
1.5KE36 is available at Aetrix Electronics and suitable for automotive ECU power inputs, industrial PLC I/O modules, LED driver supply rails, and telecom line interface protection requiring stable component supply and long-term lifecycle continuity.
Supply support for 1.5KE36 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 for automotive, industrial, and consumer markets.
The 1.5KE series was developed to deliver high-energy, AEC-Q101-capable transient protection in standard axial packages - addressing demand for cost-effective, high-reliability surge suppression in harsh-environment power systems.
FAQ
What is the clamping voltage of the 1.5KE36 under maximum rated surge current?
The 1.5KE36 has a maximum clamping voltage (VC) of 52.0 V when subjected to a 30 A peak impulse current with a 10/1000 μs waveform. This value is measured per JEDEC test conditions and ensures downstream components see no more than 52.0 V during surge events - critical for protecting 36 V-rated ICs and power stages. The 1.5KE36 achieves this while maintaining low dynamic impedance and fast response.
Is the 1.5KE36 unidirectional or bidirectional, and how is polarity marked?
The 1.5KE36 is a unidirectional TVS diode, with polarity indicated by a cathode band on the DO-201 package body. The cathode terminal connects to the protected line (e.g., 24 V rail), and the anode connects to ground. Bidirectional versions require "CA" suffix (e.g., 1.5KE36CA) and lack polarity marking. The 1.5KE36 datasheet confirms unidirectional operation and specifies forward voltage (VF) = 3.5 V at 50 A.
Does the 1.5KE36 meet automotive qualification standards?
The base 1.5KE36 is not AEC-Q101 qualified; however, the variant 1.5KE36H (with "H" suffix) is explicitly AEC-Q101 qualified per the manufacturer's ordering information. Both share identical electrical specs and DO-201 packaging, but only the "H" version undergoes stress testing for automotive temperature cycling, humidity, and mechanical shock. For automotive designs, specify 1.5KE36H to ensure compliance.
What is the maximum leakage current of the 1.5KE36 at its working stand-off voltage?
The 1.5KE36 exhibits a maximum blocking leakage current (ID) of 1 μA when biased at its working stand-off voltage (VWM) of 29.1 V. This low leakage ensures minimal impact on system power budget - especially important in always-on or battery-backed circuits. The specification is verified at TA = 25°C and aligns with JEDEC test conditions using 1.0 mA test current for VBR measurement.
Can the 1.5KE36 be used in place of the 1.5KE36A variant?
No - the 1.5KE36 and 1.5KE36A are distinct variants with different breakdown voltage ranges: 1.5KE36 specifies VBR = 32.4–39.6 V, while 1.5KE36A tightens this to 34.2–37.8 V. Their clamping voltages also differ (52.0 V vs. 49.9 V). Substituting one for the other may violate system overvoltage margins or fail to trigger at intended thresholds. Always match the exact suffix (A or blank) specified in the design's BOM and validation reports.
1.5KE36 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):
- 29.1V
- Voltage - Breakdown (Min):
- 32.4V
- Voltage - Clamping (Max) @ Ipp:
- 52V
- Current - Peak Pulse (10/1000µs):
- 30A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE36 FAQ
1.How can I place an order for 1.5KE36 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE36 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 1.5KE36 reliable?
The price and inventory of 1.5KE36 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE36 is usually 5 days.
3.What payment methods are accepted for 1.5KE36?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE36 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE36?
1.5KE36 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE36 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 1.5KE36?
For technical support, including 1.5KE36 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE36 requirements.
6.How does Aetrix verify that 1.5KE36 is sourced from the original manufacturer or authorized distributors?
All 1.5KE36 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 1.5KE36 meets industry standards.
7.What is the process for return or replacement of 1.5KE36?
All 1.5KE36 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE36, 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 1.5KE36 part is unused and in its original packaging.
Return procedure for 1.5KE36:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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