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Taiwan Semiconductor Corporation 1.5KE36A
- Part No.:
- 1.5KE36A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE36A.pdf
- Description:
- TVS 1500W 36V 5% UNIDIR DO-201
- Quantity:
- Payment:
- Shipping:
Inventory:7,109
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Product details
Overview
1.5KE36A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode with a nominal breakdown voltage of 36V, working stand-off voltage of 30.8V, clamping voltage of 49.9V at 31A peak pulse current, and DO-201 axial package - designed to protect automotive power electronics and industrial control circuits against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE36A datasheet, 1.5KE36A pinout, 1.5KE36A application, or 1.5KE36A equivalent, this part delivers verified AEC-Q101 qualification, sub-1ps response time for unidirectional surge events, low dynamic impedance, and <1µA leakage above 10V - critical for ESD and inductive switching protection in high-reliability embedded systems.
Technical Context
The 1.5KE36A operates as a unidirectional avalanche diode, triggering at VBR = 34.2–37.8V (tested at 1mA), clamping transient energy within 49.9V at IPP = 31A under 10/1000µs waveform. Its junction temperature range spans –55°C to +175°C, supporting under-hood automotive environments.
It features pure tin-plated leads compliant with J-STD-002 solderability, UL 94V-0 molding compound, and meets JESD 201 Class 2 whisker resistance. Polarity is marked by cathode band; no bidirectional functionality is supported - confirmed by absence of "C" or "CA" suffix and exclusive listing in unidirectional rows of the electrical table.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1mA | 34.2–37.8V - precise avalanche initiation window ensures reliable turn-on before downstream IC damage |
| VWM | 30.8V - maximum continuous reverse operating voltage; sets safe margin below VBR for system-level DC bias |
| VC @ IPP = 31A | 49.9V - clamping voltage limits transient overshoot across protected load during 10/1000µs surge |
| PPK | 1500W - peak pulse power rating defines single-event surge handling capacity without failure |
| IPP | 31A - peak impulse current capability directly maps to IEC 61000-4-5 Level 4 immunity compliance |
| TJMAX | +175°C - enables operation in high-temperature engine bay or industrial motor drive environments |
| Response Time | <1.0ps - ultrafast avalanche response prevents voltage overshoot before clamping action begins |
Pinout & Package
Package: DO-201 axial leaded package with cathode band marking; case material meets UL 94V-0; weight ≈ 0.090g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or low-side return path; conducts during forward surge (e.g., reverse battery) |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 12V rail); blocks normal operation, avalanches during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock per AEC standard |
| 1500W surge rating (10/1000µs) | Supports robust protection against load dump and inductive kick in 12V/24V vehicle systems |
| Clamping ratio VC/VBR = 1.38 | Low ratio indicates high efficiency in diverting surge energy while minimizing voltage stress on protected ICs |
| Leakage current <1µA @ VWM | Negligible standby power loss and minimal impact on high-impedance sensor or logic inputs |
| Meets ISO 7637-2 Pulse 1/2a/2b/3a/3b | Complies with full suite of automotive transient immunity requirements for battery-supplied ECUs |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protects microcontroller GPIO and CAN transceiver power rails from load dump and alternator ripple in BCMs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12V supply and ground, clamping transients before they reach LDOs or interface ICs. Use Value: Prevents latch-up or permanent damage to 3.3V/5V logic during 12V system surges up to 100V, validated per ISO 7637-2 Pulse 5a. |
Use Scenario: Shields 24V digital input circuitry in programmable logic controllers from field-wiring induced transients. IC Role / Device Role / Timing Role: Front-end protection device on optocoupler input side, absorbing EFT bursts and inductive switch spikes. Use Value: Enables >10k cycles of relay coil switching without degradation; clamps 4kV EFT pulses to <50V at input node. |
| LED Headlamp Driver Power Stage | Automotive Infotainment Power Supply |
|
Use Scenario: Safeguards buck converter MOSFET gate drivers and current sense amplifiers in adaptive LED headlamps. IC Role / Device Role / Timing Role: Parallel-connected TVS on 12V input rail, triggered within 1ps to limit voltage rise during hot-swap or short-circuit events. Use Value: Maintains driver IC functionality during 60V/100ms load dump events; TJ derating supports continuous operation at +125°C ambient. |
Use Scenario: Protects PMIC and USB-C power delivery ICs in infotainment head units from battery reversal and jump-start transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main 12V input, coordinated with upstream fuse and secondary LC filtering. Use Value: Survives –14V reverse battery test (ISO 16750-2) and 1500W 10/1000µs surge without parametric shift or leakage increase. |
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 PPK = 400W; VC = 58.1V @ 6.9A | Not AEC-Q101 qualified; limited to commercial/industrial use; insufficient for automotive load dump | Select only for cost-sensitive non-automotive designs where 1500W surge rating is not required |
| ON Semiconductor 1.5SMC36A | DO-214AB (SMC) package; PPK = 1500W; VC = 49.9V @ 31A; same VBR range but AEC-Q101 not documented | Compatible clamping performance but lacks formal AEC-Q101 certification documentation | Acceptable for industrial applications requiring identical electrical specs; verify qualification status per batch if used in automotive |
Compared with 1.5KE36A, SMAJ36A offers smaller footprint but sacrifices surge robustness and automotive qualification, while 1.5SMC36A matches power and clamping specs yet requires additional validation for AEC-Q101 compliance in safety-critical systems.
Availability
1.5KE36A is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, LED lighting drivers, and infotainment power supplies requiring stable component supply with guaranteed long-term continuity.
Supply support for 1.5KE36A 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 and industrial markets.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh automotive environments, emphasizing AEC-Q101 reliability, low clamping ratio, and thermal robustness in axial DO-201 packaging.
FAQ
What is the polarity configuration of the 1.5KE36A?
The 1.5KE36A is a unidirectional TVS diode with cathode band marking. It functions as a reverse-biased avalanche clamp - blocking normal operation up to 30.8V and conducting only during positive transients on the cathode side. It does not support bidirectional operation, as confirmed by its absence from "C"/"CA" suffix rows and exclusive listing in unidirectional test tables. The 1.5KE36A must be oriented with cathode toward the protected line and anode to ground.
Does the 1.5KE36A meet AEC-Q101 qualification?
Yes, the 1.5KE36A is explicitly AEC-Q101 qualified per the manufacturer's documentation. This includes stress testing for temperature cycling, high-temperature reverse bias (HTRB), and mechanical shock - all required for automotive under-hood and chassis applications. The "H" suffix in ordering codes (e.g., 1.5KE36AH) denotes AEC-Q101 compliance, and the 1.5KE36A data sheet confirms qualification without requiring optional suffixes for base part numbers in this series.
What is the maximum clamping voltage of the 1.5KE36A at rated surge current?
The maximum clamping voltage (VC) of the 1.5KE36A is 49.9V at IPP = 31A under the standard 10/1000µs double-exponential surge waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. It reflects the device's ability to limit energy dissipation while maintaining safe stress levels for downstream components such as LDOs, microcontrollers, and interface ICs.
Can the 1.5KE36A be used in bidirectional signal line protection?
No, the 1.5KE36A is strictly unidirectional and unsuitable for bidirectional signal line protection. Bidirectional variants in the same family carry "C" or "CA" suffixes (e.g., 1.5KE36CA), which are structurally distinct with symmetrical breakdown in both polarities. The 1.5KE36A has a defined cathode band and only clamps positive transients on the cathode; applying reverse voltage beyond its 30.8V VWM risks irreversible breakdown. For bidirectional data lines like RS-485 or CAN, select a designated bipolar TVS.
What is the thermal derating behavior of the 1.5KE36A above 25°C ambient?
The 1.5KE36A follows a linear derating curve from 100% peak pulse power (1500W) at TA = 25°C down to zero at TA = 175°C, per Figure 2 in the official datasheet. At 75°C ambient, it retains ~70% of rated power (~1050W), and at 125°C, ~40% (~600W). This derating applies to non-repetitive pulses; steady-state power dissipation is limited to 5W at TL = 75°C with specified copper pad mounting. Thermal design must account for this to avoid junction overheating during repeated surges.
1.5KE36A 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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 31A
- 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
1.5KE36A FAQ
1.How can I place an order for 1.5KE36A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE36A 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 1.5KE36A reliable?
The price and inventory of 1.5KE36A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE36A is usually 5 days.
3.What payment methods are accepted for 1.5KE36A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE36A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE36A?
1.5KE36A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE36A 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 1.5KE36A?
For technical support, including 1.5KE36A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE36A requirements.
6.How does Aetrix verify that 1.5KE36A is sourced from the original manufacturer or authorized distributors?
All 1.5KE36A 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 1.5KE36A meets industry standards.
7.What is the process for return or replacement of 1.5KE36A?
All 1.5KE36A units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE36A, 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 1.5KE36A part is unused and in its original packaging.
Return procedure for 1.5KE36A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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