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Taiwan Semiconductor Corporation 1.5KE36CA
- Part No.:
- 1.5KE36CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE36CA.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:4,163
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Product details
Overview
1.5KE36CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 36V, working stand-off voltage 29.1V, clamping voltage 49.9V at 31A peak pulse current, and junction temperature range −55°C to +175°C - used for ESD and surge protection in automotive power rails and industrial control I/O interfaces.
For engineers reviewing the 1.5KE36CA datasheet, 1.5KE36CA pinout, 1.5KE36CA application, or 1.5KE36CA equivalent, key selection criteria include bidirectional clamping capability, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, low dynamic impedance, sub-5ns response time, and AEC-Q101 qualification status.
Technical Context
The 1.5KE36CA operates as a bidirectional avalanche diode, triggering symmetrically in both polarities above its 34.2–37.8V breakdown range (tested at 1mA). It delivers 1500W peak pulse power under 10/1000μs waveform while maintaining clamping voltage ≤49.9V at 31A IPP, enabling robust protection of 24V/36V systems against load dump and inductive switching transients.
Its DO-201 package supports lead-free soldering per J-STD-002, meets UL 94V-0 flammability rating, and exhibits <1μA leakage at 29.1V VWM. Temperature coefficient of VBR is 0.099%/°C, ensuring stable clamping across −55°C to +175°C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Voltage | 36V - defines rated standoff level for 24V–36V system rail protection |
| Breakdown Voltage VBR | 34.2–37.8V @ 1mA - verified avalanche conduction threshold in both directions |
| Working Stand-off Voltage VWM | 29.1V - maximum continuous reverse voltage before leakage exceeds 1μA |
| Clamping Voltage VC | 49.9V @ 31A IPP - limits transient voltage seen by protected IC during 10/1000μs surge |
| Peak Pulse Power PPK | 1500W - sustains single 1ms surge without failure per JEDEC test conditions |
| Junction Temperature Range | −55°C to +175°C - enables deployment in under-hood automotive and industrial environments |
| Response Time | <5.0ns - ensures suppression activation before sensitive circuitry sustains damage |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
DO-201 axial-leaded package with cathode band marking for unidirectional variants; 1.5KE36CA is bidirectional and marked with "36C" or similar polarity-agnostic code. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No polarity dependency - either terminal serves as anode or cathode depending on transient polarity |
| Leads (anode & cathode) | PCB interconnect interface | Supports through-hole mounting; thermal path via leads to copper pour; no dedicated heatsink required for single-event surges |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| ISO 7637-2 compliance | Validated against Pulse 1 (inductive load disconnect), Pulse 2a/2b (battery interruption), and Pulse 3a/3b (switching noise) |
| Low dynamic impedance | Ensures minimal voltage overshoot during high-di/dt transients, critical for protecting 3.3V/5V logic downstream |
| AEC-Q101 qualification | Confirms suitability for automotive powertrain and body electronics where reliability is mandated |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive for environmentally compliant manufacturing |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Suppresses load dump transients (up to 120V, 400ms) on 24V battery-fed ECUs in commercial vehicles. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of DC-DC converters and microcontroller power inputs. Use Value: Limits rail voltage to ≤49.9V during surge, preventing latch-up or permanent damage to 36V-rated input stages. |
Use Scenario: Shields 24V digital input modules from inductive kickback when interfacing with solenoids and contactors. IC Role / Device Role / Timing Role: Fast-acting shunt device across field-side terminals to divert energy before it reaches optocoupler or Schmitt trigger inputs. Use Value: Responds within 5ns to clamp transients up to 1500W, preserving signal integrity and reducing false triggering. |
| LED Driver Surge Suppression | RS-485 Transceiver Protection |
Use Scenario: Protects constant-current LED drivers in streetlight systems exposed to lightning-induced surges on long outdoor wiring. IC Role / Device Role / Timing Role: Bidirectional TVS placed across driver output terminals to absorb common-mode and differential surges. Use Value: Clamps 10/1000μs transients to ≤49.9V while sustaining 31A peak current, extending driver lifetime in harsh environments. |
Use Scenario: Safeguards RS-485 transceivers in factory automation networks from EFT bursts and cable discharge events. IC Role / Device Role / Timing Role: Differential-mode protector between A/B bus lines and ground, leveraging symmetrical clamping behavior. Use Value: Maintains data integrity by limiting bus voltage excursion to safe levels (<±50V) during 4kV EFT pulses per IEC 61000-4-4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA (Bourns) | 600W rating, SMB package (smaller footprint), lower IPP (17.3A), same VBR/VWM range | Better suited for space-constrained PCBs but insufficient for 1500W load dump events | Select only when peak surge energy is ≤600W and board area is critical |
| SMCJ36CA (Littelfuse) | 1500W rating, SMC package (surface-mount), identical VBR/VWM/VC specs, AEC-Q101 qualified | Drop-in replacement for automated assembly; requires re-layout from axial DO-201 to SMD | Preferred for new designs targeting high-volume SMT production and automotive qualification |
Compared with SMBJ36CA, 1.5KE36CA delivers 2.5× higher surge power handling and axial through-hole reliability; versus SMCJ36CA, it trades SMT compatibility for proven mechanical robustness in high-vibration environments and simplified thermal management via lead conduction.
Availability
1.5KE36CA is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC I/O hardening, LED driver surge suppression, and RS-485 transceiver safeguarding requiring stable component supply across extended product lifecycles.
Supply support for 1.5KE36CA 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 automotive, industrial, and consumer markets since 1979.
The 1.5KE series was designed specifically for high-energy transient suppression in automotive and industrial power systems, emphasizing AEC-Q101 reliability, ISO 7637-2 compliance, and robust DO-201 packaging for demanding thermal and mechanical environments.
FAQ
What does the 'CA' suffix indicate in 1.5KE36CA?
The 'CA' suffix in 1.5KE36CA denotes bidirectional configuration - meaning the device provides symmetrical transient voltage clamping in both forward and reverse directions, unlike unidirectional 'A' variants. This makes 1.5KE36CA ideal for protecting AC-coupled circuits, differential buses like RS-485, or floating power domains where polarity reversal may occur during surge events.
Is 1.5KE36CA qualified to AEC-Q101 standards?
Yes, 1.5KE36CA is explicitly AEC-Q101 qualified per Taiwan Semiconductor's documentation, having undergone stress testing including high-temperature reverse bias (HTRB), temperature cycling, and unbiased highly accelerated stress testing (uHAST). This qualification confirms its suitability for automotive powertrain, chassis, and body electronics applications where reliability under thermal and electrical stress is mandatory.
How does the clamping voltage of 1.5KE36CA compare to its breakdown voltage?
The 1.5KE36CA has a minimum breakdown voltage (VBR) of 34.2V and a maximum clamping voltage (VC) of 49.9V at 31A IPP - resulting in a clamping ratio of ~1.46. This margin ensures that protected circuitry sees less than 50V during worst-case 1500W surges, well below typical 60V absolute maximum ratings of downstream DC-DC controllers and microcontrollers powered from 24V rails.
Can 1.5KE36CA be used in place of a unidirectional TVS like 1.5KE36A?
No - 1.5KE36CA is bidirectional and lacks polarity marking; substituting it for unidirectional 1.5KE36A in DC-only applications risks incorrect orientation and ineffective protection. While both share identical VBR and VC specs, 1.5KE36A must be installed with cathode toward positive rail, whereas 1.5KE36CA functions identically regardless of orientation - use only where bidirectional clamping is required.
What is the maximum allowable working voltage for 1.5KE36CA in continuous operation?
The maximum continuous working stand-off voltage (VWM) for 1.5KE36CA is 29.1V - this is the highest DC or RMS voltage the device can block without exceeding 1μA leakage current. Operating above 29.1V risks premature conduction and thermal runaway; therefore, 1.5KE36CA is intended for 24V nominal systems (with 29.1V headroom) and not for 36V or 48V primary rails without derating or supplemental protection.
1.5KE36CA 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:
- -
- Bidirectional Channels:
- 1
- 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 ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE36CA FAQ
1.How can I place an order for 1.5KE36CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE36CA 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 1.5KE36CA reliable?
The price and inventory of 1.5KE36CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE36CA is usually 5 days.
3.What payment methods are accepted for 1.5KE36CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE36CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE36CA?
1.5KE36CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE36CA 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 1.5KE36CA?
For technical support, including 1.5KE36CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE36CA requirements.
6.How does Aetrix verify that 1.5KE36CA is sourced from the original manufacturer or authorized distributors?
All 1.5KE36CA 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 1.5KE36CA meets industry standards.
7.What is the process for return or replacement of 1.5KE36CA?
All 1.5KE36CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE36CA, 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 1.5KE36CA part is unused and in its original packaging.
Return procedure for 1.5KE36CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE36CA Tags
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