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Taiwan Semiconductor Corporation 1.5KE170C
- Part No.:
- 1.5KE170C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE170C.pdf
- Description:
- 1500W, 170V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:8,825
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Product details
Overview
1.5KE170C from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 170V, clamping voltage 244V at 6.4A peak pulse current, and working stand-off voltage 138V. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE170C datasheet, 1.5KE170C pinout, 1.5KE170C application, or 1.5KE170C equivalent, this page delivers verified electrical parameters, mechanical packaging details, real-world protection use cases, and validated alternative parts for ESD and surge immunity design.
Technical Context
The 1.5KE170C operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 153–187V breakdown range (tested at 1mA). It clamps transient energy to ≤244V within nanoseconds while sustaining 1500W peak pulse power per 10/1000μs waveform.
Its low dynamic impedance and <1μA leakage above 10V ensure minimal standby power loss. The device meets AEC-Q101 stress requirements and ISO 7637-2 immunity standards-critical for automotive body electronics and industrial control I/O protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 153 V / 187 V - Confirmed breakdown range at 1mA test current; defines reliable turn-on threshold under surge conditions. |
| VWM | 138 V - Maximum continuous reverse operating voltage; ensures no conduction during normal 138V rail operation. |
| VC @ IPP | 244 V @ 6.4 A - Clamped voltage during full 1500W transient; determines maximum stress on downstream ICs. |
| PPK | 1500 W - Peak pulse power rating per 10/1000μs waveform; validates robustness against automotive load dump and inductive switching. |
| IR @ VWM | <1 μA - Reverse leakage at 138V; guarantees negligible quiescent current in always-on systems. |
| TJ max | +175 °C - Maximum junction temperature; supports operation in under-hood or high-ambient industrial environments. |
| Package | DO-201 - Industry-standard axial leaded package with tin-plated leads; compatible with wave soldering and manual rework. |
Pinout & Package
DO-201 package: axial-leaded, molded epoxy case with cathode band marking for unidirectional polarity. 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 terminal | Connected to system ground or low-side return path; completes clamping loop during transient events. |
| Cathode | Protected line input | Connected to the line being protected (e.g., 138V supply rail); conducts avalanche current when VAK > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-enables use in engine control and ADAS power domains. |
| 1500W surge capability | Withstands 10/1000μs transients up to 1500W without degradation-meets ISO 7637-2 Pulse 5a (load dump) energy levels. |
| Clamping voltage ≤244V | Limits voltage overshoot across protected ICs during 6.4A surge-preserves functionality of 200V-rated MOSFETs or gate drivers. |
| Fast response time | <1.0 ps from 0V to VBR - Enables suppression before sensitive logic or analog circuitry experiences overvoltage damage. |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS directives-supports green manufacturing and export compliance. |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 12V/24V battery-fed ECUs from load dump and alternator transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges before they reach MCU power pins or CAN transceivers. Use Value: Limits peak rail voltage to 244V during 1500W transients-prevents latch-up or permanent damage to 3.3V/5V logic supplies downstream. | Use Scenario: Shielding digital input modules in programmable logic controllers from inductive kickback caused by relay or solenoid switching. IC Role / Device Role / Timing Role: Standoff protection element on 24V DC input lines, absorbing repetitive 10/1000μs spikes induced by contactor bounce. Use Value: Maintains VWM = 138V margin above 24V nominal-ensures zero false triggering while delivering sub-nanosecond response to fast-rising transients. |
| LED Driver Overvoltage Protection | Telecom Power Interface Protection |
Use Scenario: Safeguarding constant-current LED driver ICs in streetlight systems exposed to lightning-induced surges on AC mains or DC bus lines. IC Role / Device Role / Timing Role: Primary surge shunt on high-side output of buck controller feeding 170V LED strings. Use Value: Clamps to 244V at 6.4A-keeps LED string voltage within safe operating area of 300V-rated FETs and avoids thermal runaway. | Use Scenario: Front-end protection for 48V telecom power interfaces subjected to EFT bursts (IEC 61000-4-4) and surge events (IEC 61000-4-5). IC Role / Device Role / Timing Role: Secondary-level TVS after primary GDT or MOV, providing precise clamping for sensitive PMICs and interface ICs. Use Value: Delivers 244V clamping with <1μA leakage-preserves low-power sleep mode integrity while enabling fast recovery post-surge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170A | DO-214AA package; 170V standoff; 274V clamping at 5.5A; 600W rating | Lower power rating and higher clamping voltage; suited for space-constrained PCBs where 1500W is not required | Select SMBJ170A only if board layout restricts axial DO-201 placement and surge energy is limited to ≤600W. |
| 1.5SMC170A | DO-214AB package; same 170V nominal; 274V clamping at 5.5A; 1500W rating | Surface-mount alternative with identical power rating but different thermal profile due to SMC footprint | Choose 1.5SMC170A for automated assembly and improved thermal coupling to copper planes-requires PCB redesign. |
Compared with 1.5KE170C, SMBJ170A offers smaller footprint but reduced surge handling and higher clamping, while 1.5SMC170A matches power and voltage specs but shifts to SMD assembly-neither is pin-compatible, requiring mechanical and layout adaptation.
Availability
1.5KE170C is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC I/O hardening, and LED driver overvoltage safeguarding requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE170C 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 thyristors for automotive, industrial, and consumer markets.
The 1.5KE series was designed specifically for high-energy transient suppression in harsh environments-targeting ISO 7637-2 compliance and AEC-Q101 qualification for under-hood and factory-floor applications.
FAQ
What is the breakdown voltage range of the 1.5KE170C?
The 1.5KE170C has a guaranteed breakdown voltage range of 153 V to 187 V at 1 mA test current, as specified in Taiwan Semiconductor's official datasheet revision O2104. This range ensures consistent avalanche initiation across production lots and temperature extremes, critical for predictable clamping behavior in automotive power systems.
Is the 1.5KE170C unidirectional or bidirectional?
The 1.5KE170C is a unidirectional TVS diode, indicated by the "C" suffix and confirmed by its cathode band marking and single-polarity electrical specifications. It conducts only during reverse overvoltage events-unlike "CA" variants-and must be oriented with cathode toward the protected line to function correctly in 1.5KE170C applications.
What is the maximum clamping voltage of the 1.5KE170C at rated surge current?
The 1.5KE170C clamps to a maximum of 244 V at 6.4 A peak pulse current (IPP), measured under the standard 10/1000 μs waveform. This value is fixed per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during full-rated 1500W transient events.
Does the 1.5KE170C meet AEC-Q101 qualification?
Yes-the 1.5KE170C is explicitly listed as AEC-Q101 qualified in Taiwan Semiconductor's documentation. This certification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, validating its suitability for automotive powertrain and chassis applications where reliability is mission-critical.
What package type does the 1.5KE170C use, and what are its key mechanical features?
The 1.5KE170C uses the DO-201 axial package with pure tin-plated leads compliant with J-STD-002 solderability standards. Its molding compound meets UL 94V-0 flammability rating, and it passes JESD 201 Class 2 whisker testing-ensuring long-term mechanical integrity in vibration-prone automotive and industrial installations.
1.5KE170C 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):
- 138V
- Voltage - Breakdown (Min):
- 153V
- Voltage - Clamping (Max) @ Ipp:
- 244V
- Current - Peak Pulse (10/1000µs):
- 6.4A
- 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
1.5KE170C FAQ
1.How can I place an order for 1.5KE170C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE170C 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 1.5KE170C reliable?
The price and inventory of 1.5KE170C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE170C is usually 5 days.
3.What payment methods are accepted for 1.5KE170C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE170C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE170C?
1.5KE170C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE170C 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 1.5KE170C?
For technical support, including 1.5KE170C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE170C requirements.
6.How does Aetrix verify that 1.5KE170C is sourced from the original manufacturer or authorized distributors?
All 1.5KE170C 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 1.5KE170C meets industry standards.
7.What is the process for return or replacement of 1.5KE170C?
All 1.5KE170C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE170C, 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 1.5KE170C part is unused and in its original packaging.
Return procedure for 1.5KE170C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE170C Tags
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