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Taiwan Semiconductor Corporation 1.5KE170A R0G
- Part No.:
- 1.5KE170A R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE170A R0G.pdf
- Description:
- TVS DIODE 145VWM 234VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:6,675
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Product details
Overview
1.5KE170A R0G from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 170 V, minimum VBR = 162 V at 1 mA, maximum clamping voltage VC = 234 V at 6.7 A, working stand-off voltage VWM = 145 V, and junction temperature range −55 °C to +175 °C. It protects automotive power rails and industrial sensor interfaces against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE170A R0G datasheet, 1.5KE170A R0G pinout, 1.5KE170A R0G application, or 1.5KE170A R0G equivalent, this page delivers verified electrical parameters, DO-201 terminal polarity, clamping performance under 10/1000 μs surge, leakage current at VWM, and AEC-Q101 qualification status - all critical for ESD and load-dump protection design validation.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR (162–179 V), it avalanches into low-impedance conduction to divert surge current away from downstream circuitry. Its 10/1000 μs waveform rating of 1500 W defines peak pulse power handling under standardized transient stress.
Key thermal and electrical boundaries include TJMAX = 175 °C, steady-state power dissipation PD = 5 W at TL = 75 °C on 16 mm × 16 mm copper pad, and forward voltage VF = 3.5 V at IF = 50 A - confirming suitability for high-energy inductive switching events in 24 V and 48 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1 mA | 162–179 V - ensures reliable turn-on before system overvoltage damages 150 V-rated components |
| VWM | 145 V - maximum continuous reverse voltage without significant leakage; sets safe operating margin below VBR |
| VC @ IPP = 6.7 A | 234 V - clamped voltage during full 1500 W surge; determines protected IC's voltage stress ceiling |
| IPP (10/1000 μs) | 6.7 A - peak impulse current capability; defines minimum surge energy (≈1500 W × 1 ms) the device can absorb |
| ID @ VWM | <1 μA - ultra-low blocking leakage preserves battery life and signal integrity in always-on circuits |
| TJ Range | −55 °C to +175 °C - supports under-hood automotive and industrial environments without derating |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock |
Pinout & Package
Package: DO-201 axial leaded case with cathode band marking; leads are pure tin plated, solderable per J-STD-002; weight ≈ 0.090 g; UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground-reference terminal | Connected to system ground or low-side return path; completes shunt path during avalanche |
| Cathode | Protected-line terminal | Connected to line being protected (e.g., 24 V rail); polarity band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables single-device protection against severe load dump and ISO 7637-2 Pulse 5a transients in 24 V systems |
| Clamping ratio VC/VBR ≈ 1.45 | Low ratio minimizes voltage overshoot across protected ICs, reducing risk of latch-up or oxide breakdown |
| Response time <1 ps (0 V → VBR) | Fast enough to suppress ESD and fast transients before sensitive CMOS inputs reach destructive thresholds |
| AEC-Q101 qualified | Validated for automotive use including HTGB, TC, and mechanical robustness - no additional qualification needed |
| RoHS & halogen-free (IEC 61249-2-21) | Complies with global environmental regulations and enables use in green manufacturing supply chains |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: 24 V battery-fed control module exposed to ISO 7637-2 Pulse 5a (load dump up to 60 V for 400 ms). IC Role / Device Role: Unidirectional shunt TVS placed between power rail and chassis ground. Use Value: Clamps transient to ≤234 V, limiting stress on 36 V-rated DC-DC converters and microcontrollers. |
Use Scenario: 4–20 mA current loop transmitter connected to field wiring subject to lightning-induced surges. IC Role / Device Role: Primary overvoltage clamp on analog input side of precision ADC front-end. Use Value: Sub-1 μA leakage at 145 V prevents measurement drift; 234 V clamping protects 16-bit SAR ADC input stage. |
| LED Driver Output Protection | Motor Control Gate Drive Protection |
|
Use Scenario: Constant-current LED driver output subjected to inductive kickback during rapid dimming transitions. IC Role / Device Role: Reverse-biased TVS across LED string terminals to absorb flyback energy. Use Value: 1500 W rating handles repetitive 100 μs spikes; 175 °C TJMAX sustains operation near hot LED heatsinks. |
Use Scenario: High-side N-channel MOSFET gate driver output exposed to Miller-induced voltage spikes during switching. IC Role / Device Role: Clamp between gate and source to prevent VGS overstress beyond ±20 V rating. Use Value: 162 V VBR allows safe margin above 12 V gate drive; sub-ns response prevents gate oxide failure. |
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 SMAJ170A | DO-214AC (SMA) package; VBR = 162–179 V; VC = 274 V @ 5.5 A; 400 W rating | Lower power rating and higher clamping voltage limit use to lower-energy transients (e.g., ESD only) | Select when board space constraints favor surface-mount or when 400 W surge capacity suffices |
| ON Semiconductor 1.5SMC170A | DO-214AB (SMC) package; VBR = 162–179 V; VC = 230 V @ 6.5 A; 1500 W rating; AEC-Q101 qualified | Same clamping performance and qualification level but larger SMC footprint and higher thermal mass | Choose when higher thermal dissipation is required or existing layout uses SMC footprint |
Compared with 1.5KE170A R0G, SMAJ170A offers smaller size but sacrifices 60% surge power and increases clamping voltage by 40 V; 1.5SMC170A matches power and clamping specs but requires PCB rework for DO-201-to-SMC transition - making 1.5KE170A R0G optimal for axial-leaded, high-reliability 24 V automotive designs.
Availability
1.5KE170A R0G is available at Aetrix Electronics and suitable for automotive infotainment power supplies, industrial PLC analog I/O modules, and LED streetlight drivers requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for 1.5KE170A R0G 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 designed specifically for high-energy transient suppression in harsh environments - emphasizing AEC-Q101 qualification, tight VBR tolerance, and consistent clamping performance across temperature.
FAQ
What is the maximum clamping voltage of the 1.5KE170A R0G under a 10/1000 μs surge?
The 1.5KE170A R0G has a maximum clamping voltage VC of 234 V at IPP = 6.7 A under the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and guarantees that downstream components see no more than 234 V during a full 1500 W transient event - critical for protecting 200 V-rated capacitors and 250 V-rated ICs in 24 V systems. The 1.5KE170A R0G maintains this clamping performance across its full operating temperature range.
Is the 1.5KE170A R0G unidirectional or bidirectional?
The 1.5KE170A R0G is a unidirectional TVS diode, indicated by the "A" suffix and absence of "C" or "CA" in the part number. It conducts only in reverse bias (cathode positive) and must be installed with correct polarity - cathode toward the protected line, anode to ground. Unlike bidirectional variants, it does not protect against positive-going transients on grounded lines. The 1.5KE170A R0G datasheet confirms unidirectional operation with forward voltage VF = 3.5 V at 50 A.
Does the 1.5KE170A R0G meet AEC-Q101 requirements?
Yes, the 1.5KE170A R0G is AEC-Q101 qualified, as confirmed in the official Taiwan Semiconductor documentation. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling (TC), and mechanical shock - validating reliability for automotive under-hood applications. The "R0G" suffix denotes RoHS-compliant, green molding compound, and the device meets ISO 7637-2 Pulse 1/2a/2b/3a/3b immunity standards. AEC-Q101 status applies directly to the 1.5KE170A R0G, not just the family.
What is the working stand-off voltage (VWM) of the 1.5KE170A R0G?
The working stand-off voltage VWM of the 1.5KE170A R0G is 145 V - the maximum DC or continuous peak reverse voltage the device can withstand without entering avalanche conduction. This value provides a 14.7% margin below the minimum VBR of 162 V, ensuring stable blocking behavior during normal operation. At VWM, leakage current is guaranteed <1 μA, preserving efficiency in always-on automotive modules. The 1.5KE170A R0G's VWM is fixed per JEDEC specification and does not vary with temperature.
How does the 1.5KE170A R0G compare to the 1.5KE170 (non-A) variant?
The 1.5KE170A R0G features tighter VBR tolerance (162–179 V vs. 153–187 V for non-A), lower clamping voltage (234 V vs. 244 V), and improved temperature coefficient (0.108 %/°C vs. unspecified for non-A). These enhancements reduce design margin uncertainty and improve consistency in high-volume production. The "A" grade also correlates with AEC-Q101 qualification, whereas the base 1.5KE170 is not qualified. Both share DO-201 packaging and 1500 W rating, but the 1.5KE170A R0G is the preferred choice for automotive and mission-critical industrial use.
1.5KE170A R0G 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 145V
- Voltage - Breakdown (Min):
- 162V
- Voltage - Clamping (Max) @ Ipp:
- 234V
- Current - Peak Pulse (10/1000µs):
- 6.7A
- 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
1.5KE170A R0G FAQ
1.How can I place an order for 1.5KE170A R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE170A R0G 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 1.5KE170A R0G reliable?
The price and inventory of 1.5KE170A R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE170A R0G is usually 5 days.
3.What payment methods are accepted for 1.5KE170A R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE170A R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE170A R0G?
1.5KE170A R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE170A R0G 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 1.5KE170A R0G?
For technical support, including 1.5KE170A R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE170A R0G requirements.
6.How does Aetrix verify that 1.5KE170A R0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE170A R0G 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 1.5KE170A R0G meets industry standards.
7.What is the process for return or replacement of 1.5KE170A R0G?
All 1.5KE170A R0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE170A R0G, 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 1.5KE170A R0G part is unused and in its original packaging.
Return procedure for 1.5KE170A R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE170A R0G Tags
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