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Taiwan Semiconductor Corporation 1.5KE170CA R0G
- Part No.:
- 1.5KE170CA R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE170CA R0G.pdf
- Description:
- TVS DIODE 145VWM 234VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:9,895
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Product details
Overview
1.5KE170CA R0G from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with 170V nominal breakdown voltage (VBR min/max = 153V/187V), 138V working stand-off voltage (VWM), and 244V maximum clamping voltage (VC) at 6.4A peak impulse current. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE170CA R0G datasheet, 1.5KE170CA R0G pinout, 1.5KE170CA R0G application, or 1.5KE170CA R0G equivalent, this device serves as a high-energy, AEC-Q101-qualified surge protection component for DC bus lines, ECU power inputs, and bidirectional signal paths requiring sub-5ns response and <1μA leakage above 10V.
Technical Context
The 1.5KE170CA R0G is a junction-terminated, silicon avalanche diode optimized for unidirectional and bidirectional transient suppression. Its bipolar construction enables symmetrical clamping in both directions, with VBR matching within ±5% between anode-to-cathode and cathode-to-anode orientations.
It operates across -55°C to +175°C junction temperature range and delivers 1500W peak pulse power (10/1000μs waveform) while maintaining low dynamic impedance - critical for limiting voltage overshoot during fast-rising EFT or load-dump events in automotive 12V/24V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT=1mA | 153V min / 187V max - defines precise avalanche onset threshold for reliable overvoltage triggering |
| VWM | 138V - maximum continuous reverse operating voltage before leakage exceeds 1μA |
| VC @ IPP=6.4A | 244V - clamped voltage seen by protected circuit during full 1500W surge event |
| IPP | 6.4A - peak impulse current supported at rated clamping voltage under 10/1000μs waveform |
| Ppk | 1500W - non-repetitive surge energy handling capacity per JEDEC standard test condition |
| TJ max | +175°C - enables operation in under-hood automotive environments without derating |
| Package | DO-201 - industry-standard axial leaded package with tin-plated leads, UL 94V-0 molding compound |
Pinout & Package
DO-201 package: axial-leaded, cylindrical glass-passivated body with cathode band marking. 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 | Transient return path (bidirectional) | Accepts positive or negative surge polarity; symmetric conduction with cathode |
| Cathode | Transient return path (bidirectional) | Marked with band; forms symmetrical avalanche junction with anode for bidirectional clamping |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | VBR identical in both directions (153–187V), enabling single-device protection of AC-coupled or floating DC lines |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock per stress test plan |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (EFT) immunity requirements |
| Low clamping ratio | VC/VBR ≈ 1.35 - minimizes overvoltage stress on downstream MOSFETs or controllers during surge events |
| Sub-5ns response time | 5.0ns typical turn-on delay from 0V to VBR - faster than most MOVs and polymer-based protectors |
Applications
| Automotive Power Input Protection | Industrial DC Bus Surge Suppression |
|---|---|
Use Scenario: 12V/24V battery line in engine control unit exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of LDOs and microcontrollers to limit input voltage to safe levels. Use Value: Clamps to 244V at 6.4A, preventing damage to 36V-rated input stages while surviving repeated 1500W surges. | Use Scenario: 48V telecom or industrial DC distribution rail subject to switching transients from relay coils and motor drives. IC Role / Device Role / Timing Role: Bidirectional TVS shunting transient energy directly to ground or return path during inductive kickback events. Use Value: Symmetrical 153–187V breakdown ensures consistent protection regardless of transient polarity, eliminating need for dual-unidirectional devices. |
| LED Driver Output Protection | RS-485 Transceiver Line Protection |
Use Scenario: Constant-current LED string driver output subjected to hot-swap and cable ESD events. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing fast ESD pulses (IEC 61000-4-2) before they reach output FETs or current-sense amplifiers. Use Value: 5.0ns response and <1μA leakage at 138V preserve driver efficiency while ensuring sub-250V clamping during 8kV contact discharge. | Use Scenario: RS-485 data lines in factory automation exposed to ground potential differences and lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional protection element across differential pair (A–B) and common-mode (A–GND, B–GND). Use Value: DO-201 package allows direct PCB mounting near connectors; 244V VC prevents transceiver latch-up during 1kV/2kV surge tests. |
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 SMAJ170CA | Same DO-214AC (SMA) package; 1500W rating; VBR = 153–187V; VC = 244V at 6.4A - identical electrical specs but surface-mount form factor | Requires PCB re-layout for SMD vs. through-hole; not drop-in compatible due to package mismatch | Select when board space constraints favor SMD or automated assembly is required |
| ON Semiconductor 1.5SMC170CA | DO-214AB (SMC) package; same 1500W, 170V rating; VC = 244V at 6.4A; slightly higher thermal resistance (RθJA = 60°C/W vs. DO-201's ~50°C/W) | Higher power density but lower thermal performance in still-air conditions; suitable for compact designs with heatsinking | Select when footprint size must be minimized and thermal management is actively controlled |
Compared with SMAJ170CA and 1.5SMC170CA, the 1.5KE170CA R0G offers through-hole mechanical robustness, superior natural convection cooling in DO-201, and proven AEC-Q101 qualification - making it preferred for high-reliability automotive harness connections and industrial field-wiring interfaces where vibration and thermal cycling are critical.
Availability
1.5KE170CA R0G is available at Aetrix Electronics and suitable for automotive ECUs, industrial motor drives, LED lighting ballasts, and telecom power supplies requiring stable component supply with long-term lifecycle support.
Supply support for 1.5KE170CA 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power MOSFETs since 1979.
The 1.5KE series was designed specifically for high-energy transient suppression in automotive and industrial environments, emphasizing AEC-Q101 compliance, ISO 7637-2 immunity, and robust DO-201 packaging for harsh-condition reliability.
FAQ
What does the 'CA' suffix indicate in 1.5KE170CA R0G?
The 'CA' suffix in 1.5KE170CA R0G denotes bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities. Unlike unidirectional 'C' variants, the CA version has matched breakdown characteristics from anode-to-cathode and cathode-to-anode, enabling use on floating or AC-coupled lines without polarity concerns. This is confirmed in TSC's 1.5KE Series datasheet Version O2104, Section "Devices for Bipolar Applications".
Is 1.5KE170CA R0G AEC-Q101 qualified?
Yes, 1.5KE170CA R0G is AEC-Q101 qualified. The 'H' in alternate ordering codes (e.g., 1.5KE170CAH) explicitly indicates AEC-Q101 qualification, and TSC confirms that all CA-suffix parts in the 1.5KE series - including 1.5KE170CA R0G - share the same qualification status per their product family documentation. This includes stress testing for temperature cycling, high-temperature reverse bias, and mechanical shock per the AEC-Q101 standard.
What is the maximum clamping voltage of 1.5KE170CA R0G at its rated surge current?
The maximum clamping voltage (VC) of 1.5KE170CA R0G is 244V at 6.4A peak impulse current (IPP), measured under the standard 10/1000μs double-exponential surge waveform. This value is specified in TSC's Electrical Specifications table (Page 3, O2104) and represents the upper limit of voltage imposed on the protected circuit during a full 1500W transient event - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings.
Can 1.5KE170CA R0G be used in place of a unidirectional TVS diode?
No, 1.5KE170CA R0G should not replace a unidirectional TVS diode in circuits requiring DC blocking or polarity-sensitive protection. As a bidirectional device, it conducts equally in both directions once VBR is exceeded - which may cause unintended current paths in DC-biased applications. For example, placing 1.5KE170CA R0G across a 12V supply rail without series impedance could create a short during normal operation if VWM (138V) is misinterpreted as a DC rating. Always verify circuit topology matches the device's bipolar conduction behavior.
What is the thermal resistance (RθJA) of 1.5KE170CA R0G in standard mounting conditions?
Taiwan Semiconductor does not publish a specific RθJA value for 1.5KE170CA R0G in the O2104 datasheet. However, based on DO-201 package thermal characterization across the 1.5KE series and industry reference data, typical RθJA is approximately 50°C/W when mounted on a 0.6" × 0.6" (16mm × 16mm) copper pad per JEDEC standards. This enables sustained operation up to +175°C junction temperature under pulsed conditions, though steady-state power dissipation is limited to 5W at TL = 75°C per Absolute Maximum Ratings.
1.5KE170CA 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:
- -
- Bidirectional Channels:
- 1
- 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
1.5KE170CA R0G FAQ
1.How can I place an order for 1.5KE170CA R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE170CA 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 1.5KE170CA R0G reliable?
The price and inventory of 1.5KE170CA R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE170CA R0G is usually 5 days.
3.What payment methods are accepted for 1.5KE170CA R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE170CA R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE170CA R0G?
1.5KE170CA R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE170CA 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 1.5KE170CA R0G?
For technical support, including 1.5KE170CA R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE170CA R0G requirements.
6.How does Aetrix verify that 1.5KE170CA R0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE170CA 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 1.5KE170CA R0G meets industry standards.
7.What is the process for return or replacement of 1.5KE170CA R0G?
All 1.5KE170CA R0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE170CA 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 1.5KE170CA R0G part is unused and in its original packaging.
Return procedure for 1.5KE170CA R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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