My Inquiry
My Account
Taiwan Semiconductor Corporation 1.5KE170CA
- Part No.:
- 1.5KE170CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE170CA.pdf
- Description:
- TVS 1500W 170.5V 5% BIDIR DO-201
- Quantity:
- Payment:
- Shipping:
Inventory:2,260
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE170CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 170V, clamping voltage 244V at 6.4A peak impulse 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 1.5KE170CA datasheet, 1.5KE170CA pinout, 1.5KE170CA application, or 1.5KE170CA equivalent, this part delivers AEC-Q101-qualified surge immunity for 12V/24V vehicle electronics, high-voltage DC bus protection, and ESD-hardened interface circuits requiring low-leakage (<1 µA @ 138V) and sub-nanosecond response.
Technical Context
The 1.5KE170CA operates as a bidirectional avalanche diode, symmetrically clamping voltage surges above ±153V (min VBR) and below ±187V (max VBR) with 1.0mA test current. Its junction temperature range spans −55°C to +175°C, enabling under-hood deployment without derating up to 75°C ambient.
It sustains 1500W non-repetitive peak pulse power per 10/1000µs waveform, with clamping voltage limited to 244V at 6.4A IPP - critical for preserving downstream MOSFET gate drivers and MCU I/O stages during load dump events. Thermal resistance is optimized for DO-201 mounting on 16mm × 16mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 153V / 187V - defines precise clamping onset threshold in both directions; ensures reliable triggering before sensitive ICs exceed absolute maximum ratings |
| VWM | 138V - maximum continuous reverse operating voltage; allows safe placement across 120VAC-derived DC rails or 100V automotive systems |
| VC @ IPP | 244V @ 6.4A - peak clamped voltage during 10/1000µs surge; determines residual stress on protected circuitry |
| PPK | 1500W - single-pulse energy handling capacity; supports ISO 7637-2 Pulse 5a (load dump) compliance without degradation |
| ID @ VWM | <1 µA - ultra-low leakage at rated stand-off; prevents battery drain in always-on automotive modules |
| TJ max | +175°C - extended junction temperature rating enables use near power converters and motor drivers without thermal derating |
| Package | DO-201 - industry-standard axial leaded package with UL 94V-0 molding compound and pure tin-plated leads compliant with J-STD-002 |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking (bidirectional symmetry means no polarity-dependent orientation; cathode band indicates terminal identification per JEDEC standard).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (marked end) | Surge return path (bidirectional) | Provides symmetrical conduction path for positive and negative transients; connects to ground or low-impedance reference plane |
| Cathode (band end) | Surge return path (bidirectional) | Identical function to anode due to bidirectional construction; terminal labeling follows DO-201 mechanical convention only |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per JESD47 |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance stabilization network) requirements |
| Low dynamic impedance | Enables rapid voltage clamping with minimal overshoot during fast-rising EFT bursts (e.g., 5ns rise time) |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained applications |
| 175°C junction rating | Supports operation adjacent to high-power components in engine control units and ADAS domain controllers without thermal throttling |
Applications
| Automotive Load Dump Protection | Industrial DC Bus Transient Suppression |
|---|---|
Use Scenario: 12V/24V vehicle electrical system subjected to alternator load dump pulses exceeding 100V for 400ms. IC Role / Device Role / Timing Role: Bidirectional TVS placed across main power input to clamp surge energy before it reaches power management ICs and microcontrollers. Use Value: Limits peak voltage to 244V, preventing latch-up or permanent damage to 3.3V/5V logic supplies derived from the same rail. |
Use Scenario: 300–400V DC link in motor drives or solar inverters exposed to switching-induced voltage spikes. IC Role / Device Role / Timing Role: Primary overvoltage clamp parallel to bulk capacitor, absorbing repetitive 1500W surges without thermal runaway. Use Value: Maintains <1µA leakage at 138V stand-off, avoiding unnecessary power loss while delivering 244V clamping under worst-case 10/1000µs transients. |
| ESD-Protected Communication Interface | Lighting System Surge Immunity |
Use Scenario: CAN FD or LIN transceiver lines in automotive body control modules subject to ±8kV contact ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Secondary-level TVS on signal lines, coordinated with primary front-end filtering to reduce ESD-induced bit errors. Use Value: Sub-5ns response time ensures clamping initiates before transceiver internal protection fails, preserving data integrity during fast transients. |
Use Scenario: LED driver inputs in commercial street lighting exposed to lightning-induced surges on AC mains feeders. IC Role / Device Role / Timing Role: First-stage protector on rectified AC input, shunting multi-kW surges before they reach bridge rectifier and PWM controller. Use Value: 1500W peak power rating handles 10/1000µs lightning surges per IEC 61000-4-5 Level 4, extending system MTBF in outdoor deployments. |
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; lower PPK (400W); higher VC (274V @ 5.5A); 175°C TJ max | Lower surge capacity limits use to non-load-dump scenarios; better suited for board-level ESD vs. system-level transients | Select when space-constrained layouts require surface-mount packaging and surge energy is ≤400W |
| ON Semiconductor 1.5SMC170CA | DO-214AB (SMC) package; identical 1500W rating; slightly higher VBR (156–184V); same 244V VC | Higher thermal mass improves repetitive surge endurance; larger footprint requires PCB area trade-off | Select when enhanced thermal performance is prioritized over compactness, especially in high-duty-cycle industrial environments |
Compared with 1.5KE170CA, SMAJ170CA offers smaller size but reduced surge robustness, while 1.5SMC170CA provides superior thermal dissipation at the cost of board space - making 1.5KE170CA optimal for cost-sensitive, high-energy automotive and industrial applications where DO-201 axial mounting is acceptable.
Availability
1.5KE170CA is available at Aetrix Electronics and suitable for automotive electronics, industrial motor controls, and LED lighting systems requiring stable component supply across long production lifecycles.
Supply support for 1.5KE170CA 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 power management, protection, and signal conditioning devices.
The 1.5KE series was designed specifically for high-energy transient suppression in automotive and industrial environments, emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and extended temperature operation.
FAQ
What is the clamping voltage of the 1.5KE170CA under a 10/1000µs surge?
The 1.5KE170CA clamps to a maximum of 244V at 6.4A peak impulse current (IPP) under the standardized 10/1000µs waveform. This value is measured per JEDEC test conditions and represents the upper limit of voltage seen by downstream circuitry during worst-case transient events - critical for ensuring compatibility with 200V-rated capacitors and 250V MOSFETs in the protected stage.
Is the 1.5KE170CA unidirectional or bidirectional?
The 1.5KE170CA is a bidirectional TVS diode, indicated by the "CA" suffix per industry convention. Its symmetrical breakdown behavior (VBR min/max = 153V/187V in both polarities) enables direct placement across AC-coupled lines or floating DC rails without polarity concerns - unlike unidirectional variants (e.g., 1.5KE170C) which require correct anode/cathode orientation.
Does the 1.5KE170CA meet AEC-Q101 requirements?
Yes, the 1.5KE170CA is explicitly AEC-Q101 qualified, as confirmed in Taiwan Semiconductor's official documentation. This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - validating its suitability for automotive powertrain, chassis, and body electronics applications.
What is the maximum working voltage (VWM) for the 1.5KE170CA?
The 1.5KE170CA has a maximum working stand-off voltage (VWM) of 138V, meaning it remains in high-impedance state below this DC or RMS voltage level. This allows safe integration into 100V-class DC systems (e.g., 48V mild hybrid architectures) while maintaining <1µA leakage - essential for low-power always-on modules such as telematics control units.
How does the 1.5KE170CA compare to the 1.5KE170A variant?
The 1.5KE170CA differs from the 1.5KE170A in both polarity and voltage tolerance: 1.5KE170CA is bidirectional with VBR 153–187V, whereas 1.5KE170A is unidirectional with tighter VBR tolerance (162–179V) and forward voltage drop (~3.5V). The "CA" suffix confirms symmetrical clamping, making 1.5KE170CA appropriate for AC or differential signal protection where polarity reversal may occur.
1.5KE170CA 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):
- 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 FAQ
1.How can I place an order for 1.5KE170CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE170CA 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 reliable?
The price and inventory of 1.5KE170CA 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 is usually 5 days.
3.What payment methods are accepted for 1.5KE170CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE170CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE170CA?
1.5KE170CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE170CA 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?
For technical support, including 1.5KE170CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE170CA requirements.
6.How does Aetrix verify that 1.5KE170CA is sourced from the original manufacturer or authorized distributors?
All 1.5KE170CA 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 meets industry standards.
7.What is the process for return or replacement of 1.5KE170CA?
All 1.5KE170CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE170CA, 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 part is unused and in its original packaging.
Return procedure for 1.5KE170CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE170CA Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
