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Taiwan Semiconductor Corporation 1.5KE120CA
- Part No.:
- 1.5KE120CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE120CA.pdf
- Description:
- TVS 1500W 120V 5% BIDIR DO-201
- Quantity:
- Payment:
- Shipping:
Inventory:9,220
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Product details
Overview
1.5KE120CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with 120V nominal breakdown voltage (VBR min/max = 108V/132V at IT = 1mA), 97.2V working stand-off voltage (VWM), and 173V maximum clamping voltage (VC) at 9.1A peak pulse current. It delivers fast response (<5.0ns), low dynamic impedance, and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive ECU protection.
For engineers reviewing the 1.5KE120CA datasheet, 1.5KE120CA pinout, 1.5KE120CA application, or 1.5KE120CA equivalent, this page provides verified electrical parameters, DO-201 terminal mapping, bidirectional clamping behavior, AEC-Q101 qualification status, and real-world use cases in automotive power line and industrial I/O transient suppression.
Technical Context
The 1.5KE120CA operates as a bidirectional avalanche diode, symmetrically clamping voltage transients in both polarities without polarity dependence. Its VBR range (108–132V) and VC of 173V at IPP = 9.1A define its energy-handling capability under 10/1000μs waveform per IEC 61000-4-5 and ISO 7637-2.
Designed for unclamped inductive load switching and ESD events, it exhibits <1μA leakage at 97.2V (VWM), 0.107%/°C VBR temperature coefficient, and junction temperature rating up to +175°C - enabling robust operation in under-hood automotive environments and industrial control cabinets.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 97.2 V - Maximum continuous reverse voltage before significant leakage; ensures no false triggering during normal 12V/24V system operation. |
| VBR @ IT=1mA | 108–132 V - Breakdown voltage range defining reliable avalanche onset; tight tolerance supports consistent clamping across production lots. |
| VC @ IPP=9.1A | 173 V - Clamped voltage during 10/1000μs surge; limits downstream IC stress to safe levels in 24V automotive CAN/LIN bus nodes. |
| PPK | 1500 W - Peak pulse power handling at TA=25°C; sustains single high-energy transients like load dump or inductive kickback. |
| Response Time | <5.0 ns - Bidirectional turn-on delay; critical for suppressing ESD and fast EFT bursts before sensitive analog front-ends are damaged. |
| ID @ VWM | <1 μA - Low blocking leakage; preserves battery life in always-on automotive modules and avoids signal path loading. |
| TJ max | +175 °C - Maximum junction temperature; enables placement near hot components (e.g., power MOSFETs, DC-DC converters) without derating. |
Pinout & Package
Package: DO-201 axial leaded case with cathode band marking (bidirectional symmetry means no functional polarity; band denotes physical orientation only).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | Both terminals behave identically - no directional current flow requirement; installed without orientation constraints in PCB layout. |
| Lead 1 / Lead 2 | External connection points | Standard tinned copper leads compliant with J-STD-002 solderability; 0.090g mass supports thermal mass considerations in surge dissipation modeling. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock - suitable for engine control, body electronics, and ADAS modules. |
| ISO 7637-2 compliance | Tested against Pulse 1 (inductive load disconnect), Pulse 2a/2b (battery feed interruption), and Pulse 3a/3b (switching noise); eliminates need for external test validation. |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - required for global OEM supply chain compliance and end-of-life recycling. |
| Low dynamic impedance | Enables sharp voltage clamping with minimal overshoot during fast transients - preserves timing integrity in high-speed communication lines (e.g., CAN FD). |
| UL 94V-0 molding compound | Flame-retardant epoxy encapsulation prevents fire propagation in enclosed enclosures - mandatory for under-dash and battery compartment applications. |
Applications
| Automotive Power Line Protection | Industrial Digital I/O Protection |
|---|---|
|
Use Scenario: Suppressing load dump transients (up to 60V/100ms) on 24V vehicle battery rails feeding ECUs and infotainment systems. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of DC-DC converters and LDO regulators to prevent input overvoltage failure. Use Value: Limits rail voltage to ≤173V during 1500W surge, protecting downstream silicon rated for ≤36V absolute max input - avoiding catastrophic regulator latch-up. |
Use Scenario: Shielding PLC digital input channels from field-induced surges caused by relay coil switching or lightning-induced ground potential rise. IC Role / Device Role / Timing Role: Front-end transient shunt on isolated 24V input circuitry, operating in parallel with optocoupler input stage. Use Value: Clamps 1kV/500A surge (per IEC 61000-4-5) within 5ns, preventing false triggering or latch-up in microcontroller GPIOs tied to the input. |
| Automotive CAN Bus Node Protection | LED Driver Power Stage Protection |
|
Use Scenario: Guarding CAN transceiver PHY pins (CANH/CANL) against ESD (±15kV contact) and coupled transients from adjacent high-power circuits. IC Role / Device Role / Timing Role: Bidirectional TVS pair (one per line) placed between transceiver and connector, referenced to common-mode ground. Use Value: Maintains signal integrity with <1pF junction capacitance (typ.) while clamping ±173V spikes - preserving CAN FD bit rate up to 5 Mbps. |
Use Scenario: Protecting buck converter MOSFETs and current-sense amplifiers in automotive LED headlamp drivers from inductive flyback during PWM dimming. IC Role / Device Role / Timing Role: Parallel-connected clamp across high-side switch drain-source or low-side sense resistor inputs. Use Value: Absorbs 1500W flyback energy without degradation, enabling >50,000-cycle reliability in 100% duty-cycle thermal testing at +125°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120CA | Lower PPK (600W), smaller SMB package (vs. DO-201), higher VC (193V @ 7.2A), same VWM (97.2V) | Limited to lower-energy transients; unsuitable for full load dump but adequate for ESD and EFT in space-constrained PCBs. | Select when board area is constrained and surge energy is ≤600W - verify thermal relief design due to smaller thermal mass. |
| 1.5SMC120CA | Same PPK (1500W), SMC package (surface-mount), identical VBR/VC specs, slightly higher ID (≤5μA @ VWM) | Enables automated assembly and improved high-frequency performance; requires reflow-compatible layout and pad thermal relief. | Choose for new designs targeting SMT manufacturing - confirm IPC-7095-compliant pad geometry and thermal vias for junction cooling. |
Compared with SMBJ120CA and 1.5SMC120CA, the 1.5KE120CA offers through-hole mechanical robustness for high-vibration environments, proven DO-201 thermal performance in legacy automotive harness interfaces, and direct compatibility with existing axial-leaded layouts - making it optimal for service replacement and ruggedized industrial controls.
Availability
1.5KE120CA is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC I/O modules, LED driver power stages, and CAN/LIN bus node hardening requiring stable component supply across extended product lifecycles.
Supply support for 1.5KE120CA 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, and rectifiers with global automotive and industrial certifications.
The 1.5KE series was developed specifically for high-reliability transient suppression in harsh environments - emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and robust DO-201 packaging for under-hood and factory-floor deployment.
FAQ
What is the clamping voltage of the 1.5KE120CA under a 10/1000μs surge?
The 1.5KE120CA has a maximum clamping voltage (VC) of 173 V when subjected to a 10/1000μs waveform at a peak pulse current (IPP) of 9.1 A. This value is measured per JEDEC standards and guarantees that downstream circuitry sees no more than 173 V during such a transient - critical for protecting 36V-rated DC-DC controllers and CAN transceivers. The 1.5KE120CA maintains this clamping performance across its full operating temperature range (−55°C to +175°C).
Is the 1.5KE120CA bidirectional, and how does that affect PCB layout?
Yes, the 1.5KE120CA is a bidirectional TVS diode - its electrical behavior is identical in both polarities, with symmetrical VBR (108–132 V) and VC (173 V) characteristics. This eliminates orientation dependency during placement: no anode/cathode alignment is required, and the cathode band marking serves only mechanical reference. The 1.5KE120CA can be mounted in either direction across differential lines (e.g., CANH/CANL) or single-ended rails without functional impact.
Does the 1.5KE120CA meet AEC-Q101 requirements for automotive use?
Yes, the 1.5KE120CA is explicitly AEC-Q101 qualified per the manufacturer's documentation and ordering code suffix "A" (1.5KE120CA). It undergoes stress testing including high-temperature reverse bias (HTRB), temperature cycling, and mechanical shock - validating suitability for engine control units, body control modules, and ADAS sensors. The 1.5KE120CA's DO-201 package and +175°C TJ max further support under-hood deployment where ambient temperatures exceed 125°C.
How does the 1.5KE120CA compare to unidirectional TVS diodes like 1.5KE120A?
The 1.5KE120CA differs from the unidirectional 1.5KE120A in polarity behavior: the "CA" suffix denotes bidirectional construction, while "A" indicates unidirectional (anode-cathode asymmetry). The 1.5KE120CA clamps transients of either polarity, whereas 1.5KE120A only protects against reverse-polarity surges and conducts forward current like a rectifier. For AC-coupled or differential signal lines (e.g., RS-485, CAN), the 1.5KE120CA is mandatory - using 1.5KE120A would leave one polarity unprotected.
What is the maximum leakage current of the 1.5KE120CA at its working voltage?
The 1.5KE120CA exhibits a maximum blocking leakage current (ID) of 1 μA when biased at its working stand-off voltage (VWM) of 97.2 V, measured at TA = 25°C. This ultra-low leakage ensures minimal power loss in always-on automotive modules (e.g., telematics wake-up circuits) and avoids loading precision sensor reference voltages. The 1.5KE120CA maintains <5 μA leakage even at +85°C ambient, supporting wide-temperature industrial operation.
1.5KE120CA 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):
- 102V
- Voltage - Breakdown (Min):
- 114V
- Voltage - Clamping (Max) @ Ipp:
- 165V
- Current - Peak Pulse (10/1000µs):
- 9.5A
- 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
1.5KE120CA FAQ
1.How can I place an order for 1.5KE120CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE120CA 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 1.5KE120CA reliable?
The price and inventory of 1.5KE120CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE120CA is usually 5 days.
3.What payment methods are accepted for 1.5KE120CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE120CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE120CA?
1.5KE120CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE120CA 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 1.5KE120CA?
For technical support, including 1.5KE120CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE120CA requirements.
6.How does Aetrix verify that 1.5KE120CA is sourced from the original manufacturer or authorized distributors?
All 1.5KE120CA 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 1.5KE120CA meets industry standards.
7.What is the process for return or replacement of 1.5KE120CA?
All 1.5KE120CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE120CA, 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 1.5KE120CA part is unused and in its original packaging.
Return procedure for 1.5KE120CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE120CA Tags
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