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Taiwan Semiconductor Corporation 1.5KE75CA
- Part No.:
- 1.5KE75CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE75CA.pdf
- Description:
- TVS 1500W 75.1V 5% BIDIR DO-201
- Quantity:
- Payment:
- Shipping:
Inventory:3,206
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Product details
Overview
1.5KE75CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 75V, working stand-off voltage 60.7V, clamping voltage 108V at 14A peak pulse current, and AEC-Q101 qualification for automotive-grade surge protection.
For engineers reviewing the 1.5KE75CA datasheet, 1.5KE75CA pinout, 1.5KE75CA application, or 1.5KE75CA equivalent, this TVS diode serves as a robust, low-leakage (≤1 µA @ 60.7V), fast-response (<5 ns) overvoltage clamp for DC power rails, signal lines, and ESD-sensitive interfaces in harsh environments.
Technical Context
The 1.5KE75CA operates as a bidirectional avalanche diode, symmetrically clamping transients above ±75V in both polarities. Its 10/1000µs waveform rating delivers 1500W peak pulse power with 108V clamping at 14A, and junction temperature range spans −55°C to +175°C.
It meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump and inductive-switching immunity. With <1 µA blocking leakage at VWM and 0.105%/°C VBR temperature coefficient, it ensures stable clamping across thermal operating conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 67.5 V / 82.5 V at 1.0 mA test current - defines reliable avalanche onset window under standardized bias |
| VWM | 60.7 V - maximum continuous DC or RMS voltage the device blocks without significant leakage |
| VC @ IPP | 108 V at 14 A peak pulse - clamped voltage during worst-case 10/1000µs surge, limiting downstream stress |
| PPK | 1500 W - peak transient power handling capability per JEDEC standard waveform |
| IPP | 14 A - maximum non-repetitive surge current the device safely clamps without failure |
| TJ max | +175 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Leakage @ VWM | ≤1 µA - ensures minimal standby power loss and no interference with high-impedance sensing circuits |
Pinout & Package
DO-201 axial-leaded package with cathode band marking; bidirectional symmetry means no polarity-dependent orientation-leads are interchangeable for AC-coupled or differential line protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (lead 1 & 2) | Bidirectional avalanche junction terminals | Identical conduction/clamping behavior in either direction; no functional distinction between leads |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and infotainment power rails |
| ISO 7637-2 compliance | Guarantees immunity to load dump (Pulse 5a), inductive switching (Pulse 1/2a/2b), and EFT (Pulse 3a/3b) |
| Clamping response time | <5 ns - limits voltage overshoot before protection engages, critical for protecting fast logic and analog ICs |
| Low dynamic impedance | Ensures consistent VC across varying surge amplitudes, improving predictability of protected circuit stress |
| Halogen-free & RoHS compliant | Meets environmental compliance requirements for global automotive and industrial end markets |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V/24V battery-fed ECUs exposed to load dump and alternator transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed at input filter stage to clamp surges before LDOs and microcontrollers. Use Value: Limits rail voltage to ≤108V during 1500W pulses, preventing latch-up or gate oxide damage in downstream silicon. |
Use Scenario: 4–20 mA current-loop sensors in factory automation subject to EFT and cable coupling. IC Role / Device Role / Timing Role: Parallel-connected TVS across sensor output terminals to shunt fast transients. Use Value: Sub-5 ns response prevents transient-induced data corruption or ADC saturation in precision analog front-ends. |
| LED Driver Overvoltage Clamp | RS-485 Bus Transient Suppression |
Use Scenario: Constant-current LED drivers in outdoor lighting subjected to lightning-induced surges. IC Role / Device Role / Timing Role: TVS across driver output to absorb inductive kickback and grid-coupled spikes. Use Value: 108V clamping protects MOSFET switches and current-sense resistors rated for ≤120V operation. |
Use Scenario: RS-485 transceivers in building management systems connected to long unshielded cables. IC Role / Device Role / Timing Role: Bidirectional TVS on differential pair (A/B) referenced to ground. Use Value: Symmetric clamping maintains common-mode integrity while limiting differential overvoltage to safe levels for transceiver I/O cells. |
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 SMAJ75CA | Same DO-214AC (SMA) package; lower PPK = 400W; VC = 121V @ 3.3A | Lower surge capacity suits consumer-grade or low-energy industrial signals-not automotive load dump | Select when space-constrained PCB layout favors surface-mount and surge energy is ≤400W |
| ON Semiconductor 1.5SMC75CA | DO-214AB (SMC) package; PPK = 1500W; VC = 115V @ 13A; slightly higher clamping voltage | Same energy rating but larger footprint; thermal performance differs due to package mass and pad layout | Choose when existing SMC footprint is standardized and board-level thermal design accommodates larger case size |
Compared with SMAJ75CA and 1.5SMC75CA, the 1.5KE75CA offers identical 1500W surge rating and tighter clamping (108V vs. 115V/121V) in the legacy DO-201 through-hole package-ideal for high-reliability automotive modules where proven mechanical robustness and lead-forming flexibility are prioritized.
Availability
1.5KE75CA is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, LED lighting controllers, and RS-485 communication nodes requiring stable component supply and AEC-Q101-compliant surge resilience.
Supply support for 1.5KE75CA 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 automotive power distribution and industrial control systems-emphasizing AEC-Q101 reliability, ISO 7637-2 compliance, and robust DO-201 packaging.
FAQ
What does the 'CA' suffix indicate in 1.5KE75CA?
The 'CA' suffix in 1.5KE75CA denotes a bidirectional configuration-meaning the device provides symmetrical transient clamping for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., 1.5KE75A), the 1.5KE75CA has no anode/cathode polarity and functions identically regardless of voltage polarity applied across its leads.
Is 1.5KE75CA AEC-Q101 qualified?
Yes, the 1.5KE75CA is AEC-Q101 qualified-verified per the full stress-test suite including high-temperature reverse bias, temperature cycling, and highly accelerated life testing. This qualification confirms suitability for automotive powertrain, chassis, and body electronics where reliability under thermal and electrical stress is mandatory.
What is the maximum clamping voltage of 1.5KE75CA during a surge event?
The maximum clamping voltage (VC) of 1.5KE75CA is 108 V at a peak pulse current (IPP) of 14 A under the standard 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and represents the highest voltage seen across the device during worst-case transient conditions.
Can 1.5KE75CA be used in place of a unidirectional TVS like 1.5KE75A?
No-1.5KE75CA cannot directly replace 1.5KE75A in unidirectional applications without circuit review. While both share identical VBR and PPK, the 1.5KE75A is polarity-sensitive (cathode-banded) and only clamps positive transients; substituting the bidirectional 1.5KE75CA may alter DC biasing or fail to meet system-level polarity requirements in rectified or single-supply designs.
Does 1.5KE75CA meet ISO 7637-2 for automotive immunity testing?
Yes, the 1.5KE75CA meets ISO 7637-2 requirements for Pulses 1, 2a, 2b, 3a, and 3b-covering key automotive transient threats including inductive switch-off, supply disconnection, and electrostatic discharge coupling. This compliance is documented in Taiwan Semiconductor's official qualification reports and application notes for the 1.5KE series.
1.5KE75CA 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):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 15A
- 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
1.5KE75CA FAQ
1.How can I place an order for 1.5KE75CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE75CA 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 1.5KE75CA reliable?
The price and inventory of 1.5KE75CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE75CA is usually 5 days.
3.What payment methods are accepted for 1.5KE75CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE75CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE75CA?
1.5KE75CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE75CA 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 1.5KE75CA?
For technical support, including 1.5KE75CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE75CA requirements.
6.How does Aetrix verify that 1.5KE75CA is sourced from the original manufacturer or authorized distributors?
All 1.5KE75CA 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 1.5KE75CA meets industry standards.
7.What is the process for return or replacement of 1.5KE75CA?
All 1.5KE75CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE75CA, 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 1.5KE75CA part is unused and in its original packaging.
Return procedure for 1.5KE75CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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