My Inquiry
My Account
Taiwan Semiconductor Corporation 1V5KE43CA
- Part No.:
- 1V5KE43CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE43CA.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:8,094
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1V5KE43CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, designed for high-energy surge clamping in power and signal lines. It features a breakdown voltage of 40.9–45.2 V at 1 mA test current, clamps transients to ≤59.3 V at 25.3 A peak pulse current, and operates across –55°C to +175°C junction temperature.
For engineers reviewing the 1V5KE43CA datasheet, 1V5KE43CA pinout, 1V5KE43CA application, or 1V5KE43CA equivalent, key selection criteria include its bidirectional polarity, 36.8 V reverse stand-off voltage, low incremental surge resistance, fast response time, and compliance with RoHS and halogen-free standards per IEC 61249-2-21.
Technical Context
The 1V5KE43CA is a unidirectional/bidirectional avalanche diode optimized for transient suppression using silicon junction technology with glass passivation. Its electrical behavior follows standardized JEDEC TVS definitions, with symmetrical clamping in both directions due to the CA suffix designation.
It delivers 1500 W peak pulse power (10/1000 µs waveform), supports up to 200 A non-repetitive forward surge current (8.3 ms half-sine), and maintains <1 µA reverse leakage above 10 V - critical for low-power system protection without standby current penalty.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at 1 mA - defines reliable avalanche onset range for predictable clamping initiation |
| VRWM | 36.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 59.3 V at 25.3 A - clamped voltage during 1500 W transient, limiting downstream stress |
| PPPM | 1500 W - peak pulse power handling capability under standard 10/1000 µs surge waveform |
| IR @ VRWM | <1 µA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ Range | –55°C to +175°C - enables use in automotive under-hood, industrial motor drives, and outdoor power systems |
| Package | DO-201 - industry-standard axial-leaded package with UL 94V-0 molding compound and tin-plated leads |
Pinout & Package
DO-201 package: axial-leaded, cylindrical body with cathode band marking for unidirectional variants; for 1V5KE43CA (bidirectional), polarity is symmetrical - either lead may serve as anode or cathode depending on transient polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Transient return path (bidirectional) | Accepts positive or negative surges relative to cathode; no fixed polarity in CA configuration |
| Cathode (Lead 2) | Transient return path (bidirectional) | Functions identically to Lead 1 - symmetric conduction enables dual-polarity clamping without orientation dependency |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability and moisture resistance in harsh environments (e.g., industrial enclosures, outdoor lighting) |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD, inductive kickback), improving clamping precision |
| Fast response time (<1 ps) | Activates before sensitive ICs experience overvoltage damage - critical for protecting USB, RS-485, and PoE interfaces |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21 requirements - supports green manufacturing and end-of-life recycling mandates |
| UL 94V-0 molding compound | Prevents flame propagation in fault conditions - required for safety-certified power supplies and building automation systems |
Applications
| Industrial Motor Drives | LED Street Lighting Systems |
|---|---|
Use Scenario: Protection of gate drivers and feedback sensors against inductive switching transients from IGBTs and MOSFETs. IC Role / Device Role: Bidirectional clamping element placed across DC bus or control signal lines. Use Value: Limits voltage spikes to ≤59.3 V, preventing latch-up or permanent damage to isolated gate drivers and analog front-ends. | Use Scenario: Surge suppression on constant-current LED driver outputs exposed to lightning-induced surges in outdoor installations. IC Role / Device Role: Primary overvoltage clamp on output terminals of 36–48 V LED string drivers. Use Value: Absorbs 1500 W transients without degradation, maintaining luminous output stability and extending driver lifetime. |
| Automotive Body Control Modules | RS-485 Communication Nodes |
Use Scenario: Protection of LIN/CAN physical layer transceivers and microcontroller I/O pins from load dump and jump-start events. IC Role / Device Role: Secondary-level TVS on power rails and data lines interfacing with external harnesses. Use Value: Withstands 36.8 V stand-off and clamps to 59.3 V, aligning with ISO 7637-2 Pulse 5a requirements for 12 V systems. | Use Scenario: Transient hardening of differential RS-485 bus lines in factory automation networks subject to EFT and ESD. IC Role / Device Role: Bidirectional shunt device across A/B lines, referenced to common-mode ground. Use Value: Symmetrical clamping ensures equal protection for both polarities of fast transients, preserving signal integrity up to 10 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CA (Bourns) | Same 43 V VRWM, DO-214AA package (SMB), 600 W rating vs. 1500 W | Limited to lower-energy transients; unsuitable for high-power inductive loads or lightning-prone locations | Select when board space is constrained and surge energy remains below 600 W |
| 1N6286A (ON Semiconductor) | Identical JEDEC spec, same VBR/VC/PPPM, DO-201 package, but not halogen-free | May not meet RoHS/halogen-free compliance for EU or consumer electronics programs | Use only where halogen content is unrestricted and supply chain favors ON Semi sourcing |
Compared with SMBJ43CA and 1N6286A, the 1V5KE43CA offers superior 1500 W surge capacity in the proven DO-201 form factor while meeting strict environmental standards - making it optimal for industrial-grade, high-reliability, and regulated-market designs.
Availability
1V5KE43CA is available at Aetrix Electronics and suitable for industrial motor drives, LED street lighting systems, and automotive body control modules requiring stable component supply and long-term lifecycle support.
Supply support for 1V5KE43CA 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 with global distribution and AEC-Q200 qualified products.
The 1V5KExxCA series was developed specifically for high-energy transient suppression in industrial power conversion, lighting, and transportation systems - emphasizing robustness, thermal stability, and regulatory compliance.
FAQ
What does the "CA" suffix mean in 1V5KE43CA?
The "CA" suffix in 1V5KE43CA indicates a bidirectional configuration - meaning the device functions identically in both polarities, with symmetrical breakdown and clamping characteristics. Unlike unidirectional variants (e.g., 1V5KE43A), the 1V5KE43CA has no designated anode or cathode for installation orientation, simplifying PCB layout and enabling protection of AC-coupled or differential signal paths. This is confirmed in TSC's datasheet Version D2112, Section "Devices for Bipolar Applications".
What is the maximum clamping voltage of 1V5KE43CA under surge conditions?
The maximum clamping voltage (VC) of 1V5KE43CA is 59.3 V at 25.3 A peak pulse current (IPPM), measured under the standard 10/1000 µs double-exponential surge waveform. This value is guaranteed across the full operating temperature range and represents the upper limit of voltage seen by protected circuitry during a 1500 W transient event. The 1V5KE43CA datasheet specifies this parameter in the Electrical Specifications table on page 2.
Is 1V5KE43CA RoHS and halogen-free compliant?
Yes, 1V5KE43CA is fully RoHS compliant and halogen-free in accordance with IEC 61249-2-21. The device uses a molding compound free of brominated flame retardants and chlorine-based additives, and its pure tin-plated leads meet J-STD-002 solderability requirements. These compliance attributes are explicitly stated in the "Features" section of the TSC 1V5KE6V8(C)A–1V5KE440(C)A datasheet (Version D2112).
What is the junction temperature rating for 1V5KE43CA?
The 1V5KE43CA has a maximum junction temperature (TJ) rating of +175°C and a minimum of –55°C, supporting operation in extreme thermal environments such as under-hood automotive electronics, industrial inverters, and outdoor LED drivers. This wide range is enabled by its glass-passivated silicon junction and DO-201 package thermal design, and is specified in the Absolute Maximum Ratings table of the official TSC datasheet.
Can 1V5KE43CA be used in place of 1N6286A?
Yes, 1V5KE43CA can serve as a functional alternative to 1N6286A, as both share identical electrical specifications (VBR, VRWM, VC, PPPM) and DO-201 packaging. However, 1V5KE43CA adds halogen-free construction and updated RoHS compliance, whereas 1N6286A lacks these environmental certifications. For new designs targeting EU or consumer markets, 1V5KE43CA is preferred; legacy 1N6286A usage remains valid where compliance is not mandated.
1V5KE43CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AD, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 25.3A
- 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-201AD
1V5KE43CA FAQ
1.How can I place an order for 1V5KE43CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE43CA 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 1V5KE43CA reliable?
The price and inventory of 1V5KE43CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE43CA is usually 5 days.
3.What payment methods are accepted for 1V5KE43CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE43CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE43CA?
1V5KE43CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE43CA 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 1V5KE43CA?
For technical support, including 1V5KE43CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE43CA requirements.
6.How does Aetrix verify that 1V5KE43CA is sourced from the original manufacturer or authorized distributors?
All 1V5KE43CA 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 1V5KE43CA meets industry standards.
7.What is the process for return or replacement of 1V5KE43CA?
All 1V5KE43CA units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE43CA, 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 1V5KE43CA part is unused and in its original packaging.
Return procedure for 1V5KE43CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1V5KE43CA 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…
