My Inquiry
My Account
Taiwan Semiconductor Corporation 1.5KE33CA A0G
- Part No.:
- 1.5KE33CA A0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE33CA A0G.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:8,377
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE33CA A0G from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 33 V, working stand-off voltage 26.8 V, clamping voltage 47.7 V at 33 A peak pulse current, and junction temperature range −55 °C to +175 °C - used for ESD and surge protection in automotive power rails and industrial sensor interfaces.
For engineers reviewing the 1.5KE33CA A0G datasheet, 1.5KE33CA A0G pinout, 1.5KE33CA A0G application, or 1.5KE33CA A0G equivalent, key selection criteria include bidirectional clamping performance, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, low dynamic impedance, sub-5 ns response time, and AEC-Q101 qualification status.
Technical Context
The 1.5KE33CA A0G is a junction-based avalanche diode designed for unidirectional or bidirectional transient suppression. It operates by entering avalanche breakdown when voltage exceeds VBR (31.4–34.7 V), limiting clamped voltage to ≤47.7 V under 10/1000 μs 33 A surge, with typical leakage <1 μA above 10 V.
Its DO-201 axial package supports lead-free soldering per J-STD-002, meets UL 94V-0 flammability, and delivers 1500 W peak pulse power at TA = 25 °C - derated linearly above ambient temperature per Fig.2, with maximum junction temperature of 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1 mA | 31.4 V min / 34.7 V max - defines precise avalanche onset threshold for reliable overvoltage triggering |
| VWM | 26.8 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPP = 33 A | 47.7 V - clamped voltage during 10/1000 μs surge, directly limiting downstream IC stress |
| PPK | 1500 W - peak pulse power handling capability under standardized surge waveform |
| IR @ VWM | <1 μA - ultra-low leakage ensures minimal standby power loss in high-impedance circuits |
| TJ Range | −55 °C to +175 °C - enables deployment in under-hood automotive and industrial environments |
| Response Time | <5.0 ns - ensures suppression activation before transients damage sensitive logic or analog inputs |
Pinout & Package
DO-201 axial-leaded package with cathode band marking for polarity identification; leads are pure tin plated and solderable per J-STD-002; weight ≈ 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink (bidirectional) | Accepts surge current in either direction; no fixed polarity - symmetric conduction |
| Cathode | Transient current sink (bidirectional) | Functions identically to anode in CA-suffix devices; marked band indicates terminal orientation only |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) |
| Low dynamic impedance | Minimizes voltage overshoot during fast-rising transients by sustaining stable clamping behavior |
| Halogen-free construction | Complies with IEC 61249-2-21, supporting RoHS and environmental compliance requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-connected ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Primary surge shunt device placed at power entry point, clamping spikes before they reach PMICs or microcontrollers. Use Value: Withstands 1500 W surges per ISO 7637-2 Pulse 1 and limits clamped voltage to 47.7 V - well below typical 60 V input rating of automotive DC-DC converters. | Use Scenario: Shielding 4–20 mA current loop transmitters from EFT and lightning-induced surges on field wiring. IC Role / Device Role / Timing Role: Bidirectional TVS placed across loop terminals to clamp both positive and negative transients. Use Value: Sub-5 ns response ensures suppression activates before transient energy couples into precision op-amps or ADC front-ends. |
| LED Driver Input Stage | RS-485 Transceiver Port |
Use Scenario: Safeguarding constant-current LED drivers against inductive switching spikes from relay or MOSFET control lines. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing energy from L·di/dt events on driver supply input. Use Value: 47.7 V clamping prevents overvoltage stress on internal FETs or gate drivers rated for ≤50 V operation. | Use Scenario: Protecting half-duplex RS-485 transceivers (e.g., SN65HVD230) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Bidirectional TVS across differential bus lines (A/B) and ground to divert common-mode surges. Use Value: Symmetric 33 V breakdown and low leakage (<1 μA) avoid signal distortion while maintaining bus bias integrity. |
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 SMAJ33CA | Same DO-214AC (SMA) package; 33 V VBR (min 29.7 V), 53.3 V VC @ 28.1 A; lower PPK (400 W) | Lower surge rating suits consumer-grade or low-energy interfaces; not AEC-Q101 qualified | Select when space-constrained PCB layout favors surface-mount and surge demands are ≤400 W |
| ON Semiconductor 1.5SMC33CA | DO-214AB (SMC) package; 33 V VBR (min 29.7 V), 53.3 V VC @ 28.1 A; PPK = 1500 W; AEC-Q101 option available | Same power rating but larger footprint; thermal performance differs due to package geometry and pad layout | Select when board-level thermal management favors SMC's higher thermal mass and proven industrial reliability |
Compared with 1.5KE33CA A0G, SMAJ33CA offers smaller size but reduced surge capacity, while 1.5SMC33CA matches power rating and qualification level but requires different PCB land pattern and thermal design.
Availability
1.5KE33CA A0G is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and LED lighting control requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE33CA A0G 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 MOSFETs, with global distribution and AEC-Q101 validation capabilities.
The 1.5KE series was developed specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and transportation applications where robustness, consistency, and regulatory compliance are critical.
FAQ
What does the 'CA' suffix mean in 1.5KE33CA A0G?
The 'CA' suffix in 1.5KE33CA A0G denotes bidirectional configuration - meaning the device provides symmetrical clamping for both positive and negative transients. Unlike unidirectional 'A' variants, the CA version has identical electrical characteristics in either polarity, making it ideal for AC-coupled or floating signal line protection without polarity constraints.
Is 1.5KE33CA A0G AEC-Q101 qualified?
Yes, 1.5KE33CA A0G is AEC-Q101 qualified. The 'A0G' ordering code indicates the DO-201 packaged variant with green compound and full AEC-Q101 stress testing - including temperature cycling, high-temperature reverse bias, and mechanical shock - confirming suitability for automotive under-hood and chassis applications.
What is the clamping voltage of 1.5KE33CA A0G at its rated surge current?
The 1.5KE33CA A0G has a maximum clamping voltage (VC) of 47.7 V at 33 A peak pulse current (IPP), measured under the standard 10/1000 μs double-exponential surge waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
How does 1.5KE33CA A0G differ from the 'A' version (e.g., 1.5KE33A)?
The 1.5KE33CA A0G is bidirectional, while 1.5KE33A is unidirectional. The CA version clamps equally in both directions with symmetric VBR (31.4–34.7 V) and VC (47.7 V), whereas the 'A' variant conducts only in reverse bias and requires correct polarity placement. Both share DO-201 packaging and AEC-Q101 qualification in A0G form.
Can 1.5KE33CA A0G be used in place of a unidirectional TVS in DC power rail protection?
Yes, 1.5KE33CA A0G can replace a unidirectional TVS in DC power rail protection, though with minor trade-offs: its bidirectional structure results in slightly higher leakage near VWM and no forward voltage drop specification. However, its 47.7 V clamping and 1500 W rating remain fully effective for suppressing load dump and EFT events on 24 V systems.
1.5KE33CA A0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 45.7V
- Current - Peak Pulse (10/1000µs):
- 34A
- 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
1.5KE33CA A0G FAQ
1.How can I place an order for 1.5KE33CA A0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE33CA A0G 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 1.5KE33CA A0G reliable?
The price and inventory of 1.5KE33CA A0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE33CA A0G is usually 5 days.
3.What payment methods are accepted for 1.5KE33CA A0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE33CA A0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE33CA A0G?
1.5KE33CA A0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE33CA A0G 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 1.5KE33CA A0G?
For technical support, including 1.5KE33CA A0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE33CA A0G requirements.
6.How does Aetrix verify that 1.5KE33CA A0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE33CA A0G 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 1.5KE33CA A0G meets industry standards.
7.What is the process for return or replacement of 1.5KE33CA A0G?
All 1.5KE33CA A0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE33CA A0G, 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 1.5KE33CA A0G part is unused and in its original packaging.
Return procedure for 1.5KE33CA A0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE33CA A0G 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…
