My Inquiry
My Account
Taiwan Semiconductor Corporation 1V5KE350CA
- Part No.:
- 1V5KE350CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE350CA.pdf
- Description:
- TVS DIODE 300VWM 482VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:3,326
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1V5KE350CA from Taiwan Semiconductor is a bi-directional transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and signal interfaces. It delivers 1500W peak pulse power at 1.0ms, clamps transients up to 482V at 3.2A, and features a 300V reverse stand-off voltage (VRWM) with <5μA leakage at rated voltage. It is used in industrial power supplies and telecom line cards to protect downstream ICs from lightning-induced surges.
For engineers reviewing the 1V5KE350CA datasheet, 1V5KE350CA pinout, 1V5KE350CA application, or 1V5KE350CA equivalent, key selection criteria include its DO-201 package compatibility, bidirectional clamping symmetry, 333–368V breakdown voltage range, and thermal stability up to 175°C junction temperature.
Technical Context
The 1V5KE350CA operates as a silicon avalanche diode with glass-passivated junction, enabling fast response (<1ns) to ESD and electrical fast transients (EFT). Its bi-directional structure ensures symmetrical clamping in AC-coupled or floating systems without polarity concerns.
It meets IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (surge) immunity requirements when applied with appropriate series impedance. The device sustains repetitive 10/1000μs waveform surges up to its rated 1500W peak power without degradation under defined thermal conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 300 V - Maximum continuous reverse operating voltage before significant leakage begins |
| VBR (min/max) | 333 V / 368 V - Breakdown occurs within this range at 1mA test current; defines clamping onset threshold |
| VC @ IPPM | 482 V - Clamped voltage at 3.2A peak pulse current; determines maximum stress on protected circuit |
| PPK | 1500 W - Peak pulse power handling for 1ms 10/1000μs waveform; sets surge energy limit |
| TJ max | 175 °C - Maximum allowable junction temperature; governs thermal derating in PCB layout |
| IR @ VRWM | <5 μA - Reverse leakage at 300V; ensures minimal standby power loss and signal integrity |
Pinout & Package
Package: DO-201 axial leaded case with cathode band marking (for unidirectional variants); 1V5KE350CA is bi-directional and marked per standard TSC coding - no polarity band required. Molding compound complies with UL 94V-0; leads are pure tin plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | Either terminal serves as anode or cathode depending on transient polarity; no orientation required in PCB layout |
| Lead 1 / Lead 2 | Current path terminals | Leads conduct surge current bidirectionally; must be routed with low-inductance traces to preserve clamping speed |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable avalanche behavior over 1000+ surge events without parameter drift or leakage increase |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD), improving protection margin |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21; supports environmentally regulated industrial and telecom deployments |
| JEDEC DO-201 mechanical standard | Ensures drop-in compatibility with legacy TVS footprints and automated assembly processes |
Applications
| Industrial Power Input Protection | Telecom Line Interface Protection |
|---|---|
Use Scenario: 24–48V DC input stage of programmable logic controllers exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Primary surge shunt element placed upstream of DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤482V at 3.2A, preventing latch-up or gate oxide damage in downstream SiC MOSFET drivers and isolated ADCs. | Use Scenario: T1/E1 interface cards in central office equipment subjected to lightning-induced common-mode surges on twisted-pair lines. IC Role / Device Role / Timing Role: First-line bi-directional clamping device across differential pair before transformer coupling and line receiver ICs. Use Value: Symmetrical clamping preserves signal integrity during ±482V transients while maintaining <5μA leakage at 300V operating bias. |
| Automotive Body Control Module (BCM) | Renewable Energy Inverter DC Link |
Use Scenario: 12V battery-supplied BCM modules enduring ISO 7637-2 pulse 1 (inductive switch-off) and pulse 5a (load dump). IC Role / Device Role / Timing Role: Standoff-rated TVS on power rail, coordinated with fuse and LC filter for staged protection. Use Value: Withstands 1500W peak pulses without failure and maintains VRWM ≥300V to avoid false triggering during normal 14V nominal operation. | Use Scenario: DC link between PV array and inverter H-bridge where voltage spikes exceed 400V due to rapid IGBT turn-off. IC Role / Device Role / Timing Role: Overvoltage clamp parallel to DC bus capacitor, absorbing stored inductive energy during fault conditions. Use Value: Clamps 3.2A surges at 482V while operating continuously at 300V, compatible with 600V-class IGBT gate drivers and isolation amplifiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | 600W rating, DO-214AA package, 33V VRWM - lower power and smaller footprint | Targeted at low-energy signal-level protection (e.g., USB, RS-485), not mains-connected DC rails | Select SMBJ33CA only if system surge energy is ≤600W and board space constraints prohibit DO-201 |
| 1N6284A | Same DO-201 package, 36V VRWM, 39.2V VBR - significantly lower voltage rating | Designed for 24V automotive or industrial control systems, not 300V+ DC bus applications | 1N6284A is unsuitable for 1V5KE350CA's 300V operating environment; use only in sub-40V systems |
Compared with SMBJ33CA and 1N6284A, the 1V5KE350CA provides 2.5× higher peak power and 10× higher VRWM, making it uniquely suited for high-voltage DC distribution networks where sustained standoff and robust surge handling are mandatory.
Availability
1V5KE350CA is available at Aetrix Electronics and suitable for industrial power supplies, telecom line cards, and renewable energy inverters requiring stable component supply and long-term obsolescence management.
Supply support for 1V5KE350CA 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, serving global industrial, automotive, and telecom markets since 1979.
The 1V5KExxCA series belongs to TSC's high-power TVS portfolio, engineered specifically for ruggedized surge immunity in harsh electromagnetic environments - including factory automation, outdoor base stations, and solar farm inverters.
FAQ
What is the breakdown voltage tolerance for 1V5KE350CA?
The 1V5KE350CA has a specified breakdown voltage (VBR) range of 333 V to 368 V at 1 mA test current, per Taiwan Semiconductor's D2112 datasheet revision. This ±5.2% tolerance reflects manufacturing consistency across the production lot and ensures predictable clamping onset in high-voltage protection circuits. The 1V5KE350CA's VBR window is validated under JEDEC-standard test conditions and remains stable over temperature and lifetime.
Is 1V5KE350CA suitable for AC line protection?
No - the 1V5KE350CA is rated for DC applications only, with a 300 V reverse stand-off voltage (VRWM) and no RMS voltage or AC endurance rating. It lacks certification for direct connection to 120/230 VAC mains. For AC line protection, use standards-compliant MOVs or AC-rated TVS arrays. The 1V5KE350CA is intended for DC bus protection in off-line power supplies, battery systems, and DC-fed telecom infrastructure.
Does 1V5KE350CA require a heatsink in typical applications?
No - the 1V5KE350CA is designed for transient-only duty and does not require heatsinking under normal operation. Its 5 W steady-state power dissipation rating applies only at 75°C ambient with 0.375-inch lead length; continuous DC power dissipation is negligible due to <5 μA leakage at VRWM. Heatsinking is unnecessary unless subjected to frequent repetitive surges exceeding thermal time constants - a condition outside its intended use case.
How does the bi-directional configuration of 1V5KE350CA affect PCB layout?
The bi-directional nature of 1V5KE350CA eliminates polarity constraints: either lead may connect to either side of the protected node, simplifying layout and reducing assembly errors. No cathode band marking is present, and the DO-201 body is symmetric. Layout best practice still requires short, low-inductance traces to both terminals to preserve sub-nanosecond response - critical for ESD and EFT immunity performance of the 1V5KE350CA.
Can 1V5KE350CA replace 1V5KE330CA in an existing design?
Yes - the 1V5KE350CA and 1V5KE330CA share identical DO-201 packaging, thermal ratings, and surge capability (1500W), differing only in VRWM (300 V vs. 282 V) and VBR (333–368 V vs. 313–347 V). Substitution is acceptable if the protected circuit's maximum continuous voltage remains ≤300 V and clamping margin above 482 V is sufficient. Verify that downstream components tolerate the slightly higher clamping voltage of the 1V5KE350CA.
1V5KE350CA 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):
- 300V
- Voltage - Breakdown (Min):
- 333V
- Voltage - Clamping (Max) @ Ipp:
- 482V
- Current - Peak Pulse (10/1000µs):
- 3.2A
- 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
1V5KE350CA FAQ
1.How can I place an order for 1V5KE350CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE350CA 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 1V5KE350CA reliable?
The price and inventory of 1V5KE350CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE350CA is usually 5 days.
3.What payment methods are accepted for 1V5KE350CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE350CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE350CA?
1V5KE350CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE350CA 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 1V5KE350CA?
For technical support, including 1V5KE350CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE350CA requirements.
6.How does Aetrix verify that 1V5KE350CA is sourced from the original manufacturer or authorized distributors?
All 1V5KE350CA 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 1V5KE350CA meets industry standards.
7.What is the process for return or replacement of 1V5KE350CA?
All 1V5KE350CA units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE350CA, 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 1V5KE350CA part is unused and in its original packaging.
Return procedure for 1V5KE350CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1V5KE350CA 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…
