My Inquiry
My Account
Taiwan Semiconductor Corporation 1V5KE68A
- Part No.:
- 1V5KE68A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE68A.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:2,582
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1V5KE68A from Taiwan Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-201 package, rated for 1500W peak pulse power at 1.0ms, with breakdown voltage 64.6–71.4V at 1mA test current, clamping voltage 92.0V at 16.3A peak pulse current, and reverse stand-off voltage 58.1V. It protects power rails and I/O lines in industrial power supplies and motor drives against ESD and inductive switching transients.
For engineers reviewing the 1V5KE68A datasheet, 1V5KE68A pinout, 1V5KE68A application, or 1V5KE68A equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, peak pulse current capability under 10/1000μs waveform, thermal derating above 75°C ambient, and DO-201 lead-form compatibility with existing PCB footprints.
Technical Context
This TVS operates as a silicon avalanche diode with glass-passivated junction, designed for fast response (<1ns) to transient overvoltages. Its low incremental surge resistance ensures stable clamping performance across varying surge magnitudes, while typical reverse leakage remains below 1μA at 58.1V.
The device complies with JEDEC standards for unidirectional TVS diodes and meets JESD201 Class 2 whisker resistance. It is rated for junction temperatures from –55°C to +175°C and supports single 8.3ms half-sine surge currents up to 200A in unidirectional configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6V / 71.4V at 1mA - defines minimum and maximum guaranteed avalanche initiation threshold |
| VRWM | 58.1V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 92.0V at 16.3A - clamping voltage during 10/1000μs surge, critical for downstream IC overvoltage margin |
| PPPM | 1500W - peak pulse power handling at 1.0ms, determines survivability of lightning or EFT events |
| IFSM | 200A - peak forward surge current rating for unidirectional operation, relevant for fault-current paths |
| TJ max | +175°C - maximum junction temperature, enables use in high-ambient industrial environments |
| Package | DO-201 - axial-leaded through-hole package with 0.375" lead length, UL 94V-0 rated molding compound |
Pinout & Package
DO-201 package: axial-leaded, cylindrical body with cathode band marking. Leads are pure tin plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional protection |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 48V rail); marked by band; conducts when line exceeds VRWM |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures long-term reliability and stable VBR under thermal cycling and humidity stress |
| 1500W peak pulse power (1ms) | Withstands IEC 61000-4-5 Level 4 surges (4kV/2Ω) on 48V systems without degradation |
| Clamping ratio VC/VBR ≈ 1.34 | Indicates tight voltage control-lower ratio improves system-level overvoltage margin |
| Reverse leakage <1μA @ VRWM | Minimizes standby power loss in always-on circuits such as battery-backed monitoring systems |
| RoHS & halogen-free | Complies with IEC 61249-2-21; suitable for automotive and industrial end-equipment requiring green compliance |
Applications
| Industrial Power Supply Protection | Motor Drive DC Bus Clamping |
|---|---|
Use Scenario: Protecting 48V input stage of programmable logic controller (PLC) power module against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp transients before they reach upstream DC-DC converter. Use Value: 92.0V clamping voltage provides >10V margin below 100V-rated input capacitors, preventing catastrophic failure during 1500W surge events. | Use Scenario: Suppressing flyback voltage spikes on H-bridge DC bus during MOSFET turn-off in servo amplifier. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing energy from motor inductance, limiting bus voltage overshoot to safe levels. Use Value: 16.3A peak pulse current rating matches typical 10/1000μs surge profiles in 5kW motor drives, ensuring reliable clamping without thermal runaway. |
| Telecom Line Interface Protection | Factory Automation Sensor I/O Protection |
Use Scenario: Shielding RS-485 transceiver inputs on remote I/O modules from ESD and lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: TVS placed at connector entry point, shunting transients before signal conditioning circuitry. Use Value: Sub-1ns response time prevents transient propagation into ±12V bias networks, preserving signal integrity during 8kV contact ESD events. | Use Scenario: Guarding analog 4–20mA current loop inputs in PLC analog input cards against wiring faults and field ESD. IC Role / Device Role / Timing Role: Low-leakage (≤1μA) unidirectional TVS referenced to loop supply, minimizing offset error in precision current measurement. Use Value: 58.1V VRWM allows full 24V loop headroom while maintaining <0.01% gain error contribution from leakage current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A | Lower PPPM (600W), smaller SMB package, VBR 71.1–78.6V, VC 103V @ 5.8A | Suitable for space-constrained PCBs but requires derating for 1500W-level surges | Select when board area is critical and surge energy is ≤600W; verify thermal dissipation in SMB footprint. |
| 1N6291A | Same manufacturer, identical specs and DO-201 package; obsolete part number superseded by 1V5KE68A | No functional or layout change required; direct replacement per Taiwan Semiconductor documentation | Prefer 1V5KE68A for new designs due to updated process and RoHS/halogen-free compliance. |
Compared with SMBJ64A and 1N6291A, the 1V5KE68A delivers higher surge robustness in legacy-compatible DO-201 form factor, making it optimal for industrial upgrades where footprint retention and 1500W immunity are mandatory.
Availability
1V5KE68A is available at Aetrix Electronics and suitable for industrial power supplies, motor drive DC bus protection, and telecom line interface circuits requiring stable component supply and long-lifecycle support.
Supply support for 1V5KE68A 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 ISO/TS 16949 and ISO 14001 certifications.
The 1V5KE series is engineered for high-energy transient suppression in harsh industrial and transportation environments, emphasizing reliability under thermal stress, surge repetition, and long-term parametric stability.
FAQ
What is the clamping voltage of the 1V5KE68A under a 10/1000μs surge?
The 1V5KE68A has a maximum clamping voltage (VC) of 92.0V at 16.3A peak pulse current under the standard 10/1000μs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. Designers must ensure this clamping level stays below the absolute maximum ratings of downstream components. The 1V5KE68A achieves this with low incremental surge resistance and stable avalanche characteristics.
Is the 1V5KE68A unidirectional or bidirectional?
1V5KE68A is a unidirectional TVS diode, intended for DC rail protection where polarity is fixed. Its cathode band marks the terminal connected to the protected line. For bidirectional AC or floating applications, the variant 1V5KE68CA is specified-same VBR and VC but symmetrical breakdown in both directions. The 1V5KE68A does not conduct in reverse bias until VRWM = 58.1V is exceeded.
What is the maximum operating temperature for the 1V5KE68A?
The 1V5KE68A is rated for junction temperatures from –55°C to +175°C. At ambient temperatures above 75°C, its power dissipation must be derated linearly per the steady-state derating curve, reaching zero at 175°C case temperature. This high TJ rating makes the 1V5KE68A suitable for enclosed industrial enclosures and under-hood automotive auxiliary systems where thermal management is constrained.
Does the 1V5KE68A meet RoHS and halogen-free requirements?
Yes, the 1V5KE68A is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound is UL 94V-0 rated, and the pure tin-plated leads satisfy J-STD-002 solderability requirements. These qualifications are confirmed in Taiwan Semiconductor's official documentation for version D2112, making the 1V5KE68A appropriate for export-controlled and green-compliant industrial designs.
Can the 1V5KE68A replace the older 1N6291A?
Yes, the 1V5KE68A is the designated replacement for 1N6291A per Taiwan Semiconductor's product change notification. Both share identical electrical specifications, DO-201 packaging, and marking conventions. The 1V5KE68A incorporates process enhancements and updated environmental compliance (RoHS/halogen-free), while maintaining full form-fit-function equivalence. No PCB or schematic changes are needed when migrating from 1N6291A to 1V5KE68A.
1V5KE68A 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 16.3A
- 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
1V5KE68A FAQ
1.How can I place an order for 1V5KE68A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE68A 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 1V5KE68A reliable?
The price and inventory of 1V5KE68A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE68A is usually 5 days.
3.What payment methods are accepted for 1V5KE68A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE68A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE68A?
1V5KE68A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE68A 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 1V5KE68A?
For technical support, including 1V5KE68A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE68A requirements.
6.How does Aetrix verify that 1V5KE68A is sourced from the original manufacturer or authorized distributors?
All 1V5KE68A 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 1V5KE68A meets industry standards.
7.What is the process for return or replacement of 1V5KE68A?
All 1V5KE68A units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE68A, 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 1V5KE68A part is unused and in its original packaging.
Return procedure for 1V5KE68A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1V5KE68A 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…
