My Inquiry
My Account
Taiwan Semiconductor Corporation 1.5KE6.8A
- Part No.:
- 1.5KE6.8A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE6.8A.pdf
- Description:
- TVS 1500W 6.8V 5% UNIDIR DO-201
- Quantity:
- Payment:
- Shipping:
Inventory:5,912
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE6.8A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a nominal breakdown voltage of 6.8V, clamping voltage of 10.5V at 1000A peak impulse current, working stand-off voltage of 5.80V, and fast response time under 1.0ps - deployed in automotive ECU power inputs, industrial sensor interfaces, and LED driver supply lines.
For engineers reviewing the 1.5KE6.8A datasheet, 1.5KE6.8A pinout, 1.5KE6.8A application, or 1.5KE6.8A equivalent, key selection criteria include its DO-201 package compatibility, AEC-Q101 qualification status, 10.5V clamping performance at 1000A, low leakage (<1µA above 10V), and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive transients.
Technical Context
The 1.5KE6.8A operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 6.45–7.14V breakdown range at 10mA test current. Its junction structure enables sub-nanosecond turn-on to clamp transient energy before downstream ICs experience overstress.
It delivers 1500W peak pulse power per 10/1000μs waveform, with thermal derating above 25°C ambient and maximum junction temperature of +175°C. The device exhibits 0.057%/°C VBR temperature coefficient and <1µA blocking leakage at 5.80V working stand-off voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT=10mA | 6.45–7.14V - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| VWM | 5.80V - maximum continuous reverse operating voltage without significant leakage |
| VC @ IPP=1000A | 10.5V - clamped voltage during worst-case 10/1000μs surge, limiting stress on protected ICs |
| PPK | 1500W - peak transient power handling capability under standardized surge waveform |
| IPP max | 1000A - maximum non-repetitive peak impulse current it can safely divert |
| Junction Temp Range | –55°C to +175°C - supports operation in under-hood automotive and industrial environments |
| Leakage @ VWM | <1µA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
Pinout & Package
Package: DO-201 axial lead package with cathode band marking; RoHS-compliant, halogen-free molding compound; pure tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line; conducts during overvoltage to clamp to VC |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| 10/1000μs surge rating | 1500W peak power handling per ISO 7637-2 Pulse 5a/b standard for automotive load dump |
| Clamping ratio VC/VBR | 1.47 - low ratio ensures tight voltage control during transient events |
| Dynamic impedance | <10mΩ - minimizes voltage overshoot during fast-rising transients |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (switching noise) |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12V battery-fed ECU power input subjected to load dump and jump-start surges. IC Role / Device Role / Timing Role: Primary unidirectional TVS clamping element placed upstream of LDO/regulator input. Use Value: Limits transient voltage to ≤10.5V during 1000A pulses, preventing regulator latch-up or MOSFET gate oxide failure. |
Use Scenario: 4–20mA current loop interface exposed to ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance overvoltage clamp on analog input path before signal conditioning amplifier. Use Value: Sub-1.0ps response prevents >10.5V excursion from reaching precision op-amp inputs, preserving measurement accuracy. |
| LED Driver Supply Rail Protection | DC Motor Control Board Surge Suppression |
Use Scenario: Constant-current LED driver IC powered from 24V industrial supply with inductive switching noise. IC Role / Device Role / Timing Role: Standoff protector across input capacitor to absorb repetitive switching spikes. Use Value: Withstands 1000+ cycles of 10/1000μs surges at 5.80V stand-off, extending driver IC lifetime in harsh lighting environments. |
Use Scenario: H-bridge motor controller board experiencing back-EMF transients during PWM commutation. IC Role / Device Role / Timing Role: Unidirectional TVS across motor supply rail to shunt inductive kickback energy. Use Value: Clamps 1500W surges within 1.0ps, reducing MOSFET drain-source voltage overshoot and preventing avalanche-induced failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8A | Lower peak power (600W), SMC package (smaller footprint), higher VC (11.2V @ 53.3A) | Better suited for space-constrained PCBs with moderate surge requirements (e.g., consumer IoT) | Select SMBJ6.8A only if system-level surge energy is ≤600W and layout cannot accommodate DO-201 axial leads. |
| 1.5KE6.8CA | Bidirectional variant; identical VBR, VC, and PPK, but symmetrical clamping in both polarities | Required for AC-coupled or floating signal lines where polarity reversal may occur | Choose 1.5KE6.8CA only when protecting bidirectional data lines (e.g., RS-485) or transformer-coupled circuits. |
Compared with SMBJ6.8A and 1.5KE6.8CA, the 1.5KE6.8A provides higher surge margin (1500W vs. 600W) and proven AEC-Q101 qualification for automotive use, while maintaining cost-effective DO-201 manufacturability - making it optimal for high-energy DC rail protection where reliability and power handling are prioritized over miniaturization.
Availability
1.5KE6.8A is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor modules, LED driver designs, and motor control boards requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5KE6.8A 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 for automotive, industrial, and consumer markets.
The 1.5KE series was engineered specifically for high-energy transient suppression in automotive and industrial power systems, emphasizing AEC-Q101 reliability, ISO 7637-2 compliance, and robust DO-201 packaging for manual and automated assembly.
FAQ
What is the breakdown voltage tolerance of the 1.5KE6.8A?
The 1.5KE6.8A has a specified breakdown voltage range of 6.45V to 7.14V at 10mA test current, corresponding to ±5% tolerance around the nominal 6.8V rating. This tight VBR window ensures consistent clamping behavior across production lots and supports predictable circuit protection design without over-margining.
Is the 1.5KE6.8A suitable for bidirectional signal line protection?
No - the 1.5KE6.8A is a unidirectional TVS diode, intended for DC power rail or single-polarity signal protection. For bidirectional applications such as RS-485 or USB data lines, the 1.5KE6.8CA variant must be used, as it provides symmetrical clamping in both forward and reverse directions.
Does the 1.5KE6.8A meet automotive qualification standards?
Yes - the 1.5KE6.8A is explicitly AEC-Q101 qualified and meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements. Its qualification covers temperature cycling, highly accelerated life testing (HALT), and ESD robustness, confirming suitability for under-hood and body-control module applications.
What is the maximum clamping voltage of the 1.5KE6.8A during a 1000A transient?
The 1.5KE6.8A clamps to a maximum of 10.5V when subjected to a 1000A peak impulse current with a 10/1000μs waveform. This value is guaranteed per datasheet specifications and forms the basis for downstream IC voltage stress analysis in protected circuits.
Can the 1.5KE6.8A replace the 1N6267A in existing designs?
Yes - the 1.5KE6.8A and 1N6267A are JEDEC-registered equivalents with identical electrical specifications, DO-201 packaging, and pinout. Both share the same VBR, VC, PPK, and thermal ratings; the 1.5KE6.8A designation reflects Taiwan Semiconductor's branding while maintaining full functional and mechanical interchangeability with 1N6267A.
1.5KE6.8A 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 150A
- 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
1.5KE6.8A FAQ
1.How can I place an order for 1.5KE6.8A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE6.8A 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 1.5KE6.8A reliable?
The price and inventory of 1.5KE6.8A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE6.8A is usually 5 days.
3.What payment methods are accepted for 1.5KE6.8A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE6.8A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE6.8A?
1.5KE6.8A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE6.8A 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 1.5KE6.8A?
For technical support, including 1.5KE6.8A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE6.8A requirements.
6.How does Aetrix verify that 1.5KE6.8A is sourced from the original manufacturer or authorized distributors?
All 1.5KE6.8A 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 1.5KE6.8A meets industry standards.
7.What is the process for return or replacement of 1.5KE6.8A?
All 1.5KE6.8A units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE6.8A, 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 1.5KE6.8A part is unused and in its original packaging.
Return procedure for 1.5KE6.8A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE6.8A 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…
