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Diodes Incorporated 1.5KE68A-T
- Part No.:
- 1.5KE68A-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE68A-T.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:2,756
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Product details
Overview
1.5KE68A-T from Diodes Incorporated is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with 58.1V reverse standoff voltage, 64.6V minimum breakdown voltage at 1mA test current, and 92.0V maximum clamping voltage at 16.3A peak pulse current. It provides robust ESD and surge protection for DC power rails in industrial power supplies and automotive control modules.
For engineers reviewing the 1.5KE68A-T datasheet, 1.5KE68A-T pinout, 1.5KE68A-T application, or 1.5KE68A-T equivalent, key selection criteria include clamping voltage margin relative to protected IC VMAX, peak pulse current handling under IEC 61000-4-5 waveform, thermal derating above +25°C, and axial lead solderability per MIL-STD-202 Method 208.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: it remains high-impedance below 58.1V VRWM, then avalanches sharply at 64.6V (min) to clamp transients. Its glass-passivated junction ensures stable leakage (<5μA @ 58.1V) and repeatable breakdown over temperature.
The device handles 1500W non-repetitive 1.0ms pulses with <1ps response time, limiting induced voltage on protected lines to ≤92.0V at 16.3A. Its DO-201 package supports 5.0W steady-state dissipation at TL=75°C with 9.5mm lead length, enabling direct PCB mounting without heatsinking for moderate-duty surge events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W at 1.0ms pulse - sustains IEC 61000-4-5 Level 4 surges (4kV/2Ω) without failure |
| Reverse Standoff Voltage | 58.1V - maximum continuous DC voltage before significant leakage; sets upper limit for protected rail |
| Breakdown Voltage | 64.6V min @ 1mA - guaranteed avalanche initiation point; defines clamping onset threshold |
| Clamping Voltage | 92.0V max @ 16.3A - peak voltage seen by downstream circuit during worst-case surge |
| Leakage Current | ≤5.0μA @ 58.1V - negligible standby power loss and no false triggering on nominal rails |
| Operating Temperature | -55°C to +175°C - qualified for under-hood automotive and industrial environments |
| Package | DO-201 - axial-leaded, transfer-molded epoxy housing rated UL 94V-0; 1.12g mass |
Pinout & Package
DO-201 package with axial leads: cathode indicated by band marking. Anode and cathode terminals are electrically isolated except during avalanche conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink during transient | Connected to protected line; conducts surge current to ground when clamping |
| Cathode | Reference terminal | Marked with band; tied to system ground or lower-potential reference plane |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Stable breakdown voltage and low leakage across -55°C to +175°C operating range |
| 1500W peak pulse rating | Withstands 4kV IEC 61000-4-5 combination wave surges without degradation |
| RoHS-compliant & halogen-free | Meets EU Directive 2015/863/EU; <900ppm Br, <900ppm Cl, <1000ppm Sb |
| Axial lead construction | Solderable per MIL-STD-202 Method 208; enables manual or wave-solder assembly |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 48V DC input stage of programmable logic controller (PLC) power supply exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between +48V rail and chassis ground to clamp surges exceeding 58.1V. Use Value: Limits transient voltage to ≤92.0V, protecting downstream DC-DC controllers and microcontrollers rated for 100V absolute maximum. |
Use Scenario: CAN bus power line (VBAT) in body control unit subjected to ISO 7637-2 Pulse 5a load dump events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12V/24V battery feed, positioned upstream of LDO regulators and CAN transceivers. Use Value: Absorbs 1500W peak energy within 1ms, preventing regulator latch-up and transceiver damage during 35V/100ms load dump. |
| Telecom AC-DC Adapter Input | Renewable Energy Inverter DC Link |
Use Scenario: Secondary-side DC output (24V) of telecom wall adapter exposed to fast ESD events per IEC 61000-4-2. IC Role / Device Role / Timing Role: Fast-response TVS across output terminals to suppress contact discharge up to ±15kV. Use Value: Sub-nanosecond response ensures clamping before ESD pulse couples into connected equipment, maintaining output regulation. |
Use Scenario: DC link capacitor protection in solar microinverter where PV string voltage reaches 600V and switching transients induce overshoot. IC Role / Device Role / Timing Role: Secondary-level clamp on intermediate DC bus to limit voltage spikes from IGBT turn-off. Use Value: 92.0V clamping margin allows safe operation with 600V-rated capacitors while preventing gate driver overvoltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A | 64V standoff, 1000W rating, SMB package (surface-mount) | Requires PCB rework for SMT layout; lower peak power than 1.5KE68A-T | Select when board space is constrained and surge requirements are ≤1000W |
| P6KE68A | 68V standoff, 600W rating, DO-15 package (axial, smaller footprint) | Lower power handling; 50% less clamping margin at same current | Choose only for cost-sensitive, low-energy surge environments where 600W suffices |
Compared with SMBJ64A and P6KE68A, the 1.5KE68A-T delivers 50% higher peak power and maintains tighter clamping voltage at rated current-critical for protecting sensitive 75V-tolerant power management ICs in harsh industrial settings.
Availability
1.5KE68A-T is available at Aetrix Electronics and suitable for industrial power supply protection, automotive body control modules, and telecom adapter designs requiring stable component supply and long-term obsolescence mitigation.
Supply support for 1.5KE68A-T 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers and manufacturing facilities across Asia and the Americas.
The 1.5KE series targets high-energy transient suppression in automotive, industrial, and telecom infrastructure, emphasizing rugged packaging, wide temperature operation, and compliance with AEC-Q200 and RoHS standards.
FAQ
What is the difference between 1.5KE68A-T and 1.5KE68CA-T?
The 1.5KE68A-T is unidirectional, with cathode band marking and forward conduction capability; the 1.5KE68CA-T is bidirectional, lacking polarity marking and symmetric clamping for AC-coupled lines. Both share identical 58.1V standoff and 92.0V clamping specs but differ in circuit placement and grounding strategy.
Can 1.5KE68A-T be used in place of a Zener diode for voltage regulation?
No-it is not designed for continuous regulation. Its 5.0W steady-state dissipation is only valid at TL=75°C with 9.5mm leads; sustained DC power above 100mW causes thermal runaway. Use only for transient suppression, not DC voltage reference or shunt regulation.
Is 1.5KE68A-T compliant with AEC-Q200 for automotive use?
While Diodes offers AEC-Q200-qualified variants in the 1.5KE family (e.g., 1.5KE68A-Q), the standard 1.5KE68A-T is not AEC-Q200 certified. For automotive applications, consult Diodes' automotive-grade product line or request PPAP documentation from their automotive sales team.
How does the DO-201 package affect thermal performance compared to DO-15?
The DO-201's larger epoxy body and longer leads (9.5mm) provide 2.5× higher thermal resistance to ambient than DO-15, enabling 5.0W steady-state dissipation at TL=75°C versus 3.0W for DO-15. This allows higher surge duty cycles without PCB copper pour or heatsinking.
1.5KE68A-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-201
1.5KE68A-T FAQ
1.How can I place an order for 1.5KE68A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE68A-T 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 1.5KE68A-T reliable?
The price and inventory of 1.5KE68A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE68A-T is usually 5 days.
3.What payment methods are accepted for 1.5KE68A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE68A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE68A-T?
1.5KE68A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE68A-T 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 1.5KE68A-T?
For technical support, including 1.5KE68A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE68A-T requirements.
6.How does Aetrix verify that 1.5KE68A-T is sourced from the original manufacturer or authorized distributors?
All 1.5KE68A-T 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 1.5KE68A-T meets industry standards.
7.What is the process for return or replacement of 1.5KE68A-T?
All 1.5KE68A-T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE68A-T, 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 1.5KE68A-T part is unused and in its original packaging.
Return procedure for 1.5KE68A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE68A-T Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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