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Diodes Incorporated 1.5KE75A-T
- Part No.:
- 1.5KE75A-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE75A-T.pdf
- Description:
- TVS DIODE 64.1VWM 103VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:6,201
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Product details
Overview
1.5KE75A-T from Diodes Incorporated is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 axial package, with 64.1V reverse standoff voltage, 71.3V minimum breakdown voltage at 1mA test current, and 103V maximum clamping voltage at 14.6A 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 1.5KE75A-T datasheet, 1.5KE75A-T pinout, 1.5KE75A-T application, or 1.5KE75A-T equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, temperature coefficient of breakdown voltage (0.105%/°C), unidirectional polarity marking (cathode band), and DO-201 mechanical compatibility with through-hole PCB layouts.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal bias it presents <5μA leakage at 64.1V, then avalanches sharply at ≥71.3V to divert transient energy away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low capacitance (<100pF typical).
The device uses a single-junction silicon avalanche structure optimized for 1.0ms 8/20μs waveform compliance. Its 1.12g mass and transfer-molded epoxy package (UL 94V-0 rated) support thermal dissipation up to 5.0W steady-state at 75°C lead temperature, enabling reliable operation in high-ambient environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W at 1.0ms pulse - sustains 8/20μs surges up to 14.6A without degradation |
| Reverse Standoff Voltage | 64.1V - maximum continuous DC voltage before leakage exceeds 5μA |
| Breakdown Voltage | 71.3V min @ 1mA - precise avalanche onset threshold for predictable clamping |
| Clamping Voltage | 103V max @ 14.6A - limits transient voltage seen by protected ICs during surge events |
| Temp. Coefficient | 0.105%/°C - enables accurate VBR derating across -55°C to +175°C operating range |
| Package | DO-201 axial - industry-standard through-hole footprint with 9.5mm lead length for 75°C thermal rating |
| RoHS Status | Lead-free, halogen-free, antimony-free - compliant with EU RoHS 3 (2015/863/EU) |
Pinout & Package
DO-201 package: axial-leaded, glass-passivated silicon junction, tin-finished leads solderable per MIL-STD-202 Method 208. Cathode identified by black band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink path | Connected to ground or low-impedance return; carries full surge current during clamping |
| Cathode | Protected line connection | Connected to rail being protected (e.g., 48V supply); voltage referenced to anode during conduction |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Ensures stable breakdown voltage and low leakage over lifetime and temperature cycling |
| 1500W peak pulse rating | Supports IEC 61000-4-5 Level 4 (4kV) surge immunity in industrial power inputs |
| Fast response time (<1ps) | Clamps transients before sensitive downstream ICs experience overvoltage stress |
| Unidirectional polarity | Prevents reverse-bias damage to DC-coupled circuits while blocking normal forward current |
| DO-201 mechanical standardization | Enables drop-in replacement in legacy designs and compatibility with automated axial insertion equipment |
Applications
| Industrial Power Supply Input Protection | Automotive Body Control Module (BCM) Power Rail |
|---|---|
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: Shunt clamping element that diverts >100A surge currents away from upstream rectifier and downstream DC-DC controller. Use Value: Limits voltage excursion to ≤103V during 14.6A transients, preserving 100V-rated input capacitors and MOSFETs. |
Use Scenario: 12V battery feed to BCM microcontroller and CAN transceiver, subject to ISO 7637-2 Pulse 1/2/5a surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power rail, activated within picoseconds of transient onset. Use Value: Maintains rail voltage below 103V during 100V/50A pulses, preventing latch-up or permanent damage to 16-bit MCU core. |
| Telecom Remote Radio Unit (RRU) DC Feeds | Renewable Energy Inverter DC Link |
Use Scenario: -48V DC power input to outdoor RRU enclosure, exposed to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: First-line transient suppression before DC-DC conversion and signal conditioning stages. Use Value: Withstands repeated 1500W pulses without parameter shift, ensuring 10-year field reliability in telecom infrastructure. |
Use Scenario: 600V DC link between PV array and inverter H-bridge, requiring protection against switching transients and grid faults. IC Role / Device Role / Timing Role: Secondary clamping device paralleled with MOVs to handle fast-rising edge transients missed by bulk suppressors. Use Value: Clamps sub-100ns spikes to <103V, protecting IGBT gate drivers from dv/dt-induced false triggering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A | Same 75V VRWM, but 600W rating in SMB package - lower peak power, surface-mount only | Requires PCB redesign for SMT layout; unsuitable for high-energy 1.5KE-class surges | Select when board space is constrained and surge energy is limited to ≤600W |
| 1.5SMC75A | Same 75V rating and 1500W rating, but in SMC package - identical electrical specs, different mechanical form factor | Requires retooling for SMT assembly; lacks axial lead flexibility for prototyping or high-vibration mounting | Select when transitioning to full SMT production and DO-201 insertion is unavailable |
Compared with SMBJ75A and 1.5SMC75A, the 1.5KE75A-T offers proven axial-leaded robustness for high-reliability through-hole applications, maintains identical clamping performance at full 1500W, and supports legacy manufacturing without requalification.
Availability
1.5KE75A-T is available at Aetrix Electronics and suitable for industrial power supply input protection, automotive body control module (BCM) power rail hardening, and renewable energy inverter DC link surge suppression requiring stable component supply and long-term lifecycle continuity.
Supply support for 1.5KE75A-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, manufacturing, and sales operations across Asia, Europe, and North America.
The 1.5KE series belongs to Diodes' transient voltage suppressor portfolio, engineered specifically for high-energy surge protection in industrial, automotive, and telecom power systems where reliability under repetitive stress is critical.
FAQ
What is the difference between 1.5KE75A-T and 1.5KE75CA-T?
The "A" suffix denotes unidirectional operation with cathode band marking; "CA" indicates bidirectional configuration with no polarity marking. The 1.5KE75A-T clamps only positive transients relative to ground, while the CA version protects both polarities - essential for AC-coupled or floating-rail applications but unnecessary for standard DC power rails.
Can 1.5KE75A-T be used in place of a Zener diode for voltage regulation?
No - this device is optimized for transient suppression, not steady-state regulation. Its 5.0W steady-state dissipation is insufficient for continuous Zener operation, and its ±10% VBR tolerance (71.3–78.8V) lacks the precision required for regulation. Use dedicated Zener diodes like BZX84-C75 for voltage reference applications.
What is the maximum allowable PCB trace length between 1.5KE75A-T and the protected IC?
For effective clamping, keep the total loop inductance below 10nH. At 14.6A peak current with 100V/ns dv/dt, a 5mm trace adds ~5nH - so combined anode-to-ground and cathode-to-rail traces should not exceed 10mm total length. Use wide, short paths and direct ground plane connections to minimize inductive voltage overshoot.
Does 1.5KE75A-T meet AEC-Q200 requirements for automotive use?
No - the datasheet states automotive-qualified versions require explicit AEC-Q200 certification and PPAP capability, which this part does not carry. For automotive applications, contact Diodes Incorporated for AEC-Q200 qualified equivalents such as the P4SMA75A-Q or SMAJ75A-Q series, which undergo stress testing per the standard.
1.5KE75A-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):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 14.6A
- 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
1.5KE75A-T FAQ
1.How can I place an order for 1.5KE75A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE75A-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 1.5KE75A-T reliable?
The price and inventory of 1.5KE75A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE75A-T is usually 5 days.
3.What payment methods are accepted for 1.5KE75A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE75A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE75A-T?
1.5KE75A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE75A-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 1.5KE75A-T?
For technical support, including 1.5KE75A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE75A-T requirements.
6.How does Aetrix verify that 1.5KE75A-T is sourced from the original manufacturer or authorized distributors?
All 1.5KE75A-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 1.5KE75A-T meets industry standards.
7.What is the process for return or replacement of 1.5KE75A-T?
All 1.5KE75A-T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE75A-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 1.5KE75A-T part is unused and in its original packaging.
Return procedure for 1.5KE75A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE75A-T Tags
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Diodes Incorporated
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