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Diodes Incorporated 1.5KE15A-T
- Part No.:
- 1.5KE15A-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE15A-T.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:2,574
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Product details
Overview
1.5KE15A-T from Diodes Incorporated is a unidirectional 1500W transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 12.8V reverse standoff voltage, 14.3V minimum breakdown voltage at 1mA test current, 21.2V maximum clamping voltage at 71A peak pulse current, and operates across –55°C to +175°C. It is used in automotive body control modules to protect LIN bus transceivers from ISO 7637-2 load dump and inductive switching transients.
For engineers reviewing the 1.5KE15A-T datasheet, 1.5KE15A-T pinout, 1.5KE15A-T application, or 1.5KE15A-T equivalent, key selection criteria include clamping voltage margin relative to protected IC VCC, peak pulse current capability under 1.0ms 8/20μs waveform, temperature coefficient of breakdown voltage (0.084%/°C), and DO-201 axial lead mechanical compatibility with high-reliability through-hole PCB layouts.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction to achieve fast response time (<1ps) and stable clamping performance under repetitive surge events. Its DO-201 package supports axial mounting with 9.5mm lead length and 1.12g mass, enabling robust thermal dissipation during 1500W non-repetitive pulses.
The device exhibits a low 0.084%/°C voltage temperature coefficient and maintains ≤5μA reverse leakage at 12.8V standoff, ensuring minimal standby power loss in always-on automotive circuits. Its 21.2V clamping voltage at 71A provides ≥2.8V margin above a typical 15V rail, preventing false triggering while suppressing transients exceeding 100V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W at 1.0ms pulse - sustains single-event surges without failure in automotive load-dump scenarios |
| Reverse Standoff Voltage | 12.8V - maximum continuous DC voltage before significant leakage; sets upper limit for protected rail voltage |
| Breakdown Voltage | 14.3V min @ 1mA - guaranteed conduction onset threshold; ensures reliable turn-on before downstream IC damage |
| Clamping Voltage | 21.2V max @ 71A - limits transient voltage seen by protected circuit; defines safe operating margin vs. 24V system |
| Operating Temperature | –55°C to +175°C - supports under-hood placement in engine control units and transmission control modules |
| Leakage Current | ≤5.0μA @ 12.8V - negligible standby power draw in battery-sensitive applications like telematics modules |
| Temp. Coefficient | 0.084%/°C - predictable VBR drift over temperature; enables accurate margining in wide-ambient designs |
Pinout & Package
Package: DO-201 axial-leaded glass-passivated epoxy case, UL 94V-0 rated, 1.12g weight, 9.5mm lead length, tin-finished leads solderable per MIL-STD-202 Method 208. Marked with type number and cathode band for unidirectional polarity identification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink during reverse-biased clamping | Connected to ground or low-impedance return path; must handle full 71A surge current without trace fusing |
| Cathode | Protected line connection point | Connected to the rail being safeguarded (e.g., LIN bus line); voltage referenced to anode during clamping |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Enables stable parametric performance and long-term reliability under thermal cycling and humidity exposure |
| 1500W peak pulse rating | Meets ISO 7637-2 Pulse 5a (load dump) requirements for 12V automotive systems without derating |
| 0.084%/°C VBR tempco | Allows precise clamping margin calculation across full –40°C to +125°C ambient range in ECU designs |
| RoHS-compliant, halogen-free "Green" finish | Fulfills automotive OEM material compliance mandates (e.g., GMW3172, Ford WSS-M99P1111-A) |
| DO-201 mechanical robustness | Withstands 5G vibration and mechanical shock per AEC-Q200; suitable for under-dash and engine bay mounting |
Applications
| Automotive Body Control Module | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting LIN bus transceiver inputs against battery feed transients and relay coil flyback in door module ECUs. IC Role / Device Role: Primary overvoltage clamp on LIN data line, placed between transceiver and connector. Use Value: Clamps 100V+ transients to ≤21.2V within nanoseconds, preserving transceiver integrity without adding capacitance that degrades 19.2kbps signal integrity. |
Use Scenario: Safeguarding 24V digital input channels on programmable logic controller backplanes from field-wiring induced surges. IC Role / Device Role: Front-end transient suppressor on isolated input optocoupler supply rail. Use Value: Absorbs 1500W surges per IEC 61000-4-5 Level 4 (4kV) without degradation, maintaining channel isolation and reducing false-trigger rate. |
| Telecom Power Supply Input | Medical Diagnostic Equipment |
|
Use Scenario: Secondary-side overvoltage protection on +12V output of AC/DC front-end supplies feeding base station radios. IC Role / Device Role: Final-stage rail clamp after bulk filtering and regulation, before sensitive RF ICs. Use Value: Limits voltage excursions to 21.2V during capacitor discharge faults or rectifier failures, preventing latch-up in GaAs MMIC drivers. |
Use Scenario: Surge suppression on patient-connected sensor interface rails in portable ultrasound devices. IC Role / Device Role: Isolation barrier protection element on low-voltage analog front-end supply (±15V). Use Value: Provides 1500W surge handling with <5μA leakage, meeting IEC 60601-1 creepage/clearance and leakage current safety limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A | Lower 600W peak power; SMC (DO-214AB) surface-mount package; 24.4V clamping at 24.4A | Designed for space-constrained PCBs; unsuitable for 1500W load dump; requires layout-level thermal relief | Select when board area is critical and surge energy is limited to IEC 61000-4-5 Level 2 (1kV) |
| 1N6267A | Same DO-201 package; 1500W rating; higher 24.0V clamping at 62.5A; 0.097%/°C tempco | Looser clamping margin vs. 15V rail; less precise thermal tracking; legacy industrial stock | Choose only if existing BOM uses 1N6267A and clamping margin >9V is acceptable |
Compared with SMBJ15A and 1N6267A, the 1.5KE15A-T delivers optimal balance of high-energy clamping (1500W), tight 21.2V clamping ceiling, and automotive-grade thermal stability-making it preferred for new 12V system designs requiring ISO 7637-2 compliance.
Availability
1.5KE15A-T is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and medical diagnostic equipment requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE15A-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 semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, computing, and consumer markets.
The 1.5KE series is engineered for high-reliability transient suppression in harsh environments, with focus on automotive-grade thermal stability, AEC-Q200 alignment, and robust surge handling in DO-201 packaging.
FAQ
Is the 1.5KE15A-T RoHS and halogen-free compliant?
Yes. The 1.5KE15A-T meets EU RoHS 2011/65/EU and RoHS 3 2015/863/EU directives, with lead-free finish and halogen/antimony content below 900ppm bromine, 900ppm chlorine, and 1000ppm antimony-certified as Diodes' "Green" product per internal specification DS21503 Rev. 12.
What is the maximum clamping voltage at rated peak pulse current?
The maximum clamping voltage is 21.2V at 71A peak pulse current (IPP) under 1.0ms exponential waveform per Figure 1 in DS21503. This value is guaranteed across –55°C to +175°C junction temperature and defines the upper voltage limit imposed on protected circuitry during surge events.
Can the 1.5KE15A-T be used in bidirectional configurations?
No. The 1.5KE15A-T is unidirectional only. For bidirectional operation, use the 1.5KE15CA variant, which has identical electrical ratings but symmetrical breakdown in both polarities and no cathode marking-enabling protection of AC-coupled or floating signal lines such as RS-485 or CAN bus stubs.
Does this part meet AEC-Q200 qualification requirements?
The 1.5KE15A-T is manufactured in IATF 16949 certified facilities and supports PPAP documentation, but it is not formally AEC-Q200 qualified. For AEC-Q200 Grade 0–3 applications, Diodes recommends contacting their automotive team for qualified alternatives such as the P4SMAJ15A or SMAJ15A-Q series.
1.5KE15A-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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 71A
- 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
1.5KE15A-T FAQ
1.How can I place an order for 1.5KE15A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE15A-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 1.5KE15A-T reliable?
The price and inventory of 1.5KE15A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE15A-T is usually 5 days.
3.What payment methods are accepted for 1.5KE15A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE15A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE15A-T?
1.5KE15A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE15A-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 1.5KE15A-T?
For technical support, including 1.5KE15A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE15A-T requirements.
6.How does Aetrix verify that 1.5KE15A-T is sourced from the original manufacturer or authorized distributors?
All 1.5KE15A-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 1.5KE15A-T meets industry standards.
7.What is the process for return or replacement of 1.5KE15A-T?
All 1.5KE15A-T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE15A-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 1.5KE15A-T part is unused and in its original packaging.
Return procedure for 1.5KE15A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE15A-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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onsemi
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Diodes Incorporated
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Diodes Incorporated
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