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Taiwan Semiconductor Corporation 1.5KE39A R0G
- Part No.:
- 1.5KE39A R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE39A R0G.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:4,975
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Product details
Overview
1.5KE39A R0G from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 39 V, working stand-off voltage 33.3 V, clamping voltage 53.9 V at 29 A peak pulse current, and junction temperature rating up to +175°C. It protects automotive power electronics, industrial control inputs, and DC power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE39A R0G datasheet, 1.5KE39A R0G pinout, 1.5KE39A R0G application, or 1.5KE39A R0G equivalent, key selection criteria include unidirectional polarity, 10/1000 µs surge capability, low dynamic impedance, <1 µA leakage above 10 V, and AEC-Q101 qualification status - critical for automotive ECU and body electronics design.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped crowbar device during overvoltage events, triggering when reverse voltage exceeds its 37.1–41.0 V breakdown range at 1 mA test current. Its fast response time (<1.0 ps from 0 V to VBR) ensures protection before sensitive downstream ICs experience stress.
It delivers 1500 W peak pulse power per 10/1000 µs waveform, with clamping voltage held to ≤53.9 V at 29 A IPP, enabling robust suppression of load-dump and inductive switching spikes in 12 V/24 V automotive systems. Thermal derating follows JEDEC standards, maintaining safe operation up to +175°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1 mA | 37.1–41.0 V - defines precise conduction onset threshold for reliable overvoltage detection |
| VWM | 33.3 V - maximum continuous reverse operating voltage without significant leakage |
| VC @ IPP = 29 A | 53.9 V - clamped voltage seen by protected circuit during full 1500 W surge event |
| IPP (10/1000 µs) | 29 A - peak impulse current capability under standard automotive surge waveform |
| PPK | 1500 W - peak pulse power handling capacity, validated per Fig.3 waveform |
| Junction Temp (TJ) | −55°C to +175°C - enables deployment in under-hood automotive environments |
| Leakage (ID @ VWM) | <1 µA - negligible standby power loss and signal integrity impact in high-impedance circuits |
Pinout & Package
DO-201 axial-leaded package with cathode band marking; leads are pure tin plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground-reference terminal | Connected to system ground or low-side return path; establishes reference for clamping action |
| Cathode | Protected line input | Connected to line being protected (e.g., battery rail); conducts during overvoltage to shunt energy to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Low dynamic impedance | Enables tighter clamping and faster voltage stabilization during fast-rising transients |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) |
| RoHS & halogen-free | Complies with IEC 61249-2-21; UL 94V-0 molding compound supports environmentally compliant manufacturing |
| Fast response time | <1.0 ps rise-to-conduction - reacts before most microcontrollers or analog front-ends can be damaged |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protects BCM power supply inputs from load-dump transients during alternator regulation faults. IC Role / Device Role / Timing Role: Unidirectional TVS clamps reverse-biased surges on 12 V battery rail before they reach LDOs and MCU power domains. Use Value: Limits voltage to ≤53.9 V during 1500 W pulses, preventing latch-up or permanent damage to 5 V/3.3 V logic supplies. |
Use Scenario: Shields 24 V digital input optocoupler interfaces from inductive kickback from solenoid valves and contactors. IC Role / Device Role / Timing Role: Acts as primary front-end clamp on field-side input traces, absorbing energy before signal conditioning circuitry. Use Value: Maintains signal integrity by suppressing >1 kV transients within nanoseconds, avoiding false triggering or isolation barrier breakdown. |
| LED Headlamp Driver Power Stage | Telecom DC Power Feed Protection |
Use Scenario: Installed across MOSFET drain-source in buck-based LED drivers to absorb inductive energy during PWM turn-off. IC Role / Device Role / Timing Role: Voltage-triggered crowbar that diverts flyback energy away from power switch during switching transitions. Use Value: Enables use of lower-voltage-rated MOSFETs by clamping drain spikes to 53.9 V, reducing BOM cost and thermal stress. |
Use Scenario: Placed on −48 V telecom power feed lines to suppress lightning-induced surges entering central office equipment. IC Role / Device Role / Timing Role: Standoff protector on primary DC input, rated for long-duration transients per ITU-T K.20/21. Use Value: Withstands repeated 10/1000 µs surges up to 1500 W while maintaining <1 µA leakage at −33.3 V, preserving system efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ39A | Same DO-214AC (SMA) package; 37.1–41.0 V VBR, 53.3 V VC @ 29.3 A; slightly lower clamping but different footprint | Requires PCB layout change due to SMA vs. DO-201 lead spacing and body size | Select when surface-mount assembly is preferred and thermal pad access is available |
| ON Semiconductor 1.5SMC39A | DO-214AB (SMC) package; identical electrical specs (37.1–41.0 V VBR, 53.9 V VC @ 29 A), but larger body and higher thermal mass | Better power derating above 75°C ambient; suited for high-reliability industrial power supplies | Choose for elevated ambient temperature environments where DO-201 thermal limits may be exceeded |
Compared with SMAJ39A and 1.5SMC39A, the 1.5KE39A R0G offers axial-leaded DO-201 compatibility for through-hole production, AEC-Q101 qualification out-of-box, and proven performance in automotive load-dump scenarios - making it optimal for legacy or cost-sensitive automotive harness assemblies.
Availability
1.5KE39A R0G is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and LED driver power stage designs requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant surge immunity.
Supply support for 1.5KE39A R0G 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power devices since 1979.
The 1.5KE series was designed specifically for high-energy transient suppression in automotive and industrial power systems, emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and robust thermal performance in axial-leaded packages.
FAQ
What is the polarity configuration of the 1.5KE39A R0G?
The 1.5KE39A R0G is a unidirectional TVS diode, with cathode marked by a band on the DO-201 body. It conducts only when reverse-biased beyond its 37.1–41.0 V breakdown range, making it suitable for DC rail protection where polarity is fixed. Bidirectional variants (e.g., 1.5KE39CA) exist but are not applicable to this part number.
Does the 1.5KE39A R0G meet AEC-Q101 requirements?
Yes, the 1.5KE39A R0G is AEC-Q101 qualified, as confirmed in the manufacturer's documentation (Version O2104). This includes stress testing for temperature cycling, highly accelerated life testing (HALT), and electrostatic discharge - validating its suitability for automotive under-hood and chassis-mounted applications.
What is the maximum clamping voltage of the 1.5KE39A R0G under surge conditions?
The 1.5KE39A R0G has a maximum clamping voltage (VC) of 53.9 V at 29 A peak pulse current (IPP) under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and ensures protected circuits remain below critical voltage thresholds during worst-case transients.
Can the 1.5KE39A R0G be used in bidirectional signal lines?
No, the 1.5KE39A R0G is unidirectional and must not be used on AC or bidirectional signal paths. For such applications, select the bidirectional variant 1.5KE39CA, which provides symmetrical clamping in both polarities and is explicitly designated for data line or AC power protection.
What is the leakage current specification for the 1.5KE39A R0G at its working voltage?
At its working stand-off voltage of 33.3 V, the 1.5KE39A R0G exhibits a maximum blocking leakage current (ID) of less than 1 µA, as specified in the Electrical Characteristics table. This ultra-low leakage preserves signal integrity and minimizes standby power loss in high-impedance sensing or battery-powered circuits.
1.5KE39A R0G 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 29A
- 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
1.5KE39A R0G FAQ
1.How can I place an order for 1.5KE39A R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE39A R0G 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 1.5KE39A R0G reliable?
The price and inventory of 1.5KE39A R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE39A R0G is usually 5 days.
3.What payment methods are accepted for 1.5KE39A R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE39A R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE39A R0G?
1.5KE39A R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE39A R0G 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 1.5KE39A R0G?
For technical support, including 1.5KE39A R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE39A R0G requirements.
6.How does Aetrix verify that 1.5KE39A R0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE39A R0G 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 1.5KE39A R0G meets industry standards.
7.What is the process for return or replacement of 1.5KE39A R0G?
All 1.5KE39A R0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE39A R0G, 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 1.5KE39A R0G part is unused and in its original packaging.
Return procedure for 1.5KE39A R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE39A R0G Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
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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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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