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Vishay General Semiconductor - Diodes Division 1.5KE39AHE3_A/C
- Part No.:
- 1.5KE39AHE3_A/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE39AHE3_A/C.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:6,737
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Product details
Overview
1.5KE39AHE3_A/C from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary-side overvoltage protection in DC power rails and signal lines. It features a 39 V breakdown voltage (VBR = 37.1–41.0 V at 1.0 mA), 33.3 V maximum working voltage (VWM), 53.9 V clamping voltage (VC) at 27.8 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces in industrial power supplies and automotive control modules.
For engineers reviewing the 1.5KE39AHE3_A/C datasheet, 1.5KE39AHE3_A/C pinout, 1.5KE39AHE3_A/C application, or 1.5KE39AHE3_A/C equivalent, this part delivers verified AEC-Q101 qualification (HE3 suffix), RoHS-compliant matte tin-plated leads, UL 94 V-0 molded epoxy package, and fast sub-nanosecond response for transient suppression in high-reliability 12–48 V systems.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches into low-impedance conduction to divert surge energy away from downstream components. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance under repetitive 10/1000 µs transients.
Designed for single-pulse and low-duty-cycle surge events, the 1.5KE39AHE3_A/C supports up to 200 A non-repetitive forward surge current (IFSM), maintains ≤1.0 µA leakage at VWM, and exhibits a +0.100 %/°C temperature coefficient of VBR - enabling predictable clamping behavior across –55 °C to +175 °C operating junction range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 37.1 V / 41.0 V at 1.0 mA - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| VWM | 33.3 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 53.9 V at 27.8 A - clamping voltage during 1500 W transient, limiting stress on protected ICs |
| PPPM | 1500 W - peak pulse power handling with 10/1000 µs waveform, suitable for lightning and inductive-switching surges |
| IFSM | 200 A - non-repetitive forward surge current rating (8.3 ms half-sine), supporting high-energy fault clearing |
| TJ range | –55 °C to +175 °C - wide junction temperature range enables use in under-hood automotive and industrial environments |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with 0.375" lead length, UL 94 V-0 compliant epoxy body |
Pinout & Package
Package: DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body with cathode band marking. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, rated for solder dip at 275 °C max for 10 s.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or low-side return path; conducts during forward surge events |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 36 V rail); avalanches when voltage exceeds VBR to clamp transients |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| 1500 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV line-to-ground) without degradation |
| Sub-nanosecond response time | Clamps transients within ~1 ns, protecting sensitive CMOS inputs before damage occurs |
| UL 94 V-0 flammability rating | Mold compound self-extinguishes, meeting safety requirements for enclosed industrial equipment |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Suppresses load-dump transients (up to 60 V, 100 ms) on 24 V battery-fed ECUs in commercial vehicles. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and chassis ground, clamping within 1 ns to limit voltage seen by MCU power pins. Use Value: Prevents latch-up or gate oxide rupture in 3.3 V/5 V logic powered from buck-converted 24 V, with validated AEC-Q101 qualification. |
Use Scenario: Protects 24 V digital input channels of programmable logic controllers against field-wiring induced surges from solenoid switching. IC Role / Device Role / Timing Role: Standoff device mounted at connector entry point; absorbs 1.5 kV/0.5 Ω IEC 61000-4-4 bursts before signal conditioning circuitry. Use Value: Maintains <1.0 µA leakage at 24 V nominal, ensuring clean logic thresholds while surviving 1500 W transients without derating. |
| Telecom DC Power Feeds | Sensor Signal Line Protection |
Use Scenario: Shields 48 V PoE-powered remote radio units from lightning-induced surges on outdoor feeder cables. IC Role / Device Role / Timing Role: Primary-stage TVS on DC input, coordinated with secondary MOVs and gas discharge tubes for staged protection. Use Value: Clamps to 53.9 V at 27.8 A, limiting stress on upstream DC/DC converters and enabling compliance with ITU-T K.21 heavy-duty requirements. |
Use Scenario: Safeguards analog outputs of pressure sensors in hydraulic control systems exposed to ESD and inductive kickback. IC Role / Device Role / Timing Role: Low-capacitance unidirectional suppressor placed directly at sensor connector, minimizing signal distortion. Use Value: Delivers 33.3 V working voltage margin above 30 V sensor supply, with <1.0 µA leakage preserving microamp-level output accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | DO-214AA package, 36 V VWM, 58.1 V VC @ 22.4 A, 600 W PPPM | Lower power rating and surface-mount format - suited for space-constrained PCBs but not direct replacement for high-energy 1500 W events | Select SMBJ36A only when board layout mandates SMD and surge energy is limited to IEC 61000-4-5 Level 2. |
| 1.5KE39CA | Bidirectional variant, same VBR/VC specs, symmetric clamping for AC-coupled or floating lines | Required for differential signal pairs, RS-485 buses, or transformer-isolated interfaces where polarity reversal occurs | Choose 1.5KE39CA instead of 1.5KE39AHE3_A/C only when protecting bidirectional signals or ungrounded circuits. |
Compared with SMBJ36A and 1.5KE39CA, the 1.5KE39AHE3_A/C provides higher surge robustness in axial-leaded form, AEC-Q101 qualification for automotive deployment, and optimized clamping for unidirectional DC rails - making it the preferred choice for high-reliability 24–48 V power protection where through-hole mounting and 1500 W capability are required.
Availability
1.5KE39AHE3_A/C is available at Aetrix Electronics and suitable for automotive control units, industrial PLCs, telecom power feeds, and sensor interface designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5KE39AHE3_A/C 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The 1.5KE series was developed for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness, AEC-Q101 compliance, and predictable clamping behavior are critical.
FAQ
What is the breakdown voltage tolerance of the 1.5KE39AHE3_A/C?
The 1.5KE39AHE3_A/C has a specified breakdown voltage range of 37.1 V to 41.0 V at 1.0 mA test current, representing a ±5.2% tolerance about the nominal 39 V rating. This tight VBR window ensures consistent triggering across production lots and enables precise coordination with downstream overvoltage protection circuits. The 1.5KE39AHE3_A/C datasheet confirms this range under standard JEDEC test conditions at TA = 25 °C.
Is the 1.5KE39AHE3_A/C suitable for automotive applications?
Yes, the 1.5KE39AHE3_A/C is AEC-Q101 qualified (as indicated by the HE3 suffix), making it suitable for automotive applications including engine control modules, body electronics, and ADAS power supplies. Its –55 °C to +175 °C operating junction temperature range, glass-passivated junction, and validation per AEC-Q101 stress tests ensure reliability in under-hood and chassis-mounted environments. The 1.5KE39AHE3_A/C meets automotive-grade whisker resistance (JESD 201 Class 2) and RoHS compliance requirements.
How does the clamping voltage of the 1.5KE39AHE3_A/C compare to its breakdown voltage?
The 1.5KE39AHE3_A/C clamps to 53.9 V at its rated peak pulse current of 27.8 A (10/1000 µs waveform), which is approximately 38% above its minimum breakdown voltage of 37.1 V. This VC–VBR margin reflects the device's low incremental surge resistance and ensures protected circuits experience minimal overvoltage during transient events. The 1.5KE39AHE3_A/C datasheet specifies this clamping performance under standardized surge conditions, confirming design headroom for 3.3 V/5 V logic interfaces fed from 24–48 V rails.
What package type does the 1.5KE39AHE3_A/C use, and what are its key mechanical properties?
The 1.5KE39AHE3_A/C uses the DO-201AD package (Case Style 1.5KE), an axial-leaded configuration with 0.375" (9.5 mm) lead length. Its molded epoxy body meets UL 94 V-0 flammability rating, and matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards. The 1.5KE39AHE3_A/C package supports solder dip at 275 °C for 10 s and passes JESD 201 Class 2 whisker testing - critical for high-reliability industrial and automotive assemblies.
Can the 1.5KE39AHE3_A/C be used in bidirectional signal protection?
No, the 1.5KE39AHE3_A/C is a unidirectional TVS diode, intended for DC rail protection where the cathode connects to the positive line and anode to ground. For bidirectional signal lines such as RS-485, CAN, or AC-coupled interfaces, the bidirectional variant 1.5KE39CA must be used instead. The 1.5KE39AHE3_A/C lacks symmetrical clamping and will conduct continuously if reverse-biased beyond its forward voltage (~3.5 V), potentially causing failure. Always verify polarity alignment before deploying the 1.5KE39AHE3_A/C.
1.5KE39AHE3_A/C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 27.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE39AHE3_A/C FAQ
1.How can I place an order for 1.5KE39AHE3_A/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE39AHE3_A/C 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 1.5KE39AHE3_A/C reliable?
The price and inventory of 1.5KE39AHE3_A/C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE39AHE3_A/C is usually 5 days.
3.What payment methods are accepted for 1.5KE39AHE3_A/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE39AHE3_A/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE39AHE3_A/C?
1.5KE39AHE3_A/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE39AHE3_A/C 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 1.5KE39AHE3_A/C?
For technical support, including 1.5KE39AHE3_A/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE39AHE3_A/C requirements.
6.How does Aetrix verify that 1.5KE39AHE3_A/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE39AHE3_A/C 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 1.5KE39AHE3_A/C meets industry standards.
7.What is the process for return or replacement of 1.5KE39AHE3_A/C?
All 1.5KE39AHE3_A/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE39AHE3_A/C, 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 1.5KE39AHE3_A/C part is unused and in its original packaging.
Return procedure for 1.5KE39AHE3_A/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE39AHE3_A/C Tags
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Diodes Incorporated
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