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Vishay General Semiconductor - Diodes Division 1.5KE39AHE3_B/C
- Part No.:
- 1.5KE39AHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE39AHE3_B/C.pdf
- Description:
- 1.5KW,39V 5%,UNIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,240
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Product details
Overview
1.5KE39AHE3_B/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), 1500 W peak pulse power (10/1000 µs), clamping voltage of 53.9 V at 27.8 A, and operates across -55 °C to +175 °C junction temperature. It is used in automotive power supply inputs and industrial sensor interface protection.
For engineers reviewing the 1.5KE39AHE3_B/C datasheet, 1.5KE39AHE3_B/C pinout, 1.5KE39AHE3_B/C application, or 1.5KE39AHE3_B/C equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJL = 15.4 °C/W), RoHS-compliant matte tin plating, and JEDEC 1.5KE package mechanical data - all confirmed from Vishay Document #88301 (Rev. 09-Aug-2022).
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its clamping behavior is defined by a 10/1000 µs waveform with 0.01% duty cycle, and it maintains stable performance up to 175 °C junction temperature.
The device complies with JESD 22-B106 (solder dip ≤275 °C for 10 s), meets UL 94 V-0 flammability rating, and supports 200 A non-repetitive forward surge current (8.3 ms half-sine). The HE3 suffix denotes AEC-Q101 qualification and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 37.1 V / 41.0 V at 1.0 mA - defines precise voltage threshold where clamping initiates under controlled test conditions |
| VWM | 33.3 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 53.9 V at 27.8 A - clamped voltage during 1500 W transient, critical for downstream IC survival margin |
| PPPM | 1500 W - peak pulse power handling capability with 10/1000 µs waveform, enabling robust lightning/ESD surge immunity |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance enables effective heat transfer to PCB copper without heatsink |
| TJ max | +175 °C - extended high-temperature operation supports under-hood automotive and industrial environments |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
Pinout & Package
Package: JEDEC Case Style 1.5KE - molded epoxy body with matte tin-plated leads, 0.375" (9.5 mm) lead length, UL 94 V-0 rated, 0.968 g unit weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to protected circuit ground or low-side return path during transient suppression |
| Cathode | Current exit point in forward bias; marked with color band | Connected to line being protected (e.g., 24 V rail); absorbs surge energy when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity on 12/24 V systems without derating |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive powertrain and body electronics applications requiring zero defect field performance |
| Low RθJL = 15.4 °C/W | Allows direct soldering to 2 oz copper PCBs without thermal vias for cost-effective thermal management |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth in high-reliability applications with >10-year service life expectations |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs against load dump transients (ISO 16750-2) and alternator switching spikes. IC Role / Device Role: Primary clamping element placed between power rail and ground, absorbing up to 1500 W surges. Use Value: Limits rail voltage to ≤53.9 V during 27.8 A transients, preserving downstream PMICs and microcontrollers rated for 36 V absolute max. | Use Scenario: Shielding analog outputs (e.g., 4–20 mA current loops) in PLC I/O modules from induced lightning surges on field wiring. IC Role / Device Role: Unidirectional shunt protector on signal line referenced to system ground. Use Value: Clamps transients within <1 ns while maintaining <1.0 µA leakage at 33.3 V, ensuring signal integrity and ADC accuracy. |
| Consumer Power Adapter Output Protection | Telecom DC Feeder Line Protection |
Use Scenario: Safeguarding USB-C PD and AC/DC adapter secondary-side outputs against ESD and capacitive coupling events. IC Role / Device Role: Secondary-side TVS on regulated 5–20 V output rails. Use Value: Withstands 1500 W pulses without degradation, enabling compliance with IEC 61000-4-2 Level 4 (15 kV air/8 kV contact) when combined with series impedance. | Use Scenario: Protecting -48 V DC telecom feeder lines from lightning-induced common-mode surges in remote cabinet installations. IC Role / Device Role: Unidirectional clamp referenced to negative rail, suppressing positive-going transients only. Use Value: Maintains 33.3 V standoff while delivering 53.9 V clamping, compatible with -48 V system headroom and legacy line card voltage tolerances. |
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 | Lower PPPM (600 W), smaller SMB package (RθJA = 110 °C/W), same VBR range (36.0–40.0 V) | Not AEC-Q101 qualified; limited to commercial-grade consumer/industrial use | Select when board space is constrained and automotive qualification is not required |
| 1.5KE39CA | Bidirectional variant (VBR = 37.1–41.0 V), identical PPPM, same HE3_AEC-Q101 qualification | Protects against both polarities of transients - required for AC-coupled or floating signal lines | Select when protecting differential pairs, RS-485 buses, or transformer-isolated interfaces |
Compared with 1.5KE39AHE3_B/C, SMBJ36A offers footprint savings but sacrifices automotive qualification and surge capacity, while 1.5KE39CA retains full AEC-Q101 compliance and 1500 W rating but enables bidirectional clamping - making it suitable for symmetric transient threats where polarity is undefined.
Availability
1.5KE39AHE3_B/C is available at Aetrix Electronics and suitable for automotive power distribution units, industrial programmable logic controllers, consumer power adapters, and telecom DC feeder systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5KE39AHE3_B/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, thermal performance, and automotive-grade validation.
The 1.5KE family was engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure applications where 1500 W surge handling and AEC-Q101 compliance are mandatory design requirements.
FAQ
What is the breakdown voltage tolerance for 1.5KE39AHE3_B/C?
The 1.5KE39AHE3_B/C has a specified breakdown voltage range of 37.1 V to 41.0 V at 1.0 mA test current, yielding ±5.3% tolerance about the nominal 39 V rating. This tight VBR window ensures consistent clamping onset across production lots and supports reliable coordination with downstream overvoltage protection circuits. All values are measured per JEDEC standards and documented in Vishay's 88301 datasheet (Rev. 09-Aug-2022).
Is 1.5KE39AHE3_B/C qualified for automotive applications?
Yes, 1.5KE39AHE3_B/C is AEC-Q101 qualified per Vishay Document #88301, specifically listed under Note (2) for "1.5KE6.8AHE3_B to 1.5KE220AHE3_B". This qualification covers temperature cycling, high-temperature reverse bias, and ESD testing required for under-hood and chassis-mounted automotive electronics. The HE3 suffix explicitly denotes AEC-Q101 compliance and JESD 201 Class 2 whisker resistance.
What is the maximum clamping voltage of 1.5KE39AHE3_B/C under surge conditions?
The maximum clamping voltage (VC) of 1.5KE39AHE3_B/C is 53.9 V at 27.8 A peak pulse current (IPPM), tested with a 10/1000 µs waveform. This value represents the upper limit of voltage seen by protected circuitry during worst-case transients and is critical for verifying safe operating margins of downstream components such as LDOs, DC/DC controllers, and microcontrollers. It is measured per ANSI/IEEE C62.35 and published in Table 1 of the Vishay 88301 datasheet.
Does 1.5KE39AHE3_B/C have lead-free and RoHS-compliant construction?
Yes, 1.5KE39AHE3_B/C is RoHS compliant and carries the "E3" base suffix indicating lead-free matte tin plating per J-STD-002 and JESD 22-B102. The "HE3" designation further confirms compliance with JESD 201 Class 2 whisker testing. The molded epoxy case meets UL 94 V-0 flammability rating, and material categorization aligns with Vishay's standard compliance documentation (www.vishay.com/doc?99912).
What is the thermal resistance from junction to lead (RθJL) for 1.5KE39AHE3_B/C?
The junction-to-lead thermal resistance (RθJL) for 1.5KE39AHE3_B/C is 15.4 °C/W, as specified in the Thermal Characteristics table of Vishay Document #88301. This low value enables efficient heat conduction from the silicon die directly into PCB copper through the leads, supporting reliable operation at full 1500 W pulse power without external heatsinking - especially when mounted on ≥2 oz copper with thermal relief pads.
1.5KE39AHE3_B/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:
- Active
- 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:
- Telecom
- 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_B/C FAQ
1.How can I place an order for 1.5KE39AHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE39AHE3_B/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_B/C reliable?
The price and inventory of 1.5KE39AHE3_B/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_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE39AHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE39AHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE39AHE3_B/C?
1.5KE39AHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE39AHE3_B/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_B/C?
For technical support, including 1.5KE39AHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE39AHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE39AHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE39AHE3_B/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_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE39AHE3_B/C?
All 1.5KE39AHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE39AHE3_B/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_B/C part is unused and in its original packaging.
Return procedure for 1.5KE39AHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE39AHE3_B/C Tags
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