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Vishay General Semiconductor - Diodes Division 1.5KE39CHE3/73
- Part No.:
- 1.5KE39CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE39CHE3/73.pdf
- Description:
- TVS DIODE 31.6VWM 56.4VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,026
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Product details
Overview
1.5KE39CHE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary 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 standoff voltage (VWM), 53.9 V clamping voltage (VC) at 27.8 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and operates across –55 °C to +175 °C junction temperature range.
For engineers reviewing the 1.5KE39CHE3/73 datasheet, 1.5KE39CHE3/73 pinout, 1.5KE39CHE3/73 application, or 1.5KE39CHE3/73 equivalent, this device serves as a robust, AEC-Q101-qualified transient protector for automotive power supply inputs, industrial sensor interfaces, and telecom line cards where fast clamping (<1 ns), low incremental surge resistance, and stable thermal performance are critical selection criteria.
Technical Context
This TVS diode employs a glass-passivated silicon junction optimized for high-energy transient suppression with minimal capacitance and sub-nanosecond response. Its unidirectional polarity enables integration into DC-biased circuits without reverse conduction concerns, while its 1.5KE case (DO-201AD) supports lead-free soldering per J-STD-002 and meets UL 94 V-0 flammability requirements.
The device delivers 1500 W peak pulse power under standardized 10/1000 µs waveform conditions, with clamping performance validated up to 27.8 A IPPM and thermal resistance of RθJL = 15.4 °C/W (junction-to-lead), enabling reliable operation without heatsinking in moderate-duty-cycle applications.
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 at which clamping initiates under controlled test conditions |
| VWM | 33.3 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA, ensuring no false triggering during normal operation |
| VC @ IPPM | 53.9 V at 27.8 A - clamped voltage seen by protected circuit during full-rated 1500 W transient, directly limiting downstream stress |
| PPPM | 1500 W - peak transient energy absorption capability using standard 10/1000 µs waveform, suitable for lightning-induced surges and inductive switching spikes |
| IPPM | 27.8 A - maximum non-repetitive surge current the device safely conducts without degradation when VC = 53.9 V |
| TJ range | –55 °C to +175 °C - wide operational junction temperature window supporting under-hood automotive and industrial environments |
| RθJL | 15.4 °C/W - low thermal resistance from junction to lead enables efficient heat dissipation through PCB copper, reducing need for external heatsinking |
Pinout & Package
Package: DO-201AD (Case Style 1.5KE), molded epoxy body with matte tin-plated leads; RoHS-compliant and AEC-Q101 qualified (HE3 suffix); cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to lower-potential side (e.g., ground or return) in unidirectional configuration; carries forward surge current during clamping |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., 39 V rail); avalanche breakdown occurs here during overvoltage events to shunt current away from load |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable, repeatable breakdown characteristics and long-term reliability under repeated surge stress |
| 1500 W peak pulse power (10/1000 µs) | Supports robust protection against IEC 61000-4-5 Level 4 surges and automotive load-dump transients without derating |
| Clamping time < 1 ns | Prevents voltage overshoot from reaching sensitive ICs before protection activates, preserving signal integrity |
| AEC-Q101 qualified (HE3 variant) | Validated for automotive powertrain and body electronics applications requiring zero-failure-rate reliability over lifetime |
| UL 94 V-0 compliant molding compound | Meets fire-safety requirements for enclosed industrial and transportation equipment enclosures |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 36 V battery-fed ECUs from load-dump transients (ISO 16750-2) and jump-start spikes. IC Role / Device Role / Timing Role: Primary clamping element placed between battery rail and DC-DC converter input. Use Value: Limits transient voltage to ≤53.9 V, preventing damage to downstream regulators rated for 45 V absolute max input. |
Use Scenario: Shielding 4–20 mA current-loop sensors in factory automation from ESD and cable-coupled noise. IC Role / Device Role / Timing Role: Unidirectional shunt protector on analog input side of signal conditioner IC. Use Value: Clamps induced surges within 1 ns while adding <1 pF parasitic capacitance, preserving loop bandwidth and accuracy. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Output Protection |
Use Scenario: Safeguarding PoE-powered Ethernet switch ports against lightning-induced common-mode surges on twisted-pair lines. IC Role / Device Role / Timing Role: Secondary-level TVS on DC bias feed line upstream of isolation transformer. Use Value: Absorbs 1500 W pulses without latch-up, maintaining PoE compliance (IEEE 802.3af/at) and avoiding service interruption. |
Use Scenario: Preventing output overvoltage failures in 36 V wall adapters used in smart home hubs and security cameras. IC Role / Device Role / Timing Role: Final-stage clamp on regulated output rail before connector. Use Value: Guarantees output stays below 54 V during fault conditions, satisfying UL 62368-1 touch-safe voltage 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 |
|---|---|---|---|
| SMBJ36A | Lower PPPM (600 W), smaller SMB package (lower IPPM = 16.7 A), VC = 58.1 V at 10.3 A | Better suited for space-constrained consumer PCBs; insufficient for automotive load-dump duty cycle | Select 1.5KE39CHE3/73 when 1500 W surge handling and AEC-Q101 qualification are mandatory |
| 1.5KE39A-E3/54 | Same electrical specs and DO-201AD package, but commercial-grade (non-AEC-Q101), HE3 suffix omitted | Limited to industrial/commercial use; not approved for automotive under-hood deployment | Choose 1.5KE39CHE3/73 for automotive OEM programs requiring certified reliability and traceable sourcing |
Compared with SMBJ36A and 1.5KE39A-E3/54, the 1.5KE39CHE3/73 uniquely combines AEC-Q101 qualification, 1500 W pulse rating, and DO-201AD mechanical robustness-making it the only option among the three qualified for automotive power rail protection where sustained thermal stability and zero latent failure are required.
Availability
1.5KE39CHE3/73 is available at Aetrix Electronics and suitable for automotive power systems, industrial sensor interfaces, and telecom infrastructure requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance.
Supply support for 1.5KE39CHE3/73 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 high-reliability diodes, MOSFETs, and passive components for demanding industrial and automotive applications.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments, emphasizing rugged packaging, stable clamping, and AEC-Q101 validation for mission-critical power and signal protection.
FAQ
What is the exact breakdown voltage range for 1.5KE39CHE3/73?
The 1.5KE39CHE3/73 has a guaranteed breakdown voltage (VBR) range of 37.1 V to 41.0 V at a test current of 1.0 mA, measured per JEDEC standard. This tight tolerance ensures predictable clamping onset across production lots and temperature extremes, critical for protecting 36 V nominal systems where overvoltage margin is narrow. The 1.5KE39CHE3/73 maintains this specification under full AEC-Q101 qualification testing.
Is 1.5KE39CHE3/73 bidirectional or unidirectional?
The 1.5KE39CHE3/73 is a unidirectional Transient Voltage Suppressor, indicated by the "A" suffix (not "CA"). It conducts only in reverse avalanche mode and blocks forward current up to 3.5 V at 100 A. Its cathode is marked with a color band, and it must be oriented with cathode toward the protected line. The 1.5KE39CHE3/73 is not rated for bidirectional operation-devices like 1.5KE39CA exist for AC or dual-polarity applications.
Does 1.5KE39CHE3/73 meet automotive reliability standards?
Yes, the 1.5KE39CHE3/73 carries the HE3 suffix, confirming AEC-Q101 qualification per Vishay's documentation (Rev. 09-Aug-2022, Doc. #88301). This includes stress testing for temperature cycling, humidity bias, and high-temperature operating life-validating suitability for under-hood automotive modules. The 1.5KE39CHE3/73 is explicitly listed in the AEC-Q101 qualified subset covering 1.5KE6.8AHE3_B to 1.5KE220AHE3_B.
What is the clamping voltage of 1.5KE39CHE3/73 at its rated surge current?
At its peak pulse current (IPPM) of 27.8 A, the 1.5KE39CHE3/73 clamps to a maximum of 53.9 V, measured using the standard 10/1000 µs waveform. This value represents the worst-case voltage imposed on the protected circuit during full-rated transient events and is verified across temperature and lot sampling. The 1.5KE39CHE3/73 achieves this with low incremental surge resistance, minimizing voltage overshoot beyond VC.
Can 1.5KE39CHE3/73 be used in surface-mount designs?
No, the 1.5KE39CHE3/73 uses the axial-leaded DO-201AD (Case Style 1.5KE) package and is intended for through-hole mounting only. Its leads are designed for manual or wave soldering with 0.375" (9.5 mm) lead length and comply with JESD 22-B106 (solder dip at 275 °C for 10 s). For SMT alternatives, consider SMAJ36A or SMCJ36A-neither matches the 1.5KE39CHE3/73's 1500 W rating or AEC-Q101 qualification.
1.5KE39CHE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 31.6V
- Voltage - Breakdown (Min):
- 35.1V
- Voltage - Clamping (Max) @ Ipp:
- 56.4V
- Current - Peak Pulse (10/1000µs):
- 26.6A
- 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
1.5KE39CHE3/73 FAQ
1.How can I place an order for 1.5KE39CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE39CHE3/73 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 1.5KE39CHE3/73 reliable?
The price and inventory of 1.5KE39CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE39CHE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE39CHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE39CHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE39CHE3/73?
1.5KE39CHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE39CHE3/73 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 1.5KE39CHE3/73?
For technical support, including 1.5KE39CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE39CHE3/73 requirements.
6.How does Aetrix verify that 1.5KE39CHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE39CHE3/73 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 1.5KE39CHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE39CHE3/73?
All 1.5KE39CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE39CHE3/73, 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 1.5KE39CHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE39CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE39CHE3/73 Tags
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