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Vishay General Semiconductor - Diodes Division 1.5KE47HE3/73
- Part No.:
- 1.5KE47HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE47HE3/73.pdf
- Description:
- TVS DIODE 38.1VWM 67.8VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,323
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Product details
Overview
1.5KE47HE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary-side overvoltage protection in power rails and signal lines. It features a 47 V breakdown voltage (VBR = 44.7–49.4 V at 1 mA), 40.2 V standoff voltage (VWM), 64.8 V clamping voltage (VC) at 23.1 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5KE47HE3/73 datasheet, 1.5KE47HE3/73 pinout, 1.5KE47HE3/73 application, or 1.5KE47HE3/73 equivalent, this device delivers verified AEC-Q101 qualification (HE3 suffix), RoHS-compliant matte tin-plated leads, 175 °C max junction temperature, and UL 94 V-0 molded epoxy package - critical for automotive power supply protection, industrial motor drive I/O conditioning, and telecom line interface hardening.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when transient voltage exceeds VBR, it avalanches into low-impedance conduction, diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance.
It responds in <1 ns, clamps within 64.8 V at 23.1 A (10/1000 µs), and sustains 200 A non-repetitive forward surge (8.3 ms half-sine). Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15.4 °C/W, enabling reliable operation up to 175 °C junction temperature under pulsed stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1 mA - defines precise avalanche initiation threshold for repeatable clamping onset |
| VWM | 40.2 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 64.8 V at 23.1 A - clamping voltage during 1500 W transient, limiting downstream voltage stress |
| PPPM | 1500 W - peak pulse power handling capability with 10/1000 µs waveform, duty cycle ≤0.01 % |
| IFSM | 200 A - non-repetitive forward surge current rating (8.3 ms half-sine), supports high-energy inductive kick absorption |
| TJ max | 175 °C - maximum junction temperature, enabling use in under-hood automotive and industrial ambient 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
1.5KE47HE3/73 uses a 2-terminal axial-leaded DO-201AD (Case Style 1.5KE) package. The cathode is marked by a color band on the body; polarity must be observed in series connection with protected circuits.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction or transient clamping (unidirectional mode) | Connected to ground or low-impedance return path to complete surge current loop during overvoltage events |
| Cathode | Current exit terminal; marked by color band | Connected to protected line (e.g., +12 V rail or signal input); reverse-biased during normal operation, avalanches during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22 standards |
| Glass passivated junction | Ensures stable VBR tolerance (±5 %), low leakage (<1 µA at VWM), and long-term parameter stability |
| 1500 W peak pulse power (10/1000 µs) | Provides robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without degradation |
| UL 94 V-0 epoxy molding | Meets flammability safety requirements for enclosed industrial and automotive enclosures |
| Matte tin-plated leads | Complies with J-STD-002 and JESD 22-B102 solderability standards; JESD 201 Class 2 whisker resistant |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12 V battery-supplied ECUs exposed to load dump (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VBAT and chassis ground to clamp transients above 40.2 V. Use Value: Limits voltage to ≤64.8 V during 1500 W surges, preventing damage to MCU power inputs and CAN transceivers. |
Use Scenario: 4–20 mA current-loop sensors in factory automation subject to cable ESD and field wiring faults. IC Role / Device Role / Timing Role: TVS mounted across sensor output terminals to suppress fast-rising transients before they reach analog front-end op-amps. Use Value: Sub-1 ns response and 64.8 V clamping protect precision ADC references and instrumentation amplifiers from latch-up or parametric shift. |
| Telecom Line Interface Protection | AC-DC Power Supply Input Stage |
Use Scenario: DSL or Ethernet PHY interfaces connected to outdoor cabling vulnerable to induced lightning surges. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices (line-to-ground) on differential pairs to absorb common-mode surges. Use Value: 1500 W rating and 64.8 V clamping meet GR-1089-CORE Level 3 telecom surge immunity requirements. |
Use Scenario: Secondary-side DC bus (e.g., +48 V) in telecom rectifiers subjected to backfeed transients from hot-swap modules. IC Role / Device Role / Timing Role: TVS placed across bulk capacitor to clamp overshoot during sudden load removal or module insertion. Use Value: 200 A IFSM rating handles high-current inrush events without bond wire fusing; 175 °C TJ supports high-temperature board layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ45A | DO-214AA package (SMB), 45 V VWM, 70 V VC @ 17.1 A, 600 W PPPM | Lower power rating and surface-mount format - suitable for space-constrained PCBs but not direct replacement for 1500 W demands | Select SMBJ45A only when board area is limited and surge energy is ≤600 W; verify thermal relief for SMB footprint. |
| 1.5KE47A-E3/54 | Same 1.5KE package and electrical specs, but commercial-grade (non-AEC-Q101), E3 suffix only (no HE3 qualification) | Lacks automotive qualification; acceptable for industrial/commercial power supplies where AEC-Q101 is not mandated | Choose 1.5KE47A-E3/54 for cost-sensitive non-automotive designs requiring identical clamping behavior and package fit. |
Compared with 1.5KE47HE3/73, SMBJ45A offers smaller size but sacrifices 60 % peak power handling and automotive qualification; 1.5KE47A-E3/54 matches form, fit, and function but omits AEC-Q101 validation - making 1.5KE47HE3/73 the sole choice when both 1500 W surge immunity and automotive reliability are mandatory.
Availability
1.5KE47HE3/73 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom line surge suppression requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE47HE3/73 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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated through proven 1500 W clamping robustness.
FAQ
What is the breakdown voltage range of the 1.5KE47HE3/73?
The 1.5KE47HE3/73 has a guaranteed breakdown voltage (VBR) range of 44.7 V to 49.4 V at 1 mA test current, as specified in Vishay's Document Number 88301. This tight ±5 % tolerance ensures consistent clamping onset across production lots and enables precise coordination with downstream overvoltage thresholds in protected circuits. The value is measured under standard JEDEC conditions and applies to each individual 1.5KE47HE3/73 unit.
Is the 1.5KE47HE3/73 qualified for automotive applications?
Yes, the 1.5KE47HE3/73 carries the HE3 suffix, which denotes full AEC-Q101 qualification per Vishay's documentation. This includes stress testing for temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge - confirming suitability for under-hood and powertrain applications. The 1.5KE47HE3/73 is explicitly listed in the AEC-Q101 qualified subset (1.5KE6.8AHE3_B to 1.5KE220AHE3_B) in Revision 09-Aug-2022 of Document 88301.
What is the clamping voltage of the 1.5KE47HE3/73 at its rated peak pulse current?
The 1.5KE47HE3/73 clamps to a maximum of 64.8 V at its rated peak pulse current (IPPM) of 23.1 A, using the standardized 10/1000 µs double-exponential waveform. This value is measured per Figure 7 in Vishay's datasheet and represents the upper limit of voltage seen by protected circuitry during worst-case surge events - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings.
Does the 1.5KE47HE3/73 have a bidirectional variant?
No, the 1.5KE47HE3/73 is strictly unidirectional. Bidirectional variants in the 1.5KE family use the "CA" suffix (e.g., 1.5KE47CA), and Vishay limits bidirectional offerings to 1.5KE6.8CA through 1.5KE220CA only. Since 1.5KE47HE3/73 contains "HE3" and no "CA", it follows the unidirectional configuration with cathode band marking - confirmed in the "Polarity" section of Document 88301.
What package type does the 1.5KE47HE3/73 use, and what are its key mechanical properties?
The 1.5KE47HE3/73 uses the Case Style 1.5KE (DO-201AD) package: an axial-leaded, molded epoxy body measuring 0.210" × 0.285" with 0.375" lead length. It meets UL 94 V-0 flammability rating, features matte tin-plated leads compliant with J-STD-002, and passes JESD 201 Class 2 whisker testing. These properties ensure mechanical durability, solderability, and safety compliance in high-reliability assemblies.
1.5KE47HE3/73 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 38.1V
- Voltage - Breakdown (Min):
- 42.3V
- Voltage - Clamping (Max) @ Ipp:
- 67.8V
- Current - Peak Pulse (10/1000µs):
- 22.1A
- 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
1.5KE47HE3/73 FAQ
1.How can I place an order for 1.5KE47HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE47HE3/73 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 1.5KE47HE3/73 reliable?
The price and inventory of 1.5KE47HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE47HE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE47HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE47HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE47HE3/73?
1.5KE47HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE47HE3/73 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 1.5KE47HE3/73?
For technical support, including 1.5KE47HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE47HE3/73 requirements.
6.How does Aetrix verify that 1.5KE47HE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE47HE3/73 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 1.5KE47HE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE47HE3/73?
All 1.5KE47HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE47HE3/73, 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 1.5KE47HE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE47HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE47HE3/73 Tags
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