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Vishay General Semiconductor - Diodes Division 1.5KE47AHE3_B/C
- Part No.:
- 1.5KE47AHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE47AHE3_B/C.pdf
- Description:
- 1.5KW,47V 5%,UNIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,049
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Product details
Overview
1.5KE47AHE3_B/C from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection of DC power rails and signal lines. It features a 47 V breakdown voltage (VBR = 44.7–49.4 V at 1.0 mA), 40.2 V maximum working 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 in automotive body control modules, industrial PLC I/O protection, and telecom power supply front-ends.
For engineers reviewing the 1.5KE47AHE3_B/C datasheet, 1.5KE47AHE3_B/C pinout, 1.5KE47AHE3_B/C application, or 1.5KE47AHE3_B/C equivalent, this part delivers verified AEC-Q101 qualification, RoHS-compliant matte tin-plated leads, 175 °C max junction temperature, and glass-passivated junction for stable transient suppression in harsh environments.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (<1.0 µA leakage at VWM), then switches to low-impedance conduction within <1 ns when transients exceed VBR. Its 1500 W peak pulse power handling is defined per JEDEC-standard 10/1000 µs waveform with 0.01% duty cycle, and thermal performance is characterized by RθJA = 75 °C/W and RθJL = 15.4 °C/W.
The device uses a molded epoxy case (Case Style 1.5KE) with UL 94 V-0 flammability rating and supports soldering per J-STD-002/JESD 22-B102. The HE3 suffix denotes AEC-Q101 qualification and JESD 201 Class 2 whisker resistance; polarity is marked by cathode band on the unidirectional package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1.0 mA - defines precise clamping onset threshold for reliable overvoltage detection |
| VWM | 40.2 V - maximum continuous DC or RMS operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 64.8 V at 23.1 A - clamped voltage during full 1500 W transient, limiting downstream stress |
| PPPM | 1500 W - peak surge power survivability with 10/1000 µs waveform, critical for lightning/inductive spike immunity |
| TJ max | +175 °C - enables operation in under-hood automotive or high-ambient industrial enclosures |
| Leakage @ VWM | ≤1.0 µA - ensures negligible standby power loss and no false triggering on stable rails |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: Case Style 1.5KE - axial-leaded, molded epoxy body (1.0" × 0.285", 25.4 mm × 7.2 mm), UL 94 V-0 rated, cathode band marked on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to protected line's lower-potential side (e.g., ground or return path) |
| Cathode | Current exit point during reverse-biased clamping | Connected to protected line's higher-potential side (e.g., +12 V rail); color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term parameter drift <0.1%/1000 hrs under bias |
| 1500 W peak pulse power (10/1000 µs) | Withstands EN 61000-4-5 Level 4 (4 kV) surges without degradation |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a) |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and eliminates whisker risk (JESD 201 Class 2) |
Applications
| Automotive Power Rail Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting 12 V battery-supplied ECUs from load dump (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Shunt-clamping TVS placed between power rail and chassis ground, responding in <1 ns to suppress spikes up to 120 V. Use Value: Limits rail voltage to ≤64.8 V during 1500 W transients, preventing damage to MCU power inputs and CAN transceivers. | Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers against field-wiring induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on dry-contact or optocoupler input circuits, absorbing inductive kickback from solenoid drivers. Use Value: Clamps transients to 64.8 V at 23.1 A, enabling robust interface design without additional series impedance or filtering. |
| Telecom Power Supply Input | Consumer Appliance Motor Drive Protection |
Use Scenario: Front-end surge protection on AC/DC adapter inputs subjected to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Unidirectional TVS connected across bulk capacitor input, clamping line-to-ground transients before rectification. Use Value: Withstands repetitive 10/1000 µs surges up to 1500 W while maintaining <1.0 µA leakage at 40.2 V nominal input. | Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines or HVAC blowers. IC Role / Device Role / Timing Role: Clamp diode across motor terminals, diverting inductive energy back into the supply rail during MOSFET turn-off. Use Value: Fast <1 ns response prevents MOSFET avalanche failure; 175 °C rating accommodates enclosed thermal environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ45A | Lower PPPM (600 W), smaller SMB package (vs. axial 1.5KE), VBR = 50–55.3 V | Better suited for PCB space-constrained designs; not AEC-Q101 qualified in standard grade | Select when board area is limited and automotive qualification is not required |
| 1.5KE47CA | Bidirectional variant (no polarity marking), same VBR/VC/PPPM, but rated only to 220 V VBR max | Required for AC-coupled or floating signal lines where polarity reversal may occur | Choose only for bidirectional protection needs; not a drop-in replacement for unidirectional layout |
Compared with 1.5KE47AHE3_B/C, SMBJ45A trades AEC-Q101 compliance and 1500 W capability for compactness, while 1.5KE47CA provides identical electrical specs but requires circuit redesign for symmetrical clamping - neither offers pin-compatible replacement without layout or qualification review.
Availability
1.5KE47AHE3_B/C is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom infrastructure requiring stable component supply with AEC-Q101 assurance and long-lifecycle support.
Supply support for 1.5KE47AHE3_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, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The 1.5KE family was engineered for high-energy transient suppression in demanding environments, targeting automotive, industrial, and telecom applications where 1500 W surge immunity and AEC-Q101 validation are mandatory.
FAQ
What is the breakdown voltage range of the 1.5KE47AHE3_B/C?
The 1.5KE47AHE3_B/C has a guaranteed breakdown voltage (VBR) range of 44.7 V to 49.4 V measured at 1.0 mA test current, per Vishay Document Number 88301. This tight tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage margining in safety-critical designs such as automotive body controllers. The 1.5KE47AHE3_B/C maintains this specification under TA = 25 °C and conforms to JEDEC standards for transient suppressors.
Is the 1.5KE47AHE3_B/C suitable for automotive applications?
Yes, the 1.5KE47AHE3_B/C is AEC-Q101 qualified (as indicated by the HE3 suffix), making it suitable for automotive applications including engine control units, infotainment power supplies, and ADAS sensor interfaces. It has passed stress tests for temperature cycling, high-temperature reverse bias, and electrostatic discharge per AEC-Q101 Rev D. The 1.5KE47AHE3_B/C also supports soldering per J-STD-002 and meets JESD 201 Class 2 whisker resistance requirements.
What is the clamping voltage of the 1.5KE47AHE3_B/C at its rated peak pulse current?
The 1.5KE47AHE3_B/C clamps to a maximum of 64.8 V at its rated peak pulse current of 23.1 A (IPPM), defined using the standard 10/1000 µs waveform. This value is critical for determining maximum stress on downstream components and is verified per Figure 7 in Vishay Document 88301. The 1.5KE47AHE3_B/C achieves this clamping performance with low incremental surge resistance, minimizing voltage overshoot during fast transients.
How does the 1.5KE47AHE3_B/C differ from the standard 1.5KE47A-E3?
The 1.5KE47AHE3_B/C differs from 1.5KE47A-E3 primarily in qualification and plating: the HE3 suffix confirms AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, whereas the E3 suffix only indicates RoHS compliance and commercial-grade qualification. Both share identical electrical specs (VBR, VC, PPPM) and package (Case Style 1.5KE), but the 1.5KE47AHE3_B/C is approved for automotive use while 1.5KE47A-E3 is not.
What is the maximum operating junction temperature for the 1.5KE47AHE3_B/C?
The maximum operating junction temperature (TJ) for the 1.5KE47AHE3_B/C is +175 °C, as specified in Vishay Document 88301. This rating allows reliable operation in under-hood automotive environments and enclosed industrial enclosures. Thermal derating begins above 25 °C ambient, with power dissipation reduced per the curve in Figure 5; the 1.5KE47AHE3_B/C maintains full 1500 W pulse capability only at TJ ≤ 25 °C, scaling linearly to zero at 175 °C.
1.5KE47AHE3_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):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 24A
- 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
1.5KE47AHE3_B/C FAQ
1.How can I place an order for 1.5KE47AHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE47AHE3_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 1.5KE47AHE3_B/C reliable?
The price and inventory of 1.5KE47AHE3_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 1.5KE47AHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE47AHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE47AHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE47AHE3_B/C?
1.5KE47AHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE47AHE3_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 1.5KE47AHE3_B/C?
For technical support, including 1.5KE47AHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE47AHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE47AHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE47AHE3_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 1.5KE47AHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE47AHE3_B/C?
All 1.5KE47AHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE47AHE3_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 1.5KE47AHE3_B/C part is unused and in its original packaging.
Return procedure for 1.5KE47AHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE47AHE3_B/C Tags
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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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Diodes Incorporated
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D12V0L1B2LP-7B
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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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