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Vishay General Semiconductor - Diodes Division 1.5KA47AHE3/73
- Part No.:
- 1.5KA47AHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA47AHE3/73.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:9,807
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Product details
Overview
1.5KA47AHE3/73 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode designed for high-energy surge protection in harsh environments. It delivers 1500 W peak pulse power (10/1000 µs), clamps at 64.8 V under 23.1 A surge current, and operates up to +185 °C junction temperature - ideal for protecting MOSFETs and sensor signal lines in automotive powertrain control units.
For engineers reviewing the 1.5KA47AHE3/73 datasheet, 1.5KA47AHE3/73 pinout, 1.5KA47AHE3/73 application, or 1.5KA47AHE3/73 equivalent, key selection criteria include its AEC-Q101 qualification, 40.2 V stand-off voltage, low 0.101 %/°C VBR temperature coefficient, and RoHS-compliant HE3 packaging with matte tin leads.
Technical Context
This TVS diode uses Vishay's patented PAR® construction for stable clamping under repetitive transients and features a molded epoxy case rated UL 94 V-0. Its unidirectional polarity and color-banded cathode enable straightforward integration into DC bus or signal-line protection circuits.
Rated for 200 A non-repetitive forward surge (8.3 ms half-sine), it maintains low incremental surge resistance and fast response time - critical for suppressing load-dump spikes and inductive switching transients in 12 V/24 V automotive systems without compromising downstream IC reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - withstands ISO 7637-2 Pulse 5a load-dump surges without failure |
| Stand-off Voltage (VWM) | 40.2 V - blocks normal 24 V system operation while triggering above overvoltage threshold |
| Clamping Voltage (VC @ IPPM) | 64.8 V @ 23.1 A - limits voltage seen by protected MOSFET or MCU I/O to safe level |
| Breakdown Voltage (VBR) | 44.7–49.4 V @ 1 mA - ensures precise, repeatable avalanche turn-on across temperature |
| Operating Temperature Range | −65 °C to +185 °C - supports under-hood placement in engine control modules |
| Surge Current Rating (IFSM) | 200 A (8.3 ms half-sine) - handles repeated cranking-induced surges per SAE J1113-11 |
| Temperature Coefficient of VBR | 0.101 %/°C - minimal drift over full automotive temperature range ensures stable protection margin |
Pinout & Package
Package: Case Style 1.5KA - axial-leaded, molded epoxy body with UL 94 V-0 rating; leads are matte tin-plated, solderable per J-STD-002 and JESD22-B102; HE3 suffix meets JESD 201 Class 2 whisker test; cathode denoted by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or low-side return path in unidirectional clamp configuration |
| Cathode | Current exit point during reverse-biased clamping | Connected to protected line (e.g., battery rail or sensor output); color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables consistent clamping performance across 1000+ surge cycles without parameter shift |
| AEC-Q101 qualified | Validated for automotive under-hood use including thermal cycling, humidity, and mechanical shock |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns rise time) |
| RoHS-compliant HE3 packaging | Meets automotive ELV directive and supports lead-free reflow/solder dip (260 °C, 40 s) |
| High-temperature stability | Specified operation to +185 °C enables placement near power electronics without derating |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Protecting microcontroller I/O and gate drivers from load-dump transients during alternator regulation faults. IC Role / Device Role / Timing Role: Unidirectional TVS clamp on 12 V supply rail and CAN transceiver power pins. Use Value: Limits voltage to ≤64.8 V during 1500 W surges, preventing latch-up or oxide breakdown in 3.3 V/5 V logic interfaces. |
Use Scenario: Safeguarding IGBT gate drivers and current-sense amplifiers against inductive kickback from 48 V BLDC motor windings. IC Role / Device Role / Timing Role: Primary overvoltage suppression on DC link between rectifier and inverter stage. Use Value: Clamps 200 A surge events within 1 ns, maintaining <100 ns response time to preserve driver timing integrity. |
| Automotive ADAS Camera Module | Telecom Power Interface |
Use Scenario: Shielding FPD-Link III serializer/deserializer signal lines from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on differential video data pairs. Use Value: Provides 64.8 V clamping without degrading 3 Gbps signal integrity due to optimized junction design. |
Use Scenario: Protecting PoE-powered Ethernet PHYs and DC-DC controllers from lightning-induced surges on 48 V input rails. IC Role / Device Role / Timing Role: Front-end transient suppression before primary DC-DC conversion stage. Use Value: Absorbs 1500 W surges per IEC 61000-4-5 Level 4 while maintaining 40.2 V stand-off for stable 48 V operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ48A-E3/52 | Lower PPPM (600 W), smaller SMB package (vs. axial 1.5KA), 48 V VBR min | Limited to lower-energy transients; not AEC-Q101 qualified; unsuitable for under-hood mounting | Select when board space is constrained and automotive qualification is not required |
| 1.5KE47A | Same VBR range but lower temperature rating (TJ max = 175 °C), no AEC-Q101 qualification, legacy DO-201 package | Not validated for automotive life-cycle stress testing; higher incremental resistance increases VC overshoot | Choose only for cost-sensitive industrial designs where +185 °C operation is unnecessary |
Compared with 1.5KA47AHE3/73, SMBJ48A-E3/52 offers compactness at the expense of energy handling and qualification, while 1.5KE47A sacrifices high-temperature reliability and automotive validation - making 1.5KA47AHE3/73 the sole option for AEC-Q101-compliant, high-power, high-temperature TVS protection.
Availability
1.5KA47AHE3/73 is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive protection, and telecom power interface applications requiring stable component supply, long-term lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for 1.5KA47AHE3/73 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 optoelectronics for demanding industrial and automotive applications.
The 1.5KA series was engineered specifically for AEC-Q101-compliant transient suppression in automotive power systems - emphasizing thermal robustness, surge endurance, and stable clamping under extended high-temperature operation.
FAQ
What is the maximum clamping voltage of the 1.5KA47AHE3/73 under specified surge conditions?
The 1.5KA47AHE3/73 exhibits a maximum clamping voltage (VC) of 64.8 V when subjected to its rated peak pulse current of 23.1 A using the standard 10/1000 µs waveform. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring compatibility with 60 V-rated downstream components.
Is the 1.5KA47AHE3/73 qualified for automotive applications?
Yes, the 1.5KA47AHE3/73 is explicitly AEC-Q101 qualified per the manufacturer's documentation (Document Number 88300, Note on page 3). This certification confirms successful completion of stress tests including temperature cycling, high-temperature operating life, and mechanical shock - validating its suitability for under-hood and powertrain applications in passenger vehicles and commercial trucks.
What does the HE3 suffix indicate on the 1.5KA47AHE3/73 part number?
On the 1.5KA47AHE3/73, the HE3 suffix denotes a RoHS-compliant, high-reliability variant meeting JESD 201 Class 2 whisker resistance requirements. It specifies matte tin-plated leads qualified for solder dip at 260 °C for 40 seconds and compliance with EU directives 2002/95/EC (RoHS) and 2002/96/EC (WEEE).
How does the 1.5KA47AHE3/73 differ from the non-A version (1.5KA47HE3/73)?
The 1.5KA47AHE3/73 features tighter breakdown voltage tolerance (44.7–49.4 V vs. 42.3–51.7 V for 1.5KA47HE3/73), improved temperature coefficient (0.101 %/°C vs. 0.101 %/°C - same spec but statistically controlled), and guaranteed AEC-Q101 qualification. The "A" suffix indicates enhanced parametric consistency and automotive-grade screening not present in the base 1.5KA47HE3/73 variant.
Can the 1.5KA47AHE3/73 be used in bidirectional configurations?
No - the 1.5KA47AHE3/73 is unidirectional only, as confirmed in the FEATURES section of its datasheet. It conducts in forward bias and clamps in reverse bias; for bidirectional protection, two devices must be connected in series opposition or a dedicated bidirectional TVS (e.g., 1.5KA47CA) must be selected instead.
1.5KA47AHE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- PAR®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- 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):
- 23.1A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KA
1.5KA47AHE3/73 FAQ
1.How can I place an order for 1.5KA47AHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA47AHE3/73 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 1.5KA47AHE3/73 reliable?
The price and inventory of 1.5KA47AHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA47AHE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KA47AHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA47AHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA47AHE3/73?
1.5KA47AHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA47AHE3/73 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 1.5KA47AHE3/73?
For technical support, including 1.5KA47AHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA47AHE3/73 requirements.
6.How does Aetrix verify that 1.5KA47AHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KA47AHE3/73 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 1.5KA47AHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KA47AHE3/73?
All 1.5KA47AHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA47AHE3/73, 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 1.5KA47AHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KA47AHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA47AHE3/73 Tags
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