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Vishay General Semiconductor - Diodes Division 1.5KA47HE3/54
- Part No.:
- 1.5KA47HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA47HE3/54.pdf
- Description:
- TVS DIODE 38.1VWM 67.8VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:9,381
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Product details
Overview
1.5KA47HE3/54 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 67.8 V under 22.1 A surge current, and operates up to +185 °C junction temperature - enabling robust protection of automotive sensor signal lines and MOSFET gate drivers.
For engineers reviewing the 1.5KA47HE3/54 datasheet, 1.5KA47HE3/54 pinout, 1.5KA47HE3/54 application, or 1.5KA47HE3/54 equivalent, key selection criteria include its AEC-Q101 qualification, 38.1 V stand-off voltage, 42.3–51.7 V breakdown range, low 0.101 %/°C VBR tempco, and RoHS-compliant HE3 packaging with JESD201 Class 2 whisker resistance.
Technical Context
This TVS diode employs Vishay's patented PAR® construction for stable clamping under repetitive transients and high-temperature operation. Its unidirectional polarity and 1.5KA case style support fast response (<1 ns) and low incremental surge resistance - critical for suppressing load-dump spikes and inductive switching transients in 12 V/24 V automotive systems.
Rated for 200 A non-repetitive forward surge (8.3 ms half-sine), it maintains reliable performance across -65 °C to +185 °C junction range and meets UL 94 V-0 flammability requirements. The device is optimized for placement on signal lines upstream of sensitive ICs where low leakage (<1 µA at 38.1 V, TJ = 150 °C) and precise VWM/VBR margin are essential.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains high-energy automotive load-dump surges without degradation |
| Breakdown Voltage (VBR) | 42.3–51.7 V at 1 mA - ensures reliable triggering above system operating voltage |
| Stand-off Voltage (VWM) | 38.1 V - provides 10 % margin below min VBR, preventing false triggering |
| Clamping Voltage (VC) | 67.8 V at 22.1 A - limits downstream voltage stress during worst-case transients |
| Operating Temperature | -65 °C to +185 °C - supports under-hood deployment in AEC-Q101 qualified designs |
| Surge Current (IPPM) | 22.1 A (10/1000 µs) - defines maximum transient energy absorption capability |
| Tempco of VBR | 0.101 %/°C - enables predictable clamping shift over wide ambient ranges |
Pinout & Package
Package: Case Style 1.5KA - molded epoxy body with matte tin-plated leads; UL 94 V-0 rated; lead length 9.5 mm; diameter 4.8–5.3 mm; RoHS-compliant HE3 suffix (JESD201 Class 2 whisker tested).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to protected circuit ground or low-side return path |
| Cathode | Current exit point in forward bias; marked by color band | Connected to protected line (e.g., sensor supply or signal trace) to clamp to ground |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable clamping performance and reduced parameter drift after repeated surge events |
| AEC-Q101 qualification | Validates reliability for automotive under-hood applications including engine control and ADAS sensors |
| 1500 W peak pulse rating | Meets ISO 7637-2 and ISO 16750-2 load-dump immunity requirements for 24 V systems |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., relay coil de-energization) |
| RoHS-compliant HE3 packaging | Ensures long-term solder joint integrity and whisker resistance in high-reliability assemblies |
Applications
| Automotive Sensor Protection | Industrial Motor Drive I/O |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control modules exposed to load-dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor signal line and chassis ground to clamp voltage excursions above 38.1 V. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V ADC inputs while maintaining <1 µA leakage at operating voltage. | Use Scenario: Safeguarding digital I/O lines of PLC input modules connected to inductive solenoid loads in factory automation. IC Role / Device Role / Timing Role: Standoff-clamp TVS on 24 V DC input channels to absorb turn-off spikes from 2 A solenoids. Use Value: Limits transient voltage to ≤67.8 V, preserving optocoupler isolation integrity and avoiding false triggering. |
| Automotive Lighting Control | Telecom Power Interface |
Use Scenario: Shielding LED driver ICs in headlamp modules from alternator ripple and battery reversal events. IC Role / Device Role / Timing Role: High-temp TVS on 12 V supply rail upstream of buck controller to suppress >100 V spikes. Use Value: Sustains operation at +150 °C ambient with no derating loss - critical for sealed lamp housings. | Use Scenario: Protecting PoE-powered Ethernet switch ports against lightning-induced surges on 48 V DC input rails. IC Role / Device Role / Timing Role: Primary clamping device on DC input before DC-DC converter, rated for 1500 W unidirectional pulses. Use Value: Achieves 67.8 V clamping at 22.1 A - compatible with IEEE 802.3bt surge immunity thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47A-E3/52 | 600 W rating, SMB package (smaller footprint), lower IPPM (12.3 A), same VWM/VBR range | Targeted at space-constrained consumer/industrial PCBs; not AEC-Q101 qualified | Select when board area is limited and automotive qualification is not required |
| 1.5KE47A | Same 1500 W rating and VBR range but TO-204AA (DO-201AE) package; no HE3 whisker testing or AEC-Q101 validation | General-purpose industrial surge protection; lacks automotive reliability documentation | Select for cost-sensitive non-automotive designs where long-term whisker risk is acceptable |
Compared with 1.5KA47HE3/54, SMBJ47A-E3/52 offers smaller size but sacrifices 50 % pulse power and automotive qualification; 1.5KE47A matches power but lacks AEC-Q101 validation and JESD201 whisker resistance - making 1.5KA47HE3/54 the only choice for production automotive ECUs requiring full compliance.
Availability
1.5KA47HE3/54 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial motor drive I/O, and telecom power interface applications requiring stable component supply, AEC-Q101 validation, and high-temperature reliability.
Supply support for 1.5KA47HE3/54 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, rectifiers, and protection devices for demanding industrial and automotive applications.
The 1.5KA series was engineered specifically for AEC-Q101-compliant transient suppression in automotive powertrain and body electronics - emphasizing thermal stability, surge endurance, and long-term whisker resistance in molded epoxy packages.
FAQ
What is the clamping voltage of the 1.5KA47HE3/54 under peak surge conditions?
The 1.5KA47HE3/54 clamps to a maximum of 67.8 V at its rated peak pulse current of 22.1 A using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and reflects worst-case voltage seen by downstream components during surge events. The 1.5KA47HE3/54 achieves this clamping with low incremental resistance, ensuring consistent protection across its operational temperature range.
Is the 1.5KA47HE3/54 qualified for automotive use?
Yes, the 1.5KA47HE3/54 is explicitly AEC-Q101 qualified and designated as automotive grade in Vishay's documentation (Document 88300). Its HE3 suffix confirms RoHS compliance, high-reliability construction, and JESD201 Class 2 whisker resistance - all mandatory for under-hood deployment. The 1.5KA47HE3/54 is intended for engine control units, ADAS sensors, and lighting modules where qualification evidence is contractually required.
What does the "HE3/54" suffix mean in 1.5KA47HE3/54?
The "HE3" suffix denotes Vishay's high-reliability, RoHS-compliant packaging with matte tin plating and JESD201 Class 2 whisker resistance. "54" specifies the preferred package code: 13-inch paper tape and reel, 1400 units per reel. This ordering format ensures traceable, automated assembly-ready supply - critical for high-volume automotive manufacturing where the 1.5KA47HE3/54 is deployed in safety-critical signal paths.
How does the 1.5KA47HE3/54 differ from the 1.5KA47A variant?
The 1.5KA47HE3/54 and 1.5KA47A share identical electrical characteristics - including 42.3–51.7 V VBR, 38.1 V VWM, and 67.8 V VC. The distinction lies in packaging and qualification: 1.5KA47HE3/54 carries the HE3 suffix (AEC-Q101, JESD201 Class 2), while 1.5KA47A lacks those certifications. Thus, the 1.5KA47HE3/54 is the only version approved for production automotive ECUs requiring documented reliability evidence.
What is the maximum operating temperature for the 1.5KA47HE3/54?
The 1.5KA47HE3/54 has a specified operating junction temperature range of -65 °C to +185 °C, validated per AEC-Q101 test conditions. Its thermal design supports continuous operation at +150 °C ambient in engine bay applications when mounted with appropriate copper pour. Derating begins above 25 °C ambient per Figure 2 in Document 88300, and the 1.5KA47HE3/54 maintains full 1500 W pulse capability only at TJ ≤ 25 °C - a key constraint for thermal layout planning.
1.5KA47HE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- 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:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KA
1.5KA47HE3/54 FAQ
1.How can I place an order for 1.5KA47HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA47HE3/54 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 1.5KA47HE3/54 reliable?
The price and inventory of 1.5KA47HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA47HE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KA47HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA47HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA47HE3/54?
1.5KA47HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA47HE3/54 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 1.5KA47HE3/54?
For technical support, including 1.5KA47HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA47HE3/54 requirements.
6.How does Aetrix verify that 1.5KA47HE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KA47HE3/54 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 1.5KA47HE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KA47HE3/54?
All 1.5KA47HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA47HE3/54, 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 1.5KA47HE3/54 part is unused and in its original packaging.
Return procedure for 1.5KA47HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA47HE3/54 Tags
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