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Vishay General Semiconductor - Diodes Division 1.5KA8.2HE3/54
- Part No.:
- 1.5KA8.2HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA8.2HE3/54.pdf
- Description:
- TVS DIODE 6.63VWM 12.5VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:4,609
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Product details
Overview
1.5KA8.2HE3/54 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode designed for primary overvoltage protection in power and signal lines. It features 7.38 V to 9.02 V breakdown voltage (VBR), 1500 W peak pulse power (10/1000 µs), 12.5 V clamping voltage at 120 A, 6.5 W steady-state power dissipation, and AEC-Q101 qualification for under-hood automotive electronics.
For engineers reviewing the 1.5KA8.2HE3/54 datasheet, 1.5KA8.2HE3/54 pinout, 1.5KA8.2HE3/54 application, or 1.5KA8.2HE3/54 equivalent, key selection criteria include clamping performance under 120 A surge, thermal stability up to +185 °C junction temperature, RoHS-compliant matte tin-plated leads, and compatibility with J-STD-002 solderability standards.
Technical Context
This TVS diode employs Vishay's patented PAR® construction for low incremental surge resistance and stable clamping across temperature. Its unidirectional polarity and 10 mA test current ensure precise VBR definition per ANSI/IEEE C62.35, with clamping validated at IPPM = 120 A using standardized 10/1000 µs waveform.
Designed for high-reliability automotive environments, it operates from –65 °C to +185 °C, supports 200 A non-repetitive forward surge (8.3 ms half-sine), and maintains <200 µA reverse leakage at 6.63 V stand-off voltage - critical for low-power sensor line protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.38 V / 9.02 V - defines reliable turn-on threshold for overvoltage detection at 10 mA test current |
| VC @ IPPM | 12.5 V at 120 A - maximum clamped voltage during 1500 W transient, limiting stress on downstream ICs |
| PPPM | 1500 W - peak surge power handling capability with 10/1000 µs waveform per REA standard |
| TJ max. | +185 °C - enables placement near hot engine control units without derating loss |
| IFSM | 200 A - withstands 8.3 ms inductive switch-off surges common in automotive solenoid drivers |
| VWM | 6.63 V - maximum continuous reverse operating voltage before significant leakage begins |
| Package | Case Style 1.5KA - axial-leaded, molded epoxy body meeting UL 94 V-0 flammability rating |
Pinout & Package
Case Style 1.5KA is an axial-leaded package with cathode indicated by a color band. Leads are matte tin-plated and compliant with J-STD-002 solderability requirements. The device has two terminals: anode and cathode - no internal circuitry or multi-pin configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to ground or low-side return path in unidirectional TVS configurations |
| Cathode | Current exit point in forward bias; protected line connection in reverse-bias clamping | Connected to the line being protected (e.g., 12 V rail or sensor signal); color band identifies this end |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables consistent low dynamic impedance and repeatable clamping across 1000+ surge events |
| AEC-Q101 qualified | Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock |
| 1500 W peak pulse power (10/1000 µs) | Protects against ISO 7637-2 Pulse 1, 2a, 3a/b, and ISO 16750-2 load dump transients |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response time implied by construction) |
| RoHS-compliant, whisker-tested (JESD201 Class 2) | Ensures long-term reliability in lead-free reflow and high-vibration automotive assemblies |
Applications
| Automotive Power Rail Protection | Engine Control Unit (ECU) Input Protection |
|---|---|
Use Scenario: Suppressing load dump transients on 12 V battery-fed circuits in modern vehicles. IC Role / Device Role / Timing Role: Primary clamping device placed directly at ECU power input, ahead of DC/DC converters and LDOs. Use Value: Limits voltage to ≤12.5 V during 1500 W surges, preventing damage to 16 V-rated regulators and microcontrollers. |
Use Scenario: Protecting analog sensor inputs (e.g., MAP, TPS) from inductive switching noise in engine bays. IC Role / Device Role / Timing Role: Unidirectional shunt clamp on low-current signal lines interfacing with 3.3 V or 5 V ADC front-ends. Use Value: Maintains <200 µA leakage at 6.63 V stand-off, preserving signal integrity while clamping >7.38 V transients within 1 ns. |
| Industrial Motor Drive Gate Protection | Telecom Power Interface Surge Suppression |
Use Scenario: Safeguarding MOSFET gate drivers from cross-talk and flyback spikes in BLDC inverters. IC Role / Device Role / Timing Role: Secondary-level TVS mounted at gate driver output, between driver IC and power MOSFET gate. Use Value: Clamps gate-source voltage to ≤12.5 V during 120 A transient events, preventing oxide breakdown in 25 V-rated MOSFETs. |
Use Scenario: Front-end protection for PoE-powered network switches exposed to lightning-induced surges on Ethernet lines. IC Role / Device Role / Timing Role: Standoff protector on 48 V DC input rails prior to DC/DC conversion stages. Use Value: Withstands repeated 1500 W pulses while maintaining 6.5 W steady-state dissipation on heatsinked PCB traces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A | Lower PPPM (600 W), smaller SMB package, bidirectional option available | Better suited for space-constrained board layouts; not AEC-Q101 qualified | Select when automotive qualification is unnecessary and board area is limited |
| 1.5KE8.2A | Same VBR range but legacy DO-201 package; lower thermal robustness (TJ max = 175 °C) | Lacks AEC-Q101 validation and PAR® construction; higher clamping variance | Choose only for cost-sensitive industrial designs where +185 °C operation is not required |
Compared with SMBJ8.0A and 1.5KE8.2A, the 1.5KA8.2HE3/54 delivers superior thermal endurance (+185 °C), automotive qualification, and tighter clamping consistency - making it the preferred choice for mission-critical automotive power rail protection where reliability outweighs footprint savings.
Availability
1.5KA8.2HE3/54 is available at Aetrix Electronics and suitable for automotive power rail protection, engine control unit (ECU) input protection, industrial motor drive gate protection, and telecom power interface surge suppression requiring stable component supply and full traceability.
Supply support for 1.5KA8.2HE3/54 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, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The 1.5KA series was engineered specifically for AEC-Q101-compliant transient suppression in harsh automotive environments - emphasizing thermal stability, surge repeatability, and long-term parametric consistency under temperature cycling and vibration.
FAQ
What is the clamping voltage of the 1.5KA8.2HE3/54 under maximum surge conditions?
The 1.5KA8.2HE3/54 exhibits a maximum clamping voltage (VC) of 12.5 V at its rated peak pulse current (IPPM) of 120 A, measured using the standardized 10/1000 µs waveform. This value ensures downstream components see limited overvoltage stress during transient events, and is guaranteed across the full operating temperature range per Vishay Document 88300.
Is the 1.5KA8.2HE3/54 suitable for automotive under-hood applications?
Yes, the 1.5KA8.2HE3/54 is explicitly AEC-Q101 qualified and rated for junction temperatures up to +185 °C - making it suitable for under-hood automotive applications such as engine control units, transmission control modules, and body control modules. Its PAR® construction and JESD201 Class 2 whisker-tested leads further validate its suitability for high-vibration, high-temperature environments.
What does the "HE3/54" suffix indicate in 1.5KA8.2HE3/54?
The "HE3" suffix denotes RoHS-compliant, high-reliability, automotive-grade construction per Vishay's internal specification, including matte tin-plated leads and JESD201 Class 2 whisker resistance. The "/54" indicates packaging in 13-inch diameter paper tape and reel, with a base quantity of 1400 units - confirmed in the Ordering Information section of Document 88300.
How does the 1.5KA8.2HE3/54 differ from the 1.5KA8.2A variant?
The 1.5KA8.2HE3/54 corresponds to the standard 1.5KA8.2 device in HE3 packaging - identical electrically to 1.5KA8.2A in breakdown voltage (7.79–8.61 V), clamping (12.1 V), and surge ratings. The "A" suffix denotes tighter VBR tolerance (±5% vs. ±10% for non-A parts), but 1.5KA8.2HE3/54 is specified in the datasheet as matching the 1.5KA8.2A electrical table, confirming its A-grade performance.
Can the 1.5KA8.2HE3/54 be used in bidirectional configurations?
No - the 1.5KA8.2HE3/54 is unidirectional only, as explicitly stated in the FEATURES section of Document 88300. It conducts in forward bias and clamps in reverse bias. For bidirectional protection, Vishay offers separate part numbers (e.g., 1.5KA8.2CA), which are structurally distinct and not interchangeable with the 1.5KA8.2HE3/54.
1.5KA8.2HE3/54 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):
- 6.63V
- Voltage - Breakdown (Min):
- 7.38V
- Voltage - Clamping (Max) @ Ipp:
- 12.5V
- Current - Peak Pulse (10/1000µs):
- 120A
- 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
1.5KA8.2HE3/54 FAQ
1.How can I place an order for 1.5KA8.2HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA8.2HE3/54 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 1.5KA8.2HE3/54 reliable?
The price and inventory of 1.5KA8.2HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA8.2HE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KA8.2HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA8.2HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA8.2HE3/54?
1.5KA8.2HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA8.2HE3/54 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 1.5KA8.2HE3/54?
For technical support, including 1.5KA8.2HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA8.2HE3/54 requirements.
6.How does Aetrix verify that 1.5KA8.2HE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KA8.2HE3/54 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 1.5KA8.2HE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KA8.2HE3/54?
All 1.5KA8.2HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA8.2HE3/54, 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 1.5KA8.2HE3/54 part is unused and in its original packaging.
Return procedure for 1.5KA8.2HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA8.2HE3/54 Tags
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