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Vishay General Semiconductor - Diodes Division 1.5KA30HE3/54
- Part No.:
- 1.5KA30HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA30HE3/54.pdf
- Description:
- TVS DIODE 24.3VWM 43.5VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:5,537
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Product details
Overview
1.5KA30HE3/54 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 ≤43.5 V under 34.5 A surge current, and operates up to +185 °C junction temperature - enabling robust protection of MOSFETs and sensor signal lines in automotive powertrain and body control modules.
For engineers reviewing the 1.5KA30HE3/54 datasheet, 1.5KA30HE3/54 pinout, 1.5KA30HE3/54 application, or 1.5KA30HE3/54 equivalent, key selection criteria include its AEC-Q101 qualification, 24.3 V stand-off voltage, low 0.097 %/°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 low incremental surge resistance ensure fast response (<1 ns) and minimal voltage overshoot during 10/1000 µs surges.
Rated for 200 A non-repetitive forward surge (8.3 ms half-sine), it maintains reliable performance across -65 °C to +185 °C operating range and meets UL 94 V-0 flammability requirements via molded epoxy encapsulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains high-energy load dump and ISO 7637-2 transient events without failure |
| Stand-off Voltage (VWM) | 24.3 V - blocks normal system voltage while allowing conduction above breakdown threshold |
| Clamping Voltage (VC @ IPPM) | 43.5 V max at 34.5 A - limits downstream voltage stress on protected ICs and MOSFETs |
| Breakdown Voltage (VBR) | 27.0–33.0 V at 1 mA - defines precise turn-on threshold for predictable protection timing |
| Operating Temperature Range | -65 °C to +185 °C - supports under-hood automotive placement without derating |
| AEC-Q101 Qualified | Yes - validated for automotive reliability including temperature cycling, HTRB, and ESD |
| RoHS & Whisker Compliance | HE3 suffix: RoHS-compliant, JESD201 Class 2 tin whisker resistant |
Pinout & Package
Case Style 1.5KA: axial-leaded DO-201AD package with matte tin-plated leads. Cathode denoted by color band; leads solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to ground or low-side reference | Provides low-impedance path to ground during reverse transient clamping |
| Cathode | Current exit point in forward bias; connected to protected line | Receives transient energy from signal/power line and routes it to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable VBR and low dynamic impedance across temperature and lifetime |
| 1500 W peak pulse power | Withstands severe ISO 16750-2 and ISO 7637-2 test pulses without degradation |
| AEC-Q101 qualification | Validated for automotive under-hood use including HTGB, TCT, and uHAST |
| UL 94 V-0 molding compound | Prevents flame propagation in enclosed engine bay or battery management enclosures |
| JESD201 Class 2 whisker resistance | Eliminates tin whisker growth risk in long-life automotive electronics (>15 years) |
Applications
| Automotive Powertrain Control | Industrial Motor Drive Protection |
|---|---|
Use Scenario: Protecting MCU I/O and gate drivers from load dump and alternator ripple in engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12 V rail and ground to clamp transients before they reach sensitive logic. Use Value: Clamping at 43.5 V ensures MOSFETs with 45 V VDSS remain within safe SOA during 12 V system surges. | Use Scenario: Safeguarding encoder feedback lines and Hall-effect sensors in variable-frequency drives. IC Role / Device Role / Timing Role: Bidirectional protection not required; unidirectional 1.5KA30HE3/54 guards against negative-going spikes induced by inductive kickback. Use Value: 24.3 V VWM allows uninterrupted operation during 24 V nominal bus fluctuations while suppressing >33 V spikes. |
| Telecom Base Station Power Input | EV Battery Management Signal Lines |
Use Scenario: Shielding DC-DC converter inputs from lightning-induced surges on outdoor telecom power feeds. IC Role / Device Role / Timing Role: Primary surge suppression stage upstream of input filter and regulator ICs. Use Value: 1500 W rating handles 10/1000 µs surges per IEC 61000-4-5 Level 4 without thermal runaway. | Use Scenario: Protecting isolated CAN and voltage-sense traces connecting BMS controllers to cell stacks. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF) placed at connector interface to shunt ESD and switching noise. Use Value: 0.097 %/°C VBR tempco ensures consistent clamping across -40 °C to +85 °C battery pack operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A-E3/52 (Vishay) | Lower PPPM (600 W), smaller SMB package, 33 V VBR, AEC-Q101 qualified | Better suited for space-constrained PCBs with lower surge exposure | Select when board area is limited and peak surge energy is ≤600 W |
| 1.5KE33A (ON Semiconductor) | Same 1500 W rating but TO-204AA (DO-41) package, no AEC-Q101 qualification, higher VC (53.3 V) | Acceptable for industrial/commercial use where automotive qualification is not mandated | Choose for cost-sensitive non-automotive designs requiring identical power handling |
Compared with SMBJ33A-E3/52 and 1.5KE33A, the 1.5KA30HE3/54 provides superior thermal robustness (185 °C TJ), tighter VBR tolerance (±10 %), and verified AEC-Q101 compliance - making it the preferred choice for mission-critical automotive power protection where long-term reliability under thermal stress is mandatory.
Availability
1.5KA30HE3/54 is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive protection, and EV battery management systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 1.5KA30HE3/54 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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The 1.5KA series is engineered specifically for high-temperature, high-reliability transient suppression in automotive and industrial environments - delivering stable clamping performance under sustained thermal stress and repetitive surge conditions.
FAQ
What is the maximum clamping voltage of the 1.5KA30HE3/54 under rated surge current?
The 1.5KA30HE3/54 has a maximum clamping voltage (VC) of 43.5 V when subjected to its rated peak pulse current (IPPM) of 34.5 A using the standard 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and ensures protected components remain within safe voltage limits during transients.
Is the 1.5KA30HE3/54 qualified for automotive applications?
Yes, the 1.5KA30HE3/54 is AEC-Q101 qualified and designated as automotive grade (HE3 suffix). It undergoes rigorous stress testing including high-temperature reverse bias, temperature cycling, and unbiased highly accelerated stress testing to meet automotive reliability standards for under-hood deployment.
What does the HE3 suffix indicate on the 1.5KA30HE3/54?
The HE3 suffix on the 1.5KA30HE3/54 denotes RoHS compliance, high-reliability construction, and qualification to JESD201 Class 2 for tin whisker resistance. It also confirms AEC-Q101 qualification and use of matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards.
What is the standoff voltage (VWM) of the 1.5KA30HE3/54, and why does it matter?
The 1.5KA30HE3/54 has a standoff voltage (VWM) of 24.3 V, meaning it remains non-conductive below this voltage. This parameter ensures reliable blocking of normal 24 V system operation while triggering conduction only during overvoltage events - preventing false triggering and leakage-related power loss in always-on automotive circuits.
Can the 1.5KA30HE3/54 be used in place of a bidirectional TVS diode?
No, the 1.5KA30HE3/54 is unidirectional only, as explicitly stated in its Vishay datasheet. It protects against positive transients relative to ground and must be oriented with cathode toward the protected line. For bidirectional protection (e.g., AC lines or data buses), a dedicated bidirectional device such as SMAJ28A must be selected instead of the 1.5KA30HE3/54.
1.5KA30HE3/54 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):
- 24.3V
- Voltage - Breakdown (Min):
- 27V
- Voltage - Clamping (Max) @ Ipp:
- 43.5V
- Current - Peak Pulse (10/1000µs):
- 34.5A
- 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
1.5KA30HE3/54 FAQ
1.How can I place an order for 1.5KA30HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA30HE3/54 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 1.5KA30HE3/54 reliable?
The price and inventory of 1.5KA30HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA30HE3/54 is usually 5 days.
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Once your 1.5KA30HE3/54 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 1.5KA30HE3/54?
For technical support, including 1.5KA30HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA30HE3/54 requirements.
6.How does Aetrix verify that 1.5KA30HE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KA30HE3/54 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 1.5KA30HE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KA30HE3/54?
All 1.5KA30HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA30HE3/54, 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 1.5KA30HE3/54 part is unused and in its original packaging.
Return procedure for 1.5KA30HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA30HE3/54 Tags
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