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Vishay General Semiconductor - Diodes Division 1.5KE30HE3/73
- Part No.:
- 1.5KE30HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE30HE3/73.pdf
- Description:
- TVS DIODE 24.3VWM 43.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:6,167
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Product details
Overview
1.5KE30HE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in power rails and signal lines. It features a 30 V breakdown voltage (VBR = 28.5–31.5 V at 1.0 mA), 41.4 V clamping voltage (VC) at 36.2 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces against inductive switching transients and lightning-induced surges.
For engineers reviewing the 1.5KE30HE3/73 datasheet, 1.5KE30HE3/73 pinout, 1.5KE30HE3/73 application, or 1.5KE30HE3/73 equivalent, this part delivers AEC-Q101 qualification, RoHS-compliant matte tin-plated leads, JESD 201 Class 2 whisker resistance, and UL 94 V-0 molded epoxy packaging - critical for automotive, industrial, and telecom surge protection design validation.
Technical Context
This unidirectional TVS diode operates by avalanche breakdown to clamp transient voltages above its standoff voltage (VWM = 25.6 V) while maintaining low leakage (<1.0 µA). Its glass-passivated junction ensures stable VBR tolerance (±5%) and fast response time (~1 ns), enabling effective suppression of ESD, load dump, and inductive kick events before sensitive downstream components are stressed.
The device's thermal design supports operation from –55 °C to +175 °C junction temperature, with RθJA = 75 °C/W and RθJL = 15.4 °C/W, allowing reliable performance under high ambient conditions when mounted on PCBs with adequate copper pour or lead heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 28.5 V / 31.5 V at 1.0 mA - defines precise avalanche onset threshold for predictable clamping activation |
| VWM | 25.6 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 41.4 V at 36.2 A - clamped voltage during 1500 W transient, limiting stress on protected circuitry |
| PPPM | 1500 W - peak pulse power handling with 10/1000 µs waveform, suitable for severe industrial surges |
| IFSM | 200 A - surge current rating for 8.3 ms half-sine wave, supporting load-dump immunity |
| TJ max | +175 °C - extended junction temperature enables use in under-hood automotive and high-temp industrial environments |
| Leakage @ VWM | <1.0 µA - minimal standby power loss and negligible impact on high-impedance sensor bias networks |
Pinout & Package
Package: Case Style 1.5KE - axial-leaded, molded epoxy body (UL 94 V-0), 0.375" (9.5 mm) lead length, 0.210" (5.3 mm) body diameter. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path); conducts during forward surge events |
| Cathode | Avalanche clamping terminal | Marked with color band; connected to protected line (e.g., 24 V rail or signal input) to shunt transients to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring reliability under thermal cycling and vibration |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift in harsh environments |
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV) surge testing without degradation when properly mounted |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth under thermal stress, eliminating latent short-circuit risk in long-life deployments |
| UL 94 V-0 flammability rating | Mold compound self-extinguishes if exposed to flame, meeting safety requirements for enclosed industrial equipment |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines in vehicle ECUs from ISO 7637-2 load dump transients up to 120 V. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC converter input to clamp surges within 1 ns. Use Value: Limits peak voltage to 41.4 V, preventing damage to 36 V-rated regulators and ensuring system reset-free operation. | Use Scenario: Shielding analog inputs of PLC I/O modules from field-wiring induced transients in factory automation. IC Role / Device Role / Timing Role: TVS installed at connector entry point to divert surge energy before reaching precision op-amps and ADC front-ends. Use Value: Sub-1 ns response preserves signal integrity; low 1.0 µA leakage avoids offset errors in µA-level sensor current loops. |
| Telecom Line Surge Protection | Consumer Power Adapter Input Protection |
Use Scenario: Safeguarding PoE-powered Ethernet switches against lightning-induced surges on data lines. IC Role / Device Role / Timing Role: Paired with common-mode chokes and bidirectional TVS arrays; 1.5KE30HE3/73 protects DC bias rails. Use Value: Withstands repetitive 1500 W pulses per IEC 61000-4-5, extending field service life beyond 10 years. | Use Scenario: Overvoltage hardening of AC-DC adapter primary-side rectifier outputs in smart home hubs. IC Role / Device Role / Timing Role: Placed across bulk capacitor to absorb turn-off spikes from mains-switching transistors. Use Value: Clamps 200 A 8.3 ms surges without parametric shift, maintaining compliance with UL 62368-1 transient immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30AHE3/52 | Lower 600 W PPPM, SMC package (smaller footprint), same VBR range (28.5–31.5 V) | Better suited for space-constrained PCBs; reduced surge margin for severe industrial environments | Select when board area is critical and surge threat level is ≤ IEC 61000-4-5 Level 3 |
| 1.5KE30A-E3/54 | Same electrical specs but commercial-grade (non-AEC-Q101), E3 suffix only (JESD 201 Class 1A whisker test) | Lacks automotive qualification; acceptable for industrial/commercial power supplies where AEC-Q101 is not mandated | Choose for cost-sensitive non-automotive designs requiring identical clamping performance |
Compared with 1.5KE30HE3/73, SMBJ30AHE3/52 trades 1500 W surge capacity for compactness, while 1.5KE30A-E3/54 retains full electrical equivalence but omits AEC-Q101 validation - making the HE3/73 uniquely suitable for automotive-grade robustness without layout or schematic changes.
Availability
1.5KE30HE3/73 is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, telecom infrastructure, and consumer power adapters requiring stable component supply and long-term lifecycle assurance.
Supply support for 1.5KE30HE3/73 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 diodes, rectifiers, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The 1.5KE series was engineered for high-energy transient suppression in demanding environments - delivering consistent clamping performance across temperature, lifetime, and surge repetition rates in automotive, industrial, and telecom systems.
FAQ
What is the breakdown voltage tolerance of the 1.5KE30HE3/73?
The 1.5KE30HE3/73 has a specified breakdown voltage (VBR) range of 28.5 V to 31.5 V at 1.0 mA test current, representing a ±5% tolerance. This tight specification ensures consistent clamping behavior across production lots and supports reliable design margins in safety-critical applications such as automotive power distribution. The 1.5KE30HE3/73 achieves this via glass-passivated junction processing and 100% VBR screening per Vishay's 88301 specification.
Does the 1.5KE30HE3/73 meet automotive qualification standards?
Yes, the 1.5KE30HE3/73 is AEC-Q101 qualified per Vishay documentation (Document 88301, Note 2), covering the 1.5KE6.8AHE3_B to 1.5KE220AHE3_B family. This qualification includes stress tests for temperature cycling, humidity, mechanical shock, and high-temperature operating life - confirming suitability for under-hood and chassis-mounted automotive electronics. The 1.5KE30HE3/73 carries the HE3 suffix denoting both RoHS compliance and AEC-Q101 validation.
What is the maximum clamping voltage of the 1.5KE30HE3/73 during a surge event?
The 1.5KE30HE3/73 exhibits a maximum clamping voltage (VC) of 41.4 V at its rated peak pulse current (IPPM) of 36.2 A, measured using the standard 10/1000 µs waveform. This value represents the upper limit of voltage seen by protected circuitry during worst-case transient events and is critical for ensuring downstream components - such as 36 V-rated DC-DC controllers - remain within safe operating limits. The 1.5KE30HE3/73 maintains this clamping performance across its full operating temperature range.
How does the 1.5KE30HE3/73 differ from the 1.5KE30A-E3/54 variant?
The 1.5KE30HE3/73 and 1.5KE30A-E3/54 share identical electrical parameters (VBR, VC, PPPM, etc.) but differ in qualification and plating: the HE3/73 is AEC-Q101 qualified and meets JESD 201 Class 2 whisker resistance, whereas the E3/54 is commercial-grade with Class 1A whisker testing. Both use RoHS-compliant matte tin leads and UL 94 V-0 molding, but only the 1.5KE30HE3/73 is approved for automotive use per manufacturer documentation.
Can the 1.5KE30HE3/73 be used in bidirectional configurations?
No, the 1.5KE30HE3/73 is a unidirectional TVS diode, indicated by the absence of "C" in its part number (e.g., 1.5KE30CA would be bidirectional). Its cathode band denotes polarity, and it conducts only in reverse breakdown - making it unsuitable for AC line or differential signal protection without external circuitry. For bidirectional protection at ~30 V, engineers must select a part like 1.5KE30CAHE3/B, which is explicitly rated for symmetrical clamping in both directions.
1.5KE30HE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- 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:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE30HE3/73 FAQ
1.How can I place an order for 1.5KE30HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE30HE3/73 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 1.5KE30HE3/73 reliable?
The price and inventory of 1.5KE30HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE30HE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE30HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE30HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE30HE3/73?
1.5KE30HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE30HE3/73 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 1.5KE30HE3/73?
For technical support, including 1.5KE30HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE30HE3/73 requirements.
6.How does Aetrix verify that 1.5KE30HE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE30HE3/73 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 1.5KE30HE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE30HE3/73?
All 1.5KE30HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE30HE3/73, 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 1.5KE30HE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE30HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE30HE3/73 Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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