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Vishay General Semiconductor - Diodes Division 1.5KE30AHE3_B/C
- Part No.:
- 1.5KE30AHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE30AHE3_B/C.pdf
- Description:
- 1.5KW,30V 5%,UNIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,374
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Product details
Overview
1.5KE30AHE3_B/C from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC 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 maximum clamping voltage (VC) at 36.2 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and operates across –55 °C to +175 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5KE30AHE3_B/C datasheet, 1.5KE30AHE3_B/C pinout, 1.5KE30AHE3_B/C application, or 1.5KE30AHE3_B/C equivalent, this part delivers verified AEC-Q101 qualification (per note 2), RoHS-compliant matte tin-plated leads, JESD 201 Class 2 whisker resistance, and UL 94 V-0 molded epoxy packaging - critical for automotive and industrial reliability validation.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction to achieve sub-nanosecond response time (<1 ns) and low incremental surge resistance. Its clamping behavior is defined by a 10/1000 µs waveform test condition, with thermal derating governed by RθJA = 75 °C/W and RθJL = 15.4 °C/W.
It supports 200 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), exhibits 25.6 V stand-off voltage (VWM), and maintains ≤1.0 µA reverse leakage at VWM. The device is rated for 6.5 W steady-state power dissipation on an infinite heatsink at TL = 75 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 28.5 V / 31.5 V at IT = 1.0 mA - defines precise voltage threshold where avalanche conduction begins reliably |
| VWM | 25.6 V - maximum continuous reverse operating voltage before significant leakage occurs |
| VC @ IPPM | 41.4 V at 36.2 A - clamped voltage seen by protected circuit during worst-case 1500 W transient |
| PPPM | 1500 W (10/1000 µs) - peak surge energy absorption capacity without failure |
| IFSM | 200 A (8.3 ms half-sine) - surge current handling for short-duration inductive kick events |
| TJ range | –55 °C to +175 °C - enables deployment in under-hood automotive and industrial ambient environments |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with 0.375" lead length, UL 94 V-0 compliant molding |
Pinout & Package
1.5KE30AHE3_B/C is housed in a DO-201AD (Case Style 1.5KE) axial-leaded package with cathode indicated by a color band. Leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102. Package dimensions conform to JEDEC outline: body diameter 0.210–0.285", lead diameter 0.038–0.042", overall length ≥1.0".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side reference | Connected to ground or lower-potential rail in unidirectional clamp configuration |
| Cathode | Avalanche conduction terminal / high-side connection | Connected to protected line; color band identifies this terminal for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTGB, HTRB, and temperature cycling |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth under thermal/humidity bias, critical for long-life automotive modules |
| UL 94 V-0 flammability rating | Mold compound self-extinguishes within 10 seconds after flame removal - meets safety-critical enclosure requirements |
| 1500 W peak pulse power | Provides robust protection against IEC 61000-4-5 Level 4 (4 kV surge) without external series impedance |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 30 V. Use Value: Limits voltage excursion to ≤41.4 V during 36.2 A transients, preventing damage to 36 V-rated regulators and CAN transceivers. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: TVS connected across sensor output and ground to absorb ESD and cable discharge events. Use Value: Sub-ns response ensures clamping before sensitive op-amps or ADC inputs experience overvoltage stress. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Stage |
Use Scenario: Front-end protection on Ethernet PHY power supplies exposed to induced lightning surges. IC Role / Device Role / Timing Role: Primary TVS on 48 V PoE input rail, upstream of DC-DC converter. Use Value: Withstands 1500 W pulses per IEC 61000-4-5, enabling compliance with EN 61000-4-5 Level 4 without cascaded stages. |
Use Scenario: Overvoltage suppression on AC-DC adapter secondary side feeding USB-C PD controllers. IC Role / Device Role / Timing Role: Clamp diode across 20 V output rail to suppress transformer ringing and rectifier reverse recovery spikes. Use Value: 25.6 V stand-off allows normal operation while clamping fast edges to 41.4 V, preserving downstream FET gate integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A-E3/52 | DO-214AA package (SMB), 30 V VBR, 48.4 V VC @ 31.3 A, 600 W PPPM | Lower peak power and higher clamping voltage; suited for space-constrained PCBs where 1500 W is not required | Select when board area is limited and surge threat level is ≤IEC 61000-4-5 Level 3; verify thermal relief for SMB footprint |
| 1.5KE30CAHE3_B/C | Bidirectional variant, same VBR/VC specs, symmetric clamping in both polarities | Required for AC-coupled or floating signal lines where polarity reversal may occur (e.g., RS-485, audio) | Choose only if bidirectional protection is mandated; unidirectional 1.5KE30AHE3_B/C offers lower cost and simpler layout for DC rails |
Compared with SMBJ30A-E3/52, 1.5KE30AHE3_B/C delivers 2.5× higher peak power and 7 V lower clamping, making it suitable for harsher surge environments; versus 1.5KE30CAHE3_B/C, it provides optimized unidirectional performance with no compromise on VBR tolerance or thermal capability.
Availability
1.5KE30AHE3_B/C is available at Aetrix Electronics and suitable for automotive control units, industrial sensor nodes, telecom line cards, and consumer power adapters requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE30AHE3_B/C 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 and automotive-grade qualification.
The 1.5KE family was engineered for high-energy transient suppression in demanding environments, targeting applications where sustained surge immunity and AEC-Q101 validation are mandatory - especially in vehicle electrification and industrial automation.
FAQ
What is the breakdown voltage tolerance for 1.5KE30AHE3_B/C?
The 1.5KE30AHE3_B/C has a guaranteed breakdown voltage range of 28.5 V to 31.5 V at a test current of 1.0 mA, corresponding to ±10 % tolerance around the nominal 30 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes from –55 °C to +175 °C.
Is 1.5KE30AHE3_B/C qualified for automotive use?
Yes, 1.5KE30AHE3_B/C is AEC-Q101 qualified per note (2) in the Vishay datasheet (Document Number 88301), covering the full 1.5KE6.8AHE3_B to 1.5KE220AHE3_B series. This qualification includes HTGB, HTRB, temperature cycling, and mechanical shock testing - confirming suitability for under-hood and body-control module applications.
What is the maximum clamping voltage of 1.5KE30AHE3_B/C under surge conditions?
The maximum clamping voltage (VC) of 1.5KE30AHE3_B/C is 41.4 V, measured at its rated peak pulse current of 36.2 A using the standard 10/1000 µs waveform. This value represents the highest voltage the protected circuit will experience during a full 1500 W transient event.
Does 1.5KE30AHE3_B/C have RoHS and lead-free compliance?
Yes, the "E3" suffix in 1.5KE30AHE3_B/C denotes full RoHS compliance per EU Directive 2011/65/EU, with matte tin-plated leads and lead-free solder compatibility. The "HE3" prefix further confirms JESD 201 Class 2 whisker resistance, meeting stringent automotive reliability standards.
How does the thermal resistance of 1.5KE30AHE3_B/C affect PCB layout?
With a typical junction-to-lead thermal resistance (RθJL) of 15.4 °C/W and junction-to-ambient (RθJA) of 75 °C/W, 1.5KE30AHE3_B/C requires adequate copper pour on both leads - especially the cathode - to maintain TJ ≤175 °C during repetitive surges. Minimum 0.375" (9.5 mm) lead length must be maintained per JEDEC outline for thermal performance.
1.5KE30AHE3_B/C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 38A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE30AHE3_B/C FAQ
1.How can I place an order for 1.5KE30AHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE30AHE3_B/C 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 1.5KE30AHE3_B/C reliable?
The price and inventory of 1.5KE30AHE3_B/C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE30AHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE30AHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE30AHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE30AHE3_B/C?
1.5KE30AHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE30AHE3_B/C 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 1.5KE30AHE3_B/C?
For technical support, including 1.5KE30AHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE30AHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE30AHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE30AHE3_B/C 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 1.5KE30AHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE30AHE3_B/C?
All 1.5KE30AHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE30AHE3_B/C, 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 1.5KE30AHE3_B/C part is unused and in its original packaging.
Return procedure for 1.5KE30AHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE30AHE3_B/C Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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