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Vishay General Semiconductor - Diodes Division 1.5KE24AHE3_B/C
- Part No.:
- 1.5KE24AHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE24AHE3_B/C.pdf
- Description:
- 1.5KW,24V 5%,UNIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,943
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Product details
Overview
1.5KE24AHE3_B/C from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary-side overvoltage protection in power rails and signal lines. It features a 22.8 V to 25.2 V breakdown voltage (VBR), 20.5 V standoff voltage (VWM), 33.2 V clamping voltage (VC) at 45.2 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 lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5KE24AHE3_B/C datasheet, 1.5KE24AHE3_B/C pinout, 1.5KE24AHE3_B/C application, or 1.5KE24AHE3_B/C equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJL = 15.4 °C/W), RoHS-compliant matte tin plating, and JEDEC-standard 1.5KE package dimensions - all critical for automotive-grade surge protection design-in and BOM validation.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when transient voltage exceeds VBR, it avalanches into low-impedance conduction within <1 ns, diverting surge current away from downstream components. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM).
The device supports repetitive surge events at 0.01% duty cycle, handles 200 A non-repetitive forward surge (8.3 ms half-sine), and maintains operation across –55 °C to +175 °C junction temperature range. Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15.4 °C/W, enabling reliable power dissipation on PCB traces without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.8 V / 25.2 V - defines precise avalanche initiation window for repeatable clamping onset |
| VWM | 20.5 V - maximum continuous reverse operating voltage before leakage rises above 1 µA |
| VC @ IPPM | 33.2 V at 45.2 A - clamping voltage during 10/1000 µs surge; limits stress on protected ICs |
| PPPM | 1500 W - peak transient power handling capability per single 1 ms pulse |
| IFSM | 200 A - withstands 8.3 ms half-sine surge without failure; critical for motor drive snubbing |
| TJ max | +175 °C - enables use in under-hood automotive environments and industrial power supplies |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance supports high-power pulse dissipation via PCB copper |
Pinout & Package
Package: JEDEC Case Style 1.5KE - molded epoxy body with matte tin-plated leads; meets UL 94 V-0 flammability rating and J-STD-002 solderability requirements. Dimensions: 5.3 mm × 5.3 mm × 9.5 mm (L × W × H), lead spacing 7.2 mm, lead diameter 1.07 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line; conducts avalanche current to ground reference during overvoltage |
| Anode | Reference return path | Typically tied to system ground or low-impedance return plane; completes clamping current loop |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance (±5%) and low long-term parameter drift under thermal cycling |
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| 1500 W peak pulse power | Protects against IEC 61000-4-5 Level 4 (4 kV surge) without derating in standard PCB layouts |
| Sub-nanosecond response time | Clamps transients before sensitive CMOS inputs reach destructive voltage thresholds |
| RoHS compliant & whisker-tested | HE3 suffix meets JESD 201 Class 2 whisker resistance - suitable for high-reliability industrial assemblies |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12 V battery rail in engine control modules exposed to load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between power input and local regulator IC. Use Value: Limits transient voltage to ≤33.2 V, preventing damage to 3.3 V/5 V microcontrollers and CAN transceivers. |
Use Scenario: Analog output line of pressure sensor in factory automation PLC I/O module. IC Role / Device Role / Timing Role: Point-of-entry protection on 4–20 mA current loop against ESD and cable discharge events. Use Value: Clamps 8/20 µs surges to safe levels while maintaining <1 µA leakage at 20.5 V, preserving signal accuracy. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Protection |
Use Scenario: AC-DC adapter primary-side DC bus subjected to mains-borne surges and capacitor discharge spikes. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of bulk capacitor and PFC controller. Use Value: Absorbs 1500 W pulses without degradation, enabling compact design vs. MOV-based solutions. |
Use Scenario: Ethernet PHY interface on telecom base station line card connected to outdoor cabling. IC Role / Device Role / Timing Role: Secondary-level protection cascaded after gas discharge tube (GDT) front-end. Use Value: Provides low-clamping secondary stage with fast response to residual transients escaping GDT turn-on delay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Lower peak power (600 W), smaller SMB package (3.5 mm × 4.6 mm), same VBR range (22.8–25.2 V) | Better suited for space-constrained consumer electronics; insufficient for 1.5 kV/0.5 J IEC 61000-4-5 testing | Select SMBJ24A only when board area is critical and surge energy is ≤0.5 J; verify clamping margin with actual waveforms. |
| 1.5KE24CA | Bidirectional variant (VBR = 22.8–25.2 V), symmetric clamping in both polarities, same 1500 W rating | Required for AC-coupled lines or full-bridge rectifier inputs where reverse polarity surges occur | Choose 1.5KE24CA only if bidirectional protection is mandated; unidirectional 1.5KE24AHE3_B/C offers lower cost and simpler layout for DC rails. |
Compared with SMBJ24A and 1.5KE24CA, the 1.5KE24AHE3_B/C delivers higher surge energy handling in a standardized through-hole package with proven AEC-Q101 qualification - making it optimal for automotive and industrial power rail protection where reliability and pulse robustness are prioritized over footprint size.
Availability
1.5KE24AHE3_B/C is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC analog I/O modules, and telecom line card surge protection requiring stable component supply, long-lifecycle assurance, and traceable sourcing.
Supply support for 1.5KE24AHE3_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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - delivering consistent clamping performance, AEC-Q101 qualification, and robust thermal behavior across extended temperature ranges.
FAQ
What is the breakdown voltage tolerance for 1.5KE24AHE3_B/C?
The 1.5KE24AHE3_B/C has a guaranteed breakdown voltage range of 22.8 V to 25.2 V at 1.0 mA test current, corresponding to a ±5% tolerance around the nominal 24 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes, critical for protecting 24 V-rated ICs without false triggering.
Is 1.5KE24AHE3_B/C qualified for automotive applications?
Yes, the 1.5KE24AHE3_B/C carries AEC-Q101 qualification (per note 2 on page 3 of document 88301), covering stress tests including HTGB, TCT, and surge endurance. Its HE3 suffix confirms compliance with JESD 201 Class 2 whisker resistance and RoHS standards - making it approved for use in engine control, body electronics, and ADAS subsystems.
What is the maximum clamping voltage of 1.5KE24AHE3_B/C under surge conditions?
The 1.5KE24AHE3_B/C clamps to a maximum of 33.2 V when subjected to its rated 45.2 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and represents the worst-case voltage seen by downstream components during a full-power transient event.
How does the thermal resistance of 1.5KE24AHE3_B/C affect PCB layout?
With RθJL = 15.4 °C/W and RθJA = 75 °C/W, the 1.5KE24AHE3_B/C relies primarily on conduction through its leads for heat removal. Layout best practice requires ≥250 mil wide copper pours connected directly to both leads - especially the cathode - to maintain junction temperature below 175 °C during repetitive surges.
Can 1.5KE24AHE3_B/C be used in bidirectional circuits?
No - the 1.5KE24AHE3_B/C is strictly unidirectional, indicated by the "A" suffix and cathode band marking. For bidirectional protection, the functionally matched part is 1.5KE24CA (with "CA" suffix), which provides symmetrical clamping in both polarities and shares identical VBR, VC, and PPPM ratings.
1.5KE24AHE3_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):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 47A
- 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
1.5KE24AHE3_B/C FAQ
1.How can I place an order for 1.5KE24AHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE24AHE3_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 1.5KE24AHE3_B/C reliable?
The price and inventory of 1.5KE24AHE3_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 1.5KE24AHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE24AHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE24AHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE24AHE3_B/C?
1.5KE24AHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE24AHE3_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 1.5KE24AHE3_B/C?
For technical support, including 1.5KE24AHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE24AHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE24AHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE24AHE3_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 1.5KE24AHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE24AHE3_B/C?
All 1.5KE24AHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE24AHE3_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 1.5KE24AHE3_B/C part is unused and in its original packaging.
Return procedure for 1.5KE24AHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE24AHE3_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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Diodes Incorporated
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Diodes Incorporated
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onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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