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Vishay General Semiconductor - Diodes Division 5KP24AHE3/51
- Part No.:
- 5KP24AHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP24AHE3/51.pdf
- Description:
- TVS DIODE 24VWM 38.9VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:9,903
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Product details
Overview
5KP24AHE3/51 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in P600 package, designed for high-energy surge protection of DC power rails and signal lines. It features 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR) at 5.0 mA, 38.9 V clamping voltage (VC) at 129 A peak pulse current (IPPM), and 5000 W peak pulse power (10/1000 μs). It is AEC-Q101 qualified and used to protect automotive power supplies and industrial sensor interfaces against inductive switching transients.
For engineers reviewing the 5KP24AHE3/51 datasheet, 5KP24AHE3/51 pinout, 5KP24AHE3/51 application, or 5KP24AHE3/51 equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, unidirectional polarity compatibility with DC bias, thermal derating above 25 °C, and AEC-Q101 qualification for automotive under-hood deployment.
Technical Context
This TVS diode operates as a voltage-clamped crowbar element during overvoltage events - it remains non-conductive below VWM = 24 V, initiates avalanche conduction at VBR = 26.7–29.5 V, and limits transient voltage to VC ≤ 38.9 V at IPPM = 129 A. Its P600 glass-passivated junction enables low incremental surge resistance and fast response time (<1 ns).
The device is rated for 5000 W peak pulse power (10/1000 μs), 8.0 W steady-state power dissipation on infinite heatsink at TL = 75 °C, and 600 A non-repetitive forward surge current (8.3 ms half-sine). Its -55 °C to +175 °C operating junction temperature range supports under-hood automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - maximum continuous reverse working voltage before leakage exceeds 2 μA; defines upper limit of normal DC rail operation |
| VBR (min/max) | 26.7 V / 29.5 V at 5.0 mA - guaranteed avalanche initiation window; ensures predictable turn-on across temperature and unit variation |
| VC @ IPPM | 38.9 V at 129 A - clamped voltage during 10/1000 μs surge; must be below protected IC's absolute maximum rating |
| PPPM | 5000 W - peak transient energy handling capacity; determines survivability against ISO 7637-2 Pulse 1/2/5a/b surges |
| TJ max. | +175 °C - maximum junction temperature; enables placement near heat sources in automotive ECUs |
| Polarity | Unidirectional - cathode-banded configuration; suitable only for DC-biased lines with defined polarity |
| AEC-Q101 | Qualified - validated for automotive reliability including HTOL, TC, UHAST, and ESD per AEC standard |
Pinout & Package
5KP24AHE3/51 uses the axial-lead P600 package: molded epoxy body with matte tin-plated leads, UL 94 V-0 rated, 0.340–0.360 inch (8.6–9.1 mm) body diameter, 0.375 inch (9.5 mm) length, and color band denoting cathode terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (banded end) | Cathode | Connected to system ground or lower-potential node; reverse-biased during normal operation |
| Other lead | Anode | Connected to protected line (e.g., 24 V supply rail); conducts surge current to ground when clamping |
Key Features
| Feature | Design Value |
|---|---|
| 5000 W peak pulse power (10/1000 μs) | Enables single-device protection against severe automotive load-dump transients without parallel stacking |
| AEC-Q101 qualification | Validates long-term reliability in automotive environments including thermal cycling, humidity, and vibration stress |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage stress on downstream components while maintaining robust surge margin |
| 175 °C max junction temperature | Supports mounting on hot PCB areas (e.g., near power MOSFETs or DC/DC converters) without thermal derating penalty |
| RoHS-compliant HE3 suffix | Indicates AEC-Q101 qualification and JESD 201 Class 2 whisker resistance - required for automotive production |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs of engine control units (ECUs) and body control modules (BCMs) against ISO 7637-2 load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Voltage-clamping transient suppressor placed between 24 V rail and chassis ground, responding within <1 ns to limit overvoltage. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN transceivers by clamping transients to ≤38.9 V - well below 40 V absolute maximum ratings. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) of pressure/temperature sensors in factory automation systems exposed to relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional TVS connected across sensor output and return, absorbing repetitive 600 V/10 A inductive spikes. Use Value: Maintains signal integrity by limiting transient overshoot to <39 V, avoiding ADC saturation and enabling uninterrupted process monitoring. |
| Telecom DC Power Input Protection | Switching Power Supply Output Clamping |
Use Scenario: Securing -48 V DC input ports of telecom base station equipment against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Cathode-to-ground configuration on negative rail, conducting surge current into earth reference during positive transients. Use Value: Withstands 5000 W pulses without degradation, eliminating need for external crowbar circuits and reducing BOM count. |
Use Scenario: Replacing SCR-based crowbar circuits on 24 V outputs of industrial AC/DC power supplies to prevent overvoltage damage during regulation failure. IC Role / Device Role / Timing Role: Fast-acting voltage limiter that clamps output to safe level until upstream breaker trips (within 10–100 ms). Use Value: Enables system reset after fault clearance - unlike sacrificial fuses or SCRs requiring replacement or retriggering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24AHE3/52 | Lower peak power (600 W), smaller SMB package, same VWM/VBR/VC specs | Not suitable for load-dump-level surges; limited to board-level ESD and minor inductive spikes | Select when space-constrained and surge energy is ≤600 W - not a drop-in replacement for 5KP24AHE3/51 |
| 1.5KE24A | Same VWM/VBR/VC, but 1500 W peak power (10/1000 μs), DO-201 package, no AEC-Q101 qualification | Lacks automotive qualification and cannot handle full ISO 7637-2 Pulse 5a (1000 W minimum) | Acceptable for commercial/industrial use where AEC-Q101 and 5000 W are not required |
Compared with SMBJ24AHE3/52 and 1.5KE24A, the 5KP24AHE3/51 delivers 3.3× higher surge power than SMBJ24AHE3/52 and 3.3× higher than 1.5KE24A - making it uniquely suited for automotive load-dump and industrial heavy-inductive protection where sustained energy absorption is critical.
Availability
5KP24AHE3/51 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power inputs requiring stable component supply with AEC-Q101 compliance and high-energy surge resilience.
Supply support for 5KP24AHE3/51 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, TVS devices, and optoelectronics with emphasis on reliability and automotive-grade performance.
The 5KP series was engineered specifically for high-power transient suppression in automotive and industrial power systems - delivering robust 5000 W surge handling in a standardized P600 package with AEC-Q101 validation.
FAQ
What is the clamping voltage of the 5KP24AHE3/51 under maximum rated surge current?
The 5KP24AHE3/51 has a maximum clamping voltage (VC) of 38.9 V when subjected to its rated peak pulse current (IPPM) of 129 A using a 10/1000 μs waveform. This value is measured per JEDEC test conditions and guarantees that protected circuitry will not experience voltages exceeding 38.9 V during such transients - a critical parameter for ensuring compatibility with 40 V-tolerant ICs. The 5KP24AHE3/51 maintains this clamping performance across its full operating temperature range.
Is the 5KP24AHE3/51 suitable for bidirectional transient protection?
No, the 5KP24AHE3/51 is a unidirectional TVS diode, indicated by its "A" suffix and single cathode band. It conducts only during reverse-biased overvoltage events and must be installed with correct polarity - anode to the protected line, cathode to ground. For AC or bipolar signal lines, a bidirectional variant like 5KP24CAHE3/51 would be required. Using the 5KP24AHE3/51 on AC signals risks forward conduction and potential failure.
Does the 5KP24AHE3/51 require a heatsink for continuous power dissipation?
The 5KP24AHE3/51 is rated for 8.0 W steady-state power dissipation only when mounted on an infinite heatsink at lead temperature (TL) of 75 °C - a condition rarely met in practice. In typical PCB mounting, its DC power handling is limited to ~1.5 W due to thermal resistance. It is intended for transient (not continuous) suppression; sustained power dissipation should be avoided. The 5KP24AHE3/51 relies on short-duration pulse capability, not steady-state thermal design.
How does the HE3 suffix differ from the E3 suffix in 5KP24AHE3/51?
The HE3 suffix in 5KP24AHE3/51 denotes RoHS compliance plus AEC-Q101 qualification and JESD 201 Class 2 whisker resistance - mandatory for automotive production. In contrast, the E3 suffix (e.g., 5KP24A-E3/51) indicates RoHS compliance only, without automotive qualification. Both share identical electrical specs, but only the HE3 version is approved for under-hood ECU applications per IATF 16949 requirements. The 5KP24AHE3/51 meets full AEC-Q101 stress testing including HTOL and temperature cycling.
Can the 5KP24AHE3/51 replace a 5KP24A-E3/51 in an existing design?
Yes - the 5KP24AHE3/51 is a direct functional and mechanical replacement for 5KP24A-E3/51, sharing identical VWM, VBR, VC, PPPM, package dimensions, and pinout. The only enhancement is AEC-Q101 qualification and improved whisker resistance (Class 2 vs. Class 1A), making the 5KP24AHE3/51 suitable for automotive use where the E3 version is restricted to commercial applications. No PCB or schematic changes are needed to upgrade to the 5KP24AHE3/51.
5KP24AHE3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- P600, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 129A
- Power - Peak Pulse:
- 5000W (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:
- P600
5KP24AHE3/51 FAQ
1.How can I place an order for 5KP24AHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP24AHE3/51 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 5KP24AHE3/51 reliable?
The price and inventory of 5KP24AHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP24AHE3/51 is usually 5 days.
3.What payment methods are accepted for 5KP24AHE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP24AHE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP24AHE3/51?
5KP24AHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP24AHE3/51 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 5KP24AHE3/51?
For technical support, including 5KP24AHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP24AHE3/51 requirements.
6.How does Aetrix verify that 5KP24AHE3/51 is sourced from the original manufacturer or authorized distributors?
All 5KP24AHE3/51 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 5KP24AHE3/51 meets industry standards.
7.What is the process for return or replacement of 5KP24AHE3/51?
All 5KP24AHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP24AHE3/51, 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 5KP24AHE3/51 part is unused and in its original packaging.
Return procedure for 5KP24AHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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