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Vishay General Semiconductor - Diodes Division 5KP51AHE3_A/C
- Part No.:
- 5KP51AHE3_A/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP51AHE3_A/C.pdf
- Description:
- TVS DIODE
- Quantity:
- Payment:
- Shipping:
Inventory:8,518
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Product details
Overview
5KP51AHE3_A/C from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in P600 package, designed for high-energy surge protection on power rails and signal lines. It features 51 V stand-off voltage (VWM), 56.7–62.7 V breakdown voltage (VBR) at 5 mA, 82.4 V clamping voltage at 60.7 A peak pulse current, and 5000 W peak pulse power rating with 10/1000 μs waveform.
For engineers reviewing the 5KP51AHE3_A/C datasheet, 5KP51AHE3_A/C pinout, 5KP51AHE3_A/C application, or 5KP51AHE3_A/C equivalent, this device is selected for automotive-grade overvoltage protection where AEC-Q101 qualification, low clamping ratio, and robust 500 A IFSM surge capability are critical design requirements.
Technical Context
The 5KP51AHE3_A/C employs a glass-passivated P600 chip junction optimized for fast response (<1 ns) to transient events such as ESD, lightning-induced surges, and inductive switching spikes. Its unidirectional polarity enables DC rail protection without reverse conduction during normal operation.
It operates across -55 °C to +175 °C junction temperature range and delivers stable clamping performance under repetitive 0.01% duty cycle pulses. The device meets JESD22-B106 solderability standards and is qualified to AEC-Q101 for automotive under-hood and powertrain applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 51 V - Maximum continuous reverse voltage before clamping begins; sets operating margin above nominal 48 V or 50 V DC bus. |
| VBR (Breakdown Voltage) | 56.7–62.7 V at 5 mA - Confirmed breakdown threshold ensures reliable turn-on during transients exceeding system tolerance. |
| VC (Clamping Voltage) | 82.4 V at 60.7 A - Limits downstream voltage stress during 5000 W surge; clamping ratio = VC/VWM ≈ 1.62. |
| PPPM (Peak Pulse Power) | 5000 W - Sustains 10/1000 μs waveform energy without failure; suitable for ISO 7637-2 Pulse 5a/b and IEC 61000-4-5 Level 4. |
| IFSM (Surge Current) | 500 A - Withstands 8.3 ms half-sine surge per JEDEC, enabling fuse/breaker coordination in power supply output protection. |
| TJ max. | 175 °C - Enables use in high-temperature automotive environments including engine control units and battery management systems. |
| Polarity | Unidirectional - Protects positive-rail circuits only; cathode marked by band; not suitable for AC or bidirectional line protection. |
Pinout & Package
Package: P600 molded epoxy case with matte tin-plated leads; UL 94 V-0 rated; 9.5 mm body length; lead pitch 7.6 mm; RoHS compliant and AEC-Q101 qualified (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to ground or lower-potential node in unidirectional TVS configuration; carries surge current to reference plane. |
| Cathode | Current exit terminal during reverse-biased clamping | Connected to protected line (e.g., 48 V rail); color band identifies this terminal; defines clamping polarity and direction. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood applications including powertrain and ADAS modules requiring zero-failure reliability. |
| 5000 W peak pulse power | Enables single-device protection against severe transients like load dump (ISO 16750-2) without cascaded TVS or crowbar circuits. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., EFT bursts), improving protection margin for sensitive MOSFET gates. |
| 175 °C maximum junction temperature | Supports placement near heat sources (e.g., DC-DC converters) without thermal derating penalties in industrial motor drives. |
| Matte tin plating, J-STD-002 compliant | Ensures robust solder joint integrity in reflow and wave soldering processes; eliminates whisker risk (JESD 201 Class 2). |
Applications
| Automotive Power Rail Protection | Industrial DC Power Supply Output |
|---|---|
|
Use Scenario: Protecting 48 V battery-fed ECUs from load dump transients per ISO 16750-2 Test 5a (75 V, 400 ms). IC Role / Device Role / Timing Role: Unidirectional TVS clamps overvoltage within nanoseconds to prevent damage to MCU, CAN transceivers, and gate drivers. Use Value: 5KP51AHE3_A/C's 82.4 V clamping at 60.7 A ensures downstream components see <85 V, well below 100 V absolute maximum ratings. |
Use Scenario: Safeguarding output of 48 V telecom rectifiers against lightning-induced surges (IEC 61000-4-5, 4 kV line-earth). IC Role / Device Role / Timing Role: High-power TVS absorbs 5000 W surge energy while allowing upstream breaker to trip after sustained overvoltage. Use Value: 500 A IFSM rating supports coordination with 32 A circuit breakers, enabling safe reset without component replacement. |
| Motor Drive DC Bus Protection | Automotive Sensor Signal Line Protection |
|
Use Scenario: Clamping inductive kickback from 48 V BLDC motor controllers during PWM switching. IC Role / Device Role / Timing Role: Fast-response TVS diverts flyback energy away from H-bridge MOSFETs and gate drivers. Use Value: Sub-1 ns response time and low dynamic impedance limit VDS stress during 100 ns–1 μs edge transients. |
Use Scenario: Shielding LIN or SENT sensor lines in engine compartments from coupled transients. IC Role / Device Role / Timing Role: Stand-off voltage (51 V) exceeds LIN bus operating range (0–18 V) while blocking false triggering. Use Value: 2 μA max leakage at VWM preserves signal integrity and minimizes quiescent current in always-on sensor nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ51A | Lower PPPM (600 W), smaller SMB package, same VWM/VBR range, non-AEC-Q101 | Limited to consumer/industrial PCBs with space constraints; insufficient for ISO 16750-2 load dump | Select when board space is critical and surge energy ≤600 W; verify thermal dissipation in confined layouts. |
| 1.5KE51A | Same VWM/VBR/VC specs, 1500 W PPPM, DO-201 package, AEC-Q101 not claimed | Acceptable for lower-energy transients (e.g., IEC 61000-4-4 EFT), but fails ISO 7637-2 Pulse 5 | Choose for cost-sensitive industrial designs where 5000 W headroom is unnecessary and P600 footprint is unavailable. |
Compared with SMBJ51A and 1.5KE51A, the 5KP51AHE3_A/C provides 3.3× and 3.3× higher peak pulse power respectively, AEC-Q101 qualification, and P600 thermal mass-making it the only option for automotive-grade 48 V system protection meeting ISO 16750-2 and ISO 7637-2 requirements.
Availability
5KP51AHE3_A/C is available at Aetrix Electronics and suitable for automotive power distribution, industrial DC power supplies, motor drive DC bus protection, and 48 V sensor interface circuits requiring stable component supply and long-term lifecycle support.
Supply support for 5KP51AHE3_A/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, TVS devices, and optoelectronics with emphasis on reliability and automotive qualification.
The 5KP series was engineered specifically for high-energy transient suppression in automotive and industrial 48 V systems, targeting load dump, lightning, and inductive switching events where legacy TVS families lack sufficient power handling.
FAQ
What is the clamping voltage of the 5KP51AHE3_A/C at its rated peak pulse current?
The 5KP51AHE3_A/C has a maximum clamping voltage (VC) of 82.4 V at 60.7 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per JEDEC test methods and defines the upper voltage limit imposed on protected circuitry during surge events. The 5KP51AHE3_A/C maintains this clamping performance across its full operating temperature range (-55 °C to +175 °C), ensuring consistent protection in harsh environments.
Is the 5KP51AHE3_A/C qualified for automotive applications?
Yes, the 5KP51AHE3_A/C is explicitly AEC-Q101 qualified, as confirmed in Vishay's official documentation (Document Number 88308, Revision 16-Mar-2023). The HE3 suffix denotes AEC-Q101 compliance, and the device is rated for operation from -55 °C to +175 °C junction temperature-meeting requirements for engine bay, powertrain, and ADAS applications. The 5KP51AHE3_A/C is commonly deployed in 48 V automotive systems for load dump and ISO 7637-2 protection.
What does the "_A/C" suffix mean in 5KP51AHE3_A/C?
The "_A/C" suffix in 5KP51AHE3_A/C indicates the preferred packaging code per Vishay's ordering nomenclature: "C" denotes 13-inch diameter paper tape and reel packaging with 800 units per reel. The "A" refers to the revision level of the manufacturing process or test specification. This format aligns with Vishay's standard ordering convention shown in the "ORDERING INFORMATION" section of the 5KP8.5A–5KP188A datasheet.
How does the 5KP51AHE3_A/C compare to the 5KP51A variant?
The 5KP51AHE3_A/C differs from the base 5KP51A primarily in qualification and plating: the HE3 suffix confirms AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, whereas standard 5KP51A (E3 suffix) is commercial-grade only. Both share identical electrical characteristics (VWM = 51 V, VBR = 56.7–62.7 V, VC = 82.4 V), package (P600), and thermal ratings. The 5KP51AHE3_A/C is required for automotive production; 5KP51A suffices for industrial prototypes.
Can the 5KP51AHE3_A/C be used in bidirectional protection circuits?
No, the 5KP51AHE3_A/C is unidirectional only, as stated in the "FEATURES" section of the datasheet. Its polarity is fixed with a cathode band marking, and it conducts only during reverse-biased overvoltage events. For bidirectional protection (e.g., AC lines or differential data buses), a separate bidirectional TVS such as 5KP51CA must be used. Attempting to use the 5KP51AHE3_A/C in bidirectional configurations risks forward conduction and failure during normal signal swings.
5KP51AHE3_A/C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- P600, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 51V
- Voltage - Breakdown (Min):
- 56.7V
- Voltage - Clamping (Max) @ Ipp:
- 82.4V
- Current - Peak Pulse (10/1000µs):
- 60.7A
- Power - Peak Pulse:
- 5000W (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:
- P600
5KP51AHE3_A/C FAQ
1.How can I place an order for 5KP51AHE3_A/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP51AHE3_A/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 5KP51AHE3_A/C reliable?
The price and inventory of 5KP51AHE3_A/C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP51AHE3_A/C is usually 5 days.
3.What payment methods are accepted for 5KP51AHE3_A/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP51AHE3_A/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP51AHE3_A/C?
5KP51AHE3_A/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP51AHE3_A/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 5KP51AHE3_A/C?
For technical support, including 5KP51AHE3_A/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP51AHE3_A/C requirements.
6.How does Aetrix verify that 5KP51AHE3_A/C is sourced from the original manufacturer or authorized distributors?
All 5KP51AHE3_A/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 5KP51AHE3_A/C meets industry standards.
7.What is the process for return or replacement of 5KP51AHE3_A/C?
All 5KP51AHE3_A/C units undergo pre-shipment inspection (PSI). If there is an issue with 5KP51AHE3_A/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 5KP51AHE3_A/C part is unused and in its original packaging.
Return procedure for 5KP51AHE3_A/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5KP51AHE3_A/C Tags
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