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Vishay General Semiconductor - Diodes Division 5KP33A-E3/51
- Part No.:
- 5KP33A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP33A-E3/51.pdf
- Description:
- TVS DIODE 33VWM 53.3VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:8,315
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Product details
Overview
5KP33A-E3/51 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in P600 package, rated for 5000 W peak pulse power (10/1000 μs), 33 V stand-off voltage (VWM), and 53.3 V maximum clamping voltage (VC) at 93.8 A peak pulse current. It protects MOSFETs and ICs in automotive power supplies against inductive switching transients.
For engineers reviewing the 5KP33A-E3/51 datasheet, 5KP33A-E3/51 pinout, 5KP33A-E3/51 application, or 5KP33A-E3/51 equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal derating behavior, P600 mechanical dimensions, and real-world protection use cases - all aligned to JEDEC registered data and Vishay's 88308 document revision.
Technical Context
This TVS diode operates as a unidirectional clamping device with glass-passivated P600 junction, optimized for high-energy surge suppression in DC power rails. Its 33 V stand-off voltage ensures stable blocking below system overvoltage thresholds, while its 53.3 V clamping voltage limits downstream stress during 10/1000 μs transients up to 5000 W.
Designed for automotive-grade reliability, it meets AEC-Q101 qualification (HE3 suffix variant), supports 175 °C max junction temperature, and features low incremental surge resistance for consistent clamping performance across repetitive surges at 0.01 % duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 33 V - Maximum continuous reverse voltage before leakage exceeds 2 μA; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 36.7–40.6 V at 5 mA - Measured breakdown range confirming tight 5 % tolerance per JEDEC registration. |
| VC (Clamping Voltage) | 53.3 V at 93.8 A - Peak voltage seen by protected circuit during full-rated 10/1000 μs surge; enables robust MOSFET/IC survival. |
| PPPM (Peak Pulse Power) | 5000 W - Sustained energy absorption capability under standardized 10/1000 μs waveform; critical for automotive load-dump immunity. |
| TJ max. | 175 °C - Maximum junction temperature enabling operation in under-hood environments without thermal shutdown. |
| Polarity | Unidirectional - Cathode-banded configuration; blocks reverse voltage and clamps positive transients only. |
| Package | P600 - Axial-leaded, molded epoxy case meeting UL 94 V-0; provides mechanical robustness and thermal path via leads. |
Pinout & Package
P600 package: axial-leaded, cylindrical epoxy body with cathode band marking; lead finish is matte tin, solderable per J-STD-002 and JESD 22-B102; RoHS-compliant (E3 suffix); 2.776 g unit weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward conduction terminal | Connects to lower-potential side of protected line; conducts during forward surge events (e.g., reverse battery). |
| Cathode (banded end) | Clamping reference terminal | Connects to higher-potential rail; initiates avalanche breakdown when reverse voltage exceeds VWM, shunting surge current to ground. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HE3 variant) | Validated for automotive under-hood applications including engine control units and body electronics. |
| 5000 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Load Dump Pulse 5a (12 V systems) without degradation or failure. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage stress on downstream silicon; improves system-level ESD and surge margin. |
| UL 94 V-0 compliant molding compound | Ensures flame retardancy in enclosed automotive modules and industrial enclosures. |
| 175 °C junction rating | Supports operation in high-ambient environments such as powertrain and ADAS subsystems. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial DC Motor Drive |
|---|---|
Use Scenario: Protecting microcontroller I/O and power MOSFET gate drivers from load dump and alternator ripple in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed across input rail to absorb >5000 W transients within microseconds. Use Value: Prevents latch-up or gate oxide rupture in 3.3 V/5 V logic and 40 V-rated MOSFETs during ISO 7637-2 Pulse 5a events. | Use Scenario: Safeguarding H-bridge driver ICs and feedback sensors against inductive kickback from brushed DC motors. IC Role / Device Role / Timing Role: Standoff-clamp protector on motor supply rail, triggered only during >33 V flyback spikes. Use Value: Enables reliable reset after fuse interruption by limiting voltage overshoot to ≤53.3 V, preserving isolation barriers and ADC inputs. |
| Telecom Power Supply Output | Consumer Appliance Main Board |
Use Scenario: Secondary-side overvoltage protection on +48 V telecom rectifier outputs exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response clamping element parallel to output capacitor, activated within <1 ns. Use Value: Maintains EN 61000-4-5 Level 4 compliance (4 kV line-earth) without derating adjacent regulators or optocouplers. | Use Scenario: Input rail protection for smart home hub mainboards subjected to user-insertion transients and relay contact bounce. IC Role / Device Role / Timing Role: Primary surge arrestor on 24 V auxiliary supply feeding MCU, Wi-Fi SoC, and relay drivers. Use Value: Eliminates need for redundant fusing by allowing controlled crowbar-like conduction while preserving board-level functionality post-event. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A-E3/52 | Lower peak power (600 W), smaller SMB package, same 33 V VWM and unidirectional polarity. | Suitable for PCB space-constrained consumer electronics; not rated for automotive load dump. | Select when board area is limited and surge energy stays below 600 W. |
| 1.5KE33A | Same P600 package and 5000 W rating but ±5 % VBR tolerance (vs. 5KP33A-E3/51's tighter 5 % VWM-referenced tolerance); no AEC-Q101 qualification. | Acceptable for industrial power supplies where automotive qualification is not required. | Choose for cost-sensitive industrial designs where AEC-Q101 is unnecessary. |
Compared with SMBJ33A-E3/52 and 1.5KE33A, the 5KP33A-E3/51 delivers superior automotive-grade reliability via AEC-Q101 validation, tighter voltage tolerance referenced to stand-off level, and guaranteed 5000 W clamping performance - making it the preferred choice for safety-critical 12 V vehicle systems.
Availability
5KP33A-E3/51 is available at Aetrix Electronics and suitable for automotive ECUs, industrial motor drives, telecom power supplies, and consumer appliance main boards requiring stable component supply with traceable sourcing and long-term lifecycle support.
Supply support for 5KP33A-E3/51 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, power handling, and automotive qualification.
The 5KP series was engineered specifically for high-energy transient suppression in automotive and industrial DC power systems, targeting replacement of crowbar circuits while enabling fuse-based fault clearing and system reset capability.
FAQ
What is the clamping voltage of the 5KP33A-E3/51 under full-rated surge conditions?
The 5KP33A-E3/51 exhibits a maximum clamping voltage (VC) of 53.3 V when subjected to its rated 93.8 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and guarantees predictable overvoltage limiting for downstream components such as MOSFETs and microcontrollers in the 5KP33A-E3/51 protection circuit.
Is the 5KP33A-E3/51 suitable for automotive applications?
Yes - the 5KP33A-E3/51 is RoHS-compliant and belongs to the AEC-Q101-qualified 5KP family (with HE3 suffix variants). While the E3/51 variant itself is commercial-grade, its design, thermal rating (175 °C TJ max), and electrical parameters align with automotive requirements including ISO 7637-2 load dump immunity. For certified automotive use, specify the HE3 suffix version.
What does the "-E3/51" suffix indicate in 5KP33A-E3/51?
The "-E3" denotes RoHS-compliant matte tin plating and JESD 201 Class 1A whisker resistance; "/51" specifies the packaging option - 51 indicates 800-piece tape-and-reel delivery on 13″ diameter reels. This ordering code ensures compatibility with automated SMT placement equipment and satisfies IPC/JEDEC interconnect reliability standards for the 5KP33A-E3/51.
How does the 5KP33A-E3/51 differ from the 1.5KE33A in practical design?
The 5KP33A-E3/51 offers identical P600 packaging and 5000 W rating but features tighter 5 % VWM-based tolerance (vs. 1.5KE33A's VBR-based ±5 %), AEC-Q101 qualification path, and documented crowbar-replacement capability. In practice, the 5KP33A-E3/51 provides more consistent clamping onset and validated automotive suitability - critical for ECU and ADAS designs where the 1.5KE33A may lack qualification evidence.
Can the 5KP33A-E3/51 be used in bidirectional configurations?
No - the 5KP33A-E3/51 is strictly unidirectional, as confirmed by Vishay's documentation stating "available in uni-directional polarity only." For bidirectional protection, a pair of 5KP33A-E3/51 devices in series-opposing configuration or a dedicated bidirectional TVS (e.g., 5KP33CA) must be used; substituting a single 5KP33A-E3/51 will not suppress negative transients.
5KP33A-E3/51 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):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 53.3V
- Current - Peak Pulse (10/1000µs):
- 93.8A
- Power - Peak Pulse:
- 5000W (5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- P600
5KP33A-E3/51 FAQ
1.How can I place an order for 5KP33A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP33A-E3/51 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 5KP33A-E3/51 reliable?
The price and inventory of 5KP33A-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP33A-E3/51 is usually 5 days.
3.What payment methods are accepted for 5KP33A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP33A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP33A-E3/51?
5KP33A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP33A-E3/51 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 5KP33A-E3/51?
For technical support, including 5KP33A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP33A-E3/51 requirements.
6.How does Aetrix verify that 5KP33A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 5KP33A-E3/51 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 5KP33A-E3/51 meets industry standards.
7.What is the process for return or replacement of 5KP33A-E3/51?
All 5KP33A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP33A-E3/51, 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 5KP33A-E3/51 part is unused and in its original packaging.
Return procedure for 5KP33A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5KP33A-E3/51 Tags
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