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Vishay General Semiconductor - Diodes Division 5KP33HE3/73
- Part No.:
- 5KP33HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP33HE3/73.pdf
- Description:
- TVS DIODE 33VWM 59VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:3,812
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Product details
Overview
5KP33HE3/73 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in P600 package, designed for high-energy surge protection on DC power rails and signal lines. It features 33 V stand-off voltage (VWM), 36.7–40.6 V breakdown voltage (VBR) at 5 mA, 53.3 V clamping voltage at 93.8 A peak pulse current, and 5000 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the 5KP33HE3/73 datasheet, 5KP33HE3/73 pinout, 5KP33HE3/73 application, or 5KP33HE3/73 equivalent, this device is selected for automotive-grade overvoltage protection where AEC-Q101 qualification, low clamping ratio, and robust 175 °C junction temperature capability are required in power supply output stages and sensor interface circuits.
Technical Context
The 5KP33HE3/73 employs a glass-passivated P600 chip junction optimized for fast response to transients induced by inductive load switching or ESD events. Its unidirectional polarity enables integration into DC-biased circuits without reverse conduction concerns during normal operation.
It delivers 5000 W peak pulse power handling with 10/1000 µs waveform at TA = 25 °C, derating linearly above 25 °C per Fig. 2, and supports 600 A non-repetitive forward surge current (IFSM) per 8.3 ms half-sine wave - critical for crowbar-replacement applications in industrial power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin. |
| VBR min/max | 36.7 V / 40.6 V at 5 mA - Confirmed breakdown range ensures reliable turn-on within specified tolerance band. |
| VC @ IPPM | 53.3 V at 93.8 A - Clamping voltage under full-rated surge; determines protected circuit's maximum transient exposure. |
| PPPM | 5000 W - Peak pulse power handling with 10/1000 µs waveform; enables suppression of high-energy lightning-induced surges. |
| TJ max | 175 °C - Maximum junction temperature; supports operation in under-hood automotive environments and enclosed industrial enclosures. |
| IFSM | 600 A - Non-repetitive forward surge current rating; allows survival of short-circuit fault currents before fuse/breaker clearing. |
| Polarity | Unidirectional - Requires correct orientation in DC circuits; cathode marked by color band for assembly verification. |
Pinout & Package
5KP33HE3/73 uses the P600 axial-leaded package: molded epoxy body meeting UL 94 V-0, matte tin-plated leads solderable per J-STD-002, and cathode identified by a color band. Lead length is 9.1–9.5 mm (0.340–0.375 in), body diameter 9.1–9.5 mm, and overall length 19.0 mm min.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path during clamping | Connected to lower-potential side (e.g., ground or return rail) in unidirectional TVS configuration. |
| Cathode | Clamping node and voltage reference | Marked by color band; connected to protected line (e.g., +33 V rail) to clamp positive transients to ~53.3 V. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - enables use in engine control units and ADAS sensor modules. |
| 5000 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge events without degradation when properly mounted. |
| Low clamping ratio (VC/VBR ≈ 1.36) | Minimizes overvoltage stress on downstream MOSFETs or ICs during transient events. |
| 175 °C junction rating | Supports operation in high-ambient environments such as power inverters and motor drives without thermal derating penalties. |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance - suitable for long-life industrial deployments requiring reliability assurance. |
Applications
| Automotive Power Rail Protection | Industrial DC Power Supply Output |
|---|---|
Use Scenario: Protecting 12 V/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 positive surges up to 120 V. Use Value: AEC-Q101 qualification and 175 °C TJ rating ensure compliance with ISO 7637-2 Pulse 5a/b requirements in under-hood locations. |
Use Scenario: Safeguarding output stage of 33 V switching power supply against inductive kickback and lightning surges. IC Role / Device Role / Timing Role: Crowbar-replacement device absorbing energy until upstream breaker trips. Use Value: 5000 W PPPM and 600 A IFSM allow sustained clamping while enabling system reset without component replacement. |
| Sensor Interface Line Protection | Telecom DC Feeder Protection |
Use Scenario: Shielding analog/digital sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-leakage (2 µA @ 33 V) unidirectional TVS on signal line to ground. Use Value: Tight VBR tolerance (±5 %) and 53.3 V VC ensure signal integrity remains intact during 8 kV contact ESD per IEC 61000-4-2. |
Use Scenario: Protecting -48 V telecom power feeders from induced surges on outside plant wiring. IC Role / Device Role / Timing Role: High-power TVS on DC input of remote radio head or base station power module. Use Value: P600 package thermal mass and 8.0 W steady-state dissipation support intermittent surge duty cycles in outdoor cabinets. |
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 PPPM (600 W), SMC package, 33 V VWM, 53.3 V VC @ 11.8 A | Not suitable for >1 kA surge environments; limited to board-level ESD, not system-level lightning. | Select only for space-constrained PCBs where 5KP33HE3/73's P600 size is prohibitive and surge energy is <100 J. |
| 1.5KE33CA | Bi-directional, DO-201 package, same VWM/VC but lower IFSM (400 A), no AEC-Q101 qualification | Lacks automotive qualification and reduced surge endurance; unsuitable for under-hood deployment. | Acceptable for cost-sensitive industrial AC/DC inputs where bidirectional clamping is needed and ambient temperature stays <125 °C. |
Compared with SMBJ33A-E3/52 and 1.5KE33CA, the 5KP33HE3/73 provides 8.3× higher peak pulse power, AEC-Q101 validation, and superior thermal robustness - making it the only choice for automotive load-dump protection and high-reliability industrial power rail hardening.
Availability
5KP33HE3/73 is available at Aetrix Electronics and suitable for automotive electronics, industrial power supplies, sensor interface modules, and telecom DC feeder systems requiring stable component supply across extended production lifecycles.
Supply support for 5KP33HE3/73 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, and protection devices with emphasis on reliability and automotive-grade qualification.
The 5KP series was engineered specifically for high-energy transient suppression in DC power systems - targeting replacement of crowbar circuits and compliance with ISO 7637-2, IEC 61000-4-5, and AEC-Q101 stress requirements.
FAQ
What is the clamping voltage of the 5KP33HE3/73 under full-rated surge conditions?
The 5KP33HE3/73 exhibits a maximum clamping voltage (VC) of 53.3 V when subjected to its rated peak pulse current of 93.8 A with a 10/1000 µs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during transient events. The 5KP33HE3/73 maintains this clamping performance across its operational temperature range, supporting design margin calculations for downstream components.
Is the 5KP33HE3/73 suitable for automotive applications?
Yes, the 5KP33HE3/73 is AEC-Q101 qualified and explicitly rated for automotive use. Its 175 °C maximum junction temperature, robust P600 package, and validated performance under load dump and ISO 7637-2 Pulse 5a/b conditions make it appropriate for engine control units, body control modules, and ADAS sensor power rails. The HE3 suffix confirms compliance with JESD 201 Class 2 whisker testing for long-term reliability.
How does the 5KP33HE3/73 differ from the standard 5KP33A-E3/73 variant?
The 5KP33HE3/73 differs from 5KP33A-E3/73 in qualification and plating: "HE3" denotes AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, whereas "E3" indicates commercial-grade RoHS compliance only (JESD 201 Class 1A). Both share identical electrical specs (VWM = 33 V, VC = 53.3 V), but the HE3 version is mandatory for automotive production and high-reliability industrial deployments.
What is the maximum steady-state power dissipation of the 5KP33HE3/73?
The 5KP33HE3/73 has a maximum steady-state power dissipation (PD) of 8.0 W when mounted on an infinite heatsink at lead temperature (TL) of 75 °C, per Figure 5 in the datasheet. This rating applies to continuous reverse leakage conditions and must be derated linearly above 25 °C ambient. For pulsed operation, the device relies on its 5000 W peak pulse rating rather than PD limits.
Can the 5KP33HE3/73 be used in bidirectional protection configurations?
No, the 5KP33HE3/73 is unidirectional only, as confirmed in the "Polarity" section of the datasheet. It clamps positive transients relative to its cathode terminal and conducts only in reverse breakdown. For bidirectional protection, a separate device such as 1.5KE33CA or paired unidirectional TVS diodes would be required - the 5KP33HE3/73 itself cannot suppress negative-going surges on a floating line.
5KP33HE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- P600, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 59V
- Current - Peak Pulse (10/1000µs):
- 84.7A
- 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
5KP33HE3/73 FAQ
1.How can I place an order for 5KP33HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP33HE3/73 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 5KP33HE3/73 reliable?
The price and inventory of 5KP33HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP33HE3/73 is usually 5 days.
3.What payment methods are accepted for 5KP33HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP33HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP33HE3/73?
5KP33HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP33HE3/73 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 5KP33HE3/73?
For technical support, including 5KP33HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP33HE3/73 requirements.
6.How does Aetrix verify that 5KP33HE3/73 is sourced from the original manufacturer or authorized distributors?
All 5KP33HE3/73 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 5KP33HE3/73 meets industry standards.
7.What is the process for return or replacement of 5KP33HE3/73?
All 5KP33HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP33HE3/73, 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 5KP33HE3/73 part is unused and in its original packaging.
Return procedure for 5KP33HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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