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Vishay General Semiconductor - Diodes Division 5KP22A-E3/51
- Part No.:
- 5KP22A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP22A-E3/51.pdf
- Description:
- TVS DIODE 22VWM 35.5VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:4,747
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Product details
Overview
5KP22A-E3/51 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and signal paths. It features a 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR) at 5.0 mA, 35.5 V clamping voltage (VC) at 141 A peak pulse current, and 5000 W peak pulse power rating with 10/1000 μs waveform. It is used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the 5KP22A-E3/51 datasheet, 5KP22A-E3/51 pinout, 5KP22A-E3/51 application, or 5KP22A-E3/51 equivalent, key selection criteria include clamping voltage margin relative to protected device's absolute maximum rating, unidirectional polarity compatibility with DC-biased rails, P600 package thermal performance under repetitive surge conditions, and AEC-Q101 qualification status for automotive deployment.
Technical Context
This TVS diode operates as a voltage-clamped crowbar element - it remains high-impedance below VWM (22 V), then avalanches sharply at VBR (min 24.4 V) to limit transient overvoltage across protected circuitry. Its low incremental surge resistance ensures stable clamping at VC = 35.5 V even under 141 A peak pulse current.
The P600 package uses glass-passivated chip junction construction, enabling 175 °C maximum junction temperature and robust 500 A IFSM surge capability. It is RoHS-compliant (E3 suffix), meets JESD 201 Class 1A whisker test, and is qualified to AEC-Q101 for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22.0 V - Maximum continuous reverse operating voltage before conduction begins; sets upper limit of normal DC rail operation. |
| VBR (min/max) | 24.4 V / 26.9 V at 5.0 mA - Breakdown onset range; defines minimum overvoltage threshold for clamping activation. |
| VC @ IPPM | 35.5 V at 141 A - Clamped voltage during 10/1000 μs surge; must stay below protected device's absolute max rating. |
| PPPM | 5000 W - Peak pulse power handling per JEDEC standard; enables protection against lightning-induced surges per IEC 61000-4-5. |
| IFSM | 500 A - Non-repetitive forward surge current rating; supports crowbar-style fault clearing without device failure. |
| Polarity | Unidirectional - Designed for DC-biased applications only; cathode marked by color band; not suitable for AC line protection. |
| TJ max. | 175 °C - Maximum junction temperature; allows operation in under-hood automotive environments with proper PCB copper area. |
Pinout & Package
5KP22A-E3/51 is housed in a P600 axial-leaded package: molded epoxy body with matte tin-plated leads, UL 94 V-0 rated, lead length 9.1–9.5 mm, diameter 9.1–9.5 mm. Polarity is indicated by a cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Current entry point during forward conduction | Connected to lower-potential side of protected DC rail; enables crowbar action when surge exceeds VBR. |
| Cathode (banded end) | Current exit point during reverse avalanche | Connected to higher-potential side (e.g., +12 V rail); provides low-impedance shunt path to ground during transients. |
Key Features
| Feature | Design Value |
|---|---|
| 5000 W peak pulse power | Enables single-device protection against severe transients such as ISO 7637-2 Pulse 5a (load dump) in 12 V automotive systems. |
| AEC-Q101 qualified | Validated for automotive under-hood use including temperature cycling, humidity bias, and mechanical shock per stress test requirements. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage overshoot during surge events, reducing risk of latch-up or gate oxide damage in downstream MOSFETs/ICs. |
| P600 glass-passivated junction | Provides stable leakage (<2.0 μA at VWM) and repeatable breakdown behavior over 10+ years in industrial environments. |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance; eliminates tin whisker risk in high-reliability solder joints on PCBs. |
Applications
| Automotive Power Supply Protection | Industrial DC Motor Drive Inputs |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients during alternator regulation failure. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp spikes up to 120 V. Use Value: Withstands 5000 W surges while limiting clamped voltage to 35.5 V - well below 40 V absolute max rating of typical PMICs and microcontrollers. |
Use Scenario: Safeguarding H-bridge gate drivers from inductive kickback when stopping brushed DC motors. IC Role / Device Role / Timing Role: Mounted across motor supply terminals to absorb energy from L·di/dt collapse during PWM turn-off. Use Value: 141 A peak pulse current rating handles >100 mJ energy pulses; fast response time prevents driver latch-up before protection logic engages. |
| Telecom DC Feeder Line Protection | Computer PSU Output Rail Clamping |
Use Scenario: Shielding PoE-powered equipment front-end from induced surges on long outdoor DC feeder cables. IC Role / Device Role / Timing Role: Installed at DC input connector to shunt common-mode transients before entering DC/DC converter stage. Use Value: 22 V VWM matches nominal 24 V PoE systems; 35.5 V VC ensures safe margin below 36 V input rating of isolated DC/DC modules. |
Use Scenario: Preventing overvoltage damage to SATA/M.2 SSDs and memory modules during ATX PSU overvoltage faults. IC Role / Device Role / Timing Role: Placed across +5 V or +12 V output rails to activate before OVP circuit trips (~10–20 ms). Use Value: 5000 W rating absorbs full output capacitor discharge energy; unidirectional polarity avoids interference with active regulation feedback loop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A-E3/52 | Lower PPPM (600 W), smaller SMB package, same VWM/VBR/VC specs | Limited to low-energy surges (IEC 61000-4-2 contact discharge only); unsuitable for load dump or motor drive | Select when board space is constrained and surge threat level is limited to ESD or minor switching noise. |
| 1.5KE22A | Same VWM/VBR/VC, but 1500 W PPPM, DO-201 package, no AEC-Q101 qualification | Lacks automotive qualification and thermal robustness; lower surge endurance in repetitive scenarios | Choose for cost-sensitive industrial controls where AEC-Q101 is not required and surge repetition is infrequent. |
Compared with SMBJ22A-E3/52 and 1.5KE22A, the 5KP22A-E3/51 delivers 3.3× higher peak power handling and automotive-grade reliability in the same voltage class - making it the only option among the three validated for ISO 7637-2 compliance in vehicle ECUs.
Availability
5KP22A-E3/51 is available at Aetrix Electronics and suitable for automotive electronics, industrial motor drives, telecom power feeders, and computer PSU output protection requiring stable component supply across multi-year production cycles.
Supply support for 5KP22A-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 high-reliability, high-power, and automotive-qualified components.
The 5KP series was engineered specifically for high-energy transient suppression in automotive and industrial power systems - delivering 5 kW surge capacity in a ruggedized P600 package with AEC-Q101 validation.
FAQ
What is the clamping voltage of the 5KP22A-E3/51 under maximum surge conditions?
The 5KP22A-E3/51 has a maximum clamping voltage (VC) of 35.5 V when subjected to its rated peak pulse current of 141 A with a 10/1000 μs waveform. This value is measured per JEDEC standards and represents the upper voltage limit imposed on protected circuitry during worst-case transient events. The 5KP22A-E3/51 maintains this clamping performance consistently due to its glass-passivated junction and low incremental surge resistance.
Is the 5KP22A-E3/51 suitable for bidirectional signal line protection?
No, the 5KP22A-E3/51 is strictly unidirectional and intended for DC power rail protection only. Its electrical characteristics - including VWM, VBR, and VC - are specified for reverse-bias avalanche operation. For bidirectional signal line protection (e.g., RS-485, USB), a symmetrical TVS like SMAJ22A or a dedicated bidirectional array must be used instead of the 5KP22A-E3/51.
Does the 5KP22A-E3/51 require a heatsink for standard operation?
The 5KP22A-E3/51 does not require an external heatsink for single-event surge suppression, as energy dissipation is transient and brief. However, for applications involving repetitive surges (e.g., motor commutation), PCB copper area ≥ 250 mm² per lead is recommended to maintain junction temperature below 175 °C. The 5KP22A-E3/51's P600 package is thermally optimized for such mounting practices.
What is the meaning of the "E3/51" suffix in 5KP22A-E3/51?
The "E3" suffix indicates RoHS-compliant construction with matte tin-plated leads meeting JESD 201 Class 1A whisker resistance, while "/51" denotes the preferred packaging code - in this case, 500 pieces per 13-inch paper tape and reel. This packaging format ensures automated placement compatibility and traceable lot control for the 5KP22A-E3/51 in high-volume manufacturing.
How does the 5KP22A-E3/51 compare to standard Zener diodes for overvoltage protection?
Unlike general-purpose Zener diodes, the 5KP22A-E3/51 is engineered for high-power transient suppression - offering 5000 W peak pulse capability, sub-nanosecond response, and controlled clamping behavior under extreme surge currents. Standard Zeners lack surge-rated junction construction and would fail catastrophically under the same 141 A transient that the 5KP22A-E3/51 clamps reliably.
5KP22A-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):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 141A
- 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
5KP22A-E3/51 FAQ
1.How can I place an order for 5KP22A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP22A-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 5KP22A-E3/51 reliable?
The price and inventory of 5KP22A-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 5KP22A-E3/51 is usually 5 days.
3.What payment methods are accepted for 5KP22A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP22A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP22A-E3/51?
5KP22A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP22A-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 5KP22A-E3/51?
For technical support, including 5KP22A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP22A-E3/51 requirements.
6.How does Aetrix verify that 5KP22A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 5KP22A-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 5KP22A-E3/51 meets industry standards.
7.What is the process for return or replacement of 5KP22A-E3/51?
All 5KP22A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP22A-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 5KP22A-E3/51 part is unused and in its original packaging.
Return procedure for 5KP22A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5KP22A-E3/51 Tags
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