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Vishay General Semiconductor - Diodes Division 5KP43A-E3/54
- Part No.:
- 5KP43A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP43A-E3/54.pdf
- Description:
- TVS DIODE 43VWM 69.4VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:1,220
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Product details
Overview
5KP43A-E3/54 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 43 V stand-off voltage (VWM), 47.8–52.8 V breakdown voltage (VBR), 69.4 V clamping voltage at 72 A peak pulse current, and 5000 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the 5KP43A-E3/54 datasheet, 5KP43A-E3/54 pinout, 5KP43A-E3/54 application, or 5KP43A-E3/54 equivalent, key selection criteria include clamping performance under 72 A surge, unidirectional polarity confirmation, P600 thermal derating behavior above 25 °C, and AEC-Q101 qualification status for automotive-grade reliability.
Technical Context
The 5KP43A-E3/54 operates as a silicon avalanche diode with glass-passivated P600 junction, optimized for non-repetitive transient suppression. Its clamping action begins at 47.8 V (min VBR), limits voltage to ≤69.4 V at 72 A (IPPM), and sustains 5000 W peak pulse power under JEDEC-standard 10/1000 μs waveform at 0.01% duty cycle.
Thermal design requires attention to lead temperature (TL) derating: power dissipation drops from 8.0 W at TL = 75 °C to zero at TL = 175 °C. The device exhibits low incremental surge resistance and fast response time (<1 ns), enabling effective protection against lightning-induced transients and inductive switching spikes in DC power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43 V - maximum continuous reverse operating voltage before conduction begins; defines safe DC blocking level |
| VBR (min/max) | 47.8 V / 52.8 V - breakdown voltage range at 5 mA test current; determines precise turn-on threshold |
| VC @ IPPM | 69.4 V - clamped voltage at 72 A peak pulse current; sets worst-case overvoltage seen by protected circuit |
| PPPM | 5000 W - peak pulse power handling with 10/1000 μs waveform; enables robust protection against high-energy surges |
| IFSM | 500 A - 8.3 ms half-sine surge current rating; supports single-event fault clearing without destruction |
| TJ max. | +175 °C - maximum junction temperature; allows operation in under-hood automotive environments |
| Polarity | Unidirectional - cathode-band marked; suitable only for DC-biased or positive-going transient protection |
Pinout & Package
Package: P600 molded epoxy case with matte tin-plated leads; meets UL 94 V-0 flammability rating and JESD 22-B102 solderability. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-potential rail; completes conduction path during transient |
| Cathode | High-side connection point | Marked with color band; connects to protected line (e.g., +43 V rail); conducts when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics per stress test requirements |
| 5000 W peak pulse power | Withstands high-energy transients (e.g., ISO 7637-2 Pulse 5a) without degradation or failure |
| Low clamping ratio (VC/VBR ≈ 1.36) | Minimizes overvoltage stress on downstream components compared to competing TVS devices |
| P600 package thermal mass | Enables 8.0 W power dissipation on infinite heatsink at TL = 75 °C; supports short-duration surge energy absorption |
| Fast response time | Sub-nanosecond avalanche turn-on ensures protection before sensitive ICs experience overstress |
Applications
| Automotive Power Rail Protection | Industrial DC Power Supply Output |
|---|---|
Use Scenario: Protecting 48 V battery-fed ECUs from load dump and alternator transients per ISO 16750-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed across main power input to clamp surges >69.4 V before reaching PMIC or microcontroller. Use Value: Prevents latch-up or permanent damage to 43 V-rated power management ICs during 120 V/50 ms load dump events. | Use Scenario: Safeguarding output of 48 V telecom rectifiers against lightning-induced surges on outdoor cabinet feeds. IC Role / Device Role / Timing Role: Primary surge limiter on +43 V output rail, coordinated with upstream fuse for fail-safe shutdown. Use Value: Limits transient voltage to ≤69.4 V at 72 A, allowing fuse time-to-trip while preserving downstream DC-DC converters. |
| Sensor Interface Line Protection | MOSFET Gate Driver Protection |
Use Scenario: Shielding analog sensor inputs (e.g., pressure, temperature) in harsh industrial PLC modules. IC Role / Device Role / Timing Role: TVS connected between signal line and ground to shunt ESD and fast transients. Use Value: Clamps 8 kV HBM ESD events to <70 V, preventing op-amp input stage damage without adding capacitance penalty. | Use Scenario: Guarding high-side N-channel MOSFET gate drivers in motor control inverters exposed to inductive kickback. IC Role / Device Role / Timing Role: Placed between gate and source to clamp Miller-induced voltage spikes during switching transitions. Use Value: Suppresses >100 V spikes to ≤69.4 V, avoiding unintended gate oxide breakdown and ensuring reliable FET commutation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A-E3/52 | Lower PPPM (600 W), smaller SMB package, same VWM/VBR/VC ratings | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or lightning-level surges | Select when space-constrained PCB layout prioritizes footprint over surge margin |
| 5KP43CA-E3/54 | Same package and ratings but bidirectional; includes symmetric clamping for AC-coupled or floating lines | Required where both positive and negative transients occur (e.g., RS-485 bus, transformer-coupled signals) | Choose only if bipolar protection is needed; otherwise 5KP43A-E3/54 offers better cost and unidirectional optimization |
Compared with SMBJ43A-E3/52 and 5KP43CA-E3/54, the 5KP43A-E3/54 delivers 8.3× higher peak pulse power in the same P600 form factor and avoids unnecessary bidirectional complexity where DC-biased rails dominate - making it optimal for automotive power distribution and industrial 48 V systems.
Availability
5KP43A-E3/54 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial DC power supply output stabilization, and sensor interface line safeguarding requiring stable component supply and long-term lifecycle support.
Supply support for 5KP43A-E3/54 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 demanding DC power systems - targeting automotive load-dump immunity, industrial power supply robustness, and telecom surge compliance.
FAQ
What is the clamping voltage of the 5KP43A-E3/54 under maximum rated surge current?
The 5KP43A-E3/54 clamps to a maximum of 69.4 V at its rated peak pulse current of 72 A (10/1000 μs waveform). This value is guaranteed per JEDEC test conditions and represents the highest voltage the protected circuit will experience during a full-power transient event. Designers must verify that downstream components tolerate this clamping level under worst-case surge conditions.
Is the 5KP43A-E3/54 suitable for automotive applications?
Yes, the 5KP43A-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use. Its 175 °C maximum junction temperature, robust P600 package, and ability to withstand ISO 7637-2 load dump pulses make it appropriate for engine control units, body control modules, and ADAS power domains - provided thermal layout accommodates its 8.0 W power dissipation limit at TL = 75 °C.
How does the 5KP43A-E3/54 differ from the bidirectional 5KP43CA-E3/54?
The 5KP43A-E3/54 is unidirectional and protects only positive-going transients relative to ground, while the 5KP43CA-E3/54 provides symmetrical clamping for both polarities. Their VWM, VBR, and VC ratings are identical, but the CA version has no polarity marking and handles AC-coupled or floating signal lines. Use 5KP43A-E3/54 for DC rails with defined ground reference.
What is the maximum steady-state power dissipation of the 5KP43A-E3/54?
The 5KP43A-E3/54 dissipates up to 8.0 W when mounted on an infinite heatsink at a lead temperature (TL) of 75 °C. This rating decreases linearly to zero at TL = 175 °C per the derating curve in Figure 5. Continuous DC power dissipation is not intended; the device is rated for non-repetitive transient events only.
Does the 5KP43A-E3/54 require a heatsink in typical applications?
No external heatsink is required for transient suppression, as energy absorption occurs in sub-millisecond bursts. However, PCB copper area connected to both leads improves thermal spreading during repeated surges. For applications with frequent transients (>0.01% duty cycle), thermal simulation of the P600 pad layout is recommended to maintain TJ < 175 °C.
5KP43A-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- P600, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- 72A
- 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
5KP43A-E3/54 FAQ
1.How can I place an order for 5KP43A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP43A-E3/54 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 5KP43A-E3/54 reliable?
The price and inventory of 5KP43A-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP43A-E3/54 is usually 5 days.
3.What payment methods are accepted for 5KP43A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP43A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP43A-E3/54?
5KP43A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP43A-E3/54 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 5KP43A-E3/54?
For technical support, including 5KP43A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP43A-E3/54 requirements.
6.How does Aetrix verify that 5KP43A-E3/54 is sourced from the original manufacturer or authorized distributors?
All 5KP43A-E3/54 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 5KP43A-E3/54 meets industry standards.
7.What is the process for return or replacement of 5KP43A-E3/54?
All 5KP43A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP43A-E3/54, 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 5KP43A-E3/54 part is unused and in its original packaging.
Return procedure for 5KP43A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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