My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 5KP43A-E3/51
- Part No.:
- 5KP43A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP43A-E3/51.pdf
- Description:
- TVS DIODE 43VWM 69.4VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:3,619
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
5KP43A-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 43 V stand-off voltage (VWM), 47.8–52.8 V breakdown voltage (VBR) at 5 mA, 5000 W peak pulse power (10/1000 μs), and clamps transients to ≤69.4 V at 72 A. It is widely used in automotive power supply inputs and industrial motor drive control circuits.
For engineers reviewing the 5KP43A-E3/51 datasheet, 5KP43A-E3/51 pinout, 5KP43A-E3/51 application, or 5KP43A-E3/51 equivalent, key selection criteria include clamping voltage margin vs. protected IC's absolute maximum rating, unidirectional polarity compatibility with DC rail topology, P600 package thermal derating above 25 °C, and AEC-Q101 qualification for automotive under-hood deployment.
Technical Context
This TVS diode employs a glass-passivated P600 chip junction optimized for fast response (<1 ns) and low incremental surge resistance. Its unidirectional configuration allows integration into positive-rail protection schemes without reverse-bias leakage concerns during normal operation.
The device operates across –55 °C to +175 °C junction temperature range and sustains 5000 W peak pulse power only under strict 10/1000 μs waveform conditions with ≤0.01 % duty cycle. Thermal performance requires PCB copper area or heatsinking per Fig. 5 to maintain 8.0 W steady-state dissipation at TL = 75 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin. |
| VBR min/max | 47.8 V / 52.8 V at 5 mA - Breakdown onset range; determines worst-case clamping headroom. |
| VC @ IPPM | ≤69.4 V at 72 A - Clamped voltage during 10/1000 μs surge; must stay below protected circuit's max rating. |
| PPPM | 5000 W - Peak transient energy absorption capability; validates suitability for IEC 61000-4-5 Level 4 surges. |
| TJ max | +175 °C - Maximum junction temperature; enables under-hood automotive use with proper thermal design. |
| Polarity | Unidirectional - Requires correct orientation on positive DC rails; not suitable for AC or bidirectional signal lines. |
| AEC-Q101 | Qualified - Confirmed reliability for automotive electronics per stress test standard; supports PPAP documentation. |
Pinout & Package
Package: P600 molded epoxy case with matte tin-plated leads; cathode denoted by color band; RoHS-compliant (E3 suffix); UL 94 V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; carries full surge current during clamping. |
| Cathode | High-side connection point | Connected to protected line (e.g., +43 V rail); color band identifies this terminal. |
Key Features
| Feature | Design Value |
|---|---|
| 5000 W peak pulse power (10/1000 μs) | Enables single-device protection against severe lightning-induced surges per IEC 61000-4-5. |
| Clamping voltage ≤69.4 V at 72 A | Provides ≥26 V margin below typical 95 V automotive load-dump threshold, ensuring MOSFET gate driver survival. |
| AEC-Q101 qualification | Validates robustness for automotive engine control units, body controllers, and ADAS power modules. |
| P600 package with 2.776 g unit weight | Supports manual or automated insertion; thermal mass aids short-duration surge energy absorption. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., inductive switch-off), improving protection fidelity. |
Applications
| Automotive Power Input Protection | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Protecting engine control unit (ECU) 12 V input against ISO 7637-2 pulse 5a (load dump). IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ECU input filter capacitor. Use Value: Clamps 120 V/350 ms load dump to ≤69.4 V within nanoseconds, preventing damage to upstream LDOs and microcontrollers. | Use Scenario: Safeguarding IGBT gate driver supply on 48 V DC bus of HVAC blower motor controller. IC Role / Device Role / Timing Role: TVS mounted directly at driver IC VDD pin to suppress switching noise and inductive kickback. Use Value: Limits transient overvoltage to <70 V, maintaining gate oxide integrity and avoiding false turn-on of power devices. |
| Telecom Power Feeding Interface | Renewable Energy Charge Controller |
Use Scenario: Shielding PoE-powered network switch DC input from induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary surge clamp on 48 V DC feed line upstream of DC/DC converter. Use Value: Absorbs up to 5 kW surge energy without degradation, preserving converter FETs and feedback optocouplers. | Use Scenario: Overvoltage protection on solar panel input of 24 V lead-acid charge controller exposed to lightning-prone installations. IC Role / Device Role / Timing Role: First-line TVS on PV+ input before MPPT controller IC and shunt regulator. Use Value: Withstands repeated 10/1000 μs surges up to 72 A while maintaining ≤69.4 V clamping, extending electrolytic capacitor life. |
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 | 600 W peak power (vs. 5000 W); SMC package; lower clamping voltage (69.4 V same, but lower IPPM = 8.7 A) | Suitable only for low-energy surges (IEC 61000-4-2 ESD); insufficient for IEC 61000-4-5 or load dump. | Select SMBJ43A only when space-constrained layouts and sub-1 kV surge immunity suffice. |
| 1.5KE43A | 1500 W peak power; DO-201 package; higher clamping voltage (70.1 V at 21.5 A); no AEC-Q101 qualification | Lacks automotive qualification and thermal robustness for sustained surge duty cycles; limited to commercial-grade systems. | Choose 1.5KE43A for cost-sensitive industrial controls where AEC-Q101 is not mandated and surge levels are moderate. |
Compared with SMBJ43A and 1.5KE43A, the 5KP43A-E3/51 delivers 3.3× higher peak power than 1.5KE43A and >8× that of SMBJ43A, enabling single-device compliance with automotive load dump and industrial surge standards-without requiring parallel devices or external heatsinking.
Availability
5KP43A-E3/51 is available at Aetrix Electronics and suitable for automotive ECUs, industrial motor drives, telecom power interfaces, and renewable energy charge controllers requiring stable component supply across extended product lifecycles.
Supply support for 5KP43A-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, and protection devices with emphasis on reliability and automotive-grade qualification.
The 5KP series was engineered specifically for high-power transient suppression in harsh environments-targeting automotive, industrial, and telecom infrastructure applications where failure is not an option.
FAQ
What is the clamping voltage of the 5KP43A-E3/51 under maximum surge conditions?
The 5KP43A-E3/51 clamps to a maximum of 69.4 V when subjected to its rated peak pulse current of 72 A using the standardized 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and forms the basis for system-level overvoltage margin calculations in designs using the 5KP43A-E3/51.
Is the 5KP43A-E3/51 suitable for bidirectional signal line protection?
No-the 5KP43A-E3/51 is a unidirectional TVS diode and must be oriented with cathode toward the protected positive rail. For bidirectional protection (e.g., RS-485, USB, or AC lines), a different device such as a symmetric bipolar TVS or paired unidirectional units would be required instead of the 5KP43A-E3/51.
Does the 5KP43A-E3/51 require a heatsink for continuous operation?
The 5KP43A-E3/51 dissipates up to 8.0 W continuously when mounted on an infinite heatsink at TL = 75 °C (per Fig. 5). In practice, PCB copper area (≥1 in² per lead) serves as sufficient thermal mass for intermittent surge events; however, sustained power dissipation above 1 W requires thermal vias and ground-plane coupling to avoid exceeding the +175 °C junction limit of the 5KP43A-E3/51.
What does the "E3/51" suffix indicate in the 5KP43A-E3/51 part number?
The "E3" denotes RoHS-compliant, commercial-grade construction with JESD 201 Class 1A whisker resistance; "/51" specifies the preferred packaging code-51 indicates 800-piece 13-inch paper tape and reel delivery. This distinguishes the 5KP43A-E3/51 from HE3 variants (AEC-Q101 qualified) or alternate reels like /54.
How does the 5KP43A-E3/51 compare to earlier 1.5KE series TVS diodes in surge handling?
The 5KP43A-E3/51 delivers 5000 W peak pulse power-more than three times the 1500 W rating of the 1.5KE43A-enabling it to absorb larger energy transients without failure. Its P600 package also offers superior thermal mass and lower thermal resistance than the DO-201 package used by the 1.5KE43A, making the 5KP43A-E3/51 better suited for repetitive surge environments.
5KP43A-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):
- 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-E3/51 FAQ
1.How can I place an order for 5KP43A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP43A-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 5KP43A-E3/51 reliable?
The price and inventory of 5KP43A-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 5KP43A-E3/51 is usually 5 days.
3.What payment methods are accepted for 5KP43A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP43A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP43A-E3/51?
5KP43A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP43A-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 5KP43A-E3/51?
For technical support, including 5KP43A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP43A-E3/51 requirements.
6.How does Aetrix verify that 5KP43A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 5KP43A-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 5KP43A-E3/51 meets industry standards.
7.What is the process for return or replacement of 5KP43A-E3/51?
All 5KP43A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP43A-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 5KP43A-E3/51 part is unused and in its original packaging.
Return procedure for 5KP43A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5KP43A-E3/51 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
