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Vishay General Semiconductor - Diodes Division 5KP7.5A-E3/73
- Part No.:
- 5KP7.5A-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP7.5A-E3/73.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:6,657
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Product details
Overview
5KP7.5A-E3/73 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It features a 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 5.0 mA, 12.9 V clamping voltage (VC) at 388 A peak pulse current (IPPM), and 5000 W peak pulse power (10/1000 μs waveform). It is widely deployed in automotive power supply inputs and industrial sensor interfaces to prevent damage from inductive switching transients.
For engineers reviewing the 5KP7.5A-E3/73 datasheet, 5KP7.5A-E3/73 pinout, 5KP7.5A-E3/73 application, or 5KP7.5A-E3/73 equivalent, this page delivers verified electrical specs, P600 package dimensions, clamping behavior under surge conditions, thermal derating curves, and RoHS-compliant AEC-Q101-qualified alternatives - all critical for overvoltage protection design validation and BOM selection.
Technical Context
The 5KP7.5A-E3/73 employs a glass-passivated P600 package with a unidirectional junction optimized for fast response (<1 ns) and low incremental surge resistance. Its 12.9 V clamping voltage at 388 A ensures robust protection of downstream MOSFETs and ICs during 10/1000 μs surges without latch-up or thermal runaway.
It operates across –55 °C to +175 °C junction temperature range and supports repetitive surge duty cycles up to 0.01 %, with 8.0 W steady-state power dissipation on an infinite heatsink at TL = 75 °C. The device meets JESD 22-B106 solderability (275 °C, 10 s) and JESD 201 Class 1A whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 7.5 V - Maximum continuous reverse voltage before significant leakage; sets operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 8.33–9.21 V at 5.0 mA - Confirmed avalanche onset range; defines minimum trigger point for transient suppression. |
| VC (Clamping Voltage) | 12.9 V at IPPM = 388 A - Peak voltage seen by protected circuit during full-rated 5000 W surge; determines safe stress level for downstream components. |
| PPPM (Peak Pulse Power) | 5000 W (10/1000 μs) - Energy-handling capacity for standardized lightning/surge waveforms; enables single-event protection without failure. |
| ID (Reverse Leakage) | 250 μA max at VWM - Low standby current preserves efficiency in always-on power rails and battery-backed systems. |
| TJ max | +175 °C - Enables use in under-hood automotive environments and high-temperature industrial enclosures without derating penalties. |
| Polarity | Unidirectional - Cathode marked by color band; suitable for DC-biased protection only, not AC line applications. |
Pinout & Package
5KP7.5A-E3/73 uses the P600 axial-leaded package: molded epoxy body over passivated junction, UL 94 V-0 rated, with matte tin-plated leads. Dimensions: 9.5 mm length × 9.1 mm diameter, lead spacing 9.1 mm, lead diameter 1.32 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection to ground or return path | Completes conduction path during reverse-biased surge; must be routed with low-inductance grounding for effective clamping. |
| Cathode | High-side connection to protected line (marked by color band) | Receives transient energy; connects to input rail or signal line requiring protection; polarity-sensitive installation required. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - supports under-hood ECU and ADAS module designs. |
| 5000 W peak pulse rating (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-ground) without degradation - eliminates need for multi-stage protection in many 12 V/24 V systems. |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes overvoltage overshoot during fast transients - protects sensitive gate oxides in MOSFET drivers and microcontroller I/O pins. |
| RoHS-compliant & whisker-tested (JESD 201 Class 1A) | Ensures long-term solder joint integrity in reflow and thermal cycling environments - critical for industrial control and telecom infrastructure. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery-fed infotainment head unit exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Primary TVS clamp on main DC input rail, placed upstream of DC/DC converter and LDOs. Use Value: Limits transient voltage to ≤12.9 V during 388 A surge, preventing latch-up or burnout in PMICs and SoCs while maintaining system reset capability. |
Use Scenario: 4–20 mA current loop sensor in factory automation subjected to ESD and cable coupling noise. IC Role / Device Role / Timing Role: Bidirectional protection (with series resistor) on analog input side of signal conditioner IC. Use Value: Clamps induced spikes to <13 V within nanoseconds, preserving ADC reference stability and avoiding false readings or firmware resets. |
| Switching Power Supply Output Clamp | Telecom DC Feeder Protection |
Use Scenario: 48 V output of isolated flyback converter powering remote radio units, subject to back-EMF from relay coils and hot-swap events. IC Role / Device Role / Timing Role: Crowbar-replacement TVS across output capacitor bank to absorb stored inductive energy. Use Value: Absorbs up to 5000 W surge without short-circuit failure, allowing fuse coordination and enabling system recovery after fault clearance. |
Use Scenario: -48 V DC feeder line in central office equipment exposed to lightning-induced surges on outdoor copper pairs. IC Role / Device Role / Timing Role: First-stage shunt protector on power entry board before DC-DC conversion and line card distribution. Use Value: Delivers 12.9 V clamping at 388 A with <1 ns response, reducing let-through energy to levels compatible with secondary MOV and GDT stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5A-E3/52 | Lower PPPM (600 W), smaller SMB package (3.5 mm × 4.5 mm), same VWM/VBR/VC ratings. | Targeted at space-constrained PCBs with lower surge exposure (e.g., USB ports, low-power sensors); insufficient for ISO 7637-2 compliance. | Select when board area is critical and surge threat is limited to IEC 61000-4-2/4-4; avoid for automotive power rail or industrial mains-connected circuits. |
| 5KP7.5CA-E3/73 | Bidirectional variant with identical VWM (7.5 V), symmetric clamping (±12.9 V), same P600 package and 5000 W rating. | Required for AC-coupled or floating signal lines (e.g., RS-485, CAN bus stubs) where polarity reversal may occur. | Choose only if bidirectional protection is mandated; unidirectional 5KP7.5A-E3/73 offers lower cost and simpler layout for DC-biased rails. |
Compared with SMBJ7.5A-E3/52, the 5KP7.5A-E3/73 provides 8.3× higher surge energy handling in the same functional voltage class; compared with 5KP7.5CA-E3/73, it reduces component count and layout complexity for strictly DC applications while maintaining identical clamping performance and thermal robustness.
Availability
5KP7.5A-E3/73 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, switching power supply outputs, and telecom DC feeder protection requiring stable component supply and AEC-Q101-qualified surge resilience.
Supply support for 5KP7.5A-E3/73 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, 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 harsh-environment DC power systems - targeting replacement of crowbar circuits and enabling fuse-coordinated overvoltage protection in automotive, industrial, and telecom infrastructure.
FAQ
What is the maximum clamping voltage of the 5KP7.5A-E3/73 under full-rated surge conditions?
The 5KP7.5A-E3/73 has a maximum clamping voltage (VC) of 12.9 V when subjected to its rated peak pulse current of 388 A (10/1000 μs waveform). This value is measured per JEDEC standards and guarantees that protected downstream components will not experience voltage stress beyond this threshold during standardized surge events. The 12.9 V clamping level is confirmed in the Vishay datasheet Document Number 88308, Table "ELECTRICAL CHARACTERISTICS" for 5KP7.5A.
Is the 5KP7.5A-E3/73 suitable for automotive applications?
Yes, the 5KP7.5A-E3/73 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its –55 °C to +175 °C operating junction temperature range, robust P600 package, and validated surge endurance make it appropriate for protecting ECUs, ADAS modules, and infotainment systems against load dump and ISO 7637-2 transients. The "HE3" suffix denotes AEC-Q101 qualification, but the "E3/73" variant is RoHS-compliant and commercially qualified - both share identical electrical specs and mechanical construction.
How does the 5KP7.5A-E3/73 differ from the 5KP7.5CA-E3/73?
The 5KP7.5A-E3/73 is unidirectional, while the 5KP7.5CA-E3/73 is bidirectional - meaning the latter clamps in both polarities with symmetrical VWM (±7.5 V) and VC (±12.9 V). Both share identical P600 packaging, 5000 W peak pulse power, and thermal ratings. The unidirectional 5KP7.5A-E3/73 is intended for DC-biased rails (e.g., 12 V battery inputs), whereas the CA version suits AC-coupled or floating lines like RS-485 or CAN bus stubs where polarity reversal can occur.
What is the reverse leakage current specification for the 5KP7.5A-E3/73 at its stand-off voltage?
The 5KP7.5A-E3/73 exhibits a maximum reverse leakage current (ID) of 250 μA at its rated stand-off voltage (VWM) of 7.5 V and TA = 25 °C. This low leakage ensures minimal power loss in always-on systems and avoids unintended biasing of downstream circuitry. The value is specified in the "ELECTRICAL CHARACTERISTICS" table of the Vishay datasheet 88308 and remains stable across industrial temperature ranges due to the device's low temperature coefficient of VBR (0.073 %/°C).
Can the 5KP7.5A-E3/73 replace a crowbar circuit in power supply design?
Yes - the 5KP7.5A-E3/73 was explicitly designed to replace traditional crowbar circuits in switching power supplies, as noted in Vishay's Application Notes. It absorbs high-energy transients (up to 5000 W) without shorting permanently, allowing time for fuses or breakers to clear the fault while preserving system functionality. Unlike SCR-based crowbars, the 5KP7.5A-E3/73 requires no external trigger circuitry and resets automatically after the surge, simplifying design and improving reliability in 12 V/24 V/48 V DC systems.
5KP7.5A-E3/73 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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 388A
- 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
5KP7.5A-E3/73 FAQ
1.How can I place an order for 5KP7.5A-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP7.5A-E3/73 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 5KP7.5A-E3/73 reliable?
The price and inventory of 5KP7.5A-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP7.5A-E3/73 is usually 5 days.
3.What payment methods are accepted for 5KP7.5A-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP7.5A-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP7.5A-E3/73?
5KP7.5A-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP7.5A-E3/73 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 5KP7.5A-E3/73?
For technical support, including 5KP7.5A-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP7.5A-E3/73 requirements.
6.How does Aetrix verify that 5KP7.5A-E3/73 is sourced from the original manufacturer or authorized distributors?
All 5KP7.5A-E3/73 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 5KP7.5A-E3/73 meets industry standards.
7.What is the process for return or replacement of 5KP7.5A-E3/73?
All 5KP7.5A-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP7.5A-E3/73, 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 5KP7.5A-E3/73 part is unused and in its original packaging.
Return procedure for 5KP7.5A-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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