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Vishay General Semiconductor - Diodes Division 1.5KA7.5AHE3/73
- Part No.:
- 1.5KA7.5AHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA7.5AHE3/73.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:7,740
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Product details
Overview
1.5KA7.5AHE3/73 from Vishay General Semiconductor is an automotive-grade unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in harsh environments. It features a 7.13 V to 7.88 V breakdown voltage (VBR), 1500 W peak pulse power (10/1000 µs), 133 V clamping voltage at 5000 A, 6.5 W steady-state power dissipation, and AEC-Q101 qualification - deployed on power rails and signal lines of automotive ECUs and sensor interfaces.
For engineers reviewing the 1.5KA7.5AHE3/73 datasheet, 1.5KA7.5AHE3/73 pinout, 1.5KA7.5AHE3/73 application, or 1.5KA7.5AHE3/73 equivalent, key selection criteria include its 133 V clamping performance at 5000 A IPPM, -65 °C to +185 °C operating junction temperature, RoHS-compliant HE3 packaging with JESD201 Class 2 whisker resistance, and unidirectional polarity with cathode band marking.
Technical Context
This TVS diode employs Vishay's patented PAR® construction for stable clamping under repeated surge stress and high-temperature operation up to 185 °C. Its low incremental surge resistance and fast response time ensure effective suppression of transients induced by inductive load switching in automotive 12 V systems.
The device operates exclusively in unidirectional mode, with a defined cathode terminal marked by a color band. It meets AEC-Q101 requirements for automotive reliability and is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine), supporting protection of downstream MOSFETs and ICs against ISO 7637-2 pulses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.13 V / 7.88 V - Ensures reliable triggering above system stand-off voltage (6.40 V) while avoiding false trips during normal operation. |
| VC @ IPPM | 133 V - Clamps 5000 A transient to safe level for protected 12 V electronics (e.g., microcontrollers, CAN transceivers). |
| PPPM | 1500 W - Handles high-energy transients per ISO 7637-2 Pulse 1/2a/5a without degradation. |
| IPPM | 5000 A - Supports robust protection against severe load-dump and inductive kick events. |
| TJ max. | +185 °C - Enables placement near hot components (e.g., power modules, engine control units) without derating loss. |
| Package | Case Style 1.5KA - Axial-leaded, epoxy-molded package with matte tin-plated leads compliant to J-STD-002 and JESD22-B102. |
Pinout & Package
Case Style 1.5KA is an axial-leaded, molded epoxy package with cathode indicated by a color band. Leads are matte tin-plated and solderable per J-STD-002. The device has two terminals: anode and cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to ground or low-side reference in unidirectional TVS configuration | Provides return path during clamping; must be routed with low-inductance connection to minimize voltage overshoot. |
| Cathode | Current exit point in forward bias; marked by color band; connected to protected line (e.g., battery rail, signal line) | Defines polarity - reverse-biased during normal operation; conducts only when transient exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable VBR and low dynamic impedance across temperature and lifetime, critical for automotive AEC-Q101 compliance. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive underhood applications including engine control, body electronics, and ADAS sensor interfaces. |
| 1500 W peak pulse power (10/1000 µs) | Meets ISO 7637-2 Pulse 5a severity levels for 12 V vehicle systems without external heatsinking. |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth in high-humidity, high-temperature environments - essential for long-life automotive modules. |
| RoHS-compliant molding compound (UL 94 V-0) | Ensures flame retardancy and environmental compliance for modern vehicle platforms and Tier 1 supply chains. |
Applications
| Automotive Engine Control Unit (ECU) Power Input Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects 12 V supply input of engine control units against load dump (ISO 7637-2 Pulse 5a) and alternator-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamps transients before they reach DC-DC converters and microcontrollers. Use Value: Maintains system uptime by preventing latch-up or permanent damage to MCU power domains during cold-cranking or battery disconnect events. | Use Scenario: Shields 24 V digital input channels of programmable logic controllers from field-wiring transients and relay coil flyback. IC Role / Device Role / Timing Role: Acts as primary front-end surge limiter on optocoupler input side, absorbing energy before signal conditioning circuitry. Use Value: Extends mean time between failures (MTBF) in factory automation by eliminating false triggering and component degradation from repetitive 1 kV/µs transients. |
| Automotive Body Control Module (BCM) Sensor Interface | Telecom Power Supply DC Bus Protection |
Use Scenario: Safeguards LIN bus and analog sensor inputs (e.g., ambient temperature, rain sensor) from ESD and inductive coupling in door modules and lighting controls. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp placed directly at connector entry point to minimize trace inductance impact. Use Value: Preserves signal integrity and prevents false wake-up or reset events in always-on BCM subsystems operating at -40 °C to +125 °C ambient. | Use Scenario: Protects 48 V DC distribution bus in telecom rectifier cabinets from lightning-induced surges and grid switching transients. IC Role / Device Role / Timing Role: High-power TVS mounted at bus entry point to shunt multi-kA transients away from downstream DC-DC stages and monitoring ICs. Use Value: Achieves >100,000 surge cycles endurance due to PAR® construction, reducing field replacement cost in outdoor base station deployments. |
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 | Lower PPPM (600 W), smaller SMB package, 11.3 V clamping at 43.5 A IPPM | Targeted for lower-energy consumer/industrial applications; not AEC-Q101 qualified | Select when space-constrained PCB layout and cost sensitivity outweigh automotive reliability requirements. |
| 1.5KE7.5A | Same 1500 W rating but TO-204AA (DO-4) package; no HE3 whisker qualification; TJ max = 175 °C | Lacks AEC-Q101 and JESD201 Class 2 compliance; suitable for industrial but not automotive production | Choose only for legacy industrial designs where lead finish and extended temperature margin are non-critical. |
Compared with SMBJ7.5A and 1.5KE7.5A, the 1.5KA7.5AHE3/73 delivers higher temperature resilience (+185 °C vs. +175 °C), automotive-qualified reliability, and superior surge current handling per unit volume - making it the sole option for new AEC-Q101-compliant vehicle programs requiring long-term supply stability.
Availability
1.5KA7.5AHE3/73 is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC input protection, and telecom DC bus hardening requiring stable component supply across multi-year production cycles.
Supply support for 1.5KA7.5AHE3/73 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5KA series is engineered specifically for automotive transient suppression, combining PAR® technology, AEC-Q101 validation, and high-temperature capability to meet stringent OEM requirements for under-hood and chassis-mounted electronics.
FAQ
What is the clamping voltage of the 1.5KA7.5AHE3/73 at its rated peak pulse current?
The 1.5KA7.5AHE3/73 has a maximum clamping voltage (VC) of 133 V at 5000 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream 12 V electronics remain within safe operating limits during severe transients such as ISO 7637-2 Pulse 5a. The 1.5KA7.5AHE3/73 achieves this with low dynamic impedance enabled by its PAR® construction.
Is the 1.5KA7.5AHE3/73 suitable for automotive applications?
Yes, the 1.5KA7.5AHE3/73 is AEC-Q101 qualified and designated as an automotive-grade part (HE3 suffix). It supports operating junction temperatures from -65 °C to +185 °C, passes JESD201 Class 2 whisker testing, and is built in a RoHS-compliant package meeting UL 94 V-0 flammability standards - all verified per Vishay Document Number 88300. The 1.5KA7.5AHE3/73 is routinely used in engine control units, body control modules, and ADAS sensor interfaces.
What does the "HE3" suffix signify in 1.5KA7.5AHE3/73?
The "HE3" suffix in 1.5KA7.5AHE3/73 indicates a high-reliability, RoHS-compliant version qualified to AEC-Q101 for automotive use. It specifies matte tin-plated leads compliant with J-STD-002 and JESD22-B102, and passes JESD201 Class 2 whisker resistance testing - critical for long-term reliability in high-humidity, high-temperature under-hood environments. The 1.5KA7.5AHE3/73 is distinct from non-HE3 variants in process control and screening rigor.
How does the 1.5KA7.5AHE3/73 differ from the standard 1.5KA7.5A?
The 1.5KA7.5AHE3/73 adds the HE3 qualification - meaning it meets AEC-Q101, JESD201 Class 2 whisker resistance, and enhanced process controls - whereas the base 1.5KA7.5A lacks these automotive-specific validations. Both share identical electrical specs (VBR, VC, PPPM), but only the 1.5KA7.5AHE3/73 is approved for production automotive applications. The 1.5KA7.5AHE3/73 also uses UL 94 V-0 molding compound and is supplied in 13" paper tape and reel (package code 73).
What is the standoff voltage (VWM) and leakage current of the 1.5KA7.5AHE3/73 at 25 °C?
The 1.5KA7.5AHE3/73 has a maximum standoff voltage (VWM) of 6.40 V and a maximum reverse leakage current (ID) of 500 µA at VWM and TA = 25 °C. At elevated temperature (TJ = 150 °C), leakage remains ≤5000 µA - confirming stable blocking behavior across automotive operating ranges. These values ensure minimal quiescent power loss and prevent false triggering in 5–6 V logic-supplied circuits interfacing with the 1.5KA7.5AHE3/73.
1.5KA7.5AHE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- PAR®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 133A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KA
1.5KA7.5AHE3/73 FAQ
1.How can I place an order for 1.5KA7.5AHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA7.5AHE3/73 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 1.5KA7.5AHE3/73 reliable?
The price and inventory of 1.5KA7.5AHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA7.5AHE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KA7.5AHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA7.5AHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA7.5AHE3/73?
1.5KA7.5AHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA7.5AHE3/73 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 1.5KA7.5AHE3/73?
For technical support, including 1.5KA7.5AHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA7.5AHE3/73 requirements.
6.How does Aetrix verify that 1.5KA7.5AHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KA7.5AHE3/73 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 1.5KA7.5AHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KA7.5AHE3/73?
All 1.5KA7.5AHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA7.5AHE3/73, 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 1.5KA7.5AHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KA7.5AHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA7.5AHE3/73 Tags
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