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Vishay General Semiconductor - Diodes Division 1.5KE7.5HE3/73
- Part No.:
- 1.5KE7.5HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE7.5HE3/73.pdf
- Description:
- TVS DIODE 6.05VWM 11.7VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,962
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Product details
Overview
1.5KE7.5HE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection of sensitive electronics. It features a 7.13 V to 7.88 V breakdown voltage (VBR) at 10 mA, 6.40 V maximum standoff voltage (VWM), 11.3 V clamping voltage (VC) at 133 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used in DC power rail and signal line protection for automotive ECUs and industrial sensor interfaces.
For engineers reviewing the 1.5KE7.5HE3/73 datasheet, 1.5KE7.5HE3/73 pinout, 1.5KE7.5HE3/73 application, or 1.5KE7.5HE3/73 equivalent, this device delivers verified AEC-Q101 qualification, low incremental surge resistance, glass passivated junction, and RoHS-compliant matte tin-plated leads - critical for high-reliability transient suppression in harsh-environment designs.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector, responding in <1 ns to transients induced by inductive switching or ESD events. Its silicon junction is glass passivated for stable leakage performance and robust surge handling, with thermal resistance of 15.4 °C/W (junction-to-lead) enabling effective power dissipation during repetitive 10/1000 µs pulses.
The 1.5KE7.5HE3/73 is rated for -55 °C to +175 °C operating junction temperature and supports 200 A non-repetitive forward surge current (8.3 ms half-sine). Its 0.061 %/°C VBR temperature coefficient ensures predictable clamping behavior across automotive and industrial thermal profiles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.13 V / 7.88 V at 10 mA - defines precise voltage threshold where clamping initiates under standardized test conditions |
| VWM | 6.40 V - maximum continuous reverse working voltage before leakage exceeds 500 µA |
| VC @ IPPM | 11.3 V at 133 A - clamped voltage seen by protected circuit during full 1500 W transient event |
| PPPM | 1500 W - peak pulse power handling capability with 10/1000 µs waveform, duty cycle ≤ 0.01 % |
| IFSM | 200 A - single half-sine surge current rating (8.3 ms), critical for relay/coil turn-off protection |
| TJ max. | +175 °C - enables operation in under-hood automotive or high-temperature industrial enclosures |
| Leakage @ VWM | 500 µA - low reverse leakage preserves system standby power integrity |
Pinout & Package
Package: Case Style 1.5KE - axial-leaded DO-201AD molded epoxy package with matte tin-plated leads, UL 94 V-0 rated, 0.375" (9.5 mm) lead length standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to ground or lower-potential node in unidirectional clamp configuration |
| Cathode | Current exit point in forward bias; marked with color band | Connected to protected line (e.g., 5 V rail or CAN_H); conducts surge current to ground when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable VBR tolerance and low long-term parameter drift under thermal cycling |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| 1500 W peak pulse power (10/1000 µs) | Provides robust protection against ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 surge events |
| Very fast response time (<1 ns) | Clamps transients before downstream ICs experience damaging overvoltage stress |
| Low incremental surge resistance | Minimizes VC overshoot during high di/dt events, improving protection margin for 5 V logic |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 5 V microcontroller supply rails in vehicle body control modules exposed to load dump and alternator ripple. IC Role / Device Role: Unidirectional shunt TVS placed between VCC and GND, triggered only on positive overvoltage events. Use Value: Clamps 133 A surge to 11.3 V within nanoseconds, preventing latch-up or gate oxide damage in MCU power pins. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA transmitter) from ESD and field-wiring faults in factory automation systems. IC Role / Device Role: Series-connected TVS on signal path with series resistor, limiting fault current into precision DAC or op-amp inputs. Use Value: Maintains <500 µA leakage at 6.4 V, avoiding offset errors in µA-level current loops while surviving 8 kV contact ESD. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters for smart home hubs, guarding against transformer regulation failure. IC Role / Device Role: Primary clamping element on regulated 5 V/12 V output, coordinated with fuse and current-limiting resistor. Use Value: Withstands 200 A 8.3 ms surge without degradation, ensuring adapter remains functional after repeated overvoltage incidents. | Use Scenario: Front-end protection for Ethernet PHY power pins (e.g., 3.3 V bias) in network switches subjected to lightning-induced surges on PoE lines. IC Role / Device Role: Standoff-rated TVS on DC bias rail, selected for tight VBR tolerance (±5 %) to avoid false triggering during normal PoE negotiation. Use Value: 7.13–7.88 V VBR range ensures reliable clamping above 3.3 V rail noise but below 10 V absolute maximum ratings of PHY ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A | Lower PPPM (600 W), smaller SMB package (surface-mount), 7.0 V nominal VBR | Not AEC-Q101 qualified; suited for space-constrained consumer PCBs, not under-hood automotive | Select when board area is limited and surge requirements are ≤600 W; verify thermal pad layout for 6.5 W dissipation. |
| 1.5KE7.5A-E3/54 | Same electrical specs and DO-201AD package, but commercial-grade (non-AEC-Q101), different packaging format (tape-and-reel vs. bulk/73) | Lacks automotive qualification; acceptable for industrial/commercial power supplies with lower reliability demands | Choose for cost-sensitive non-automotive designs where AEC-Q101 is not mandated and tape-and-reel delivery is preferred. |
Compared with SMBJ7.0A and 1.5KE7.5A-E3/54, the 1.5KE7.5HE3/73 uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and axial-leaded through-hole mounting - making it the only option among the three validated for high-energy, high-reliability automotive power rail protection.
Availability
1.5KE7.5HE3/73 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor transmitters, and telecom line card power protection requiring stable component supply across extended production lifecycles.
Supply support for 1.5KE7.5HE3/73 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 1.5KE series was engineered specifically for high-energy transient suppression in demanding environments, emphasizing AEC-Q101 compliance, stable clamping performance, and robust thermal design for under-hood and factory-floor deployment.
FAQ
What is the exact breakdown voltage range of the 1.5KE7.5HE3/73?
The 1.5KE7.5HE3/73 has a guaranteed breakdown voltage (VBR) range of 7.13 V to 7.88 V at a test current of 10 mA, measured per JEDEC standard. This tight tolerance ensures consistent clamping initiation across production lots and supports reliable design margins in 5 V and 12 V systems. The 1.5KE7.5HE3/73 achieves this specification using a glass-passivated silicon junction with controlled doping and metallization.
Is the 1.5KE7.5HE3/73 qualified for automotive applications?
Yes, the 1.5KE7.5HE3/73 is AEC-Q101 qualified, as confirmed by Vishay's documentation for the HE3 suffix variant. This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD robustness - validating its use in engine control units, body electronics, and ADAS sensor modules. The 1.5KE7.5HE3/73 meets all requirements for automotive-grade transient suppression per SAE J1113 and ISO 16750.
What is the clamping voltage of the 1.5KE7.5HE3/73 at its rated peak pulse current?
The 1.5KE7.5HE3/73 exhibits a maximum clamping voltage (VC) of 11.3 V at its rated peak pulse current (IPPM) of 133 A, tested with a 10/1000 µs waveform. This value represents the worst-case voltage imposed on the protected circuit during a full 1500 W transient event. The 1.5KE7.5HE3/73 maintains this clamping performance across its full operating temperature range (-55 °C to +175 °C).
Does the 1.5KE7.5HE3/73 have a bidirectional version?
No, the 1.5KE7.5HE3/73 is strictly unidirectional. Bidirectional variants in the same voltage class use the "CA" suffix (e.g., 1.5KE7.5CA), and the HE3 qualification applies only to unidirectional types from 1.5KE6.8AHE3_B through 1.5KE220AHE3_B. The 1.5KE7.5HE3/73 features a cathode band marking and must be oriented correctly in-circuit to protect against positive transients only.
What packaging format does the 1.5KE7.5HE3/73 use?
The 1.5KE7.5HE3/73 is supplied in bulk packaging designated by the "/73" suffix, indicating a 73-piece bulk pack. It uses the DO-201AD case style (Case Style 1.5KE) with 0.375" (9.5 mm) lead length, matte tin-plated leads compliant with J-STD-002, and meets JESD 201 Class 2 whisker resistance. This differs from tape-and-reel formats like "/54" (1400 pcs/reel).
1.5KE7.5HE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.05V
- Voltage - Breakdown (Min):
- 6.75V
- Voltage - Clamping (Max) @ Ipp:
- 11.7V
- Current - Peak Pulse (10/1000µs):
- 128A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE7.5HE3/73 FAQ
1.How can I place an order for 1.5KE7.5HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE7.5HE3/73 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 1.5KE7.5HE3/73 reliable?
The price and inventory of 1.5KE7.5HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE7.5HE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE7.5HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE7.5HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE7.5HE3/73?
1.5KE7.5HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE7.5HE3/73 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 1.5KE7.5HE3/73?
For technical support, including 1.5KE7.5HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE7.5HE3/73 requirements.
6.How does Aetrix verify that 1.5KE7.5HE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE7.5HE3/73 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 1.5KE7.5HE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE7.5HE3/73?
All 1.5KE7.5HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE7.5HE3/73, 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 1.5KE7.5HE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE7.5HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE7.5HE3/73 Tags
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