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Vishay General Semiconductor - Diodes Division 1.5KE110HE3/73
- Part No.:
- 1.5KE110HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE110HE3/73.pdf
- Description:
- TVS DIODE 89.2VWM 158VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,100
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Product details
Overview
1.5KE110HE3/73 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a 105 V to 116 V breakdown voltage range at 1 mA, 94.0 V maximum standoff voltage, 152 V clamping voltage at 9.9 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 µs waveform - deployed in automotive power supply inputs, industrial PLC I/O modules, and telecom line interface circuits.
For engineers reviewing the 1.5KE110HE3/73 datasheet, 1.5KE110HE3/73 pinout, 1.5KE110HE3/73 application, or 1.5KE110HE3/73 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance data, JEDEC 1.5KE package dimensions, and real-world clamping performance under standardized surge conditions - critical for ESD/lightning transient design validation and BOM selection.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) and low incremental surge resistance. Its unidirectional polarity enables cathode-referenced clamping on positive transients, with a 175 °C maximum junction temperature and thermal resistance of 15.4 °C/W (junction-to-lead), supporting reliable operation under repetitive surge stress in high-temperature environments.
The device complies with JEDEC standard 1.5KE case style, meets UL 94 V-0 flammability rating, and is RoHS compliant with JESD 201 Class 2 whisker resistance (HE3 suffix). It is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits 0.107 %/°C temperature coefficient of breakdown voltage - enabling stable clamping across automotive-grade thermal ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 105 V to 116 V at 1 mA - defines minimum voltage at which clamping initiates; ensures reliable turn-on before downstream IC damage. |
| Standoff Voltage (VWM) | 94.0 V maximum - sets maximum continuous operating voltage without leakage; compatible with 72–90 V nominal DC bus systems. |
| Clamping Voltage (VC) | 152 V at 9.9 A (10/1000 µs) - actual voltage seen by protected circuit during worst-case surge; limits stress on 150 V-rated components. |
| Peak Pulse Power (PPPM) | 1500 W - energy-handling capacity for 1 ms surges; sufficient for IEC 61000-4-5 Level 4 (4 kV/2 Ω) line surges. |
| Leakage Current (ID) | 1.0 µA max at VWM - negligible standby power loss; avoids loading of high-impedance sensor or reference circuits. |
| Junction Temperature Range | –55 °C to +175 °C - supports under-hood automotive, industrial motor drives, and outdoor telecom equipment. |
| Thermal Resistance (RθJL) | 15.4 °C/W - enables direct PCB copper pour heatsinking; allows >6 W continuous dissipation with minimal lead temperature rise. |
Pinout & Package
Package: JEDEC 1.5KE molded epoxy case (Case Style 1.5KE), axial-leaded, RoHS-compliant matte tin-plated leads. Dimensions: 5.3 mm diameter × 9.5 mm length (0.210" × 0.375"), with 1.07 mm lead diameter.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage rail; forms cathode-to-rail clamping path for positive transients. |
| Cathode | High-side surge input terminal | Marked with color band; connects to protected line; conducts surge current to ground when VIN exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance and long-term reliability under humidity and thermal cycling stress. |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress test requirements (HTSL, TC, H3TRB). |
| 1500 W 10/1000 µs pulse rating | Supports IEC 61000-4-5 surge immunity up to 4 kV open-circuit voltage in 2 Ω source impedance configurations. |
| 0.107 %/°C VBR tempco | Ensures predictable clamping threshold shift across –40 °C to +125 °C ambient, critical for wide-temperature designs. |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth under high-humidity, high-temperature storage - essential for long-life industrial deployments. |
Applications
| Automotive Power Input Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs against load dump (ISO 16750-2) and alternator ripple-induced transients. IC Role / Device Role / Timing Role: Primary clamping element placed between power rail and ground, responding within <1 ns to limit voltage to ≤152 V during 100 A surges. Use Value: Prevents latch-up or gate oxide rupture in MCU power management ICs and CAN transceivers exposed to 120 V/200 ms load dump events. |
Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional shunt clamp on input side of optocoupler or Schmitt trigger, absorbing 1 kV/0.5 A transients per IEC 61000-4-4. Use Value: Eliminates false triggering and component degradation in isolated input stages, extending mean time between failures in factory automation systems. |
| Telecom Line Interface Protection | DC Power Supply Output Clamping |
Use Scenario: Safeguarding Ethernet PHY or RS-485 transceivers connected to outdoor cabling subject to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), clamping differential-mode transients on data pair lines. Use Value: Limits transient overshoot to <152 V while maintaining <1 pF junction capacitance - preserving signal integrity up to 100 Mbps. |
Use Scenario: Post-regulator clamping on 48 V DC-DC converter outputs feeding sensitive RF front-end modules. IC Role / Device Role / Timing Role: Final-stage overvoltage limiter placed directly at output capacitor, activated only during fault conditions (e.g., feedback loop failure). Use Value: Restricts output excursion to 152 V during 1500 W surge events, preventing catastrophic failure of GaN FETs or LNA ICs rated for 160 V absolute maximum. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110A-E3/52 | Lower PPPM (600 W), smaller SMB package (3.6 mm × 4.5 mm), higher VC (187 V at 3.2 A) | Better suited for space-constrained PCBs with lower-energy transients (IEC 61000-4-5 Level 2); not AEC-Q101 qualified | Select when board area is limited and surge energy does not exceed 600 W; verify thermal margin with RθJA = 110 °C/W. |
| 1.5KE110A-E3/54 | Same electrical specs but commercial-grade (non-AEC-Q101), E3 suffix only (JESD 201 Class 1A whisker test) | Acceptable for consumer or industrial non-automotive use; lacks automotive qualification documentation and extended reliability testing | Choose for cost-sensitive non-automotive applications where AEC-Q101 is not mandated; identical clamping and thermal behavior. |
Compared with 1.5KE110HE3/73, SMBJ110A-E3/52 offers footprint reduction at the expense of surge energy handling and automotive qualification, while 1.5KE110A-E3/54 provides identical protection performance without AEC-Q101 validation - making the HE3/73 the sole option for production automotive designs requiring certified reliability.
Availability
1.5KE110HE3/73 is available at Aetrix Electronics and suitable for automotive ECU power inputs, industrial PLC I/O modules, telecom line interfaces, and DC-DC converter output clamping requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE110HE3/73 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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where robustness against lightning, load dump, and ESD is non-negotiable.
FAQ
What is the clamping voltage of the 1.5KE110HE3/73 under a 10/1000 µs surge?
The 1.5KE110HE3/73 clamps to a maximum of 152 V at 9.9 A peak pulse current when subjected to a 10/1000 µs waveform. This value is measured per JEDEC standards and represents the upper voltage limit imposed on the protected circuit during worst-case transient events - critical for ensuring compatibility with 150 V-rated downstream components. The 152 V clamping is guaranteed across the full operating temperature range.
Is the 1.5KE110HE3/73 qualified for automotive applications?
Yes, the 1.5KE110HE3/73 is AEC-Q101 qualified, as confirmed in Vishay's official documentation (Document Number 88301, Revision 09-Aug-2022). This qualification covers high-temperature operating life, temperature cycling, and humidity testing - validating its suitability for under-hood and chassis-mounted automotive electronics including engine control units, body control modules, and ADAS power supplies.
What is the standoff voltage rating for the 1.5KE110HE3/73?
The 1.5KE110HE3/73 has a maximum standoff voltage (VWM) of 94.0 V, meaning it remains in high-impedance state and draws less than 1.0 µA leakage current up to this DC or RMS voltage. This makes it appropriate for 72–90 V nominal systems such as 24 V automotive buses with ±20 % regulation tolerance or industrial 48 V DC distribution networks.
How does the thermal resistance of the 1.5KE110HE3/73 affect PCB layout?
The 1.5KE110HE3/73 has a junction-to-lead thermal resistance (RθJL) of 15.4 °C/W, indicating efficient heat transfer from die to leads. For optimal thermal performance, designers should use ≥10 mm² of 2 oz copper connected to both leads - enabling sustained 6.5 W power dissipation without exceeding 175 °C junction temperature. Minimal copper pour is required compared to higher-RθJL alternatives.
Does the 1.5KE110HE3/73 have bidirectional capability?
No, the 1.5KE110HE3/73 is a unidirectional TVS diode. Its polarity is defined by a cathode band, and it clamps only positive transients relative to ground. Bidirectional variants (e.g., 1.5KE110CA) exist in the same family but are distinct part numbers - the HE3/73 suffix applies exclusively to unidirectional, AEC-Q101-qualified versions.
1.5KE110HE3/73 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):
- 89.2V
- Voltage - Breakdown (Min):
- 99V
- Voltage - Clamping (Max) @ Ipp:
- 158V
- Current - Peak Pulse (10/1000µs):
- 9.5A
- 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
1.5KE110HE3/73 FAQ
1.How can I place an order for 1.5KE110HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE110HE3/73 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 1.5KE110HE3/73 reliable?
The price and inventory of 1.5KE110HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE110HE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE110HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE110HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE110HE3/73?
1.5KE110HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE110HE3/73 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 1.5KE110HE3/73?
For technical support, including 1.5KE110HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE110HE3/73 requirements.
6.How does Aetrix verify that 1.5KE110HE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE110HE3/73 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 1.5KE110HE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE110HE3/73?
All 1.5KE110HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE110HE3/73, 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 1.5KE110HE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE110HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE110HE3/73 Tags
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