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Vishay General Semiconductor - Diodes Division 1.5KE150A-E3/73
- Part No.:
- 1.5KE150A-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE150A-E3/73.pdf
- Description:
- TVS DIODE 128VWM 207VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,949
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Product details
Overview
1.5KE150A-E3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 1500 W peak pulse power rating (10/1000 µs), 143 V minimum breakdown voltage (VBR), 128 V maximum standoff voltage (VWM), 207 V clamping voltage at peak current, and operates across -55 °C to +175 °C junction temperature range - deployed in automotive power supply rails and industrial sensor interfaces.
For engineers reviewing the 1.5KE150A-E3/73 datasheet, 1.5KE150A-E3/73 pinout, 1.5KE150A-E3/73 application, or 1.5KE150A-E3/73 equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, RoHS-compliant packaging details, and AEC-Q101 qualification status where applicable.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its clamping action limits induced surges - such as those from inductive load switching or lightning-induced transients - to ≤207 V at 7.2 A peak pulse current (IPPM), while maintaining <1 μA reverse leakage at 128 V standoff.
The device adheres to JEDEC-standard 1.5KE case style with axial leads, supports soldering per J-STD-002, and meets UL 94 V-0 flammability requirements. Thermal resistance from junction to lead is 15.4 °C/W, enabling effective heat dissipation in high-reliability PCB layouts without heatsinking under pulsed conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 143 V / 158 V - ensures reliable triggering above normal operating voltage while avoiding false clamping during transients near nominal rail levels |
| VWM | 128 V - maximum continuous reverse working voltage compatible with 125 V DC systems including automotive battery-supplied circuits |
| VC @ IPPM | 207 V - clamping voltage at 7.2 A peak pulse defines worst-case protected node voltage during 10/1000 µs surge events |
| PPPM | 1500 W - peak pulse power handling capability enables protection against high-energy transients per ISO 7637-2 Pulse 5a/b |
| IPPM | 7.2 A - peak pulse current capacity derived from 10/1000 µs waveform, critical for sizing series impedance in protection networks |
| TJ max. | +175 °C - extended junction temperature rating supports operation in under-hood automotive and industrial motor drive environments |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance allows efficient heat transfer to PCB copper or chassis mounting points |
Pinout & Package
Package: Axial-leaded DO-201AD (Case Style 1.5KE), molded epoxy body with matte tin-plated leads; RoHS compliant (E3 suffix), commercial grade.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected circuit; conducts during forward surge events (e.g., reverse polarity faults) |
| Cathode | Reverse-biased clamping terminal | Marked with color band; connected to higher-potential rail (e.g., +12 V, +24 V); initiates avalanche breakdown during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable breakdown characteristics and long-term reliability under repeated surge stress without parameter drift |
| 1500 W peak pulse power (10/1000 µs) | Supports compliance with IEC 61000-4-5 Level 4 (4 kV line-to-line) when used with appropriate series impedance |
| Clamping voltage ≤207 V at 7.2 A | Provides defined overvoltage ceiling for downstream ICs rated to 220 V absolute maximum, preventing latch-up or gate oxide damage |
| Operating TJ up to +175 °C | Enables placement near heat sources (e.g., power MOSFETs, transformers) without thermal derating penalties in pulsed operation |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for industrial control panels and automotive ECUs subject to safety certification |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator overshoot transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp positive-going surges before they reach voltage regulators and microcontrollers. Use Value: Limits transient voltage to ≤207 V, preserving integrity of 28 V-rated LDOs and CAN transceivers without requiring additional filtering stages. | Use Scenario: Shielding analog front-end inputs of pressure/temperature sensors in factory automation equipment exposed to relay coil flyback. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to absorb inductive kickback before it propagates into precision ADC input stages. Use Value: Sub-nanosecond response prevents >100 ns overvoltage spikes from saturating op-amps or damaging SAR ADC reference inputs. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding Ethernet PHY power supplies and bias rails on telecom line cards subjected to lightning-induced surges on nearby AC mains. IC Role / Device Role / Timing Role: Primary-level TVS on 3.3 V/5 V auxiliary rails to suppress coupled transients entering via shared power distribution networks. Use Value: 128 V VWM allows use on intermediate bus rails while 207 V VC ensures downstream DC/DC converters remain within safe operating area. | Use Scenario: Protecting gate drivers and bootstrap circuits in BLDC motor inverters inside washing machines and HVAC systems. IC Role / Device Role / Timing Role: Clamping diode across high-side driver supply to suppress Miller-induced voltage spikes during fast IGBT/MOSFET switching. Use Value: Withstands repetitive 7.2 A pulses at 0.01% duty cycle, matching typical motor commutation frequency profiles without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A | DO-214AA package (SMB), 1.5 kW rating, 143–158 V VBR, but lower IPPM (6.5 A) and higher VC (219 V) | Surface-mount alternative suitable for space-constrained designs; less effective clamping margin than 1.5KE150A-E3/73 | Select SMBJ150A only when board real estate prohibits axial components and system-level testing confirms 219 V clamping is acceptable. |
| 1.5KE150CA | Bidirectional variant (1.5KE150CA) with same VBR/VC specs but symmetrical clamping for AC-coupled or floating signal lines | Required for differential data lines (e.g., RS-485, CAN FD) where both polarities must be suppressed | Choose 1.5KE150CA instead of 1.5KE150A-E3/73 only when protecting bidirectional signals or ungrounded circuits where negative transients occur. |
Compared with SMBJ150A, 1.5KE150A-E3/73 offers tighter clamping (207 V vs. 219 V) and higher surge current tolerance (7.2 A vs. 6.5 A), making it preferable for high-energy automotive transients; versus 1.5KE150CA, it provides lower capacitance and simpler biasing for DC rails but lacks negative-polarity protection.
Availability
1.5KE150A-E3/73 is available at Aetrix Electronics and suitable for automotive ECU power conditioning, industrial sensor interface hardening, and telecom line card surge protection requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE150A-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, MOSFETs, and protection devices with emphasis on reliability and ruggedness.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure applications where failure modes demand proven surge endurance and thermal stability.
FAQ
What is the breakdown voltage range for the 1.5KE150A-E3/73?
The 1.5KE150A-E3/73 has a guaranteed breakdown voltage (VBR) range of 143 V to 158 V at 1.0 mA test current, measured per JEDEC standard. This range ensures consistent avalanche initiation across manufacturing lots and temperature extremes, directly supporting design margin calculations for protected circuits. The 1.5KE150A-E3/73 maintains this specification across its full operating temperature range (-55 °C to +175 °C).
Is the 1.5KE150A-E3/73 RoHS compliant and halogen-free?
Yes, the 1.5KE150A-E3/73 carries the E3 suffix, indicating full RoHS compliance per Directive 2011/65/EU and halogen-free status per IEC 61249-2-21. The device uses matte tin-plated leads and UL 94 V-0 compliant epoxy molding compound. No exemptions apply, and material declarations are available through Vishay's official compliance portal for the 1.5KE150A-E3/73.
Does the 1.5KE150A-E3/73 meet AEC-Q101 for automotive use?
No, the 1.5KE150A-E3/73 is commercial-grade only. AEC-Q101 qualification applies only to variants with HE3 suffix (e.g., 1.5KE150AHE3_B). The 1.5KE150A-E3/73 does not undergo the extended stress testing required for automotive qualification, though its +175 °C TJ max and robust construction make it suitable for non-safety-critical industrial and telecom applications.
What is the clamping voltage of the 1.5KE150A-E3/73 at its rated peak pulse current?
The 1.5KE150A-E3/73 clamps to a maximum of 207 V at its rated peak pulse current (IPPM) of 7.2 A, tested with a 10/1000 µs waveform. This value represents the upper limit of voltage seen by downstream components during worst-case surge events and is validated per JEDEC standards. The 1.5KE150A-E3/73 achieves this clamping performance with minimal voltage overshoot due to its low dynamic impedance.
Can the 1.5KE150A-E3/73 be used in parallel to increase surge handling capacity?
Parallel connection of multiple 1.5KE150A-E3/73 units is not recommended without external balancing resistors, due to parameter spread in VBR (±5%) causing uneven current sharing. If higher peak power is required, select a single higher-rated device (e.g., 3.0KE150A) or verify matched-bin parts. The 1.5KE150A-E3/73 datasheet explicitly cautions against direct paralleling without derating analysis.
1.5KE150A-E3/73 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 7.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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:
- 1.5KE
1.5KE150A-E3/73 FAQ
1.How can I place an order for 1.5KE150A-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE150A-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 1.5KE150A-E3/73 reliable?
The price and inventory of 1.5KE150A-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 1.5KE150A-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE150A-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE150A-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE150A-E3/73?
1.5KE150A-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE150A-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 1.5KE150A-E3/73?
For technical support, including 1.5KE150A-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE150A-E3/73 requirements.
6.How does Aetrix verify that 1.5KE150A-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE150A-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 1.5KE150A-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE150A-E3/73?
All 1.5KE150A-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE150A-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 1.5KE150A-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE150A-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE150A-E3/73 Tags
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