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Vishay General Semiconductor - Diodes Division 1.5KE16A-E3/51
- Part No.:
- 1.5KE16A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE16A-E3/51.pdf
- Description:
- TVS DIODE 13.6VWM 22.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,865
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Product details
Overview
1.5KE16A-E3/51 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary-side overvoltage protection in DC power rails and signal lines. It features a 15.2 V to 16.8 V breakdown voltage (VBR) at 1.0 mA, 13.6 V maximum standoff voltage (VWM), 22.5 V clamping voltage (VC) at 66.7 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5KE16A-E3/51 datasheet, 1.5KE16A-E3/51 pinout, 1.5KE16A-E3/51 application, or 1.5KE16A-E3/51 equivalent, this device delivers verified clamping performance, glass-passivated junction reliability, RoHS-compliant matte tin leads, and UL 94 V-0 molded epoxy packaging - critical for automotive-grade ESD protection, industrial power supply input stages, and telecom line interface hardening.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when transient voltage exceeds VBR, it avalanches into low-impedance conduction, diverting surge current away from downstream circuitry. Its 15.4 °C/W junction-to-lead thermal resistance enables effective heat dissipation during repetitive 10/1000 µs pulses, while its <1 ns response time ensures protection before sensitive components experience overstress.
The device complies with JEDEC standards for transient suppression, supports 200 A non-repetitive forward surge current (IFSM), and maintains stable clamping up to 175 °C junction temperature. Its 75 °C/W junction-to-ambient thermal resistance reflects standard PCB-mount thermal performance without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 15.2 V / 16.8 V at 1.0 mA - defines precise avalanche initiation threshold for reliable overvoltage detection |
| VWM | 13.6 V - maximum continuous reverse operating voltage before leakage rises above 1.0 µA |
| VC at IPPM | 22.5 V at 66.7 A - clamping voltage under 1500 W 10/1000 µs surge, limiting stress on protected ICs |
| PPPM | 1500 W - peak pulse power handling capability per single 10/1000 µs transient event |
| IFSM | 200 A - surge current rating for 8.3 ms half-sine wave, supporting high-energy inductive kickback protection |
| TJ range | –55 °C to +175 °C - wide operating junction temperature enabling use in under-hood automotive and industrial environments |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with 0.375" lead length, UL 94 V-0 compliant epoxy body |
Pinout & Package
1.5KE16A-E3/51 uses the standard DO-201AD axial package (Case Style 1.5KE), with cathode indicated by a color band on the body. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, rated for 275 °C dip soldering (10 s max). Dimensions: 5.3 mm diameter × 9.5 mm body length, 0.968 g unit weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction or bidirectional operation | Connected to lower-potential side of protected line; not used in unidirectional clamping mode |
| Cathode (banded end) | Clamping node for reverse-biased transient suppression | Connected to protected circuit node; conducts avalanche current to ground or rail during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| 1500 W peak pulse power (10/1000 µs) | Supports robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) in industrial power inputs |
| <1 ns response time | Clamps transients before propagation to sensitive logic or analog circuitry, preventing latch-up or gate oxide damage |
| UL 94 V-0 epoxy molding | Meets flammability safety requirements for enclosed power supplies and telecom equipment enclosures |
| RoHS-compliant matte tin leads | Ensures compatibility with lead-free reflow and wave soldering processes without whisker risk (JESD 201 Class 1A) |
Applications
| Industrial Power Input Protection | Automotive Sensor Interface Protection |
|---|---|
Use Scenario: 24 V DC power input stage of PLC I/O modules exposed to load dump and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VIN and GND to clamp transients before DC-DC converter input. Use Value: Limits voltage to ≤22.5 V during 1500 W surges, preventing damage to upstream rectifiers and downstream regulators. |
Use Scenario: CAN bus or LIN transceiver lines in engine control units subject to ISO 7637-2 pulse 1/2/5a. IC Role / Device Role / Timing Role: Standoff protection device on signal line, referenced to local ground with fast clamping action. Use Value: Responds in <1 ns to suppress >100 V transients to safe levels (<22.5 V), preserving transceiver integrity. |
| Telecom Line Interface Hardening | Consumer Appliance Motor Drive Protection |
Use Scenario: AC/DC adapter secondary-side output lines feeding Ethernet PHYs or PoE controllers. IC Role / Device Role / Timing Role: Secondary-side TVS on 5 V/12 V rails to absorb ESD and surge coupling from connected cables. Use Value: Clamps 8/20 µs surges to 22.5 V with 66.7 A capacity, meeting IEC 61000-4-2 Level 4 and IEC 61000-4-5 requirements. |
Use Scenario: H-bridge gate driver supply rails in washing machine motor control boards. IC Role / Device Role / Timing Role: Rail-to-rail TVS on 15 V bias supply to protect high-side and low-side driver ICs from inductive kickback. Use Value: Withstands 200 A 8.3 ms surge and clamps to 22.5 V, preventing driver latch-up or overvoltage shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16A | DO-214AA (SMB) surface-mount package; same VBR range (15.2–16.8 V), but lower PPPM = 600 W | Designed for space-constrained PCB layouts; unsuitable for 1500 W surge duty cycles | Select SMBJ16A only when board area is constrained and surge energy is limited to ≤600 W |
| 1.5KE16CA | Bidirectional variant with identical VBR and PPPM | Required for AC-coupled or floating signal lines where polarity reversal occurs (e.g., RS-485, audio) | Choose 1.5KE16CA instead of 1.5KE16A-E3/51 only when protecting symmetric differential or AC signals |
Compared with SMBJ16A and 1.5KE16CA, the 1.5KE16A-E3/51 uniquely combines axial-leaded mechanical robustness, 1500 W surge capacity, and unidirectional clamping - making it optimal for high-energy DC rail protection where through-hole mounting and legacy footprint compatibility are required.
Availability
1.5KE16A-E3/51 is available at Aetrix Electronics and suitable for industrial power input protection, automotive sensor interface hardening, and telecom line interface applications requiring stable component supply, long-lifecycle support, and traceable sourcing for production programs.
Supply support for 1.5KE16A-E3/51 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power efficiency, and ruggedized design.
The 1.5KE series was developed specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated.
FAQ
What is the breakdown voltage tolerance for 1.5KE16A-E3/51?
The 1.5KE16A-E3/51 has a guaranteed breakdown voltage (VBR) range of 15.2 V to 16.8 V at 1.0 mA test current, representing ±5.3% tolerance around the nominal 16 V rating. This tight spread ensures consistent clamping behavior across production lots and enables predictable system-level overvoltage margin design without derating overhead.
Is 1.5KE16A-E3/51 RoHS compliant and lead-free compatible?
Yes, the 1.5KE16A-E3/51 carries the "E3" suffix indicating full RoHS compliance per Directive 2011/65/EU, with matte tin-plated leads qualified to JESD 201 Class 1A whisker testing. It supports lead-free reflow profiles up to 260 °C and wave soldering at 275 °C for 10 seconds - matching IPC-J-STD-020 and J-STD-002 requirements.
Can 1.5KE16A-E3/51 be used in bidirectional signal protection?
No - the 1.5KE16A-E3/51 is strictly unidirectional and must be installed with cathode toward the protected circuit. For bidirectional protection (e.g., AC lines, differential buses), the 1.5KE16CA variant is required. Using 1.5KE16A-E3/51 on bidirectional signals risks forward conduction during negative transients and inadequate clamping.
What is the maximum clamping voltage of 1.5KE16A-E3/51 under surge conditions?
The 1.5KE16A-E3/51 clamps to a maximum of 22.5 V when subjected to its rated 66.7 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and represents the worst-case voltage seen by downstream components during a full 1500 W transient event.
Does 1.5KE16A-E3/51 meet AEC-Q101 qualification?
No - the 1.5KE16A-E3/51 is commercial-grade only. AEC-Q101 qualification applies only to variants with the "HE3" suffix (e.g., 1.5KE16AHE3_B). The "E3" suffix denotes RoHS compliance and commercial temperature range (–55 °C to +175 °C), but does not include automotive stress testing or qualification documentation.
1.5KE16A-E3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 13.6V
- Voltage - Breakdown (Min):
- 15.2V
- Voltage - Clamping (Max) @ Ipp:
- 22.5V
- Current - Peak Pulse (10/1000µs):
- 66.7A
- 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
1.5KE16A-E3/51 FAQ
1.How can I place an order for 1.5KE16A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE16A-E3/51 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 1.5KE16A-E3/51 reliable?
The price and inventory of 1.5KE16A-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE16A-E3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE16A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE16A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE16A-E3/51?
1.5KE16A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE16A-E3/51 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 1.5KE16A-E3/51?
For technical support, including 1.5KE16A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE16A-E3/51 requirements.
6.How does Aetrix verify that 1.5KE16A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE16A-E3/51 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 1.5KE16A-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE16A-E3/51?
All 1.5KE16A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE16A-E3/51, 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 1.5KE16A-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE16A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE16A-E3/51 Tags
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