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Vishay General Semiconductor - Diodes Division 1.5KE100A-E3/51
- Part No.:
- 1.5KE100A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE100A-E3/51.pdf
- Description:
- TVS DIODE 85.5VWM 137VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:7,074
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Product details
Overview
1.5KE100A-E3/51 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 95.0 V to 105 V breakdown voltage (VBR), 85.5 V maximum standoff voltage (VWM), 137 V clamping voltage at 10.9 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and operates across –55 °C to +175 °C junction temperature range - deployed in automotive power supply inputs and industrial sensor interface protection.
For engineers reviewing the 1.5KE100A-E3/51 datasheet, 1.5KE100A-E3/51 pinout, 1.5KE100A-E3/51 application, or 1.5KE100A-E3/51 equivalent, this page delivers verified electrical parameters, JEDEC-standard 1.5KE package dimensions, polarity marking guidance, thermal resistance data (RθJA = 75 °C/W), and direct alternative part comparisons for ESD/lightning surge protection design validation.
Technical Context
The 1.5KE100A-E3/51 uses a glass passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its unidirectional configuration enables cathode-referenced clamping on positive-going transients while blocking reverse leakage ≤1.0 µA at 85.5 V.
It complies with JEDEC standard test conditions (10/1000 µs waveform, 0.01% duty cycle), supports 200 A non-repetitive forward surge current (8.3 ms half-sine), and exhibits a +0.106 %/°C temperature coefficient of VBR, ensuring predictable voltage drift under thermal stress in automotive under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 95.0 V / 105 V - defines guaranteed clamping onset range under 1.0 mA test current; ensures reliable triggering above system nominal voltage. |
| VWM | 85.5 V - maximum continuous reverse operating voltage; must exceed circuit's highest steady-state DC rail to prevent leakage conduction. |
| VC @ IPPM | 137 V - clamped voltage at 10.9 A peak pulse; determines maximum stress imposed on downstream ICs during surge events. |
| PPPM | 1500 W - peak pulse power handling (10/1000 µs); supports robust protection against lightning-induced surges per IEC 61000-4-5. |
| IPPM | 10.9 A - derived peak pulse current at VC; used to size series impedance and verify PCB trace current capacity. |
| TJ max. | +175 °C - maximum junction temperature; enables operation in high-ambient environments like engine control units without derating. |
| RθJA | 75 °C/W - junction-to-ambient thermal resistance; informs heatsinking requirements when operating near PD = 6.5 W limit. |
Pinout & Package
Package: JEDEC Case Style 1.5KE - molded epoxy body with matte tin-plated leads, UL 94 V-0 rated, RoHS-compliant (E3 suffix). Cathode indicated by color band; bidirectional variants have no marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; forms clamping path for positive transients on cathode side. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 24 V rail); absorbs energy during overvoltage events via avalanche breakdown. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance and long-term reliability under humidity and thermal cycling stress. |
| 1500 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial and automotive applications. |
| Clamping response time <1 ns | Protects sensitive MOSFET gates and microcontroller I/O before transient energy propagates into system logic. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., inductive switch-off), improving clamping precision. |
| AEC-Q101 qualified option available | HE3 variant (e.g., 1.5KE100AHE3_B) supports automotive-grade qualification for under-hood ECUs. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V/24 V battery-fed control modules exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping device placed directly at connector entry point to shunt surge energy before reaching DC-DC converters and MCU power rails. Use Value: Limits transient voltage to ≤137 V, preventing latch-up or gate oxide rupture in downstream 3.3 V/5 V logic and power management ICs. |
Use Scenario: 4–20 mA current loop or analog voltage output (0–10 V) sensors in factory automation subject to ESD and cable-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed across sensor output terminals to clamp negative transients and absorb positive spikes induced by nearby motor switching. Use Value: Maintains signal integrity by limiting excursion beyond ±137 V, preserving ADC input range and isolator withstand ratings. |
| Telecom Line Interface Protection | Consumer Power Adapter Output Protection |
Use Scenario: DSL or PoE-powered Ethernet ports where external cabling introduces lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Paired with common-mode chokes and gas discharge tubes as secondary-stage protection on DC bias lines. Use Value: Provides precise low-capacitance clamping (CJ < 100 pF typical) without distorting high-frequency data signals up to 10 MHz. |
Use Scenario: Secondary-side DC output of wall adapters powering USB peripherals or IoT hubs, vulnerable to user-induced plug/unplug transients. IC Role / Device Role / Timing Role: Final-stage TVS mounted adjacent to output connector to suppress fast-rising ringing and contact bounce spikes. Use Value: Prevents damage to connected devices' USB PHYs or charging controllers by clamping output to ≤137 V within nanoseconds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100A | DO-214AA package; lower PPPM = 600 W; VC = 165 V @ 3.6 A; RθJA = 110 °C/W | Lower power handling limits use to sub-1 kV surge environments; less suitable for ISO 7637-2 Pulse 5a compliance. | Select SMBJ100A only when board space constraints prohibit axial 1.5KE footprint and surge threat level is limited to IEC 61000-4-2 ESD. |
| 1.5SMC100A | SMA package; same PPPM = 1500 W; VC = 137 V @ 10.9 A; but VBR = 95–105 V identical; RθJA = 100 °C/W | Surface-mount format enables automated assembly; higher thermal resistance requires careful layout for sustained power dissipation. | Choose 1.5SMC100A for SMT production lines where reflow compatibility and smaller footprint outweigh axial lead mechanical robustness. |
Compared with 1.5KE100A-E3/51, SMBJ100A offers compact size but reduced surge margin, while 1.5SMC100A matches electrical performance in an SMT package at the cost of higher thermal impedance - both require revised layout and thermal validation before substitution.
Availability
1.5KE100A-E3/51 is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interfaces, telecom line protection, and consumer adapter outputs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5KE100A-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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive qualification.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where robustness against lightning, ESD, and load dump is mission-critical.
FAQ
What is the breakdown voltage tolerance of the 1.5KE100A-E3/51?
The 1.5KE100A-E3/51 has a specified breakdown voltage range of 95.0 V to 105 V at 1.0 mA test current, representing ±5% tolerance around the nominal 100 V rating. This tight VBR window ensures consistent clamping behavior across production lots and supports reliable coordination with upstream fuses or current-limiting resistors in surge protection circuits.
Does the 1.5KE100A-E3/51 meet automotive qualification standards?
The base 1.5KE100A-E3/51 is commercial grade; however, the AEC-Q101 qualified version is available as 1.5KE100AHE3_B (with "B" denoting revision code). That variant undergoes stress testing per AEC-Q101 including HTGB, HTRB, and temperature cycling, making it suitable for automotive powertrain and chassis modules where qualification is mandatory.
How does the 1.5KE100A-E3/51 compare to bidirectional TVS diodes like 1.5KE100CA?
The 1.5KE100A-E3/51 is unidirectional and clamps only positive transients relative to its cathode, whereas 1.5KE100CA provides symmetrical clamping for AC-coupled or floating lines. For DC systems with defined polarity, 1.5KE100A-E3/51 offers lower leakage and tighter VWM margin; 1.5KE100CA is required only when bidirectional protection is essential, such as in telecom data lines.
What is the maximum allowable mounting temperature for soldering the 1.5KE100A-E3/51?
The 1.5KE100A-E3/51 supports solder dip at 275 °C maximum for 10 seconds per JESD 22-B106, and its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 for solderability. Reflow profiles must stay within peak temperatures ≤260 °C for ≤30 seconds to avoid epoxy degradation or bond wire stress.
Can the 1.5KE100A-E3/51 be used in parallel to increase surge current handling?
Yes, multiple 1.5KE100A-E3/51 devices can be paralleled to distribute surge current, but matching VBR (±2%) and symmetric PCB layout are critical to ensure current sharing. Uneven distribution may cause one unit to absorb >80% of IPPM, leading to premature failure. Derating total PPPM by 20% is recommended for parallel configurations.
1.5KE100A-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):
- 85.5V
- Voltage - Breakdown (Min):
- 95V
- Voltage - Clamping (Max) @ Ipp:
- 137V
- Current - Peak Pulse (10/1000µs):
- 10.9A
- 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
1.5KE100A-E3/51 FAQ
1.How can I place an order for 1.5KE100A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE100A-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 1.5KE100A-E3/51 reliable?
The price and inventory of 1.5KE100A-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 1.5KE100A-E3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE100A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE100A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE100A-E3/51?
1.5KE100A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE100A-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 1.5KE100A-E3/51?
For technical support, including 1.5KE100A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE100A-E3/51 requirements.
6.How does Aetrix verify that 1.5KE100A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE100A-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 1.5KE100A-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE100A-E3/51?
All 1.5KE100A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE100A-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 1.5KE100A-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE100A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE100A-E3/51 Tags
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