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Vishay General Semiconductor - Diodes Division 1.5KE8.2-E3/73
- Part No.:
- 1.5KE8.2-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE8.2-E3/73.pdf
- Description:
- TVS DIODE 6.63VWM 12.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:7,399
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Product details
Overview
1.5KE8.2-E3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection on DC power rails and signal lines. It features a 8.2 V breakdown voltage (VBR = 7.79–8.61 V at 10 mA), 7.02 V maximum stand-off voltage (VWM), 12.1 V clamping voltage (VC) at 124 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used in automotive power supply inputs and industrial sensor interface protection.
For engineers reviewing the 1.5KE8.2-E3/73 datasheet, 1.5KE8.2-E3/73 pinout, 1.5KE8.2-E3/73 application, or 1.5KE8.2-E3/73 equivalent, this device delivers verified clamping performance, JEDEC-standardized 1.5KE package compatibility, AEC-Q101-qualified variants (HE3 suffix), and precise bidirectional/unidirectional polarity marking per Vishay Document 88301.
Technical Context
This TVS diode employs a glass-passivated silicon junction optimized for sub-nanosecond response (<1 ns) to transient surges, enabling effective suppression of ESD, lightning-induced spikes, and inductive switching transients. Its unidirectional configuration provides cathode-marked polarity with reverse-biased clamping action during overvoltage events.
The device operates across –55 °C to +175 °C junction temperature range, supports 200 A non-repetitive forward surge current (IFSM), and exhibits low incremental surge resistance - critical for maintaining low clamping voltage under high-current transients such as ISO 7637-2 Pulse 1/2a/5a.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 7.79–8.61 V at 10 mA - defines minimum voltage at which clamping initiates; ensures reliable turn-on before downstream IC damage |
| Stand-off Voltage VWM | 7.02 V max - maximum continuous reverse operating voltage without leakage activation; sets safe DC bias margin |
| Clamping Voltage VC | 12.1 V at 124 A (10/1000 µs) - peak voltage seen by protected circuit during worst-case surge; directly limits stress on downstream MOSFETs or MCUs |
| Peak Pulse Power PPPM | 1500 W - energy-handling capacity for standardized 10/1000 µs surge; enables robust protection against IEC 61000-4-5 Level 4 threats |
| Junction Temperature Range | –55 °C to +175 °C - supports operation in under-hood automotive and industrial environments without derating |
| Thermal Resistance RθJL | 15.4 °C/W - low junction-to-lead resistance enables efficient heat transfer to PCB copper; critical for repetitive surge reliability |
Pinout & Package
Package: DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body meeting UL 94 V-0; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND) in unidirectional configuration; conducts during positive transients when cathode is biased higher |
| Cathode | Clamping terminal | Marked with color band; connected to protected line (e.g., 5 V rail); conducts reverse current to clamp overvoltage to VC ≤ 12.1 V |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5 %) and long-term reliability under thermal cycling and humidity exposure |
| 1500 W peak pulse power (10/1000 µs) | Supports single-event surge immunity up to IEC 61000-4-5 4 kV (line-earth) without degradation |
| Sub-nanosecond response time | Clamps transients within <1 ns - faster than MOVs or polymer-based protectors, preserving signal integrity on high-speed lines |
| AEC-Q101 qualification option (HE3 suffix) | Validated for automotive applications including engine control units and body electronics requiring zero-failure field performance |
| Low clamping ratio (VC/VBR ≈ 1.55) | Minimizes overvoltage overshoot during clamping - essential for protecting 5 V logic interfaces and USB PHYs |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping element placed between battery rail and input filter capacitor; absorbs >95 % of surge energy before reaching LDO or MCU. Use Value: Limits peak rail voltage to ≤12.1 V during 1500 W transients, preventing latch-up or gate oxide rupture in downstream 5 V/3.3 V regulators. |
Use Scenario: Analog output lines (e.g., 4–20 mA current loop) in factory-floor pressure/temperature sensors. IC Role / Device Role / Timing Role: Unidirectional shunt protector mounted at connector entry point; clamps induced surges from nearby motor drives or welding equipment. Use Value: Maintains signal accuracy by limiting transient-induced offset error to <0.5 % full scale due to fast <1 ns response and low VC. |
| Consumer Device USB Port Protection | Telecom DSL Line Interface Protection |
Use Scenario: VBUS line in USB 2.0 host ports subjected to ESD (IEC 61000-4-2 ±15 kV contact). IC Role / Device Role / Timing Role: First-line defense parallel to port connector; diverts ESD current away from USB transceiver IC. Use Value: Clamps ESD pulses to ≤12.1 V within 1 ns, eliminating need for secondary RC filtering and preserving signal rise time <1 ns. |
Use Scenario: Tip/ring lines in ADSL/VDSL modems connected to outdoor telephone wiring vulnerable to lightning induction. IC Role / Device Role / Timing Role: Series-connected unidirectional TVS on line-side of isolation transformer; suppresses common-mode surges exceeding 1 kV. Use Value: Withstands 1500 W 10/1000 µs surges while maintaining <1 µA leakage at 7.02 V, ensuring minimal impact on line impedance and DSL signal SNR. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A | Lower PPPM (600 W), smaller SMB package (vs. DO-201AD), VC = 12.5 V at 48.8 A | Preferred for space-constrained PCBs; insufficient for 1500 W IEC 61000-4-5 Level 4 compliance | Select only when surge energy is limited to ≤600 W and board area is critical |
| 1.5KE8.2AHE3_B | Identical electrical specs; AEC-Q101 qualified, HE3 suffix indicates automotive-grade whisker testing (JESD 201 Class 2) | Required for automotive OEM designs; not needed for commercial/industrial use where qualification is not mandated | Choose 1.5KE8.2-E3/73 for cost-sensitive commercial applications; upgrade to HE3 variant for automotive programs |
Compared with SMBJ8.0A, 1.5KE8.2-E3/73 delivers 2.5× higher surge power handling and proven DO-201AD thermal robustness; versus 1.5KE8.2AHE3_B, it offers identical protection performance at lower cost and without automotive qualification overhead - ideal for industrial and consumer designs where AEC-Q101 is not required.
Availability
1.5KE8.2-E3/73 is available at Aetrix Electronics and suitable for automotive power input protection, industrial sensor signal line protection, consumer USB port protection, and telecom DSL line interface protection requiring stable component supply and traceable sourcing.
Supply support for 1.5KE8.2-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, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes must be mitigated without compromising signal integrity or thermal stability.
FAQ
What is the breakdown voltage tolerance for 1.5KE8.2-E3/73?
The 1.5KE8.2-E3/73 has a specified breakdown voltage (VBR) range of 7.79 V to 8.61 V at 10 mA test current, representing a ±5 % tolerance around the nominal 8.2 V rating. This tight tolerance ensures consistent clamping behavior across production lots and supports predictable system-level overvoltage margining in designs using 1.5KE8.2-E3/73.
Is 1.5KE8.2-E3/73 RoHS compliant and lead-free?
Yes, the "E3" suffix in 1.5KE8.2-E3/73 explicitly denotes RoHS-compliant construction with matte tin-plated leads, meeting JEDEC J-STD-002 and JESD 22-B102 solderability requirements. It also satisfies JESD 201 Class 1A whisker testing, confirming suitability for lead-free reflow processes and long-term reliability in commercial-grade applications.
Does 1.5KE8.2-E3/73 support bidirectional transient suppression?
No, 1.5KE8.2-E3/73 is a unidirectional TVS diode, indicated by the absence of "CA" in its part number. Bidirectional variants (e.g., 1.5KE8.2CA) exist in the same family but feature symmetrical clamping in both polarities. For 1.5KE8.2-E3/73, the cathode band marks the clamping terminal, and it functions only in reverse-biased mode - appropriate for DC rail protection where polarity is fixed.
What is the maximum clamping voltage of 1.5KE8.2-E3/73 under surge conditions?
The maximum clamping voltage (VC) of 1.5KE8.2-E3/73 is 12.1 V at 124 A peak pulse current with a 10/1000 µs waveform. This value represents the highest voltage imposed on the protected circuit during worst-case transient events and is critical for verifying that downstream components (e.g., 5 V logic ICs) remain within absolute maximum ratings when 1.5KE8.2-E3/73 is deployed.
Can 1.5KE8.2-E3/73 be used in automotive applications?
The base 1.5KE8.2-E3/73 is commercial-grade and not AEC-Q101 qualified; however, its automotive-qualified counterpart - 1.5KE8.2AHE3_B - shares identical electrical characteristics and is validated for under-hood use. For non-critical automotive subsystems or prototyping, 1.5KE8.2-E3/73 may be evaluated, but production automotive designs require the HE3-suffixed variant to meet OEM qualification mandates.
1.5KE8.2-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.63V
- Voltage - Breakdown (Min):
- 7.38V
- Voltage - Clamping (Max) @ Ipp:
- 12.5V
- Current - Peak Pulse (10/1000µs):
- 120A
- 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
1.5KE8.2-E3/73 FAQ
1.How can I place an order for 1.5KE8.2-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE8.2-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 1.5KE8.2-E3/73 reliable?
The price and inventory of 1.5KE8.2-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 1.5KE8.2-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE8.2-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE8.2-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE8.2-E3/73?
1.5KE8.2-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE8.2-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 1.5KE8.2-E3/73?
For technical support, including 1.5KE8.2-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE8.2-E3/73 requirements.
6.How does Aetrix verify that 1.5KE8.2-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE8.2-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 1.5KE8.2-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE8.2-E3/73?
All 1.5KE8.2-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE8.2-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 1.5KE8.2-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE8.2-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE8.2-E3/73 Tags
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