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Diodes Incorporated 1.5KE8V2A-B
- Part No.:
- 1.5KE8V2A-B
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE8V2A-B.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:3,634
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Product details
Overview
1.5KE8V2A-B from Diodes Incorporated is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, designed for primary-level overvoltage protection on DC power rails and signal lines. It features a 7.02 V reverse standoff voltage, 7.79 V minimum breakdown voltage at 10 mA test current, 12.1 V maximum clamping voltage at 124 A peak pulse current, and operates across –55°C to +175°C.
For engineers reviewing the 1.5KE8V2A-B datasheet, 1.5KE8V2A-B pinout, 1.5KE8V2A-B application, or 1.5KE8V2A-B equivalent, this part supports fast-response surge suppression in automotive body electronics, industrial I/O interfaces, and telecom power input stages where precise clamping and high-energy absorption are required.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below VRWM (7.02 V), transitions rapidly into low-impedance conduction above VBR (≥7.79 V), and limits transient voltages to ≤12.1 V at 124 A (1.0 ms pulse). Its glass-passivated junction ensures stable leakage (<200 µA at 7.02 V) and repeatable breakdown behavior.
The device uses axial-leaded DO-201 packaging with tin-finished leads, rated for 200 A non-repetitive forward surge current and 5.0 W steady-state dissipation at 75°C lead temperature. Its 0.065 %/°C voltage temperature coefficient enables predictable clamping performance across wide ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W - Absorbs high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) without failure |
| Reverse Standoff Voltage (VRWM) | 7.02 V - Maximum continuous DC operating voltage before significant leakage begins |
| Breakdown Voltage (VBR) | 7.79 V min @ 10 mA - Confirmed avalanche initiation threshold under standardized test conditions |
| Clamping Voltage (VC) | 12.1 V max @ 124 A - Upper voltage limit imposed during 1.0 ms transient event |
| Peak Pulse Current (IPP) | 124 A - Maximum single-pulse surge current the device can safely clamp |
| Leakage Current (IR) | 200 µA max @ 7.02 V - Ensures minimal standby power loss and signal integrity in protected circuits |
| Operating Temperature | –55°C to +175°C - Validated for under-hood automotive and industrial environments |
Pinout & Package
Package: DO-201 axial-leaded epoxy package (UL 94V-0 rated), 25.4 mm overall length, 5.0 mm body diameter, 1.0 mm lead diameter. Cathode indicated by band on unidirectional version.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to circuit ground or lowest potential node during clamping operation |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 5 V rail, CAN_H); conducts when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| 1500 W peak pulse rating (1.0 ms) | Supports robust protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges |
| Fast response time (<1.0 ps) | Clamps transients before downstream ICs experience damaging overvoltage |
| RoHS-compliant, halogen-free "Green" design | Meets automotive and industrial environmental compliance requirements (Br+Cl <1500 ppm, Sb <1000 ppm) |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Stage |
|---|---|
Use Scenario: Protects 5 V microcontroller supply rail from load-dump and alternator ripple-induced transients in vehicle door modules. IC Role / Device Role: Primary shunt clamping element placed between VCC and GND, upstream of LDO regulator. Use Value: Limits voltage excursions to ≤12.1 V during 124 A pulses, preventing MCU brownout or latch-up. |
Use Scenario: Shields 24 V digital input optocoupler interface from field-wiring induced surges in factory automation cabinets. IC Role / Device Role: Front-end transient suppressor on dry-contact input line, before series current-limiting resistor. Use Value: Maintains <200 µA leakage at 24 V nominal, ensuring clean logic-level detection while surviving repeated 1 kV/500 Ω transients. |
| Telecom Power Entry Protection | Medical Equipment DC Power Distribution |
Use Scenario: Guards AC/DC adapter output against lightning-induced surges entering via Ethernet PoE or auxiliary DC inputs. IC Role / Device Role: Secondary-stage clamping device after fuse and common-mode choke, directly at DC output terminals. Use Value: Delivers 1500 W pulse handling with 0.065 %/°C tempco, enabling stable clamping across –40°C to +85°C operating range. |
Use Scenario: Secures isolated 3.3 V/5 V logic rails in patient-connected diagnostic devices against ESD and defibrillator-induced transients. IC Role / Device Role: Final-stage TVS on low-voltage power nets feeding ADCs, sensors, and communication ICs. Use Value: Provides certified RoHS/halogen-free construction and 175°C max junction temperature for safety-critical thermal margin. |
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 (Diodes Inc.) | 600 W rating, SMB package, 8.0 V VRWM, 12.0 V VC @ 50 A | Limited to lower-energy transients; suited for secondary protection or space-constrained PCBs | Select when board area is constrained and peak surge energy does not exceed 600 W |
| 1N6267A (ON Semiconductor) | Same 1500 W rating, DO-201 package, but 7.5 V VRWM and 12.5 V VC @ 120 A | Slightly higher clamping voltage and tighter VRWM tolerance (±5% vs ±10%) | Choose when tighter voltage matching to 7.5 V rails is required and 0.4 V higher VC is acceptable |
Compared with SMBJ8.0A and 1N6267A, the 1.5KE8V2A-B offers the lowest clamping voltage (12.1 V) at highest surge current (124 A) among DO-201 8 V-class TVS diodes, making it optimal for high-reliability primary protection where minimal let-through voltage is critical.
Availability
1.5KE8V2A-B is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and telecom power entry requiring stable component supply and full traceability through production lifecycles.
Supply support for 1.5KE8V2A-B 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability protection, power management, and signal integrity solutions for automotive, industrial, and computing markets.
The 1.5KE series is engineered for high-energy transient suppression in harsh environments, targeting applications demanding proven AEC-Q200 readiness, extended temperature operation, and consistent clamping performance across production lots.
FAQ
What is the difference between 1.5KE8V2A-B and 1.5KE8V2CA-B?
The 1.5KE8V2A-B is unidirectional, with cathode marking and asymmetric conduction (conducts only during positive transients relative to cathode). The 1.5KE8V2CA-B is bidirectional, lacking polarity marking and clamping both polarities symmetrically-suitable for AC lines or differential signals like RS-485. Their VRWM, VBR, and VC values differ accordingly.
Can 1.5KE8V2A-B be used in place of a Zener diode for voltage regulation?
No. While it shares a PN junction structure, the 1.5KE8V2A-B is optimized for transient suppression-not steady-state regulation. Its VBR tolerance is ±10%, leakage rises sharply near VBR, and it lacks the tight dynamic impedance or low-noise characteristics needed for precision regulation. Use dedicated Zener regulators instead.
Is 1.5KE8V2A-B qualified to AEC-Q200?
Per Diodes Incorporated documentation, the 1.5KE8V2A-B is manufactured in IATF 16949-certified facilities and supports PPAP; however, it is not formally AEC-Q200 stress-tested. For automotive applications requiring AEC-Q200 certification, Diodes recommends contacting their automotive team for qualified alternatives such as the P4SMAJ8.0A-Q series.
What is the maximum recommended PCB trace width for 1.5KE8V2A-B anode/cathode connections?
To sustain 124 A peak pulse without excessive trace heating or voltage drop, use ≥2.0 mm wide, 2 oz copper traces (≥70 µm thickness) for both anode and cathode paths, with direct connection to solid ground/power planes. Avoid vias in the main surge path; if unavoidable, use ≥3 stacked vias per connection with filled plating.
1.5KE8V2A-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.02V
- Voltage - Breakdown (Min):
- 7.79V
- Voltage - Clamping (Max) @ Ipp:
- 12.1V
- Current - Peak Pulse (10/1000µs):
- 124A
- 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:
- DO-201
1.5KE8V2A-B FAQ
1.How can I place an order for 1.5KE8V2A-B through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE8V2A-B 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 1.5KE8V2A-B reliable?
The price and inventory of 1.5KE8V2A-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE8V2A-B is usually 5 days.
3.What payment methods are accepted for 1.5KE8V2A-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE8V2A-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE8V2A-B?
1.5KE8V2A-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE8V2A-B 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 1.5KE8V2A-B?
For technical support, including 1.5KE8V2A-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE8V2A-B requirements.
6.How does Aetrix verify that 1.5KE8V2A-B is sourced from the original manufacturer or authorized distributors?
All 1.5KE8V2A-B 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 1.5KE8V2A-B meets industry standards.
7.What is the process for return or replacement of 1.5KE8V2A-B?
All 1.5KE8V2A-B units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE8V2A-B, 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 1.5KE8V2A-B part is unused and in its original packaging.
Return procedure for 1.5KE8V2A-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE8V2A-B Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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