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Vishay General Semiconductor - Diodes Division 1.5KE11A-E3/54
- Part No.:
- 1.5KE11A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE11A-E3/54.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,686
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Product details
Overview
1.5KE11A-E3/54 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 10.5 V to 11.6 V breakdown voltage (VBR) at 1.0 mA test current, 9.40 V maximum standoff voltage (VWM), 1500 W peak pulse power (10/1000 µs), 96.2 A peak pulse current (IPPM), and clamps to ≤15.6 V at rated surge. It is used in automotive power supply inputs and industrial sensor interface protection.
For engineers reviewing the 1.5KE11A-E3/54 datasheet, 1.5KE11A-E3/54 pinout, 1.5KE11A-E3/54 application, or 1.5KE11A-E3/54 equivalent, this part delivers verified transient suppression for 12 V systems with low clamping voltage, fast sub-nanosecond response, and AEC-Q101-qualified variants available - critical for ESD and lightning-induced surge design validation.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches into low-impedance conduction, diverting surge current away from downstream ICs. Its glass-passivated junction ensures stable breakdown and low leakage (<5.0 µA at VWM).
It is rated for 1500 W peak pulse power under standardized 10/1000 µs waveform, with thermal resistance of 75 °C/W (junction-to-ambient) and 15.4 °C/W (junction-to-lead). The device supports continuous power dissipation of 6.5 W on an infinite heatsink at 75 °C lead temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 10.5 V / 11.6 V at 1.0 mA - defines precise avalanche initiation threshold for reliable triggering in 12 V nominal systems |
| VWM | 9.40 V - maximum continuous reverse operating voltage before leakage exceeds 5.0 µA; ensures no false triggering during normal operation |
| VC @ IPPM | ≤15.6 V at 96.2 A - clamping voltage under full-rated surge; limits stress on protected 12 V logic or microcontroller I/O |
| PPPM | 1500 W (10/1000 µs) - enables robust protection against ISO 7637-2 Pulse 1/2a/5a surges and IEC 61000-4-5 Level 3 transients |
| IFSM | 200 A (8.3 ms half-sine) - withstands high-energy inductive switch-off events without bond wire failure |
| TJ range | –55 °C to +175 °C - supports under-hood automotive and industrial environments without derating |
| Package | DO-201AE (Case Style 1.5KE) - axial-leaded, UL 94 V-0 molded epoxy package with matte tin-plated leads |
Pinout & Package
1.5KE11A-E3/54 uses the DO-201AE axial package (Case Style 1.5KE), with cathode indicated by a color band on one end. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, and rated for solder dip at 275 °C max for 10 s.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage rail; completes shunt path during avalanche conduction |
| Cathode (banded end) | High-side surge input terminal | Connected to protected line (e.g., 12 V supply); voltage sensed relative to anode to trigger clamping |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5 %), low leakage (<5 µA), and long-term reliability under thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Supports compliance with ISO 7637-2 and IEC 61000-4-5 surge immunity requirements for automotive and industrial equipment |
| 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 qualified option (HE3 suffix) | Validated for automotive under-hood applications including engine control units and body electronics modules |
| UL 94 V-0 compliant molding compound | Meets flammability safety standards for enclosed industrial and transportation electronics enclosures |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients per ISO 7637-2. IC Role / Device Role: Shunt-type transient suppressor placed between VBAT and chassis ground. Use Value: Clamps 12 V rail to ≤15.6 V during 100 V/100 ms load dump, preventing damage to LDOs and microcontrollers. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC analog inputs. IC Role / Device Role: Unidirectional TVS on 4–20 mA loop or 0–10 V output line. Use Value: Limits induced surges from nearby motor switching to <15.6 V, preserving ADC reference accuracy and op-amp input stages. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Inputs |
Use Scenario: Overvoltage protection on -48 V telecom rectifier outputs exposed to lightning-induced surges. IC Role / Device Role: Primary protection stage before DC/DC converter input filter. Use Value: Absorbs up to 1500 W of 10/1000 µs energy, reducing downstream filter capacitor stress and enabling smaller bulk capacitance. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machines or HVAC blowers. IC Role / Device Role: Across-motor terminals or across relay coil driving the motor. Use Value: Diverts 200 A surge current (8.3 ms) away from driver MOSFETs, eliminating need for snubber RC networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11A | DO-214AA package (SMB), lower PPPM = 600 W, same VBR range (10.5–11.6 V), higher IPPM = 53.3 A | Surface-mount only; unsuitable for through-hole PCBs or high-power discrete layouts requiring axial leads | Select SMBJ11A only when board space is constrained and surge energy is limited to ≤600 W. |
| 1.5KE11CA | Bidirectional variant (same package), symmetric VBR = 10.5–11.6 V, identical PPPM/VC, but no polarity marking | Required for AC-coupled or floating signal lines where voltage polarity reverses (e.g., RS-485, CAN bus) | Choose 1.5KE11CA only when protecting bidirectional data lines or transformer-coupled circuits - not for DC power rails. |
Compared with SMBJ11A, 1.5KE11A-E3/54 delivers 2.5× higher surge power handling and axial-leaded mechanical robustness; compared with 1.5KE11CA, it provides optimized clamping for unidirectional DC systems with explicit cathode orientation for layout-controlled grounding.
Availability
1.5KE11A-E3/54 is available at Aetrix Electronics and suitable for automotive ECU power inputs, industrial sensor interfaces, telecom DC feeds, and consumer appliance motor drive circuits requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE11A-E3/54 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 and automotive-grade qualification.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where robustness against ISO 7637 and IEC 61000-4-5 surges is mandatory.
FAQ
What is the breakdown voltage tolerance for 1.5KE11A-E3/54?
The 1.5KE11A-E3/54 has a guaranteed breakdown voltage range of 10.5 V to 11.6 V at 1.0 mA test current, corresponding to a ±5 % tolerance around the nominal 11 V rating. This tight VBR window ensures consistent clamping behavior across production lots and temperature extremes from –55 °C to +175 °C.
Is 1.5KE11A-E3/54 RoHS compliant and lead-free?
Yes, the "E3" suffix in 1.5KE11A-E3/54 indicates full RoHS compliance per Directive 2011/65/EU, with matte tin-plated leads and lead-free solder compatibility. It meets JESD 201 Class 1A whisker testing and is rated for solder dip at 275 °C for 10 seconds - confirming suitability for standard reflow and wave solder processes.
Can 1.5KE11A-E3/54 be used in bidirectional signal protection?
No - 1.5KE11A-E3/54 is strictly unidirectional and must be oriented with its banded (cathode) end toward the protected line. For bidirectional protection, use the 1.5KE11CA variant, which has symmetrical breakdown in both polarities and no polarity marking. Using 1.5KE11A-E3/54 on AC signals risks forward conduction and failure.
What is the maximum clamping voltage of 1.5KE11A-E3/54 under surge conditions?
The maximum clamping voltage (VC) of 1.5KE11A-E3/54 is 15.6 V when subjected to its rated peak pulse current of 96.2 A (10/1000 µs waveform). This value is measured at the device terminals and represents the upper limit of voltage seen by downstream circuitry during worst-case transient events.
Does 1.5KE11A-E3/54 meet AEC-Q101 qualification?
The base 1.5KE11A-E3/54 is commercial-grade; however, the AEC-Q101-qualified version is designated 1.5KE11AHE3_B (with revision code "B"). It undergoes extended stress testing including HTGB, HTRB, and temperature cycling per AEC-Q101 Rev D, making it suitable for automotive under-hood applications such as engine control modules and body control units.
1.5KE11A-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 96.2A
- 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
1.5KE11A-E3/54 FAQ
1.How can I place an order for 1.5KE11A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE11A-E3/54 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 1.5KE11A-E3/54 reliable?
The price and inventory of 1.5KE11A-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE11A-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE11A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE11A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE11A-E3/54?
1.5KE11A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE11A-E3/54 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 1.5KE11A-E3/54?
For technical support, including 1.5KE11A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE11A-E3/54 requirements.
6.How does Aetrix verify that 1.5KE11A-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE11A-E3/54 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 1.5KE11A-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE11A-E3/54?
All 1.5KE11A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE11A-E3/54, 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 1.5KE11A-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE11A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE11A-E3/54 Tags
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