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Vishay General Semiconductor - Diodes Division 1.5KE11CA-E3/73
- Part No.:
- 1.5KE11CA-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE11CA-E3/73.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:6,267
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Product details
Overview
1.5KE11CA-E3/73 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for clamping voltage transients on signal and power lines. It features a 11 V nominal breakdown voltage (VBR = 10.5–11.6 V at 1.0 mA), 1500 W peak pulse power (10/1000 µs), and clamps to ≤15.6 V at 96.2 A peak pulse current - used in automotive sensor protection, industrial I/O interfaces, and telecom line surge suppression.
For engineers reviewing the 1.5KE11CA-E3/73 datasheet, 1.5KE11CA-E3/73 pinout, 1.5KE11CA-E3/73 application, or 1.5KE11CA-E3/73 equivalent, this page delivers verified electrical specs, bidirectional clamping behavior, JEDEC 1.5KE package details, thermal derating curves, and direct alternatives for ESD/lightning transient protection design.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, with no polarity marking and identical VBR, VC, and IPPM characteristics in forward and reverse bias. Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance.
It is rated for 1500 W peak pulse power per 10/1000 µs waveform at TA = 25 °C, with thermal derating to zero power at TJ = 175 °C and RθJA = 75 °C/W. The device supports repetitive surge duty cycles up to 0.01 % and meets JESD 22-B106 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 10.5 V / 11.6 V at 1.0 mA - defines reliable conduction onset under transient stress |
| VWM | 9.40 V - maximum continuous working voltage before leakage exceeds 5 µA |
| VC @ IPPM | ≤15.6 V at 96.2 A - clamping voltage limiting downstream component stress during surge |
| PPPM | 1500 W (10/1000 µs) - peak transient energy absorption capability without failure |
| TJ max. | +175 °C - enables operation in under-hood automotive and industrial ambient environments |
| Package | JEDEC 1.5KE - axial-leaded, epoxy-molded case meeting UL 94 V-0 flammability |
| RoHS | E3 suffix - RoHS-compliant matte tin-plated leads, JESD 201 Class 1A whisker tested |
Pinout & Package
1.5KE11CA-E3/73 uses the standard JEDEC 1.5KE axial-leaded package: molded epoxy body over passivated junction, 0.375" (9.5 mm) lead length, 0.210" (5.3 mm) body diameter. No polarity marking - symmetrical bidirectional terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | Either lead serves as input/output - no cathode band; clamps identically in both directions |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| 1500 W peak pulse rating | Handles high-energy transients from inductive switching or lightning-induced surges |
| Sub-nanosecond response time | Clamps before sensitive ICs experience overvoltage damage (e.g., microcontrollers, RS-485 transceivers) |
| Low incremental clamping resistance | Minimizes voltage overshoot during fast-rising transients (e.g., EFT bursts) |
| UL 94 V-0 compliant molding | Prevents flame propagation in safety-critical enclosures per IEC 62368-1 |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus nodes and analog sensor inputs (e.g., temperature, pressure) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential signal pair or supply rail. Use Value: Limits transient voltage to ≤15.6 V, preventing latch-up or gate oxide rupture in connected MCUs and signal conditioners. | Use Scenario: Shielding digital input modules from surge coupling via 24 V DC field wiring in factory automation systems. IC Role / Device Role / Timing Role: Primary overvoltage clamp on channel-level inputs before optocoupler or Schmitt trigger interface. Use Value: Absorbs 1500 W surges while maintaining <5 µA leakage at 9.4 V, ensuring stable logic thresholds during normal operation. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Secondary surge protection on POTS or DSL line interfaces exposed to induced lightning per ITU-T K.20/K.21. IC Role / Device Role / Timing Role: Fast-acting shunt protector between tip/ring and ground, coordinated with GDT primary stage. Use Value: Clamps 10/1000 µs surges to ≤15.6 V within 1 ns, preserving signal integrity of line drivers and codec circuits. | Use Scenario: Input-stage transient suppression on AC-DC adapter primary side, guarding bridge rectifier and controller IC. IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk capacitor or rectifier output to suppress line-switching spikes. Use Value: Withstands 200 A non-repetitive forward surge (IFSM), enabling robust protection against mains-borne transients per IEC 61000-4-5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA | Smaller SMB package (3.5 mm × 4.6 mm), lower PPPM = 600 W, same VBR range and bidirectional symmetry | Surface-mount only; unsuitable for through-hole board layouts or high-power dissipation needs | Select when space-constrained PCBs require SMT assembly and 600 W clamping suffices |
| 1.5KE11CA-E3/54 | Identical electrical specs and package; differs only in tape-and-reel packaging (1400 pcs vs. 750 pcs per reel) | No functional or circuit-level difference - purely logistics variant | Choose based on production volume and pick-and-place feeder compatibility |
Compared with 1.5KE11CA-E3/73, SMBJ11CA offers footprint reduction at half the surge power handling, while 1.5KE11CA-E3/54 provides identical performance in a different reel configuration - enabling flexible procurement without design change.
Availability
1.5KE11CA-E3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter designs requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE11CA-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and ruggedness.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness against lightning, EFT, and load dump events is mandatory.
FAQ
What is the breakdown voltage tolerance for 1.5KE11CA-E3/73?
The 1.5KE11CA-E3/73 has a specified breakdown voltage range of 10.5 V to 11.6 V at 1.0 mA test current, yielding ±5.0 % tolerance around the nominal 11 V rating. This tight VBR window ensures consistent clamping behavior across production lots and supports predictable system-level surge margin calculations in designs using the 1.5KE11CA-E3/73.
Is 1.5KE11CA-E3/73 suitable for automotive applications?
Yes, 1.5KE11CA-E3/73 is widely deployed in automotive electronics for sensor and communication line protection. Its 175 °C maximum junction temperature, glass-passivated junction, and compliance with AEC-Q101 (in HE3 variants) make it suitable for under-hood and cabin applications. While the E3/73 variant is commercial-grade, its electrical robustness and thermal performance align with ISO 7637-2 pulse test requirements when properly mounted and heatsinked.
How does the clamping voltage of 1.5KE11CA-E3/73 compare to its breakdown voltage?
The 1.5KE11CA-E3/73 clamps to ≤15.6 V at its rated peak pulse current of 96.2 A, which is approximately 41 % above its minimum breakdown voltage of 10.5 V. This VC/VBR ratio reflects low dynamic impedance and effective energy diversion - critical for protecting downstream components like RS-485 transceivers or MCU GPIO pins that tolerate only limited overvoltage beyond their absolute maximum ratings.
Can 1.5KE11CA-E3/73 be used in parallel for higher surge capacity?
While multiple 1.5KE11CA-E3/73 devices can be paralleled to increase total peak pulse power handling, mismatched VBR tolerances may cause uneven current sharing. For reliable parallel operation, select units with matched VBR (e.g., binned to ±2.5 %) and use identical trace lengths and thermal paths. Vishay recommends verifying layout balance and thermal coupling in final design validation before deploying parallel 1.5KE11CA-E3/73 configurations.
What is the maximum steady-state power dissipation of 1.5KE11CA-E3/73?
The 1.5KE11CA-E3/73 has a maximum steady-state power dissipation (PD) of 6.5 W when mounted on an infinite heatsink at lead temperature (TL) = 75 °C. At ambient temperature (TA) = 25 °C, derating applies per Fig. 5 in the datasheet - actual usable DC power drops to ~3.5 W due to RθJA = 75 °C/W. This limits continuous leakage current handling but does not affect transient surge capability, which remains 1500 W for short-duration events.
1.5KE11CA-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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
1.5KE11CA-E3/73 FAQ
1.How can I place an order for 1.5KE11CA-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE11CA-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 1.5KE11CA-E3/73 reliable?
The price and inventory of 1.5KE11CA-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 1.5KE11CA-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE11CA-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE11CA-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE11CA-E3/73?
1.5KE11CA-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE11CA-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 1.5KE11CA-E3/73?
For technical support, including 1.5KE11CA-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE11CA-E3/73 requirements.
6.How does Aetrix verify that 1.5KE11CA-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE11CA-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 1.5KE11CA-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE11CA-E3/73?
All 1.5KE11CA-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE11CA-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 1.5KE11CA-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE11CA-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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