My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5KE24C-E3/73
- Part No.:
- 1.5KE24C-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE24C-E3/73.pdf
- Description:
- TVS DIODE 19.4VWM 34.7VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,560
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE24C-E3/73 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 24 V breakdown voltage (VBR = 22.8–25.2 V at IT = 1.0 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 33.2 V at 45.2 A, and operates across –55 °C to +175 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching surges in industrial and automotive systems.
For engineers reviewing the 1.5KE24C-E3/73 datasheet, 1.5KE24C-E3/73 pinout, 1.5KE24C-E3/73 application, or 1.5KE24C-E3/73 equivalent, this device serves as a high-energy, fast-response (≈1 ns) unidirectional/bidirectional clamping solution with glass-passivated junction, RoHS-compliant matte tin leads, and UL 94 V-0 molded epoxy package - critical for ESD, surge, and load-dump protection in DC power rails and low-speed data lines.
Technical Context
This TVS diode employs a silicon avalanche junction optimized for transient suppression under repetitive 10/1000 µs waveforms at ≤0.01% duty cycle. Its bidirectional configuration enables symmetrical clamping on AC-coupled or floating lines without polarity sensitivity, and its low incremental surge resistance ensures minimal voltage overshoot during high-current transients.
The device exhibits a temperature coefficient of VBR of +0.094 %/°C and maintains stable clamping performance up to TJ = 175 °C. Thermal resistance is RθJL = 15.4 °C/W (junction-to-lead), enabling effective heat dissipation through PCB copper when mounted with ≥0.375" (9.5 mm) lead length.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.8 V / 25.2 V at 1.0 mA - defines precise clamping onset threshold for bidirectional surge events |
| VWM | 20.5 V - maximum continuous working voltage before leakage exceeds 1.0 µA, setting safe DC bias margin |
| VC @ IPPM | 33.2 V at 45.2 A - actual clamped voltage during full 1500 W transient, limiting downstream stress |
| PPPM | 1500 W (10/1000 µs) - energy-handling capacity sufficient for IEC 61000-4-5 Level 4 surges |
| IPPM | 45.2 A - peak surge current capability directly determines survivability against 1 kV/500 A line surges |
| TJ range | –55 °C to +175 °C - supports under-hood automotive and industrial environments without derating |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with 0.375" lead length, UL 94 V-0 compliant epoxy body |
Pinout & Package
1.5KE24C-E3/73 uses a two-terminal axial-leaded DO-201AD (Case Style 1.5KE) package with no polarity marking - consistent with its bidirectional function. 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/Cathode (symmetrical) | Bidirectional avalanche junction terminal | No cathode band; terminals interchangeable - enables placement on AC or floating nodes without orientation check |
| Lead 1 / Lead 2 | Current path for surge conduction | Leads serve as thermal and electrical interface; RθJL = 15.4 °C/W requires ≥0.375" length for rated power handling |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5%) and long-term reliability under humidity and thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 combination wave testing up to 4 kV open-circuit / 2 kA short-circuit |
| Clamping ratio VC/VBR ≈ 1.46 | Indicates low dynamic impedance (<0.3 Ω), minimizing voltage overshoot during fast transients |
| Response time <1 ns | Clamps before sensitive ICs experience destructive overvoltage - faster than MOVs or GDTs |
| UL 94 V-0 epoxy molding | Meets flammability requirements for enclosed industrial and automotive enclosures |
Applications
| Industrial Motor Drive Power Input | Automotive Body Control Module (BCM) Sensor Lines |
|---|---|
Use Scenario: Protection of 24 V DC input stage against load dump (ISO 7637-2 Pulse 5a) and inductive kickback from relay coils. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across input rail and ground to shunt surge energy before it reaches DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤33.2 V, preventing latch-up or gate oxide damage in downstream 3.3 V/5 V logic and power management ICs. |
Use Scenario: Shielding LIN bus or analog sensor inputs (e.g., temperature, position) from ESD (IEC 61000-4-2 ±8 kV contact) and battery transients. IC Role / Device Role / Timing Role: Low-capacitance (≈150 pF typical) TVS placed at connector entry point to absorb sub-100 ns ESD events before signal conditioning circuitry. Use Value: Sub-nanosecond response ensures clamping occurs within first 10% of ESD waveform, preserving signal integrity and avoiding false triggering in analog front-ends. |
| Telecom DSL Line Interface | Consumer Appliance Mainboard Power Rails |
Use Scenario: Safeguarding ADSL/VDSL line drivers and transformers against lightning-induced surges on outdoor copper pairs (ITU-T K.20/K.21). IC Role / Device Role / Timing Role: Primary-level protector in series with gas discharge tube (GDT) - handles fast rise-time components while GDT handles high-energy tail. Use Value: 1500 W rating and 33.2 V clamping allow coordination with secondary protectors to achieve >6 kV common-mode surge immunity. |
Use Scenario: Overvoltage suppression on 12 V/5 V rails powering MCU, display backlight, and motor drivers in washing machines or HVAC controllers. IC Role / Device Role / Timing Role: Standalone TVS on board-level power distribution network, placed near connectors and switching regulators. Use Value: RoHS-compliant matte tin leads and AEC-Q101 qualification (via HE3 variant family) support long-life consumer product compliance and field-reliability targets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA | DO-214AA (SMB) package, lower PPPM = 600 W, VC = 38.9 V @ 15.4 A | Surface-mount only; unsuitable for high-energy surges requiring >1 kW handling | Select when board space is constrained and surge threat level is limited to IEC 61000-4-5 Level 2 (1 kV/0.5 kA) |
| 1.5KE24A-E3/73 | Unidirectional version; same VBR, VC, and PPPM, but includes cathode band marking | Requires correct polarity placement; not usable on AC or floating nodes | Choose only for DC-biased rails where reverse conduction must be blocked (e.g., protecting N-channel MOSFET gates) |
Compared with SMBJ24CA and 1.5KE24A-E3/73, the 1.5KE24C-E3/73 uniquely delivers 1500 W bidirectional clamping in an axial-leaded through-hole package - making it optimal for high-reliability, high-energy, polarity-agnostic protection where manual assembly or serviceability matters.
Availability
1.5KE24C-E3/73 is available at Aetrix Electronics and suitable for industrial motor drives, automotive BCMs, telecom line interfaces, and consumer appliance power rails requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE24C-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, TVS devices, and optoelectronics with emphasis on reliability, power handling, and automotive-grade qualification.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting applications demanding >1 kW surge immunity, wide temperature operation, and UL/IEC-certifiable robustness in industrial and transportation systems.
FAQ
What is the breakdown voltage tolerance for 1.5KE24C-E3/73?
The 1.5KE24C-E3/73 has a specified breakdown voltage range of 22.8 V to 25.2 V at test current IT = 1.0 mA, representing a ±5% tolerance around the nominal 24 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes, critical for coordinating with downstream overvoltage protection thresholds in 24 V systems.
Is 1.5KE24C-E3/73 RoHS compliant and halogen-free?
Yes, the 1.5KE24C-E3/73 carries the "E3" suffix, indicating full RoHS compliance per Directive 2011/65/EU and halogen-free status per IEC 61249-2-21. The epoxy molding compound meets UL 94 V-0 flammability rating, and matte tin-plated leads satisfy JESD 201 Class 1A whisker resistance requirements.
Can 1.5KE24C-E3/73 be used in automotive applications?
The 1.5KE24C-E3/73 itself is commercial-grade, but its variant 1.5KE24CAHE3_B is AEC-Q101 qualified for automotive use. Engineers selecting 1.5KE24C-E3/73 for automotive designs should verify system-level qualification requirements - the base part shares identical electrical specs and thermal performance, but formal AEC-Q101 certification applies only to the HE3-suffixed version.
What is the maximum clamping voltage of 1.5KE24C-E3/73 under surge conditions?
The 1.5KE24C-E3/73 clamps to a maximum of 33.2 V when subjected to its rated peak pulse current of 45.2 A (10/1000 µs waveform). This VC value is measured at the device terminals and represents the worst-case voltage seen by protected circuitry during a full 1500 W transient event.
How does the bidirectional nature of 1.5KE24C-E3/73 affect PCB layout?
Because 1.5KE24C-E3/73 is bidirectional, it has no polarity marking and can be installed in either orientation across a differential or floating node - eliminating orientation checks during assembly and enabling use on AC-coupled lines like telecom interfaces or transformer secondaries. Layout requires symmetric trace routing and adequate copper area for thermal relief, especially given its RθJL = 15.4 °C/W dependency on 0.375" lead length.
1.5KE24C-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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 19.4V
- Voltage - Breakdown (Min):
- 21.6V
- Voltage - Clamping (Max) @ Ipp:
- 34.7V
- Current - Peak Pulse (10/1000µs):
- 43.2A
- 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
1.5KE24C-E3/73 FAQ
1.How can I place an order for 1.5KE24C-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE24C-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 1.5KE24C-E3/73 reliable?
The price and inventory of 1.5KE24C-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 1.5KE24C-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE24C-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE24C-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE24C-E3/73?
1.5KE24C-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE24C-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 1.5KE24C-E3/73?
For technical support, including 1.5KE24C-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE24C-E3/73 requirements.
6.How does Aetrix verify that 1.5KE24C-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE24C-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 1.5KE24C-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE24C-E3/73?
All 1.5KE24C-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE24C-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 1.5KE24C-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE24C-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE24C-E3/73 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
