My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5KE24CHE3/54
- Part No.:
- 1.5KE24CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE24CHE3/54.pdf
- Description:
- TVS DIODE 19.4VWM 34.7VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:6,755
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE24CHE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection of DC power rails and signal lines. It features a 24 V breakdown voltage (VBR = 22.8–25.2 V at 1.0 mA), 20.5 V maximum working voltage (VWM), 33.2 V clamping voltage (VC) at 45.2 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used in automotive power supply input stages and industrial sensor interface protection.
For engineers reviewing the 1.5KE24CHE3/54 datasheet, 1.5KE24CHE3/54 pinout, 1.5KE24CHE3/54 application, or 1.5KE24CHE3/54 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and real-world clamping behavior under transient surge conditions.
Technical Context
The 1.5KE24CHE3/54 operates as a silicon avalanche diode with glass-passivated junction, delivering sub-nanosecond response time (<1 ns) to transient events. Its unidirectional polarity uses a cathode band marking, and it sustains 200 A non-repetitive forward surge current (IFSM) per 8.3 ms half-sine wave while maintaining low incremental surge resistance.
Clamping performance is defined by VC = 33.2 V at IPPM = 45.2 A (10/1000 µs), with temperature coefficient of VBR at +0.094 %/°C. The device is rated for operation from –55 °C to +175 °C junction temperature and meets UL 94 V-0 flammability requirements in its molded epoxy case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.8 V / 25.2 V at 1.0 mA - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| VWM | 20.5 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 33.2 V at 45.2 A - clamped voltage during 1500 W transient, limiting downstream IC stress |
| PPPM | 1500 W - peak pulse power handling with 10/1000 µs waveform, enabling robust lightning/ESD immunity |
| IFSM | 200 A - surge current tolerance for inductive switch-off transients without failure |
| TJ range | –55 °C to +175 °C - supports under-hood automotive and high-temp industrial environments |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, guiding heatsinking requirements |
Pinout & Package
Package: JEDEC DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102 solderability standards. Cathode identified by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path) in unidirectional TVS configuration |
| Cathode | Avalanche clamping terminal | Marked with band; connected to protected line (e.g., 24 V rail) to clamp positive transients to VC |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repetitive surge stress |
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly mounted on PCB with low-inductance layout |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics applications requiring zero defect field performance |
| UL 94 V-0 molding compound | Prevents flame propagation in fault conditions, meeting safety-critical enclosure requirements |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage overshoot during fast transients, protecting 24 V-rated MOSFETs and microcontrollers |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 24 V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping device placed at board entry point, shunting surge energy before DC-DC converters and MCU power supplies. Use Value: Limits transient voltage to ≤33.2 V, preventing damage to 36 V max-input buck regulators and 5 V LDOs downstream. | Use Scenario: 4–20 mA current loop transmitters in factory automation subject to EFT (IEC 61000-4-4) and induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed across analog input terminals to suppress positive-going transients on signal lines. Use Value: Clamps 4 kV ESD events within <1 ns, preserving 16-bit ADC accuracy and avoiding latch-up in op-amp front-ends. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Inputs |
Use Scenario: Remote radio head power inputs receiving 24–48 V DC over long cables susceptible to lightning-induced surges. IC Role / Device Role / Timing Role: First-line defense in multi-stage protection scheme, coordinated with GDT and series impedance. Use Value: Absorbs up to 1500 W of surge energy without degradation, maintaining system uptime during outdoor deployment. | Use Scenario: Brushed DC motor control boards in washing machines where commutation spikes exceed 100 V. IC Role / Device Role / Timing Role: Mounted across H-bridge supply rails to clamp inductive kickback from motor windings. Use Value: Withstands 200 A surge current (8.3 ms), eliminating need for external snubbers and reducing BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Lower PPPM (600 W), smaller SMB package (vs. DO-201AD), higher VC/VBR ratio (1.53) | Best suited for space-constrained consumer PCBs; not rated for AEC-Q101 or 200 A IFSM | Select when footprint area is critical and surge energy is ≤600 W; verify thermal derating for continuous operation. |
| 1.5KE24A-E3/54 | Same electrical specs and DO-201AD package, but commercial-grade (non-AEC-Q101 qualified) | Acceptable for industrial controls or test equipment where automotive qualification is not required | Choose for cost-sensitive non-automotive designs; identical clamping and thermal performance but no automotive reliability validation. |
Compared with SMBJ24A and 1.5KE24A-E3/54, the 1.5KE24CHE3/54 uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and 200 A IFSM in the rugged DO-201AD package - making it the only option qualified for under-hood automotive use with full load-dump immunity.
Availability
1.5KE24CHE3/54 is available at Aetrix Electronics and suitable for automotive power systems, industrial sensor interfaces, telecom DC feeds, and appliance motor drive circuits requiring stable component supply across extended production lifecycles.
Supply support for 1.5KE24CHE3/54 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 high-reliability diodes, MOSFETs, and optoelectronics for demanding industrial and automotive applications.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting ISO 7637-2, IEC 61000-4-5, and AEC-Q101-compliant systems where failure is not an option.
FAQ
What is the breakdown voltage tolerance of the 1.5KE24CHE3/54?
The 1.5KE24CHE3/54 has a specified breakdown voltage range of 22.8 V to 25.2 V at 1.0 mA test current, representing ±5% tolerance around the nominal 24 V rating. This tight VBR window ensures consistent clamping onset across production lots and enables predictable coordination with downstream overvoltage protection circuits in designs using the 1.5KE24CHE3/54.
Is the 1.5KE24CHE3/54 qualified for automotive applications?
Yes, the 1.5KE24CHE3/54 carries AEC-Q101 qualification (per note 2 on page 3 of Vishay document 88301), confirming its suitability for automotive powertrain, body electronics, and chassis systems. This qualification includes stress testing for temperature cycling, humidity bias, and mechanical shock - validating long-term reliability of the 1.5KE24CHE3/54 in vehicle environments.
What is the maximum clamping voltage of the 1.5KE24CHE3/54 under surge conditions?
The 1.5KE24CHE3/54 exhibits a maximum clamping voltage (VC) of 33.2 V when subjected to its rated peak pulse current of 45.2 A using the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during transient events, directly informing safe operating margins for components downstream of the 1.5KE24CHE3/54.
Does the 1.5KE24CHE3/54 have a bidirectional variant?
No - the 1.5KE24CHE3/54 is strictly unidirectional. Bidirectional variants in the 1.5KE family use the "CA" suffix (e.g., 1.5KE24CA), and the datasheet explicitly states that bidirectional types are available only from 1.5KE6.8CA to 1.5KE220CA. Since 24 V falls within that range, the bidirectional counterpart would be 1.5KE24CA, not 1.5KE24CHE3/54.
What packaging format is supplied for the 1.5KE24CHE3/54?
The 1.5KE24CHE3/54 is supplied in 13-inch diameter paper tape and reel packaging, with a base quantity of 1400 units per reel (ordering code "/54" denotes this reel size). The device uses axial leads in JEDEC DO-201AD case style, and the "HE3" suffix confirms RoHS compliance and AEC-Q101 qualification - all verified in Vishay's official ordering information table for the 1.5KE24CHE3/54.
1.5KE24CHE3/54 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:
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE24CHE3/54 FAQ
1.How can I place an order for 1.5KE24CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE24CHE3/54 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 1.5KE24CHE3/54 reliable?
The price and inventory of 1.5KE24CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE24CHE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE24CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE24CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE24CHE3/54?
1.5KE24CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE24CHE3/54 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 1.5KE24CHE3/54?
For technical support, including 1.5KE24CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE24CHE3/54 requirements.
6.How does Aetrix verify that 1.5KE24CHE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE24CHE3/54 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 1.5KE24CHE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE24CHE3/54?
All 1.5KE24CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE24CHE3/54, 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 1.5KE24CHE3/54 part is unused and in its original packaging.
Return procedure for 1.5KE24CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE24CHE3/54 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 …
