My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5KE24CAHE3_B/C
- Part No.:
- 1.5KE24CAHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE24CAHE3_B/C.pdf
- Description:
- 1.5KW,24V 5%,BIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,676
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE24CAHE3_B/C 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 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. It is used to protect MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching surges in automotive and industrial systems.
For engineers reviewing the 1.5KE24CAHE3_B/C datasheet, 1.5KE24CAHE3_B/C pinout, 1.5KE24CAHE3_B/C application, or 1.5KE24CAHE3_B/C equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, clamping performance under standardized surge waveforms, thermal resistance data, and direct alternative part comparisons - all grounded in Vishay's official 88301 specification.
Technical Context
This bidirectional TVS diode employs a glass-passivated silicon junction with low incremental surge resistance and sub-nanosecond response time (<1 ns). Its symmetrical clamping behavior applies equally in both polarities, enabling use without polarity awareness on AC lines or differential signal paths.
Rated for 1500 W peak pulse power per 10/1000 µs waveform at 0.01% duty cycle, it delivers stable clamping up to 33.2 V at 45.2 A while maintaining a 20.5 V stand-off voltage (VWM) and <1.0 µA reverse leakage at rated VWM. Thermal design is supported by RθJL = 15.4 °C/W (junction-to-lead) and RθJA = 75 °C/W (junction-to-ambient).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.8 V / 25.2 V at 1.0 mA - defines precise voltage threshold where clamping initiates reliably |
| VWM | 20.5 V - maximum continuous working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 33.2 V at 45.2 A - clamped voltage during full 1500 W transient, limiting stress on downstream components |
| PPPM | 1500 W - peak surge power handling capability using standard 10/1000 µs waveform |
| TJ range | –55 °C to +175 °C - enables deployment in under-hood automotive and high-temp industrial environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with matte tin-plated leads, UL 94 V-0 molding |
Pinout & Package
1.5KE24CAHE3_B/C uses an axial-leaded DO-201AD (Case Style 1.5KE) package with no polarity marking - consistent with its bidirectional function. Leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102. The device has two terminals only, electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional current path | No cathode band; either lead serves as input/output - simplifies PCB layout on AC or floating lines |
| Lead 1 / Lead 2 | Thermal and electrical interface | Jointly conduct surge current and dissipate heat; RθJL = 15.4 °C/W supports lead-mounted thermal management |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance (±5%) and long-term reliability under humidity and thermal stress |
| 1500 W peak pulse power (10/1000 µs) | Withstands high-energy transients common in 12 V/24 V automotive power nets and industrial motor drives |
| Sub-nanosecond response time | Clamps within <1 ns - faster than MOVs or gas discharge tubes, protecting sensitive CMOS inputs |
| AEC-Q101 qualified (HE3_B suffix) | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| RoHS-compliant, JESD 201 Class 2 whisker resistance | Ensures solder joint integrity in reflow and long-term operation without tin whisker growth risk |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and body control module power rails from load dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across 12 V supply rail upstream of LDOs and CAN/LIN ICs. Use Value: Limits rail voltage to ≤33.2 V during 1500 W surges, preventing latch-up or gate oxide damage in protected ICs. |
Use Scenario: Safeguarding 4–20 mA current loop analog inputs in PLC I/O modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Parallel-connected TVS on signal line and return path to clamp differential and common-mode transients. Use Value: Maintains signal integrity by clamping transients before they exceed ADC input absolute maximum ratings (e.g., ±36 V). |
| Telecom DSL Line Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding ADSL/VDSL line drivers and receivers from lightning-induced surges on outdoor copper pairs. IC Role / Device Role / Timing Role: Primary protection device mounted at line entry point, coordinated with secondary GDT or polymer PTC. Use Value: Responds in <1 ns to divert >45 A surges while holding clamped voltage below IC damage thresholds per ITU-T K.20/K.21. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Mounted across motor terminals to absorb energy from flyback voltage spikes during PWM commutation. Use Value: Absorbs 1500 W pulses without degradation, eliminating need for snubber RC networks 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 |
|---|---|---|---|
| SMBJ24CA | DO-214AA package (SMB), lower PPPM = 600 W, same VBR range (22.8–25.2 V), higher IPPM derating above 25 °C | Suitable for space-constrained PCBs but not for 1500 W surge events; requires parallel devices for equivalent energy handling | Select when board area is critical and surge energy is ≤600 W; verify thermal margin with RθJA = 110 °C/W |
| 1.5SMC24CA | Surface-mount SMC package, identical 1500 W rating and VBR, but RθJA = 100 °C/W vs. 75 °C/W for 1.5KE24CAHE3_B/C | Better for automated assembly but less effective in high-ambient-temperature environments without heatsinking | Prefer for reflow-only production; add thermal relief pads if operating near TJ max of 175 °C |
Compared with SMBJ24CA and 1.5SMC24CA, the 1.5KE24CAHE3_B/C offers superior thermal performance (RθJA = 75 °C/W) and proven axial-lead robustness for high-reliability through-hole mounting - making it optimal for automotive under-hood and industrial power supply designs where sustained surge duty and thermal stability are critical.
Availability
1.5KE24CAHE3_B/C is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, telecom line guarding, and consumer appliance motor drive circuits requiring stable component supply and AEC-Q101 compliance.
Supply support for 1.5KE24CAHE3_B/C 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5KE family was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure due to voltage surges must be eliminated.
FAQ
What is the clamping voltage of the 1.5KE24CAHE3_B/C at its rated peak pulse current?
The 1.5KE24CAHE3_B/C clamps to a maximum of 33.2 V at its peak pulse current of 45.2 A, measured under the standard 10/1000 µs waveform. This value ensures downstream ICs and MOSFETs remain within safe operating voltage limits during surge events. The 1.5KE24CAHE3_B/C achieves this with low incremental surge resistance and symmetrical bidirectional conduction.
Is the 1.5KE24CAHE3_B/C suitable for automotive applications?
Yes, the 1.5KE24CAHE3_B/C carries the HE3_B suffix, indicating AEC-Q101 qualification per Vishay Document 88301. It is rated for operation from –55 °C to +175 °C and validated for temperature cycling, highly accelerated life testing, and ESD robustness - making the 1.5KE24CAHE3_B/C appropriate for engine control units, body electronics, and ADAS sensor protection.
How does the bidirectional nature of the 1.5KE24CAHE3_B/C affect its circuit placement?
The 1.5KE24CAHE3_B/C has no polarity marking and conducts identically in both directions, allowing placement across AC lines, differential signal pairs, or ungrounded power rails without orientation concerns. This eliminates risk of incorrect installation and simplifies layout - unlike unidirectional TVS diodes such as 1.5KE24A, which require cathode alignment.
What is the standoff voltage (VWM) of the 1.5KE24CAHE3_B/C, and why does it matter?
The 1.5KE24CAHE3_B/C has a maximum working voltage (VWM) of 20.5 V, meaning it remains in high-impedance state below this level with leakage <1.0 µA. This margin (20.5 V vs. nominal 12 V or 24 V systems) prevents false triggering during normal operation while ensuring fast transition into clamping mode when transients exceed VBR.
Can the 1.5KE24CAHE3_B/C be used in parallel to increase surge handling capacity?
While the 1.5KE24CAHE3_B/C may be paralleled, Vishay does not recommend it without external current-sharing resistors due to VBR tolerance (±5%) causing uneven current division. For higher energy requirements, select a single higher-rated device (e.g., 1.5KE27CA) or verify matched-bin pairing - the 1.5KE24CAHE3_B/C is optimized for standalone 1500 W protection.
1.5KE24CAHE3_B/C 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 47A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE24CAHE3_B/C FAQ
1.How can I place an order for 1.5KE24CAHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE24CAHE3_B/C 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 1.5KE24CAHE3_B/C reliable?
The price and inventory of 1.5KE24CAHE3_B/C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE24CAHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE24CAHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE24CAHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE24CAHE3_B/C?
1.5KE24CAHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE24CAHE3_B/C 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 1.5KE24CAHE3_B/C?
For technical support, including 1.5KE24CAHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE24CAHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE24CAHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE24CAHE3_B/C 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 1.5KE24CAHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE24CAHE3_B/C?
All 1.5KE24CAHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE24CAHE3_B/C, 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 1.5KE24CAHE3_B/C part is unused and in its original packaging.
Return procedure for 1.5KE24CAHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE24CAHE3_B/C 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 …
