My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ24CAHE3_A/H
- Part No.:
- SMCJ24CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ24CAHE3_A/H.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,534
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ24CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients up to 1500 W peak pulse power with a 10/1000 μs waveform, 38.9 V maximum clamping voltage at 38.6 A peak pulse current, and 24 V stand-off voltage - deployed in automotive sensor signal lines, industrial I/O protection, and DC power rail surge suppression.
For engineers reviewing the SMCJ24CAHE3_A/H datasheet, SMCJ24CAHE3_A/H pinout, SMCJ24CAHE3_A/H application, or SMCJ24CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 1500 W PPPM rating, 24 V VWM, and SMC package compatibility with automated placement and high-reliability automotive PCB layouts.
Technical Context
This device operates as a bidirectional avalanche diode, leveraging glass-passivated junction technology to achieve sub-nanosecond response time and low incremental surge resistance. It conducts symmetrically in both polarities above its breakdown voltage range of 26.7–29.5 V at 1 mA test current, enabling robust protection against ESD, lightning-induced surges, and inductive switching transients without polarity sensitivity.
Thermally, it features a junction-to-lead thermal resistance of 15 °C/W and operates across –55 °C to +150 °C, with derating applied above 25 °C ambient per Figure 2. Its MSL Level 1 rating supports lead-free reflow up to 260 °C peak, and matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working margin. |
| VBR min/max | 26.7 V / 29.5 V at 1 mA - Breakdown occurs within this band; ensures predictable turn-on under transient stress. |
| VC @ IPPM | 38.9 V at 38.6 A - Clamped voltage during 10/1000 μs surge; determines protected circuit's maximum overvoltage exposure. |
| PPPM | 1500 W - Peak pulse power handling capacity; defines survivability against standardized lightning/surge waveforms. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial environments. |
| Package | SMC (DO-214AB) - Surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal design; supports automated assembly and high-power dissipation. |
Pinout & Package
SMCJ24CAHE3_A/H uses the SMC (DO-214AB) package: a two-terminal, bidirectional device with no polarity marking - both terminals are electrically symmetrical and interchangeable. The case is molded compound rated UL 94 V-0, with matte tin-plated leads suitable for J-STD-002-compliant soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no fixed polarity required in layout. |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; enables symmetric placement across differential or single-ended lines without orientation constraints. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal paths (e.g., CAN bus, RS-485) without external polarity management. |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, ADAS sensors, and body electronics requiring long-term reliability under thermal cycling and vibration. |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV surge) and ISO 7637-2 Pulse 1/2a/3a/5a transients when properly laid out with 8 mm × 8 mm copper pads. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage stress on downstream ICs - e.g., 38.9 V clamping protects 3.3 V/5 V/12 V logic interfaces with tight safety margins. |
| MSL Level 1, 260 °C peak | Supports standard lead-free reflow profiles without pre-baking; eliminates moisture-related popcorning risk in high-volume SMT production. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) from load dump and alternator ripple in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamps ± transients while preserving signal integrity on low-voltage differential lines. Use Value: Prevents latch-up or permanent damage to microcontrollers and analog front-ends during battery disconnect events or relay coil flyback. | Use Scenario: Shielding PLC digital input modules and fieldbus nodes (RS-485, Profibus) from induced surges in factory floor wiring. IC Role / Device Role / Timing Role: Fast-response shunt element that diverts >1 kA surge energy away from isolation barriers and level translators. Use Value: Maintains system uptime by eliminating false triggers and component failure caused by 2–4 kV EFT or lightning-coupled transients. |
| DC Power Rail Protection | Consumer Device USB Port |
Use Scenario: Safeguarding 24 V DC power distribution networks in robotics and automation equipment against inductive kickback from solenoids and motors. IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of DC-DC converters and LDOs to clamp overshoot before regulation stage. Use Value: Limits rail excursions to ≤39 V, preventing overvoltage shutdown or gate oxide stress in downstream MOSFET drivers and logic ICs. | Use Scenario: Adding secondary surge immunity to USB 2.0 data lines and VBUS in smart home hubs and portable medical devices. IC Role / Device Role / Timing Role: Low-capacitance bidirectional suppressor placed adjacent to USB connector to absorb ESD and hot-plug transients. Use Value: Passes IEC 61000-4-2 ±8 kV contact discharge without degrading signal rise/fall times or causing enumeration failures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24CAHE3_A/H | Lower PPPM (400 W), same VWM (24 V), SMA package (smaller footprint, lower thermal mass) | Not suitable for IEC 61000-4-5 Level 4; limited to board-level ESD and low-energy transients | Select when space-constrained and surge threat level is ≤1 kV; verify thermal derating for repeated pulses. |
| SMCJ24AHE3_A/H | Unidirectional version; same VWM, VC, and PPPM but requires correct polarity orientation in layout | Cannot protect AC or floating signals; unsuitable for CAN, RS-485, or transformer-coupled interfaces | Choose only for DC-only rails where polarity is fixed and cost-per-watt is prioritized over design flexibility. |
Compared with SMAJ24CAHE3_A/H and SMCJ24AHE3_A/H, the SMCJ24CAHE3_A/H delivers higher surge robustness in a polarity-agnostic form factor - making it optimal for automotive and industrial designs requiring AEC-Q101 compliance, 1500 W immunity, and layout simplicity without directional constraints.
Availability
SMCJ24CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and DC power rail surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMCJ24CAHE3_A/H 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, power efficiency, and automotive-grade qualification.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where AEC-Q101 validation and 1500 W surge resilience are mandatory.
FAQ
What does the "CA" suffix indicate in SMCJ24CAHE3_A/H?
The "CA" suffix denotes a bidirectional configuration - meaning SMCJ24CAHE3_A/H clamps voltage transients equally in both polarities, unlike unidirectional "A" variants. This eliminates polarity dependency during PCB layout and enables use on AC-coupled or floating signal lines such as CAN, RS-485, or transformer-isolated interfaces without orientation concerns. The device has no cathode marking, confirming its symmetrical terminal behavior.
Is SMCJ24CAHE3_A/H qualified for automotive applications?
Yes, SMCJ24CAHE3_A/H is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's SMCJ5.0A–SMCJ188CA datasheet (Rev. 09-Jan-2024). This qualification covers stress tests including temperature cycling, humidity bias HAST, and mechanical shock - validating its suitability for under-hood and chassis-mounted automotive systems like ADAS sensors, body control modules, and infotainment power supplies.
What is the maximum clamping voltage of SMCJ24CAHE3_A/H and how is it measured?
The maximum clamping voltage (VC) of SMCJ24CAHE3_A/H is 38.9 V, measured at a peak pulse current (IPPM) of 38.6 A using a standardized 10/1000 μs double-exponential surge waveform. This value represents the highest voltage the device allows across its terminals during worst-case transient conduction - critical for ensuring downstream components (e.g., microcontrollers, transceivers) remain within absolute maximum ratings during surge events.
How does the SMC (DO-214AB) package of SMCJ24CAHE3_A/H affect thermal performance?
The SMC (DO-214AB) package of SMCJ24CAHE3_A/H provides a junction-to-lead thermal resistance (RθJL) of 15 °C/W and requires minimum 8.0 mm × 8.0 mm copper pads per terminal for rated 1500 W pulse handling. Its larger footprint versus SMA/SMB improves heat spreading and reduces thermal impedance, enabling sustained operation at elevated ambient temperatures - especially important in automotive junction boxes and industrial motor drives where airflow is limited.
Can SMCJ24CAHE3_A/H replace SMCJ24AHE3_A/H in an existing design?
SMCJ24CAHE3_A/H can replace SMCJ24AHE3_A/H only if the circuit uses bidirectional or AC-coupled signals - because SMCJ24CAHE3_A/H is bidirectional while SMCJ24AHE3_A/H is unidirectional and polarity-sensitive. No PCB changes are needed for footprint or soldering, but layout must ensure no fixed polarity assumptions exist; otherwise, incorrect orientation of the unidirectional part could cause failure. Always verify signal topology before substitution.
SMCJ24CAHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 38.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ24CAHE3_A/H FAQ
1.How can I place an order for SMCJ24CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ24CAHE3_A/H 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 SMCJ24CAHE3_A/H reliable?
The price and inventory of SMCJ24CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ24CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ24CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ24CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ24CAHE3_A/H?
SMCJ24CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ24CAHE3_A/H 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 SMCJ24CAHE3_A/H?
For technical support, including SMCJ24CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ24CAHE3_A/H requirements.
6.How does Aetrix verify that SMCJ24CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ24CAHE3_A/H 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 SMCJ24CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ24CAHE3_A/H?
All SMCJ24CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ24CAHE3_A/H, 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 SMCJ24CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMCJ24CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ24CAHE3_A/H 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 …
