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Vishay General Semiconductor - Diodes Division SMBJ24CHE3/52
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- Part No.:
- SMBJ24CHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ24CHE3/52.pdf
- Description:
- TVS DIODE 24VWM 43VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,637
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Product details
Overview
SMBJ24CHE3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed to protect sensitive electronics against ESD, lightning-induced surges, and inductive switching transients. It features a 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR) at 1 mA, 38.9 V maximum clamping voltage (VC) at 15.4 A peak pulse current, and 600 W peak pulse power rating with a 10/1000 µs waveform.
For engineers reviewing the SMBJ24CHE3/52 datasheet, SMBJ24CHE3/52 pinout, SMBJ24CHE3/52 application, or SMBJ24CHE3/52 equivalent, this device is selected for robust overvoltage protection on DC power rails, MOSFET gate drivers, and sensor signal lines in automotive, industrial, and telecom systems where AEC-Q101 qualification, low clamping ratio, and fast response (<1 ns) are critical.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, conducting only in reverse bias above VBR while remaining high-impedance below VWM. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at 24 V), and its thermal resistance (RθJA = 100 °C/W) supports operation up to +150 °C junction temperature.
The SMBJ24CHE3/52 is AEC-Q101 qualified and RoHS-compliant, with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Its MSL Level 1 rating (peak reflow 260 °C) enables compatibility with standard SMT assembly processes without moisture sensitivity concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 24 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin. |
| VBR (Breakdown Voltage) | 26.7–29.5 V at 1 mA - Guaranteed avalanche initiation range; ensures predictable turn-on under surge conditions. |
| VC (Clamping Voltage) | 38.9 V at IPPM = 15.4 A - Peak voltage seen by protected circuit during 600 W transient; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 600 W (10/1000 µs) - Surge energy handling capacity; validates protection against IEC 61000-4-5 Level 4 surges. |
| IPPM (Peak Pulse Current) | 15.4 A - Maximum non-repetitive surge current the device can safely shunt without degradation. |
| TJmax | +150 °C - Maximum junction temperature; enables use in under-hood automotive and high-ambient industrial environments. |
| Leakage Current (ID) | <1.0 µA at 24 V - Minimal standby power loss and negligible loading on low-power sensor or control circuits. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking. Dimensions: 4.57 × 3.94 × 2.20 mm (L × W × H); terminals are matte tin-plated for reliable solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path / low-side reference | Connected to ground or lower-potential node; completes clamping path during reverse transient. |
| Cathode | Protected line connection / high-side input | Connected to the line being protected (e.g., 24 V rail or signal trace); polarity band identifies this terminal. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock per JESD22 standards. |
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-to-earth) in properly designed PCB layouts. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage overshoot during clamping, reducing risk of damage to downstream ICs like microcontrollers or transceivers. |
| Fast response time (<1 ns) | Engages before most semiconductor junctions fail, enabling effective protection of fast-switching MOSFETs and logic inputs. |
| MSL Level 1, 260 °C peak reflow | Eliminates pre-baking requirements and supports single-pass reflow assembly in high-volume manufacturing. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply lines in engine control units (ECUs) and body control modules (BCMs) against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between 24 V rail and chassis ground to divert surge energy away from PMICs and MCU power inputs. Use Value: Clamps transients to ≤38.9 V within nanoseconds, preventing latch-up or permanent damage to 3.3 V/5 V LDOs and digital controllers. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops or 0–10 V sensor outputs) in factory automation PLCs from EFT and ESD events. IC Role / Device Role / Timing Role: Low-leakage TVS connected across signal and return paths to absorb fast transients without affecting baseline accuracy. Use Value: Leakage <1.0 µA at 24 V ensures no measurable offset error in precision current-loop receivers or ADC front-ends. |
| MOSFET Gate Driver Protection | Telecom DC Power Input Protection |
|
Use Scenario: Safeguarding high-side N-channel MOSFET gate drive signals in motor drivers and power converters exposed to inductive kickback. IC Role / Device Role / Timing Role: TVS placed between gate and source to clamp negative-going spikes that could exceed gate oxide breakdown limits. Use Value: Sub-1 ns response prevents gate oxide rupture during rapid dV/dt events, preserving FET reliability over >100,000 switching cycles. |
Use Scenario: Front-end surge suppression on -48 V DC power inputs of telecom base station equipment compliant with GR-1089-CORE. IC Role / Device Role / Timing Role: Unidirectional TVS installed on the positive rail relative to system ground to handle longitudinal surges and lightning-induced common-mode transients. Use Value: 600 W rating and 38.9 V clamping enable compliance with Level 4 (4 kV/2 Ω) surge testing without derating or parallel staging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24AHE3/52 | No AEC-Q101 qualification; commercial-grade only; identical electrical specs and package. | Suitable for non-automotive industrial or consumer applications where automotive reliability certification is not required. | Select SMBJ24AHE3/52 when cost optimization is prioritized and AEC-Q101 is unnecessary. |
| SMAJ24AHE3/A | Lower 400 W PPPM; SMA (DO-214AC) package with smaller footprint (4.32 × 2.62 × 2.18 mm) and higher RθJA (140 °C/W). | Better suited for space-constrained designs with lower surge threat levels (e.g., USB ports or low-energy sensors). | Choose SMAJ24AHE3/A only if board area is critical and surge exposure does not exceed IEC 61000-4-5 Level 2. |
Compared with SMBJ24AHE3/52, the SMBJ24CHE3/52 adds automotive-grade qualification without sacrificing clamping performance or package compatibility; versus SMAJ24AHE3/A, it delivers 50 % higher surge power handling and superior thermal dissipation in the same mounting footprint family.
Availability
SMBJ24CHE3/52 is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, telecom power supplies, and sensor interface modules requiring stable component supply with full AEC-Q101 traceability and long-term production continuity.
Supply support for SMBJ24CHE3/52 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 performance.
The SMBJ series was developed to deliver high-power, low-clamping TVS protection in compact surface-mount packages for automotive, industrial, and communications systems demanding AEC-Q101 compliance and robust surge immunity.
FAQ
What is the clamping voltage of SMBJ24CHE3/52 at its rated peak pulse current?
The SMBJ24CHE3/52 has a maximum clamping voltage (VC) of 38.9 V at its rated peak pulse current (IPPM) of 15.4 A, measured using the standardized 10/1000 µs double-exponential surge waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during transient events. The SMBJ24CHE3/52 maintains this clamping performance without degradation when used within its specified derating curves.
Is SMBJ24CHE3/52 suitable for bidirectional transient protection?
No, SMBJ24CHE3/52 is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. It conducts only in reverse bias and must be oriented with cathode toward the protected line. For bidirectional protection, Vishay offers the SMBJ24CHE3/52-equivalent SMBJ24CHE3/52CA variant (with "CA" suffix), which provides symmetrical clamping in both polarities. Using SMBJ24CHE3/52 in bidirectional applications risks failure during positive-going transients.
Does SMBJ24CHE3/52 require a heatsink for standard operation?
No, SMBJ24CHE3/52 is designed for operation without an external heatsink under typical conditions. Its thermal resistance (RθJA = 100 °C/W) assumes mounting on minimum recommended copper pads (0.2" × 0.2" per terminal). At ambient temperatures up to +85 °C and with brief surge duty cycles (<0.01 %), self-heating remains within safe limits. Continuous power dissipation is limited to 5.0 W, but SMBJ24CHE3/52 is intended for transient-not steady-state-protection.
What does the "HE3" suffix signify in SMBJ24CHE3/52?
The "HE3" suffix in SMBJ24CHE3/52 indicates RoHS-compliant construction with AEC-Q101 qualification. "H" denotes automotive-grade qualification, "E3" specifies lead-free, halogen-free, and RoHS-compliant materials per JEDEC standards. The "/52" denotes packaging in 7" diameter tape-and-reel format with 750 units per reel. This full suffix confirms SMBJ24CHE3/52 meets automotive reliability requirements while maintaining compatibility with standard SMT assembly lines.
How does SMBJ24CHE3/52 compare to SMAJ24AHE3/A in terms of surge handling capability?
SMBJ24CHE3/52 delivers 600 W peak pulse power (10/1000 µs), whereas SMAJ24AHE3/A is rated for 400 W-50 % lower. This difference arises from the larger SMB (DO-214AA) package's superior thermal mass and lower junction-to-lead resistance (RθJL = 20 °C/W vs. ~30 °C/W for SMA). As a result, SMBJ24CHE3/52 sustains higher surge currents (15.4 A vs. 10.3 A) and is preferred for applications subject to IEC 61000-4-5 Level 4 or ISO 7637-2 Pulse 5a testing.
SMBJ24CHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 43V
- Current - Peak Pulse (10/1000µs):
- 14A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMBJ)
SMBJ24CHE3/52 FAQ
1.How can I place an order for SMBJ24CHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ24CHE3/52 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 SMBJ24CHE3/52 reliable?
The price and inventory of SMBJ24CHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ24CHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ24CHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ24CHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ24CHE3/52?
SMBJ24CHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ24CHE3/52 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 SMBJ24CHE3/52?
For technical support, including SMBJ24CHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ24CHE3/52 requirements.
6.How does Aetrix verify that SMBJ24CHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ24CHE3/52 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 SMBJ24CHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ24CHE3/52?
All SMBJ24CHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ24CHE3/52, 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 SMBJ24CHE3/52 part is unused and in its original packaging.
Return procedure for SMBJ24CHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ24CHE3/52 Tags
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