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Vishay General Semiconductor - Diodes Division SMBJ24C-E3/52
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- Part No.:
- SMBJ24C-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ24C-E3/52.pdf
- Description:
- TVS DIODE 24VWM 43VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,919
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Product details
Overview
SMBJ24C-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. 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 10/1000 µs waveform - deployed on power rails and I/O lines in industrial motor drives.
For engineers reviewing the SMBJ24C-E3/52 datasheet, SMBJ24C-E3/52 pinout, SMBJ24C-E3/52 application, or SMBJ24C-E3/52 equivalent, key selection criteria include clamping performance under 15.4 A surge, thermal resistance (RθJA = 100 °C/W), RoHS-compliant matte tin plating, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device: reverse-biased during normal operation (blocking up to 24 V), then avalanche-conducting within nanoseconds when transient voltage exceeds VBR. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance.
It delivers 600 W peak pulse power handling per 10/1000 µs waveform at TA = 25 °C, derates linearly above 25 °C per Fig. 2, and supports repetitive surges at 0.01 % duty cycle. Junction temperature range spans –55 °C to +150 °C, with thermal resistance RθJL = 20 °C/W to lead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe operating margin below clamping threshold. |
| VBR min/max | 26.7 V / 29.5 V at IT = 1 mA - Confirmed breakdown range ensuring reliable turn-on during transients without premature conduction. |
| VC @ IPPM | 38.9 V at 15.4 A - Clamped voltage seen by protected circuit during full-rated 600 W surge; determines downstream component stress. |
| PPPM | 600 W - Peak pulse power dissipation capability with 10/1000 µs waveform; validates suitability for IEC 61000-4-5 Level 4 surges. |
| IPPM | 15.4 A - Peak pulse current corresponding to VC = 38.9 V; used to size PCB trace width and verify layout survivability. |
| TJ max | +150 °C - Maximum junction temperature; sets thermal design limits for ambient + power dissipation + RθJA = 100 °C/W. |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with cathode band marking; compatible with JEDEC MS-012AC. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-impedance return path; completes clamping loop during transient events. |
| Cathode | High-side connection point | Connected to protected line (e.g., 24 V rail or signal); carries surge current into anode during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Validated for IEC 61000-4-5 surge immunity testing with 10/1000 µs waveform and 0.01 % duty cycle. |
| Fast response time | < 1.0 ns typical turn-on delay enables protection of high-speed interfaces and microcontroller I/O pins. |
| Glass passivated junction | Ensures stable VBR tolerance (±5 %), low leakage (< 1 µA at VWM), and long-term reliability under thermal cycling. |
| MSL Level 1 compliance | Rated for unlimited floor life at ≤ 30 °C / 60 % RH; no bake required prior to reflow soldering at peak 260 °C. |
| RoHS-compliant, commercial grade | E3 suffix denotes lead-free, halogen-free (per IEC 61249-2-21), and JESD201 Class 2 whisker resistance. |
Applications
| Industrial Motor Drive Power Rails | Automotive Body Control Module (BCM) Inputs |
|---|---|
|
Use Scenario: Protection of 24 V DC input rails against load dump and inductive switching spikes in PLC-controlled motor starters. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 24 V supply and chassis ground to clamp transients exceeding 38.9 V. Use Value: Limits voltage stress on upstream DC-DC converters and downstream logic ICs to safe levels during 15.4 A surges. |
Use Scenario: Guarding LIN bus or sensor inputs in BCMs against battery reversal and jump-start induced transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V/24 V supply lines, conducting only during >26.7 V events with sub-ns response. Use Value: Prevents latch-up and gate oxide damage in automotive-grade MCUs and CAN/LIN transceivers. |
| Telecom Power Supply Outputs | Industrial Sensor Signal Conditioning Circuits |
|
Use Scenario: Secondary-side overvoltage suppression on isolated 24 V telecom power supplies exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Clamp device mounted directly at output connector to minimize inductive loop area and suppress ringing. Use Value: Maintains regulated output integrity by limiting post-regulator voltage excursions to ≤38.9 V during 600 W pulses. |
Use Scenario: Protecting analog front-end inputs of 4–20 mA current loop receivers from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (typ. 150 pF at 0 V) unidirectional TVS shunting transients to ground before op-amp inputs. Use Value: Preserves signal fidelity by clamping <100 ns transients without loading 24 V sensor supply rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A-E3/52 | Same VWM (24 V), identical VBR and VC specs, but unmarked cathode band per Vishay ordering code convention. | No functional difference; SMBJ24C-E3/52 includes explicit "C" suffix denoting cathode band marking per DO-214AA standard. | Select SMBJ24C-E3/52 when visual polarity verification during manual inspection or rework is required. |
| SMCJ24A-E3/52 | Same electrical specs but larger SMC (DO-214AB) package; 1000 W PPPM, lower RθJA (65 °C/W), higher IPPM (32.9 A). | Used where higher surge margin or improved thermal performance is needed; requires larger PCB footprint and different pad layout. | Choose SMBJ24C-E3/52 for space-constrained designs needing 600 W protection in minimal SMB footprint. |
Compared with SMBJ24A-E3/52, SMBJ24C-E3/52 provides identical clamping performance with guaranteed cathode band visibility; versus SMCJ24A-E3/52, it trades 40 % lower surge rating for 35 % smaller board area and compatibility with fine-pitch SMT lines.
Availability
SMBJ24C-E3/52 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, telecom power systems, and sensor interface circuits requiring stable component supply across extended production lifecycles.
Supply support for SMBJ24C-E3/52 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, precision, and application-specific optimization.
The SMBJ series targets cost-sensitive, high-volume industrial and automotive applications where standardized SMB packaging, 600 W surge capability, and AEC-Q101 qualification options meet stringent EMI and thermal requirements.
FAQ
What is the clamping voltage of SMBJ24C-E3/52 at its rated peak pulse current?
The SMBJ24C-E3/52 has a maximum clamping voltage (VC) of 38.9 V at 15.4 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value defines the upper voltage limit imposed on protected circuitry during full-rated transient events and is measured per ANSI/IEEE C62.35 standards. The SMBJ24C-E3/52 maintains this clamping performance across its specified operating temperature range.
Is SMBJ24C-E3/52 RoHS-compliant and lead-free?
Yes, SMBJ24C-E3/52 is RoHS-compliant and lead-free, as confirmed by the "E3" suffix in its ordering code. It meets JESD201 Class 2 whisker resistance requirements and uses matte tin-plated leads solderable per J-STD-002 and JESD22-B102. The molding compound complies with UL 94 V-0 flammability rating, and the device is categorized as halogen-free per Vishay's material compliance documentation.
What does the "C" in SMBJ24C-E3/52 signify?
The "C" in SMBJ24C-E3/52 explicitly denotes cathode band marking on the SMB (DO-214AA) package, distinguishing it from the base SMBJ24A-E3/52 variant. This marking ensures unambiguous polarity identification during visual inspection, manual assembly, or rework - critical for correct orientation in unidirectional TVS applications. The cathode band aligns with the standard DO-214AA mechanical outline shown in Vishay document 88392.
Can SMBJ24C-E3/52 be used in automotive applications?
SMBJ24C-E3/52 is qualified for commercial-grade operation (–55 °C to +150 °C), but not AEC-Q101 certified. For automotive use, Vishay offers the AEC-Q101-qualified variant SMBJ24CHE3_B/H (with HE3 suffix). While SMBJ24C-E3/52 may function in non-safety-critical automotive subsystems, designers must validate reliability under vehicle-specific stress profiles; the SMBJ24C-E3/52 itself is not automotive-qualified.
What is the thermal resistance of SMBJ24C-E3/52 and how does it affect layout?
SMBJ24C-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value dictates minimum copper area required to maintain TJ ≤ 150 °C under worst-case power dissipation. Layouts must provide adequate thermal relief and avoid narrow traces; doubling pad area reduces RθJA by ~20 %, directly improving surge endurance of the SMBJ24C-E3/52.
SMBJ24C-E3/52 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ24C-E3/52 FAQ
1.How can I place an order for SMBJ24C-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ24C-E3/52 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 SMBJ24C-E3/52 reliable?
The price and inventory of SMBJ24C-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ24C-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ24C-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ24C-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ24C-E3/52?
SMBJ24C-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ24C-E3/52 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 SMBJ24C-E3/52?
For technical support, including SMBJ24C-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ24C-E3/52 requirements.
6.How does Aetrix verify that SMBJ24C-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ24C-E3/52 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 SMBJ24C-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ24C-E3/52?
All SMBJ24C-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ24C-E3/52, 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 SMBJ24C-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ24C-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ24C-E3/52 Tags
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