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Vishay General Semiconductor - Diodes Division SMB10J24A-E3/5B
- Part No.:
- SMB10J24A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J24A-E3/5B.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMB10J24A-E3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR), 38.9 V clamping voltage (VC) at 25.7 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMB10J24A-E3/5B datasheet, SMB10J24A-E3/5B pinout, SMB10J24A-E3/5B application, or SMB10J24A-E3/5B equivalent, key selection criteria include clamping performance under 25.7 A surge, AEC-Q101 qualification status, RoHS-compliant E3 suffix, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below 24 V (VWM), triggers avalanche conduction at 26.7–29.5 V (VBR @ 1 mA), and limits transients to ≤38.9 V (VC) during 1000 W surges. Its glass-passivated junction ensures stable breakdown and low leakage (<1 µA at VWM).
Thermal design relies on RθJA = 72 °C/W and RθJL = 20 °C/W, requiring minimum 0.2" × 0.2" copper pads per terminal for rated 1000 W dissipation. It meets MSL Level 1 (260 °C reflow) and AEC-Q101 for automotive underhood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe DC rail margin. |
| VBR min/max | 26.7 V / 29.5 V at 1 mA - guaranteed avalanche initiation range; ensures consistent turn-on across temperature and lot. |
| VC @ IPPM | 38.9 V at 25.7 A - clamped voltage during full 1000 W surge; determines protected IC's maximum transient stress. |
| PPPM | 1000 W (10/1000 µs) - peak transient energy handling capacity; validated with derating above 25 °C per Fig. 2. |
| IFSM | 100 A (8.3 ms half-sine) - non-repetitive forward surge rating; supports inrush or fault-current events in power circuits. |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments. |
| Polarity | Unidirectional - cathode marked by band; blocks reverse current until breakdown, ideal for DC rail protection. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to protected circuit ground or low-side reference; carries full IPPM during clamping. |
| Cathode | Avalanche conduction node / high-side connection | Connected to line being protected (e.g., 24 V rail); voltage referenced to anode during transient suppression. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood use including temperature cycling, humidity, and mechanical shock per AEC standard. |
| Glass passivated junction | Ensures stable VBR over time and temperature, low leakage (<1 µA), and resistance to moisture-induced degradation. |
| MSL Level 1 | Rated for peak reflow of 260 °C - compatible with standard lead-free SMT assembly without pre-baking. |
| Low incremental surge resistance | Enables tight VC-VBR margin (ΔV = 12.2 V), minimizing voltage overshoot during fast transients like ISO 7637-2 pulses. |
| Automated placement optimized | Standard SMB footprint and lead geometry support high-yield pick-and-place with vision alignment. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: 24 V battery-fed ECUs exposed to load dump (ISO 16750-2) and jump-start surges. IC Role / Device Role / Timing Role: Shunt TVS placed between 24 V rail and chassis ground to clamp transients before they reach LDOs and microcontrollers. Use Value: Limits voltage to ≤38.9 V during 1000 W surges, protecting downstream 36 V-rated regulators and ensuring ASIL-B system robustness. |
Use Scenario: Analog output lines (e.g., 4–20 mA current loops) in factory automation sensors subject to ESD and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS placed across signal and return, referenced to local ground. Use Value: Clamps ±38.9 V transients while maintaining <1 µA leakage at 24 V, preserving signal integrity and ADC accuracy. |
| Telecom DC Power Interface | Consumer Device USB Power Rail |
|
Use Scenario: -48 V telecom rectifier outputs feeding PoE injectors, vulnerable to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Unidirectional TVS installed on input side of DC-DC converter, with cathode to -48 V rail. Use Value: Absorbs 1000 W surges with 38.9 V clamping, preventing damage to isolated gate drivers and feedback optocouplers. |
Use Scenario: 5 V USB-C power delivery paths in portable audio devices, where hot-plug and cable ESD cause repetitive 8 kV HBM events. IC Role / Device Role / Timing Role: TVS mounted at USB connector, cathode to VBUS, anode to GND, suppressing fast-rising transients. Use Value: Responds in <1 ps to clamp sub-100 ns ESD spikes, with 1 µA leakage preserving battery life in standby mode. |
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-E3/5B | Same SMB package, identical VWM/VBR/VC ratings, but rated for 600 W PPPM (vs. 1000 W). | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); insufficient for ISO 7637-2 load dump. | Select when cost sensitivity outweighs surge margin, and system-level testing confirms 600 W sufficiency. |
| SMD10T24A | Higher 1500 W PPPM, same VWM/VC, but in larger SMC (DO-214AB) package - 2.5× PCB area. | Required for extreme surge environments (e.g., railway traction control), but incompatible with dense layouts. | Choose only if 1000 W margin is inadequate and board space allows SMC footprint. |
Compared with SMBJ24A-E3/5B and SMD10T24A, SMB10J24A-E3/5B uniquely balances 1000 W surge capability, AEC-Q101 qualification, and compact SMB footprint - making it optimal for space-constrained automotive and industrial 24 V systems where both reliability and layout density matter.
Availability
SMB10J24A-E3/5B is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor modules, and telecom power interface designs requiring stable component supply with AEC-Q101 assurance and RoHS compliance.
Supply support for SMB10J24A-E3/5B 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The SMB10J series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-power-density transient suppression in harsh-environment applications including automotive power distribution and industrial automation.
FAQ
What is the clamping voltage of SMB10J24A-E3/5B at its rated peak pulse current?
The SMB10J24A-E3/5B has a maximum clamping voltage (VC) of 38.9 V at its peak pulse current (IPPM) of 25.7 A, measured with a 10/1000 µs waveform. This value is critical for ensuring downstream ICs - such as 36 V-rated voltage regulators - remain within safe operating limits during surge events. The SMB10J24A-E3/5B achieves this clamping performance while maintaining low incremental resistance, directly supporting robust system-level EMC compliance.
Is SMB10J24A-E3/5B qualified for automotive applications?
Yes, SMB10J24A-E3/5B is AEC-Q101 qualified, as confirmed by Vishay's documentation (Document Number 88422, Revision 09-Jan-2024). This qualification covers stress tests including temperature cycling, humidity bias, mechanical shock, and high-temperature operating life - validating its suitability for under-hood and body-control module applications. The "HE3" variant is explicitly AEC-Q101 rated; however, the E3 suffix in SMB10J24A-E3/5B denotes RoHS-compliant commercial grade, and the part number itself falls within the AEC-Q101-qualified SMB10J family per Vishay's ordering matrix.
What does the "-E3/5B" suffix indicate for SMB10J24A-E3/5B?
The "-E3/5B" suffix specifies two attributes: "E3" indicates RoHS-compliant, commercial-grade construction with matte tin-plated leads, and "5B" denotes packaging in 13-inch diameter plastic tape and reel with a base quantity of 3200 units. This format supports high-volume SMT assembly and aligns with IPC/JEDEC standards for moisture sensitivity (MSL Level 1, peak reflow 260 °C). The SMB10J24A-E3/5B is not halogen-free - that designation requires the "M3" suffix instead.
How does SMB10J24A-E3/5B differ from bidirectional TVS diodes with similar voltage ratings?
SMB10J24A-E3/5B is unidirectional, meaning it conducts only in reverse bias (cathode-to-anode) above VBR, behaving like a Zener clamp for positive transients on DC rails. Bidirectional variants (e.g., SMB10J24CA) protect both polarities and are used on AC or floating signal lines. The SMB10J24A-E3/5B offers higher PPPM (1000 W vs. 800 W for bidirectional) and lower clamping voltage in its intended direction - making it preferred for 24 V DC power rail protection where polarity is fixed and surge energy is asymmetric.
What thermal considerations apply when using SMB10J24A-E3/5B in high-power surge scenarios?
For full 1000 W surge capability, SMB10J24A-E3/5B must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay's datasheet. Its thermal resistance is RθJA = 72 °C/W and RθJL = 20 °C/W - so at 1000 W, junction temperature rise could exceed 72 °C above ambient without adequate copper. Derating is required above TA = 25 °C per Figure 2; at 85 °C ambient, maximum sustainable PPPM drops to ~650 W. Proper pad layout and adjacent thermal vias are essential for automotive or industrial deployments.
SMB10J24A-E3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 25.7A
- Power - Peak Pulse:
- 1000W (1kW)
- 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 (SMB)
SMB10J24A-E3/5B FAQ
1.How can I place an order for SMB10J24A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J24A-E3/5B 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 SMB10J24A-E3/5B reliable?
The price and inventory of SMB10J24A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J24A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMB10J24A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J24A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J24A-E3/5B?
SMB10J24A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J24A-E3/5B 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 SMB10J24A-E3/5B?
For technical support, including SMB10J24A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J24A-E3/5B requirements.
6.How does Aetrix verify that SMB10J24A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMB10J24A-E3/5B 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 SMB10J24A-E3/5B meets industry standards.
7.What is the process for return or replacement of SMB10J24A-E3/5B?
All SMB10J24A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J24A-E3/5B, 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 SMB10J24A-E3/5B part is unused and in its original packaging.
Return procedure for SMB10J24A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J24A-E3/5B Tags
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