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Vishay General Semiconductor - Diodes Division SMBG24A-E3/52
- Part No.:
- SMBG24A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG24A-E3/52.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,953
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Product details
Overview
SMBG24A-E3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) 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 signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMBG24A-E3/52 datasheet, SMBG24A-E3/52 pinout, SMBG24A-E3/52 application, or SMBG24A-E3/52 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 μA leakage at 24 V), then rapidly avalanches to clamp transients within nanoseconds. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
The device is rated for 100 A non-repetitive forward surge current (8.3 ms half-sine), supports -55 °C to +150 °C operating range, and meets J-STD-020 MSL Level 1 with 260 °C reflow peak - confirming suitability for high-reliability automotive and industrial PCB assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 26.7 V / 29.5 V at 1 mA - Ensures predictable turn-on threshold across production lot |
| VC @ IPPM | 38.9 V at 15.4 A - Limits protected circuit voltage during 600 W transient event |
| PPPM | 600 W - Peak pulse power handling with 10/1000 μs waveform at 0.01% duty cycle |
| IFSM | 100 A - Withstands single 8.3 ms AC line surge without degradation |
| Junction Temp | -55 °C to +150 °C - Enables operation in under-hood automotive and industrial environments |
| MSL Level | Level 1 per J-STD-020 - Supports standard lead-free reflow without baking |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VWM exceeded |
| Anode (unbanded end) | Reference node | Typically tied to system ground or lower-potential rail; completes clamping path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment power domains |
| Glass passivated junction | Ensures stable VBR tolerance and low parameter drift over temperature and lifetime |
| 600 W peak pulse power | Provides margin against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges in 12 V systems |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage stress on downstream ICs like CAN transceivers and microcontrollers |
| MSL Level 1, 260 °C peak | Enables direct placement into high-volume SMT lines without pre-baking or special handling |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in body control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Shunt TVS diode placed between VIN and GND, clamping spikes within <1 ns to prevent latch-up or damage to LDOs and MCUs. Use Value: Withstands 100 A surge (8.3 ms) and limits clamped voltage to ≤38.9 V, preserving downstream 40 V-rated regulators and logic. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Unidirectional TVS connected in series with signal line and pull-down resistor, diverting ESD and inductive kickback away from ADC input. Use Value: 24 V VWM allows normal signal swing while clamping >30 V transients; 1.0 μA leakage at VWM avoids measurement error. |
| Telecom DC Power Input Protection | OBD-II Diagnostic Port Protection |
Use Scenario: Securing 24 V DC input of PoE-powered network switches and base station radios against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary front-end TVS on main DC input rail, coordinated with upstream fuses and secondary filtering. Use Value: 600 W rating handles IEC 61000-4-5 Combination Wave (1.2/50 μs + 8/20 μs) up to 4 kV, with thermal resistance (RθJA = 100 °C/W) enabling sustained dissipation. | Use Scenario: Hardening OBD-II connector pins (pins 4, 5, 16) against ESD and accidental 24 V battery reverse connection in vehicle service tools. IC Role / Device Role / Timing Role: Unidirectional TVS on pin 16 (battery+) and pin 4/5 (chassis GND), providing fast clamping before ESD enters diagnostic MCU. Use Value: AEC-Q101 qualification ensures compliance with automotive environmental stress testing; cathode band enables correct orientation during manual repair. |
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), but lower PPPM = 600 W (same), higher VC = 38.9 V (identical), different package: SMB (DO-214AA) - 1.58 mm taller, 0.2 mm wider | SMB footprint requires PCB layout change; identical electrical performance for most 12 V rail designs | Select SMBJ24A-E3/52 only if legacy SMB land pattern exists and height clearance permits |
| SMCJ24A-E3/52 | Same VWM and VBR, but higher PPPM = 1500 W, larger SMC (DO-214AB) package, RθJA = 35 °C/W | Used where higher surge energy (e.g., ISO 16750-2) or thermal margin is required; incompatible footprint | Choose SMCJ24A-E3/52 for heavy-duty industrial motor drives or off-road vehicle systems with >1 kV surge exposure |
Compared with SMBG24A-E3/52, SMBJ24A-E3/52 offers identical clamping and power rating but demands PCB redesign due to SMB package dimensions, while SMCJ24A-E3/52 delivers triple the surge energy handling in a larger, thermally superior package - making SMBG24A-E3/52 optimal for space-constrained AEC-Q101-compliant automotive modules where 600 W suffices.
Availability
SMBG24A-E3/52 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor signal conditioning circuits, and telecom DC power input stages requiring stable component supply with full traceability and AEC-Q101 assurance.
Supply support for SMBG24A-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 automotive-grade qualification.
The SMBG series was engineered specifically for high-volume surface-mount transient suppression in harsh environments - balancing compact size, AEC-Q101 compliance, and repeatable clamping performance across temperature and life cycles.
FAQ
What is the maximum clamping voltage of SMBG24A-E3/52 at its rated peak pulse current?
The SMBG24A-E3/52 has a maximum clamping voltage (VC) of 38.9 V at its specified peak pulse current (IPPM) of 15.4 A, measured using a 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and ensures downstream components see no more than 38.9 V during a 600 W transient event. The SMBG24A-E3/52 datasheet confirms this under Electrical Characteristics, Table 1.
Is SMBG24A-E3/52 qualified for automotive applications?
Yes, SMBG24A-E3/52 is AEC-Q101 qualified, as explicitly stated in the Vishay document 88456 revision 09-Jan-2024. This qualification covers stress tests including temperature cycling, humidity bias, and mechanical shock - validating its use in engine control units, ADAS camera modules, and body electronics. The "HE3" suffix variant is also AEC-Q101 qualified, but SMBG24A-E3/52 itself carries full qualification per the base part number family definition.
What is the standoff voltage and breakdown voltage range for SMBG24A-E3/52?
The SMBG24A-E3/52 has a standoff voltage (VWM) of 24 V and a breakdown voltage (VBR) range of 26.7 V to 29.5 V at 1 mA test current. These values are confirmed in the Electrical Characteristics table of the Vishay datasheet (document 88456), where "SMBG24A" is listed with VBR min/max = 26.7 V / 29.5 V and VWM = 24 V. This defines its precise turn-on window for reliable transient suppression.
Does SMBG24A-E3/52 have polarity marking, and how is it oriented on the PCB?
Yes, SMBG24A-E3/52 is unidirectional and features a cathode band marking on the banded end of the SMBG (DO-215AA) package. During PCB layout, the banded end must be connected to the line being protected (e.g., 12 V rail), while the unbanded (anode) end connects to ground. This orientation ensures proper avalanche conduction during overvoltage events - reversing it would block intended clamping action.
What is the thermal resistance and maximum junction temperature for SMBG24A-E3/52?
The SMBG24A-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, and a maximum junction temperature (TJ) of +150 °C. These values are specified in the Thermal Characteristics and Maximum Ratings sections of the Vishay datasheet (88456), supporting operation in under-hood automotive and high-temperature industrial enclosures.
SMBG24A-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB Gull Wing
- 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):
- 15.4A
- 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 (SMBG)
SMBG24A-E3/52 FAQ
1.How can I place an order for SMBG24A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG24A-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 SMBG24A-E3/52 reliable?
The price and inventory of SMBG24A-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 SMBG24A-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG24A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG24A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG24A-E3/52?
SMBG24A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG24A-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 SMBG24A-E3/52?
For technical support, including SMBG24A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG24A-E3/52 requirements.
6.How does Aetrix verify that SMBG24A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG24A-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 SMBG24A-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG24A-E3/52?
All SMBG24A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG24A-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 SMBG24A-E3/52 part is unused and in its original packaging.
Return procedure for SMBG24A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG24A-E3/52 Tags
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