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Vishay General Semiconductor - Diodes Division SMBG24-E3/5B
- Part No.:
- SMBG24-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG24-E3/5B.pdf
- Description:
- TVS DIODE 24VWM 43VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,848
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Product details
Overview
SMBG24-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for clamping inductive switching transients and ESD events on power rails and signal lines. It features 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.
For engineers reviewing the SMBG24-E3/5B datasheet, SMBG24-E3/5B pinout, SMBG24-E3/5B application, or SMBG24-E3/5B equivalent, key selection considerations include its unidirectional polarity, AEC-Q101 qualification, RoHS-compliant matte tin plating, MSL Level 1 moisture sensitivity, and suitability for automotive power rail protection where fast response (<1 ns), low clamping ratio, and high surge robustness are required.
Technical Context
The SMBG24-E3/5B operates as a silicon avalanche diode with glass-passivated junction, delivering precise voltage clamping during transient overvoltage events. Its unidirectional configuration enables integration into DC power paths with cathode-banded polarity marking, and it complies with ANSI/IEEE C62.35 surge standards.
Thermal performance is defined by 100 °C/W junction-to-ambient thermal resistance (RθJA) on standard 5.0 mm × 5.0 mm copper pads and 20 °C/W junction-to-lead (RθJL). It supports operating junction temperatures from –55 °C to +150 °C and withstands 100 A non-repetitive forward surge current (IFSM) per 8.3 ms half-sine wave.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse working voltage before clamping begins; defines safe DC operating margin. |
| VBR (min/max) | 26.7 V / 29.5 V at 1 mA - Guaranteed avalanche onset range; ensures consistent turn-on across production lots. |
| VC @ IPPM | 38.9 V at 15.4 A - Clamped voltage under 600 W 10/1000 µs surge; determines protected circuit's maximum stress level. |
| PPPM | 600 W - Peak pulse power handling capability; validates robustness against common lightning and inductive kick transients. |
| IFSM | 100 A - Single half-sine surge current rating; supports protection of 12 V/24 V automotive power supplies during load dump. |
| TJ max | +150 °C - Maximum junction temperature; enables reliable operation in under-hood automotive environments. |
| MSL Level | Level 1 per J-STD-020 - No floor life limitation; allows unlimited exposure to ambient conditions prior to reflow. |
Pinout & Package
Package: DO-215AA (SMBG), surface-mount gull-wing leaded case with matte tin-plated terminals, 0.235–0.255 inch (5.97–6.48 mm) body length, 0.130–0.155 inch (3.30–3.94 mm) body width, and cathode band marking on the anode side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry terminal in forward bias | Connected to lower-potential side of protected line; forms clamping path when cathode is at higher potential. |
| Cathode (banded end) | Current exit terminal in forward bias; clamping node in reverse bias | Connected to higher-potential rail (e.g., battery+); conducts avalanche current to ground during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan. |
| Glass passivated junction | Ensures stable VBR tolerance and long-term leakage stability under humidity and thermal stress. |
| 600 W 10/1000 µs pulse rating | Meets ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 surge immunity requirements for Class III equipment. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for downstream MOSFETs and ICs. |
| RoHS-compliant, MSL Level 1 | Enables lead-free reflow assembly without baking; eliminates supply chain restrictions for global automotive OEMs. |
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 inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery+ and chassis ground, clamping transients within nanoseconds. Use Value: Limits voltage to ≤38.9 V during 15.4 A surges, preventing damage to 36 V-rated CAN transceivers and microcontrollers. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in industrial pressure/temperature sensors exposed to field wiring ESD. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on sensor output, referenced to system ground. Use Value: Maintains signal integrity with <100 pF junction capacitance at zero bias while suppressing ±15 kV contact ESD per IEC 61000-4-2. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Guarding 48 V DC input stages of PoE-powered switches and base station radios against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary front-end TVS on DC input, coordinated with upstream fuses and secondary filtering. Use Value: Absorbs 600 W pulses without degradation, enabling compliance with Telcordia GR-1089-CORE Zone 3 surge requirements. |
Use Scenario: Suppressing back-EMF from brushed DC motors in washing machines and HVAC blowers connected to 24 V control boards. IC Role / Device Role / Timing Role: Unidirectional clamp across motor terminals or H-bridge supply rails. Use Value: Withstands repetitive 100 A surge currents, extending lifespan of driver MOSFETs and reducing field failure rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A-E3/5B | Same DO-214AB (SMB) package but larger footprint (0.230" × 0.155"); 24 V VWM, 38.9 V VC @ 15.4 A - identical clamping performance. | Requires PCB pad revision due to different outline (DO-214AB vs. DO-215AA); not drop-in compatible. | Select if legacy SMB layout exists and thermal derating margin permits slightly higher RθJA (110 °C/W). |
| SMAJ24AHE3/A | DO-214AC (SMA) package; 24 V VWM, 38.9 V VC @ 12.3 A; 400 W PPPM; AEC-Q101 qualified. | Lower surge rating limits use to sub-400 W threat levels; smaller size eases dense layouts but reduces heat dissipation. | Choose for space-constrained consumer designs where full 600 W immunity is not mandated. |
Compared with SMBJ24A-E3/5B and SMAJ24AHE3/A, the SMBG24-E3/5B delivers identical electrical clamping performance in a smaller DO-215AA footprint with optimized thermal path (RθJL = 20 °C/W), making it preferred for new automotive PCBs requiring high-density placement and robust thermal management.
Availability
SMBG24-E3/5B is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom power inputs, and appliance motor drives requiring stable component supply with AEC-Q101 assurance and RoHS compliance.
Supply support for SMBG24-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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive qualification.
The SMBG series was developed specifically for high-reliability surface-mount transient suppression in space-constrained automotive and industrial systems, balancing low profile, high surge capacity, and AEC-Q101 compliance.
FAQ
What is the polarity configuration of the SMBG24-E3/5B?
The SMBG24-E3/5B is a unidirectional transient voltage suppressor diode. Its cathode is marked by a visible band on the package body, and it conducts only when the cathode is at a higher potential than the anode - making it suitable for DC power rail clamping where polarity is fixed. This differs from bi-directional variants (e.g., SMBG24CA) that suppress surges in both directions without polarity dependence.
Does the SMBG24-E3/5B meet automotive qualification standards?
Yes, the SMBG24-E3/5B is AEC-Q101 qualified, as confirmed in Vishay's official documentation (Document Number 88456, Revision 12-Nov-12). This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD robustness - validating its suitability for under-hood and chassis-mounted automotive applications.
What is the maximum clamping voltage of the SMBG24-E3/5B under surge conditions?
The SMBG24-E3/5B has a maximum clamping voltage (VC) of 38.9 V at 15.4 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is guaranteed across temperature and production lot, ensuring downstream components see no more than 38.9 V during standardized surge events.
Can the SMBG24-E3/5B be used in bi-directional protection circuits?
No - the SMBG24-E3/5B is strictly unidirectional and lacks symmetrical breakdown characteristics. For bi-directional transient suppression (e.g., AC lines or differential data buses), Vishay specifies CA-suffix parts like SMBG24CA. Using SMBG24-E3/5B in such roles would leave one polarity unprotected and risk device failure.
What packaging format does the SMBG24-E3/5B ship in?
The SMBG24-E3/5B ships in 13-inch diameter plastic tape and reel format, with a base quantity of 3200 units per reel (ordering code suffix "/5B"). The tape conforms to EIA-481 standards and supports high-speed automated placement, with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
SMBG24-E3/5B 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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 (SMBG)
SMBG24-E3/5B FAQ
1.How can I place an order for SMBG24-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG24-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 SMBG24-E3/5B reliable?
The price and inventory of SMBG24-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 SMBG24-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG24-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG24-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG24-E3/5B?
SMBG24-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG24-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 SMBG24-E3/5B?
For technical support, including SMBG24-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG24-E3/5B requirements.
6.How does Aetrix verify that SMBG24-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG24-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 SMBG24-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG24-E3/5B?
All SMBG24-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG24-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 SMBG24-E3/5B part is unused and in its original packaging.
Return procedure for SMBG24-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG24-E3/5B Tags
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