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Vishay General Semiconductor - Diodes Division SMBG24-E3/52
- Part No.:
- SMBG24-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG24-E3/52.pdf
- Description:
- TVS DIODE 24VWM 43VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,139
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Product details
Overview
SMBG24-E3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR) at 1 mA, 38.9 V clamping voltage (VC) at 15.4 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive power electronics and industrial sensor interfaces.
For engineers reviewing the SMBG24-E3/52 datasheet, SMBG24-E3/52 pinout, SMBG24-E3/52 application, or SMBG24-E3/52 equivalent, this page delivers verified electrical parameters, JEDEC-compliant thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification status, RoHS-compliant matte tin plating, and MSL Level 1 reflow compatibility - all critical for automotive-grade ESD/surge protection design-in.
Technical Context
The SMBG24-E3/52 operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its VBR range (26.7–29.5 V), then clamping transients to ≤38.9 V at 15.4 A. Its glass-passivated junction ensures stable leakage (<1.0 µA at 24 V) and fast response time (<1.0 ps), enabling protection of sensitive MOSFET gates and microcontroller I/Os against inductive switching spikes.
Thermally, it sustains operation from −55 °C to +150 °C junction temperature, with RθJL = 20 °C/W to leads and derated pulse power above 25 °C per Fig. 2. The device is rated for 100 A non-repetitive forward surge (8.3 ms half-sine), supporting high-energy load-dump events in 12 V automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 12 V/24 V systems. |
| VBR (min/max) | 26.7 V / 29.5 V at 1 mA - Confirmed breakdown threshold range; ensures reliable turn-on without premature conduction. |
| VC @ IPPM | 38.9 V at 15.4 A - Clamped voltage during 600 W transient; limits stress on downstream ICs to safe levels. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; meets ISO 7637-2 Pulse 1/2/5a requirements. |
| IFSM | 100 A - Single half-sine surge rating (8.3 ms); supports automotive load-dump protection without failure. |
| TJ max | +150 °C - Maximum junction temperature; enables under-hood deployment with standard PCB copper pad layout. |
| RθJA | 100 °C/W - Thermal resistance junction-to-ambient on 0.2" × 0.2" copper pads; informs heatsinking and power cycling limits. |
Pinout & Package
Package: DO-215AA (SMBG), surface-mount gull-wing lead frame with cathode band marking. Dimensions: 6.48 mm × 3.94 mm × 2.10 mm (L × W × H). Matte tin-plated leads meet J-STD-002 solderability and JESD201 Class 1A whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side reference | Connected to ground or low-potential node; forms return path during clamping. |
| Cathode | Reverse voltage sensing / clamping output | Marked with band; connects to protected line (e.g., 24 V rail); conducts avalanche current to anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics per stress test requirements. |
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy transients from relay coil decay or alternator load dump without degradation. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage current across temperature and humidity cycles. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture-related popcorning or delamination. |
| RoHS-compliant, matte tin leads | Meets J-STD-002 solderability and JESD22-B102 intermetallic formation standards for reliable assembly. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply inputs in vehicle ECUs from ISO 7637-2 Pulse 5a load-dump transients up to 60 V. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between 24 V rail and chassis ground, clamping surges within nanoseconds. Use Value: Limits voltage seen by downstream DC/DC converters and microcontrollers to ≤38.9 V, preventing latch-up or gate oxide damage. |
Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA current loops) in factory automation sensors exposed to motor drive noise. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across signal and return lines to shunt EFT bursts without distorting slow analog signals. Use Value: Maintains signal integrity with <1.0 µA leakage at 24 V and clamps 1 kV ESD events to <40 V, preserving measurement accuracy. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Driver Protection |
|
Use Scenario: Securing 24 V DC input of PoE-powered network switches against lightning-induced surges on building wiring. IC Role / Device Role / Timing Role: Primary-level TVS on front-end rectifier output, coordinated with upstream GDTs for staged protection. Use Value: Absorbs 600 W pulses without thermal runaway, enabling compliance with IEC 61000-4-5 Level 4 (4 kV line-earth). |
Use Scenario: Shielding H-bridge MOSFET sources in smart washing machine motor controllers from inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS tied between each MOSFET source and ground, turning on before device avalanche limit. Use Value: Prevents destructive dv/dt-induced shoot-through by clamping spikes to 38.9 V, extending MOSFET lifetime beyond 100,000 cycles. |
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 DO-214AA (SMB) package but lower RθJA (85 °C/W); identical VWM/VC specs but rated for 600 W with tighter VBR tolerance (5%). | Preferred where board space allows larger pad area for improved thermal dissipation; not AEC-Q101 qualified. | Select SMBJ24A-E3/52 only if AEC-Q101 is not required and thermal margin is constrained. |
| SMAJ24A-E3/52 | Smaller DO-214AC (SMA) package (3.5 mm × 1.9 mm); same electrical specs but lower IPPM (12.3 A) and higher VC (43.5 V) due to reduced thermal mass. | Suitable for space-constrained consumer boards; insufficient for automotive load-dump energy absorption. | Choose SMAJ24A-E3/52 only for cost-sensitive, non-automotive applications with <500 W surge exposure. |
Compared with SMBG24-E3/52, SMBJ24A-E3/52 offers tighter parametric control but lacks automotive qualification, while SMAJ24A-E3/52 sacrifices clamping performance and surge capacity for footprint reduction - making SMBG24-E3/52 the optimal choice for AEC-Q101-compliant, thermally demanding 24 V system protection.
Availability
SMBG24-E3/52 is available at Aetrix Electronics and suitable for automotive ECU designs, industrial sensor modules, telecom power supplies, and appliance motor controllers requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBG24-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, automotive qualification, and high-power handling.
The SMBG series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 compliance and 600 W pulse capability are mandatory.
FAQ
What is the maximum clamping voltage of SMBG24-E3/52 under standard test conditions?
The SMBG24-E3/52 has a maximum clamping voltage (VC) of 38.9 V when subjected to its rated peak pulse current (IPPM) of 15.4 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream components see no more than 38.9 V during transient events - critical for protecting 3.3 V or 5 V logic interfaces powered from a 24 V rail.
Is SMBG24-E3/52 qualified for automotive applications?
Yes, SMBG24-E3/52 is AEC-Q101 qualified, as confirmed in the Vishay datasheet (Document Number 88456, Revision 12-Nov-12). This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and mechanical shock - validating its use in engine control units, body control modules, and ADAS power supplies where reliability under thermal and vibration stress is essential.
What does the "-E3/52" suffix indicate in SMBG24-E3/52?
The "-E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting JESD201 Class 1A whisker resistance. The "/52" specifies packaging in 7-inch plastic tape and reel, with a base quantity of 750 units per reel - optimized for automated SMT placement in high-volume manufacturing environments.
Can SMBG24-E3/52 be used in bi-directional protection circuits?
No, SMBG24-E3/52 is a unidirectional TVS diode, indicated by the "A" suffix (not "CA"). It conducts only in reverse bias above VBR; for bi-directional protection, Vishay specifies variants like SMBG24CA. Using SMBG24-E3/52 in AC or floating signal paths would leave positive-going transients unprotected, risking component failure.
What is the thermal resistance junction-to-ambient for SMBG24-E3/52?
The SMBG24-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, as defined in the Vishay datasheet. This value governs temperature rise under sustained power dissipation and must be used with derating curves (Fig. 2) to ensure TJ remains ≤150 °C in actual layouts.
SMBG24-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:
- 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-E3/52 FAQ
1.How can I place an order for SMBG24-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG24-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 SMBG24-E3/52 reliable?
The price and inventory of SMBG24-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 SMBG24-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG24-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG24-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG24-E3/52?
SMBG24-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG24-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 SMBG24-E3/52?
For technical support, including SMBG24-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG24-E3/52 requirements.
6.How does Aetrix verify that SMBG24-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG24-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 SMBG24-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG24-E3/52?
All SMBG24-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG24-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 SMBG24-E3/52 part is unused and in its original packaging.
Return procedure for SMBG24-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG24-E3/52 Tags
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