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Vishay General Semiconductor - Diodes Division SMBG24A-E3/5B
- Part No.:
- SMBG24A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG24A-E3/5B.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,220
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Product details
Overview
SMBG24A-E3/5B 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 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 in automotive sensor signal lines, industrial I/O ports, and DC power rail protection.
For engineers reviewing the SMBG24A-E3/5B datasheet, SMBG24A-E3/5B pinout, SMBG24A-E3/5B application, or SMBG24A-E3/5B 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 clamping device that remains non-conductive below 24 V and rapidly transitions to low-impedance conduction above its 26.7 V minimum breakdown threshold. Its glass-passivated junction ensures stable leakage performance (<1.0 µA at VWM) and fast response time (<1 ns), enabling effective suppression of ESD, lightning-induced surges, and inductive switching transients.
The SMBG24A-E3/5B is rated for 100 A non-repetitive forward surge current (8.3 ms half-sine), exhibits 20 °C/W typical junction-to-lead thermal resistance, and meets J-STD-020 MSL Level 1 with 260 °C reflow peak - confirming suitability for high-reliability surface-mount assembly without moisture sensitivity concerns.
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 - Confirmed breakdown range ensuring reliable turn-on margin above VWM |
| VC @ IPPM | 38.9 V at 15.4 A - Clamped voltage during 600 W transient, limiting downstream IC stress |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform, 0.01% duty cycle |
| IFSM | 100 A - Surge current withstand capability for 8.3 ms half-sine, critical for motor drive protection |
| TJ max | +150 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
| Leakage ID | ≤1.0 µA at 24 V - Negligible standby power loss in battery-powered sensor nodes |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, gull-wing lead form with cathode band marking; dimensions 6.48 mm × 3.94 mm × 2.10 mm (L×W×H); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection point in unidirectional configuration | Connected to protected line; clamps positive transients to ground when anode is grounded |
| Anode | Reference/ground node connection | Typically tied to system ground or low-impedance return path to complete clamping loop |
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 low leakage across -55 °C to +150 °C operating range |
| MSL Level 1 | Zero floor life limitation; supports standard reflow without baking or dry pack requirements |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 surge events in 12 V/24 V systems |
| Low profile SMBG package | Enables high-density PCB layout while maintaining thermal performance via 5.0 mm × 5.0 mm pad design |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between signal line and chassis ground to limit voltage excursion during 12 V/24 V system faults. Use Value: Limits clamped voltage to ≤38.9 V, preventing damage to 3.3 V/5 V interface ICs while maintaining signal integrity during <1 ns transients. | Use Scenario: Safeguarding digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-rated TVS on 24 V DC input channels, absorbing repetitive 600 W pulses without degradation. Use Value: Enables >100,000 surge cycles per IEC 61000-4-5 Level 4 compliance due to low incremental resistance and thermal stability. |
| DC Power Rail Protection | Consumer Device USB Port Protection |
Use Scenario: Secondary overvoltage protection on 24 V DC power distribution boards upstream of DC-DC converters and microcontrollers. IC Role / Device Role / Timing Role: Fast-clamping TVS in parallel with bulk capacitance to shunt energy from inductive load switching events. Use Value: Clamps 100 A surge within 1 ns, reducing voltage overshoot to safe levels before downstream LDOs or PMICs respond. | Use Scenario: ESD and cable discharge protection on USB 2.0 VBUS lines in portable medical monitors and smart home hubs. IC Role / Device Role / Timing Role: Unidirectional TVS connected between VBUS and ground to clamp ±15 kV contact ESD per IEC 61000-4-2. Use Value: Delivers sub-1 ns response and <1.0 µA leakage at 5 V, preserving battery life while meeting Class 4 ESD immunity. |
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 VWM (24 V), but lower PPPM = 600 W (same rating), higher VC = 38.9 V (identical), different package: SMB (DO-214AA) - 0.5 mm taller, 0.3 mm wider | SMB package has higher RθJA (110 °C/W vs. 100 °C/W), slightly reduced thermal margin in high-density layouts | Select SMBJ24A-E3/5B only if legacy SMB footprint is fixed and thermal derating is acceptable |
| SMCJ24A-E3/5B | Same VWM/VBR/VC, but higher PPPM = 1500 W, larger SMC (DO-214AB) package - 7.11 mm × 6.22 mm footprint | Higher surge capacity suits 48 V industrial systems; incompatible with SMBG land pattern due to size and lead spacing | Choose SMCJ24A-E3/5B when 1500 W surge rating is required and board space allows larger package |
Compared with SMBG24A-E3/5B, SMBJ24A-E3/5B offers identical electrical specs but less optimal thermal performance in constrained layouts, while SMCJ24A-E3/5B delivers triple the pulse power at the cost of footprint compatibility - making SMBG24A-E3/5B the optimal balance of surge rating, size, and AEC-Q101 compliance for space-limited automotive and industrial designs.
Availability
SMBG24A-E3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and DC power rail protection requiring stable component supply, AEC-Q101 qualification, and RoHS-compliant packaging.
Supply support for SMBG24A-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-grade qualification.
The SMBG series was engineered specifically for high-reliability surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 compliance, low-profile packaging, and repeatable clamping performance are mandatory.
FAQ
What is the polarity configuration of SMBG24A-E3/5B?
The SMBG24A-E3/5B is a unidirectional transient voltage suppressor diode, with the cathode identified by a band on the SMBG (DO-215AA) package body. It conducts only during positive transients relative to its anode, making it suitable for DC line protection where polarity is fixed - unlike bidirectional variants such as SMBG24CA which suppress both polarities.
Does SMBG24A-E3/5B meet automotive qualification standards?
Yes, SMBG24A-E3/5B is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per the AEC-Q101 standard. This qualification confirms its suitability for under-hood and cabin automotive applications, including engine control units, body electronics, and ADAS sensor interfaces.
What is the maximum clamping voltage of SMBG24A-E3/5B at rated surge current?
The SMBG24A-E3/5B has a maximum clamping voltage (VC) of 38.9 V at its rated peak pulse current (IPPM) of 15.4 A, measured using the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during a 600 W transient event, ensuring downstream components remain within safe operating limits.
Can SMBG24A-E3/5B be used in bidirectional signal line protection?
No, SMBG24A-E3/5B is unidirectional and not suitable for bidirectional signal lines such as RS-485 or CAN without additional circuitry. For bidirectional protection, the SMBG24CA variant must be selected - it shares the same VWM and package but provides symmetrical clamping for both positive and negative transients.
What is the thermal resistance specification for SMBG24A-E3/5B?
The SMBG24A-E3/5B has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W and a typical junction-to-ambient resistance (RθJA) of 100 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal. These values enable effective heat dissipation during repetitive surge events and support reliable operation up to +150 °C junction temperature.
SMBG24A-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:
- 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-E3/5B FAQ
1.How can I place an order for SMBG24A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG24A-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 SMBG24A-E3/5B reliable?
The price and inventory of SMBG24A-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 SMBG24A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG24A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG24A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG24A-E3/5B?
SMBG24A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG24A-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 SMBG24A-E3/5B?
For technical support, including SMBG24A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG24A-E3/5B requirements.
6.How does Aetrix verify that SMBG24A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG24A-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 SMBG24A-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG24A-E3/5B?
All SMBG24A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG24A-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 SMBG24A-E3/5B part is unused and in its original packaging.
Return procedure for SMBG24A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG24A-E3/5B Tags
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