My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBG26A-M3/5B
- Part No.:
- SMBG26A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG26A-M3/5B.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,866
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBG26A-M3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features 26 V stand-off voltage (VWM), 28.9–31.9 V breakdown voltage (VBR) at 1 mA, 42.1 V maximum clamping voltage (VC) at 14.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMBG26A-M3/5B datasheet, SMBG26A-M3/5B pinout, SMBG26A-M3/5B application, or SMBG26A-M3/5B equivalent, key selection criteria include clamping performance under 14.3 A surge, unidirectional polarity with cathode band marking, AEC-Q101 qualification for automotive use, and halogen-free RoHS compliance per M3 suffix.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to divert transient energy away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at 26 V), while the low incremental surge resistance enables rapid voltage limiting during fast transients.
The SMBG26A-M3/5B is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance RθJA = 100 °C/W (on 5.0 mm × 5.0 mm copper pads) and RθJL = 20 °C/W, supporting reliable operation in thermally constrained automotive and industrial PCB layouts without active cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - maximum continuous reverse working voltage before clamping begins; sets safe operating margin for 24 V nominal systems. |
| VBR (min/max) | 28.9 V / 31.9 V at IT = 1 mA - tight breakdown tolerance ensures predictable turn-on across production lots. |
| VC @ IPPM | 42.1 V at 14.3 A - clamping voltage limits protected IC stress during 600 W transient events. |
| PPPM | 600 W - peak pulse power handling with 10/1000 μs waveform supports ISO 7637-2 Pulse 1/2/5a compliance testing. |
| IFSM | 100 A - 8.3 ms half-sine surge rating enables survival of high-energy load dump events in automotive ECUs. |
| Junction Temp | -55 °C to +150 °C - qualified for under-hood and industrial control environments with wide thermal cycling. |
| Package | SMBG (DO-215AA) - surface-mount, low-profile package compatible with automated SMT placement and reflow profiles up to 260 °C peak. |
Pinout & Package
SMBG26A-M3/5B uses the SMBG (DO-215AA) package: molded plastic case with matte tin-plated leads, 0.235–0.255 inch length, 0.130–0.155 inch width, and 0.075–0.095 inch height. Polarity is marked by a cathode band on the body end; the device is unidirectional, with cathode terminal connected to system ground or return path during clamping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive reference node | Connected to protected line (e.g., 24 V rail); conducts only during forward-biased ESD events (rare in TVS use). |
| Cathode | Clamp return path | Connected to ground or low-impedance return; carries full surge current during reverse avalanche clamping. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD-HBM/MM, enabling use in engine control and ADAS modules. |
| Halogen-free & RoHS compliant (M3) | Meets JESD201 Class 2 whisker resistance and global environmental regulations without compromising solderability or long-term reliability. |
| 600 W peak pulse power | Withstands repetitive 10/1000 μs transients at 0.01% duty cycle - sufficient for CAN/LIN bus protection and 24 V power input filtering. |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes voltage overshoot during clamping, reducing risk of latch-up or damage to 3.3 V/5 V logic downstream of protection stage. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs of body control modules (BCM) against load dump and jump-start surges per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between battery rail and DC-DC converter input to clamp transients above 26 V. Use Value: Limits clamped voltage to 42.1 V, ensuring downstream regulator and microcontroller remain within absolute maximum ratings during 100 A surge events. | Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA current loop) of pressure sensors in factory automation equipment. IC Role / Device Role / Timing Role: TVS mounted at connector interface to absorb ESD and inductive switching spikes induced on long cable runs. Use Value: Sub-1 ns response time and 1.0 μA leakage at 26 V preserve signal integrity and measurement accuracy without loading the sensor output. |
| Telecom DC Power Feeds | OBD-II Diagnostic Port Protection |
Use Scenario: Securing -48 V telecom rectifier outputs against lightning-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Reverse-connected SMBG26A-M3/5B clamps positive transients on negative-rail systems using polarity inversion. Use Value: 600 W rating and 150 °C max junction temperature support uninterrupted operation in sealed outdoor cabinets with limited airflow. | Use Scenario: Hardening OBD-II port pins (pins 6/CAN-H, 14/CAN-L) against ESD and vehicle battery connection errors. IC Role / Device Role / Timing Role: Discrete TVS on each CAN line, leveraging unidirectional behavior to avoid interfering with differential signaling. Use Value: Clamping voltage below 45 V prevents CAN transceiver damage while maintaining common-mode noise rejection and bit timing margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG26A-E3/5B | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3 suffix). | No AEC-Q101 qualification; suitable for industrial/commercial, not automotive. | Select SMBG26A-E3/5B where halogen-free requirement is absent and automotive qualification is unnecessary. |
| SMBJ26A-M3/5B | Same VWM/VBR/VC, but SMBJ package (DO-214AB) has higher RθJA (110 °C/W) and lower IPPM (13.7 A). | Lower surge current rating reduces margin for ISO 7637-2 Pulse 5a; less suitable for high-energy automotive loads. | Choose SMBG26A-M3/5B over SMBJ26A-M3/5B when 14.3 A IPPM and tighter thermal resistance are required. |
Compared with SMBG26A-E3/5B, the M3 version adds halogen-free compliance and AEC-Q101 qualification; compared with SMBJ26A-M3/5B, it delivers higher surge current capability and better thermal performance in the same footprint-constrained layout.
Availability
SMBG26A-M3/5B is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power feed applications requiring stable component supply, AEC-Q101 validation, and halogen-free manufacturing compliance.
Supply support for SMBG26A-M3/5B 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, efficiency, and application-specific optimization.
The SMBG series was developed for high-reliability surface-mount transient suppression in space-constrained, thermally demanding environments - especially automotive power distribution and industrial fieldbus nodes where AEC-Q101 compliance and 600 W surge capacity are mandatory.
FAQ
What is the clamping voltage of SMBG26A-M3/5B at its rated peak pulse current?
The SMBG26A-M3/5B has a maximum clamping voltage (VC) of 42.1 V at 14.3 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during transient events. The SMBG26A-M3/5B maintains this clamping performance across its qualified temperature range and after multiple surge cycles.
Is SMBG26A-M3/5B suitable for automotive applications?
Yes, SMBG26A-M3/5B is AEC-Q101 qualified and specifically designed for automotive use, including engine control units, body electronics, and ADAS subsystems. Its halogen-free (M3) construction, 150 °C junction rating, and validated performance under temperature cycling, humidity, and mechanical shock meet automotive reliability standards. The SMBG26A-M3/5B is listed in Vishay's AEC-Q101 qualified devices table with full test report traceability.
What does the "M3/5B" suffix indicate in SMBG26A-M3/5B?
The "M3" suffix denotes halogen-free, RoHS-compliant, industrial-grade construction meeting JESD201 Class 2 whisker resistance, while "5B" specifies packaging in 13-inch diameter tape-and-reel format with 3200 units per reel. This differs from "52" (7-inch reel, 750 units) and "E3" (RoHS-compliant but not halogen-free). The SMBG26A-M3/5B suffix directly maps to Vishay's ordering code structure in Document 88456.
How does SMBG26A-M3/5B compare to bidirectional TVS diodes like SMBG26CA?
SMBG26A-M3/5B is unidirectional and intended for DC line protection with defined polarity (cathode band), whereas SMBG26CA is bidirectional and used for AC or differential signal protection. The SMBG26A-M3/5B exhibits forward conduction at ~3.5 V (per datasheet note 6), while SMBG26CA clamps symmetrically in both directions. Their VBR and VC values differ slightly due to internal structure - selecting SMBG26A-M3/5B avoids unintended conduction in single-polarity systems.
What is the maximum reverse leakage current for SMBG26A-M3/5B at its stand-off voltage?
The SMBG26A-M3/5B has a maximum reverse leakage current (ID) of 1.0 μA at its 26 V stand-off voltage (VWM) and 25 °C ambient temperature. This low leakage preserves power efficiency in always-on systems and avoids false triggering in high-impedance sensing circuits. Leakage remains below 5.0 μA up to 125 °C, as confirmed by Vishay's derating curves in Document 88456.
SMBG26A-M3/5B 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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42.1V
- Current - Peak Pulse (10/1000µs):
- 14.3A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG26A-M3/5B FAQ
1.How can I place an order for SMBG26A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG26A-M3/5B 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 SMBG26A-M3/5B reliable?
The price and inventory of SMBG26A-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG26A-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBG26A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG26A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG26A-M3/5B?
SMBG26A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG26A-M3/5B 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 SMBG26A-M3/5B?
For technical support, including SMBG26A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG26A-M3/5B requirements.
6.How does Aetrix verify that SMBG26A-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG26A-M3/5B 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 SMBG26A-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBG26A-M3/5B?
All SMBG26A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG26A-M3/5B, 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 SMBG26A-M3/5B part is unused and in its original packaging.
Return procedure for SMBG26A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG26A-M3/5B Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
