My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBG7.5A-M3/5B
- Part No.:
- SMBG7.5A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG7.5A-M3/5B.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,605
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBG7.5A-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 sensitive electronics. It features a 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1.0 mA, 12.9 V maximum clamping voltage (VC) at 46.5 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 SMBG7.5A-M3/5B datasheet, SMBG7.5A-M3/5B pinout, SMBG7.5A-M3/5B application, or SMBG7.5A-M3/5B equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, halogen-free RoHS compliance (M3 suffix), 150 °C max junction temperature, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a fast-acting shunt clamp during voltage transients, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and low incremental surge resistance. Its unidirectional configuration provides forward conduction capability (100 A IFSM, 8.3 ms half-sine) while blocking reverse leakage ≤1.0 μA at 7.5 V.
The device is rated for 600 W peak pulse power under 10/1000 μs waveform at 0.01% duty cycle, with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W - enabling reliable operation in high-reliability automotive and industrial environments where junction temperature must remain below 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 8.33 V / 9.21 V at 1.0 mA - ensures predictable turn-on threshold across production lot |
| VC @ IPPM | 12.9 V at 46.5 A - limits protected circuit voltage during 600 W transient event |
| PPPM | 600 W - peak pulse power handling per 10/1000 μs standard waveform |
| IFSM | 100 A - surge current rating for 8.3 ms single half-sine wave (unidirectional only) |
| TJ max | +150 °C - enables use in under-hood automotive and high-ambient industrial locations |
| Package | SMBG (DO-215AA) - surface-mount, low-profile, MSL Level 1, 260 °C reflow compatible |
Pinout & Package
Package: SMBG (DO-215AA), molded case with matte tin-plated leads, cathode indicated by band marking. Complies with UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection in unidirectional clamp | Connects to protected line; clamps when voltage exceeds VBR relative to anode |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Halogen-free & RoHS compliant (M3) | Meets environmental compliance requirements for industrial and automotive supply chains |
| 600 W peak pulse power (10/1000 μs) | Provides robust protection against ISO 7637-2 Load Dump and IEC 61000-4-5 surge events |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot during clamping, reducing stress on downstream ICs and MOSFETs |
| Fast response time & low dynamic impedance | Ensures clamping initiates before transient energy damages sensitive components |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in engine control units against load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VIN and GND, clamping within nanoseconds upon overvoltage detection. Use Value: Limits rail voltage to ≤12.9 V during 600 W surges, preserving MCU functionality without requiring upstream fuse coordination. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) of pressure sensors exposed to ESD and inductive switching noise. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on signal-to-ground path, minimizing signal distortion during normal operation. Use Value: Maintains <1.0 μA leakage at 7.5 V, ensuring measurement accuracy while suppressing >15 kV ESD per IEC 61000-4-2. |
| Consumer Device USB Port Protection | Telecom DC Power Input Protection |
Use Scenario: Guarding VBUS line of USB 2.0 ports in set-top boxes against hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Standoff-rated TVS on 5 V rail, positioned upstream of USB switch IC and downstream of input filter. Use Value: Clamps to 12.9 V before USB PHY damage threshold (~16 V), with no degradation after repeated 8 kV contact ESD strikes. | Use Scenario: Securing -48 V DC telecom power feed inputs against lightning-induced surges and AC mains coupling. IC Role / Device Role / Timing Role: Unidirectional TVS configured anode-to-rail, cathode-to-ground to handle negative-going transients on negative supply. Use Value: Withstands 100 A surge (8.3 ms) and maintains stable VBR across -55 °C to +150 °C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG7.5A-E3/5B | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3) | Preferred for non-automotive industrial use where halogen-free requirement is absent | Select E3 for cost-sensitive non-AEC applications; M3 required for automotive OEMs |
| SMBG7.5AHE3/5B | Identical electrical specs plus AEC-Q101 qualification; E3 suffix (not M3), so not halogen-free | Used where automotive qualification is mandatory but halogen-free material is optional | Choose HE3 when AEC-Q101 is required but halogen-free is not specified in BOM |
Compared with SMBG7.5A-M3/5B, the E3 variant offers identical protection performance without halogen-free compliance, while the HE3 variant adds AEC-Q101 qualification but lacks halogen-free status - making SMBG7.5A-M3/5B the only option satisfying both automotive qualification and halogen-free requirements simultaneously.
Availability
SMBG7.5A-M3/5B is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor modules, and telecom power supply designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SMBG7.5A-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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SMBG series was developed for high-power, surface-mount transient suppression in space-constrained automotive and industrial systems - delivering AEC-Q101-qualified robustness in the compact DO-215AA footprint.
FAQ
What is the clamping voltage of SMBG7.5A-M3/5B and how is it measured?
The SMBG7.5A-M3/5B has a maximum clamping voltage (VC) of 12.9 V, measured at its peak pulse current (IPPM) of 46.5 A using a standardized 10/1000 μs double-exponential waveform. This value reflects the actual voltage seen by protected circuitry during worst-case transient events and is guaranteed across temperature and production lots per Vishay Document 88456.
Is SMBG7.5A-M3/5B suitable for automotive applications?
Yes, SMBG7.5A-M3/5B is AEC-Q101 qualified and rated for operation from –55 °C to +150 °C, making it suitable for under-hood and chassis-mounted automotive applications. Its halogen-free (M3) and RoHS-compliant construction meets Tier 1 supplier material requirements, and its 600 W pulse rating supports ISO 7637-2 and ISO 16750-2 compliance testing when properly mounted.
How does the M3 suffix differ from E3 or HE3 in SMBG7.5A-M3/5B?
The M3 suffix in SMBG7.5A-M3/5B denotes halogen-free, RoHS-compliant, industrial-grade construction. In contrast, E3 is RoHS-compliant but not halogen-free, and HE3 adds AEC-Q101 qualification but retains E3's non-halogen-free composition. Only SMBG7.5A-M3/5B satisfies both halogen-free and AEC-Q101 requirements - critical for modern automotive BOMs.
What is the recommended PCB pad layout for SMBG7.5A-M3/5B?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area per terminal for SMBG7.5A-M3/5B to ensure proper thermal dissipation and 600 W pulse handling. The pad layout must follow the DO-215AA outline in Document 88456, with adequate solder mask clearance and no thermal reliefs on high-current paths to maintain low RθJA.
Can SMBG7.5A-M3/5B be used in bidirectional configurations?
No - SMBG7.5A-M3/5B is a unidirectional TVS diode, identifiable by its cathode band marking. For bidirectional operation, Vishay offers the SMBG7.5CA series (e.g., SMBG7.5CA-M3/5B), which has symmetric breakdown in both directions and no polarity marking. Using SMBG7.5A-M3/5B in reverse-biased mode beyond its 7.5 V VWM will cause premature conduction and potential failure.
SMBG7.5A-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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 46.5A
- 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)
SMBG7.5A-M3/5B FAQ
1.How can I place an order for SMBG7.5A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG7.5A-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 SMBG7.5A-M3/5B reliable?
The price and inventory of SMBG7.5A-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 SMBG7.5A-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBG7.5A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG7.5A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG7.5A-M3/5B?
SMBG7.5A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG7.5A-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 SMBG7.5A-M3/5B?
For technical support, including SMBG7.5A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG7.5A-M3/5B requirements.
6.How does Aetrix verify that SMBG7.5A-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG7.5A-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 SMBG7.5A-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBG7.5A-M3/5B?
All SMBG7.5A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG7.5A-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 SMBG7.5A-M3/5B part is unused and in its original packaging.
Return procedure for SMBG7.5A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG7.5A-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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
