My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBG7.5-E3/52
- Part No.:
- SMBG7.5-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG7.5-E3/52.pdf
- Description:
- TVS DIODE 7.5VWM 14.3VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,842
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBG7.5-E3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for clamping inductive switching transients and ESD events on power and signal lines. It features 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 - used in automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the SMBG7.5-E3/52 datasheet, SMBG7.5-E3/52 pinout, SMBG7.5-E3/52 application, or SMBG7.5-E3/52 equivalent, key selection criteria include unidirectional polarity, 12.9 V clamping performance at rated surge current, RoHS-compliant commercial-grade construction (E3 suffix), AEC-Q101 qualification eligibility (HE3 variant), and compatibility with automated SMT placement on standard 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamping protection device placed in parallel with sensitive circuit nodes. Its glass-passivated junction enables fast response (<1 ns) to transients, while low incremental surge resistance ensures stable clamping under repetitive 10/1000 µs surges at 0.01% duty cycle. The device is rated for -55 °C to +150 °C junction temperature and meets MSL Level 1 per J-STD-020.
Designed for surface-mount implementation in space-constrained applications, SMBG7.5-E3/52 uses matte tin-plated leads solderable per J-STD-002 and JESD 22-B102, with cathode band marking for polarity identification. Its thermal resistance is 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead) when mounted on recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VWM) | 7.5 V - Maximum continuous reverse operating voltage before significant leakage begins |
| Breakdown Voltage (VBR) | 8.33–9.21 V at 1.0 mA - Confirmed voltage range where device transitions into avalanche conduction |
| Clamping Voltage (VC) | 12.9 V at 46.5 A IPPM - Peak voltage seen by protected circuit during 10/1000 µs surge |
| Peak Pulse Power (PPPM) | 600 W - Sustained transient energy absorption capability under standardized waveform |
| Peak Pulse Current (IPPM) | 46.5 A - Maximum non-repetitive surge current the device can safely divert |
| Junction Temperature Range | -55 °C to +150 °C - Valid operating and storage range for automotive and industrial environments |
| RoHS & Reliability | E3 suffix: RoHS-compliant, commercial grade; HE3 variant qualified to AEC-Q101 |
Pinout & Package
Package: DO-215AA (SMBG), surface-mount gull-wing leaded case with cathode band marking. Dimensions: 6.48 mm × 3.94 mm × 2.10 mm (L × W × H); mounting requires 5.0 mm × 5.0 mm copper pads per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or lower-potential rail in unidirectional clamp configuration |
| Cathode (marked end) | High-side connection point | Connected to protected line (e.g., 12 V supply or CAN bus) - conducts during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables robust protection against ISO 7637-2 Load Dump and IEC 61000-4-5 surge events in 12 V automotive systems |
| Glass passivated junction | Ensures stable avalanche characteristics and long-term reliability under repeated transient stress |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without moisture-related failure risk |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes voltage overshoot during clamping, reducing stress on downstream ICs like microcontrollers or transceivers |
| AEC-Q101 qualification path | HE3 variant meets automotive-grade reliability requirements for engine control, body electronics, and ADAS sensors |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay environments subject to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor VOUT and ground to clamp positive-going transients above 7.5 V. Use Value: Limits voltage excursion to ≤12.9 V during 46.5 A surges, preventing damage to 3.3 V or 5 V ADC inputs and maintaining signal integrity. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input terminals to absorb inductive kickback before it reaches optocoupler input stages. Use Value: Withstands 600 W pulses without degradation, enabling reliable operation in factory automation with frequent contactor switching. |
| USB Power Line Protection | DC-DC Converter Input Stage |
Use Scenario: Guarding VBUS line in USB 2.0 host ports against ESD and hot-plug transients in consumer docking stations. IC Role / Device Role / Timing Role: Fast-response unidirectional suppressor placed between VBUS and GND, upstream of USB controller's internal protection. Use Value: Clamps 8 kV contact ESD events to <13 V within <1 ns, preserving USB enumeration and preventing port lockup. |
Use Scenario: Shielding buck converter input capacitors and high-side MOSFET gates from voltage spikes caused by long PCB traces feeding from battery or adapter. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12 V input rail, triggered before input capacitor overvoltage or controller shutdown thresholds are exceeded. Use Value: Absorbs 600 W surge energy without thermal runaway, allowing continued regulation during transient events common in automotive accessory modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5A-E3/52 | Same VWM (7.5 V), higher PPPM (600 W), but larger DO-214AA (SMB) package (7.11 mm × 6.22 mm vs. SMBG's 6.48 mm × 3.94 mm) | Less suitable for ultra-dense layouts; identical clamping (12.9 V @ 46.5 A) but lower thermal resistance (RθJA = 85 °C/W) | Select when board space allows and lower thermal resistance is prioritized over footprint minimization. |
| SMCJ7.5A-E3/57T | Same VWM, higher PPPM (1500 W), DO-214AB (SMC) package (7.11 mm × 6.22 mm), VC = 13.4 V @ 113 A | Targeted at higher-energy threats (e.g., ISO 16750-2 pulse 5a); not drop-in due to larger footprint and different pad layout | Choose for applications requiring >600 W surge handling, such as heavy-duty vehicle power distribution modules. |
Compared with SMBG7.5-E3/52, SMBJ7.5A-E3/52 offers identical electrical protection in a slightly larger package with better thermal dissipation, while SMCJ7.5A-E3/57T delivers triple the surge power at the cost of board area and layout redesign - making SMBG7.5-E3/52 optimal for compact, cost-sensitive 600 W-class protection.
Availability
SMBG7.5-E3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and USB power line protection requiring stable component supply, RoHS compliance, and automated SMT assembly support.
Supply support for SMBG7.5-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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The SMBG series was developed to deliver high-power transient suppression in ultra-low-profile surface-mount packages for next-generation automotive and industrial electronics where board space and thermal constraints are critical.
FAQ
What is the polarity configuration of SMBG7.5-E3/52?
SMBG7.5-E3/52 is a unidirectional transient voltage suppressor, meaning it conducts only in reverse bias (cathode positive relative to anode). The cathode is marked by a band on the device body. This configuration protects against positive-going transients on lines referenced to ground, such as 12 V supply rails or sensor outputs. SMBG7.5-E3/52 does not conduct in forward bias under normal operation, ensuring minimal leakage during steady-state conditions.
Does SMBG7.5-E3/52 meet automotive qualification standards?
SMBG7.5-E3/52 carries the E3 suffix, indicating RoHS-compliant commercial-grade construction. While the base part is not AEC-Q101 qualified, the HE3 variant (e.g., SMBG7.5HE3/52) is explicitly qualified to AEC-Q101. Engineers specifying SMBG7.5-E3/52 for automotive use should verify whether the application requires formal qualification - if so, SMBG7.5HE3/52 is the appropriate choice, sharing identical electrical specs and package dimensions with added stress-test validation.
What is the maximum clamping voltage of SMBG7.5-E3/52 under surge conditions?
The maximum clamping voltage (VC) of SMBG7.5-E3/52 is 12.9 V, measured at its rated peak pulse current (IPPM) of 46.5 A using the 10/1000 µs waveform. This value represents the upper limit of voltage imposed on the protected circuit during worst-case surge events. It is derived from actual characterization data in the Vishay datasheet (Document Number: 88456), confirming consistent clamping performance across production lots when mounted per recommended pad layout.
Can SMBG7.5-E3/52 be used in bi-directional protection applications?
No - SMBG7.5-E3/52 is strictly unidirectional and lacks symmetrical breakdown behavior. For bi-directional protection (e.g., AC lines or differential buses like RS-485), Vishay specifies CA-suffixed variants such as SMBG7.5CA. Using SMBG7.5-E3/52 in bi-directional configurations risks failure during negative transients, as it will not clamp below -0.7 V (forward diode drop) and offers no controlled reverse conduction. Always match the device polarity suffix to the signal architecture.
What is the thermal resistance of SMBG7.5-E3/52, and how does it affect layout?
SMBG7.5-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. This value assumes no internal layer copper pours or thermal vias. To maintain safe junction temperatures under repetitive surges, designers must adhere to the specified pad layout and avoid excessive trace length or narrow connections. Exceeding RθJA limits may cause thermal runaway during sustained transient activity, especially above 25 °C ambient.
SMBG7.5-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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 14.3V
- Current - Peak Pulse (10/1000µs):
- 42A
- 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)
SMBG7.5-E3/52 FAQ
1.How can I place an order for SMBG7.5-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG7.5-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 SMBG7.5-E3/52 reliable?
The price and inventory of SMBG7.5-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 SMBG7.5-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG7.5-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG7.5-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG7.5-E3/52?
SMBG7.5-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG7.5-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 SMBG7.5-E3/52?
For technical support, including SMBG7.5-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG7.5-E3/52 requirements.
6.How does Aetrix verify that SMBG7.5-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG7.5-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 SMBG7.5-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG7.5-E3/52?
All SMBG7.5-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG7.5-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 SMBG7.5-E3/52 part is unused and in its original packaging.
Return procedure for SMBG7.5-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG7.5-E3/52 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 …
