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Vishay General Semiconductor - Diodes Division SMBG9.0A-E3/52
- Part No.:
- SMBG9.0A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG9.0A-E3/52.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBG9.0A-E3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 9.0 V stand-off voltage (VWM), 10.0–11.1 V breakdown voltage (VBR) at 1 mA, 15.4 V clamping voltage (VC) at 39.0 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive engine control units to safeguard 12 V supply rails against load dump transients.
For engineers reviewing the SMBG9.0A-E3/52 datasheet, SMBG9.0A-E3/52 pinout, SMBG9.0A-E3/52 application, or SMBG9.0A-E3/52 equivalent, key selection criteria include clamping performance under 39 A surge, unidirectional polarity with cathode band marking, AEC-Q101 qualification for automotive use, and SMBG (DO-215AA) surface-mount package compatibility with automated placement.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR (10.0–11.1 V), it avalanches to divert surge current away from downstream circuitry. Its low incremental surge resistance ensures minimal voltage overshoot during fast transients, while glass-passivated junction enhances reliability under repetitive stress.
The device is rated for -55 °C to +150 °C operating junction temperature, meets MSL Level 1 per J-STD-020, and supports 100 A non-repetitive forward surge (IFSM) - critical for handling inductive kickback in automotive solenoid drivers and motor control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - maximum continuous reverse operating voltage before clamping begins; sets threshold for 12 V automotive system protection. |
| VBR (min/max) | 10.0 V / 11.1 V at 1 mA - guaranteed avalanche initiation range; ensures consistent turn-on across temperature and unit variation. |
| VC @ IPPM | 15.4 V at 39.0 A - clamped voltage during 10/1000 μs surge; limits stress on protected ICs like microcontrollers or CAN transceivers. |
| PPPM | 600 W - peak pulse power handling with 0.01 % duty cycle; enables survival of ISO 7637-2 Pulse 5a load dump events. |
| IR @ VWM | 1.0 μA - ultra-low reverse leakage at 9.0 V; prevents battery drain in always-on automotive modules. |
| TJ max | +150 °C - extended junction temperature rating supports under-hood deployment without derating in high-ambient environments. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount gull-wing leaded case with matte tin-plated terminals; 0.255" × 0.155" footprint (6.48 mm × 3.94 mm); meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration; enables surge current flow toward ground during overvoltage. |
| Cathode | Reverse-biased clamping terminal | Marked with band; connected to protected line (e.g., 12 V rail); avalanches when voltage exceeds VBR to clamp and shunt energy. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables compliance with ISO 7637-2 Pulse 5a (load dump) without external series impedance or derating. |
| Glass passivated junction | Improves long-term stability and moisture resistance versus epoxy-passivated alternatives - essential for under-hood automotive longevity. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain and body electronics where field failure risk must be minimized. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without pre-baking or special handling - reduces manufacturing cost and complexity. |
| Low profile SMBG package | 0.030" height (0.76 mm) enables compact layout in space-constrained ECUs and ADAS modules. |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in engine control units against load dump transients up to 40 V. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VCC and GND, clamping within nanoseconds to limit voltage excursion below 16 V. Use Value: Prevents latch-up or permanent damage to 5 V LDO regulators and MCU I/O pins during ISO 7637-2 Pulse 5a events. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) from ESD and inductive switching noise in factory automation sensors. IC Role / Device Role / Timing Role: Bidirectional-capable but used unidirectionally across signal-to-ground; responds in <1 ps to 8 kV HBM ESD pulses. Use Value: Maintains signal integrity by limiting transient-induced offset errors and preventing ADC saturation during EMC testing. |
| Telecom DC Power Interface | Consumer Device USB Port Protection |
|
Use Scenario: Clamping surges on -48 V telecom rectifier outputs feeding base station backplane logic. IC Role / Device Role / Timing Role: Reverse-connected unidirectional TVS referenced to chassis ground; clamps negative-going transients on negative rail. Use Value: Absorbs 600 W surges without degradation, enabling single-device protection instead of stacked Zener arrays. |
Use Scenario: Protecting USB 2.0 D+ and D- lines from human-body-model ESD in portable speakers and docking stations. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF typical at 0 V) unidirectional TVS placed inline with data lines to minimize signal distortion. Use Value: Passes USB 2.0 eye diagram compliance while suppressing >15 kV contact ESD per IEC 61000-4-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A-E3/52 | Same VWM (9.0 V), VBR (10.0–11.1 V), and VC (15.4 V), but rated for 600 W in SMB (DO-214AA) package - 0.205" × 0.135" vs. SMBG's 0.255" × 0.155". | SMB package has higher thermal resistance (RθJA = 110 °C/W vs. SMBG's 100 °C/W); less suitable for sustained high-temperature under-hood use. | Select SMBG9.0A-E3/52 when board space allows larger footprint and thermal performance is prioritized; choose SMBJ9.0A-E3/52 only if legacy SMB layout reuse is required. |
| 1.5SMC9.0A | Same electrical specs but in larger SMC (DO-214AB) package; 1.5 kW peak power rating, though derated to 600 W at 0.01 % duty cycle per standard test conditions. | SMC offers superior thermal dissipation (RθJA ≈ 60 °C/W) but requires 3× PCB area; not suitable for dense automotive modules. | Choose 1.5SMC9.0A only for industrial power supplies where layout space and cooling margin permit larger footprint and higher surge margin is needed. |
Compared with SMBJ9.0A-E3/52 and 1.5SMC9.0A, SMBG9.0A-E3/52 delivers optimal balance of automotive-grade reliability (AEC-Q101), compact SMBG footprint, and verified 600 W clamping performance at +150 °C - making it the preferred choice for new ECU designs requiring both space efficiency and under-hood robustness.
Availability
SMBG9.0A-E3/52 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBG9.0A-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 automotive, industrial, and computing applications.
The SMBG series was engineered specifically for AEC-Q101-compliant transient suppression in space-constrained automotive modules - combining low-profile packaging, glass passivation, and repeatable clamping performance across temperature extremes.
FAQ
What is the clamping voltage of SMBG9.0A-E3/52 at its rated peak pulse current?
The SMBG9.0A-E3/52 has a maximum clamping voltage (VC) of 15.4 V at 39.0 A peak pulse current (IPPM) using the 10/1000 μs waveform. This value is measured under standardized test conditions per ANSI/IEEE C62.35 and guarantees that protected circuitry sees no more than 15.4 V during a defined surge event - critical for ensuring compatibility with 16 V-tolerant automotive ICs. The SMBG9.0A-E3/52 maintains this clamping performance across its full operating temperature range.
Is SMBG9.0A-E3/52 qualified for automotive applications?
Yes, SMBG9.0A-E3/52 is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JESD22-A114. This qualification confirms its suitability for automotive powertrain, body, and infotainment systems where reliability under thermal and electrical stress is mandatory. The SMBG9.0A-E3/52 is explicitly listed in Vishay's AEC-Q101 qualified product matrix with suffix HE3/HM3 variants - and the E3/52 variant shares identical die and construction.
What does the "E3/52" suffix mean in SMBG9.0A-E3/52?
The "E3" suffix indicates RoHS-compliant, industrial-grade construction with matte tin-plated leads; "52" denotes the preferred package code for 7" diameter plastic tape-and-reel delivery with 750 units per reel. This ordering format aligns with Vishay's standard logistics coding and ensures compatibility with automated SMT pick-and-place equipment. The SMBG9.0A-E3/52 is not AEC-Q101 qualified by suffix alone - qualification is confirmed via device marking and Vishay's official Q101 list, which includes this part number.
How does SMBG9.0A-E3/52 differ from bidirectional versions like SMBG9.0CA?
SMBG9.0A-E3/52 is unidirectional, featuring a cathode band for polarity-sensitive placement and conducting only in reverse avalanche mode; SMBG9.0CA is bidirectional with symmetrical clamping in both directions and no polarity marking. Electrically, SMBG9.0CA has identical VWM (9.0 V), VBR (10.0–11.1 V), and VC (15.4 V), but its dual-junction structure increases capacitance slightly. Use SMBG9.0A-E3/52 for DC rail protection where polarity is fixed; choose SMBG9.0CA only for AC-coupled or floating signal lines requiring symmetric transient suppression.
What is the maximum operating temperature for SMBG9.0A-E3/52?
The SMBG9.0A-E3/52 has a maximum operating junction temperature (TJ max) of +150 °C and a storage temperature range of -55 °C to +150 °C. Its thermal resistance junction-to-ambient (RθJA) is 100 °C/W when mounted on 0.2" × 0.2" copper pads - enabling reliable operation in under-hood automotive environments without forced cooling. Derating curves in the datasheet confirm usable power dissipation down to 50 % of rated PPPM at +125 °C ambient, confirming robustness for SMBG9.0A-E3/52 in real-world ECU deployments.
SMBG9.0A-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 39A
- 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)
SMBG9.0A-E3/52 FAQ
1.How can I place an order for SMBG9.0A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG9.0A-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 SMBG9.0A-E3/52 reliable?
The price and inventory of SMBG9.0A-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 SMBG9.0A-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG9.0A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG9.0A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG9.0A-E3/52?
SMBG9.0A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG9.0A-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 SMBG9.0A-E3/52?
For technical support, including SMBG9.0A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG9.0A-E3/52 requirements.
6.How does Aetrix verify that SMBG9.0A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG9.0A-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 SMBG9.0A-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG9.0A-E3/52?
All SMBG9.0A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG9.0A-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 SMBG9.0A-E3/52 part is unused and in its original packaging.
Return procedure for SMBG9.0A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG9.0A-E3/52 Tags
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