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Vishay General Semiconductor - Diodes Division SMBG90A-E3/5B
- Part No.:
- SMBG90A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG90A-E3/5B.pdf
- Description:
- TVS DIODE 90VWM 146VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,395
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Product details
Overview
SMBG90A-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 90 V stand-off voltage (VWM), 100 V minimum breakdown voltage (VBR), 146 V maximum clamping voltage (VC) at 4.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive power supply rails and industrial sensor interfaces.
For engineers reviewing the SMBG90A-E3/5B datasheet, SMBG90A-E3/5B pinout, SMBG90A-E3/5B application, or SMBG90A-E3/5B equivalent, this page delivers verified package dimensions, clamping performance under surge conditions, AEC-Q101 qualification status, thermal resistance data, and direct alternatives for circuit-level ESD/surge hardening.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when reverse-biased voltage exceeds VBR (100–111 V), it avalanches to limit transient energy across protected nodes. Its low incremental surge resistance ensures stable clamping during repetitive 10/1000 µs pulses up to 600 W, with thermal resistance RθJA = 100 °C/W enabling reliable operation on standard 5.0 mm × 5.0 mm copper pads.
Designed for automotive-grade reliability, SMBG90A-E3/5B meets AEC-Q101 stress testing requirements and is RoHS-compliant (E3 suffix). The SMBG (DO-215AA) package supports automated placement and withstands lead-free reflow up to 260 °C (MSL Level 1), while its glass-passivated junction ensures long-term stability under thermal cycling and humidity exposure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for normal circuit operation. |
| VBR (min/max) | 100 V / 111 V at 1 mA - Breakdown threshold range defining turn-on consistency; critical for timing of protection activation. |
| VC @ IPPM | 146 V at 4.1 A - Clamped voltage during full 600 W surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; defines survivability against lightning-induced surges per IEC 61000-4-5. |
| IFSM | 100 A - Non-repetitive forward surge current rating (8.3 ms half-sine); validates capability to absorb inductive kickback in relay/MOSFET drive circuits. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments and high-ambient industrial enclosures. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on standard 5.0 mm × 5.0 mm pads; informs PCB copper area requirements for thermal management. |
Pinout & Package
The SMBG90A-E3/5B uses the SMBG (DO-215AA) surface-mount package: 2-terminal, gull-wing leads, cathode marked by a band, overall dimensions 6.48 mm × 3.94 mm × 2.16 mm (L × W × H), compliant with UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse bias reference | Connected to ground or lower-potential node in unidirectional configuration; establishes polarity-dependent clamping direction. |
| Cathode | Clamping output / Surge current sink | Connected to protected line (e.g., 12 V rail); conducts avalanche current to ground during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics applications requiring extended temperature cycling, mechanical shock, and humidity resistance. |
| 600 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surge events (4 kV line-to-ground) without degradation when properly mounted. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage overshoot during fast transients, reducing risk of latch-up or gate oxide damage in protected MOSFETs and microcontrollers. |
| MSL Level 1, 260 °C peak reflow | Enables compatibility with standard lead-free SMT assembly processes without preconditioning or special handling. |
| Glass passivated junction | Provides stable leakage current (<1.0 µA at VWM) and long-term reliability under thermal stress and humidity exposure. |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients (ISO 7637-2 Pulse 5a, up to 120 V). IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and chassis ground to clamp surges within 1 ns response time. Use Value: Limits peak voltage to ≤146 V during 600 W surges, preventing damage to 36 V-rated DC-DC converters and CAN transceivers. | Use Scenario: Safeguarding analog sensor inputs (e.g., pressure, temperature) in PLC modules exposed to field wiring ESD and inductive switching noise. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across differential signal pair to divert common-mode transients before front-end op-amps. Use Value: Maintains signal integrity with <1.0 µA leakage at 90 V, while clamping 8 kV contact ESD (IEC 61000-4-2) to safe levels for 16-bit ADCs. |
| Telecom Line Card Surge Suppression | Consumer Power Adapter Input Protection |
Use Scenario: Front-end protection for PoE-powered network switches subjected to lightning-induced surges on Ethernet ports. IC Role / Device Role / Timing Role: Primary shunt device on 48 V DC input bus, coordinated with secondary GDT or polymer PTC for multi-stage defense. Use Value: Absorbs 600 W single-event surges without thermal runaway, preserving upstream fuse integrity and system uptime. | Use Scenario: Overvoltage suppression on AC/DC adapter primary-side rectified output feeding SMPS controllers. IC Role / Device Role / Timing Role: Unidirectional TVS placed across bulk capacitor to clamp transformer leakage spikes and MOSFET switching overshoot. Use Value: Enables compact design with 146 V clamping ceiling, allowing use of 200 V-rated electrolytic capacitors instead of 250 V parts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90A-E3/5B | Same VWM (90 V), but lower PPPM = 600 W (same rating), higher VC = 150 V, and SMB (DO-214AA) package (larger footprint, higher RθJA). | Less suitable for space-constrained automotive modules due to larger 4.57 mm × 3.94 mm footprint and 125 °C/W thermal resistance. | Select SMBG90A-E3/5B when board space is limited and thermal performance on small pads is critical. |
| SMAJ90A-E3/5B | Same VWM (90 V), but lower PPPM = 400 W, VC = 146 V, and SMA (DO-214AC) package (smaller than SMBG, but lower surge rating). | Insufficient for ISO 7637-2 Pulse 5a compliance; limited to low-energy ESD-only scenarios in consumer USB ports or audio jacks. | Choose SMBG90A-E3/5B for automotive or industrial applications requiring full 600 W surge immunity. |
Compared with SMBJ90A-E3/5B and SMAJ90A-E3/5B, SMBG90A-E3/5B delivers identical clamping voltage but in a smaller, thermally superior DO-215AA package - making it optimal for high-density automotive modules where layout area and thermal margin are constrained.
Availability
SMBG90A-E3/5B is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, and telecom line card surge suppression requiring stable component supply and AEC-Q101 assurance.
Supply support for SMBG90A-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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The SMBG TransZORB® series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure modes must be mitigated without compromising size or thermal performance.
FAQ
What is the clamping voltage of SMBG90A-E3/5B at its rated peak pulse current?
The SMBG90A-E3/5B has a maximum clamping voltage (VC) of 146 V at its specified peak pulse current of 4.1 A (10/1000 µs waveform). This value is measured under standardized test conditions with 0.2" × 0.2" copper pads and represents the upper voltage limit imposed on protected circuitry during a full 600 W transient event. The SMBG90A-E3/5B maintains this clamping performance consistently across its qualified operating temperature range.
Is SMBG90A-E3/5B suitable for automotive applications?
Yes, SMBG90A-E3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and infotainment power supplies. Its 150 °C maximum junction temperature, MSL Level 1 reflow compatibility, and validated performance under thermal cycling and humidity stress meet automotive reliability requirements. The SMBG90A-E3/5B is commonly deployed in 12 V and 24 V battery rail protection per ISO 7637-2 standards.
What does the "E3/5B" suffix indicate in SMBG90A-E3/5B?
The "E3" suffix denotes RoHS-compliant, industrial-grade construction with matte tin-plated leads; "5B" specifies packaging in 13-inch diameter plastic tape and reel with a base quantity of 3200 units. This format supports high-volume SMT assembly and ensures consistent moisture sensitivity level (MSL Level 1) handling. The SMBG90A-E3/5B is not halogen-free (that would require "M3" suffix) nor AEC-Q101 enhanced ("HE3" or "HM3").
How does SMBG90A-E3/5B differ from bidirectional variants like SMBG90CA?
SMBG90A-E3/5B is unidirectional and features a cathode band marking; it conducts only in reverse avalanche mode and blocks forward current above ~3.5 V. In contrast, SMBG90CA is bidirectional with symmetrical clamping in both polarities and no polarity marking. The SMBG90A-E3/5B is used where DC bias exists (e.g., positive power rails), while SMBG90CA suits AC-coupled or floating signal lines like RS-485 or Ethernet pairs.
What is the maximum reverse leakage current for SMBG90A-E3/5B at its stand-off voltage?
The SMBG90A-E3/5B exhibits a maximum reverse leakage current (ID) of 1.0 µA at its rated stand-off voltage (VWM) of 90 V and ambient temperature of 25 °C. This low leakage ensures minimal power loss in always-on automotive modules and preserves accuracy in high-impedance sensor bias networks. Leakage remains below 5 µA up to 125 °C, as confirmed in Vishay's thermal derating curves.
SMBG90A-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):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 146V
- Current - Peak Pulse (10/1000µs):
- 4.1A
- 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)
SMBG90A-E3/5B FAQ
1.How can I place an order for SMBG90A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG90A-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 SMBG90A-E3/5B reliable?
The price and inventory of SMBG90A-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 SMBG90A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG90A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG90A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG90A-E3/5B?
SMBG90A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG90A-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 SMBG90A-E3/5B?
For technical support, including SMBG90A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG90A-E3/5B requirements.
6.How does Aetrix verify that SMBG90A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG90A-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 SMBG90A-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG90A-E3/5B?
All SMBG90A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG90A-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 SMBG90A-E3/5B part is unused and in its original packaging.
Return procedure for SMBG90A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG90A-E3/5B Tags
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