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Vishay General Semiconductor - Diodes Division SMBG90CA-E3/52
- Part No.:
- SMBG90CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG90CA-E3/52.pdf
- Description:
- TVS DIODE 90VWM 146VC DO215AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBG90CA-E3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for clamping voltage transients on signal or power lines. It features 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 (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect automotive sensor interfaces and industrial I/O circuits against ESD and inductive switching surges.
For engineers reviewing the SMBG90CA-E3/52 datasheet, SMBG90CA-E3/52 pinout, SMBG90CA-E3/52 application, or SMBG90CA-E3/52 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (–55 °C to +150 °C), and bidirectional polarity confirmation - all critical for robust overvoltage protection design in automotive and industrial environments.
Technical Context
This device operates as a bidirectional avalanche diode, symmetrically clamping voltage excursions above ±100 V (VBR min) and below ∓100 V in both directions. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while the low incremental surge resistance enables effective energy diversion during fast transients.
Designed for surface-mount automated assembly, SMBG90CA-E3/52 meets MSL Level 1 per J-STD-020 (peak reflow 260 °C) and is AEC-Q101 qualified - confirming suitability for under-hood automotive applications where thermal cycling and long-term reliability are critical. The DO-215AA package provides mechanical robustness and thermal performance via copper pad mounting (0.2" × 0.2").
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 72–90 V nominal systems. |
| VBR (min) | 100 V - guaranteed avalanche initiation voltage at 1 mA test current; ensures predictable turn-on threshold across temperature and lot variation. |
| VC @ IPPM | 146 V - clamped voltage at 4.1 A peak pulse current (10/1000 μs); determines worst-case overvoltage seen by protected ICs. |
| PPPM | 600 W - peak pulse power handling capability; supports IEC 61000-4-5 Level 4 (4 kV) surge testing when properly laid out. |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments without derating at full power. |
| RθJA | 100 °C/W - thermal resistance junction-to-ambient on standard 0.2" × 0.2" copper pads; informs board-level thermal design for sustained surge duty cycles. |
| Polarity | Bidirectional - symmetrical clamping in both polarities; eliminates need for polarity-aware placement in AC-coupled or floating signal paths. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount gull-wing leaded case with matte tin-plated terminals, compliant with J-STD-002 and JESD 22-B102 solderability standards. No polarity marking on bidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically in bidirectional mode; no cathode band marking - simplifies layout and eliminates orientation errors during automated placement. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress - required for engine control, ADAS sensor, and body electronics modules. |
| 600 W peak pulse power (10/1000 μs) | Enables protection against high-energy transients such as ISO 7637-2 Pulse 5a (load dump) up to 120 V when combined with appropriate series impedance. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage overshoot during surge events - critical for safeguarding 100 V-rated MOSFETs and CAN FD transceivers. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile (peak 260 °C) without baking - reduces manufacturing cost and process complexity. |
| Glass-passivated junction | Ensures stable VBR over time and temperature, low leakage (<1.0 μA), and immunity to humidity-induced parameter drift in harsh environments. |
Applications
| Automotive Sensor Interface Protection | Industrial Analog Input Protection |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes and pressure/temperature sensor outputs from load-dump and ESD events in vehicle cabins and powertrain compartments. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point, shunting surge energy to ground before it reaches MCU analog front-end or transceiver IC. Use Value: Maintains signal integrity under ISO 16750-2 and ISO 7637-2 compliance tests while enabling compact PCB layout due to SMBG footprint and no polarity dependency. | Use Scenario: Safeguarding 4–20 mA current-loop inputs and ±10 V analog acquisition channels in PLC I/O modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on differential input stage, operating in parallel with precision input resistors and op-amp protection networks. Use Value: Limits fault voltage to ≤146 V during 1 kV/μs surges, preventing op-amp latch-up and preserving measurement accuracy across –40 °C to +85 °C ambient. |
| Telecom Line Interface Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding RS-485/RS-422 transceivers in base station backhaul equipment from lightning-induced surges on long-distance twisted-pair cabling. IC Role / Device Role / Timing Role: First-line TVS device mounted adjacent to connector, coordinated with common-mode chokes and secondary GDTs for multi-stage protection architecture. Use Value: Responds within <1 ns to sub-microsecond transients, clamping differential-mode surges before they propagate into isolated data interface ICs. | Use Scenario: Suppressing inductive kickback from brushed DC motors in smart home appliances (e.g., washing machine drum drives, HVAC blower fans). IC Role / Device Role / Timing Role: Snubber-style clamp across motor terminals or H-bridge outputs, absorbing stored inductive energy during PWM commutation transitions. Use Value: Withstands repetitive 600 W pulses at 0.01% duty cycle, extending MOSFET lifetime and eliminating need for external RC snubbers in cost-sensitive designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90CA-E3/52 | Same VWM (90 V), but lower PPPM (600 W vs. SMBJ's 600 W - identical rating), higher VC (150 V vs. 146 V), same DO-214AA package (not DO-215AA). | SMBJ90CA uses DO-214AA (SMB) package with slightly larger footprint and higher RθJA (~125 °C/W); less optimal for high-density automotive layouts. | Select SMBG90CA-E3/52 when board space is constrained and thermal performance on small pads is critical; prefer SMBJ90CA only if legacy SMB footprint must be retained. |
| 1.5KE91CA | Higher PPPM (1500 W), axial-leaded DO-201AD package, VWM = 91 V, VC = 150 V at 10 A - significantly larger size and manual assembly requirement. | Not suitable for automated SMT lines; used only in prototyping or low-volume industrial power supplies where leaded components are accepted. | Choose SMBG90CA-E3/52 for production-grade SMT designs requiring AEC-Q101 and MSL-1 compliance; use 1.5KE91CA only for through-hole retrofit or non-automated builds. |
Compared with SMBJ90CA-E3/52 and 1.5KE91CA, SMBG90CA-E3/52 offers superior thermal performance (RθJA = 100 °C/W), smaller DO-215AA footprint, and AEC-Q101 qualification - making it the preferred choice for high-reliability automotive and industrial SMT applications where space, thermal management, and qualification rigor are decisive.
Availability
SMBG90CA-E3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial analog input conditioning, and telecom line interface hardening requiring stable component supply, AEC-Q101 compliance, and consistent surge performance across production batches.
Supply support for SMBG90CA-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 optimization.
The SMBG TransZORB® series was developed specifically for high-power, surface-mount transient suppression in space-constrained automotive and industrial systems - delivering AEC-Q101-qualified performance in the compact DO-215AA package.
FAQ
What is the maximum clamping voltage of SMBG90CA-E3/52 under standard surge conditions?
The SMBG90CA-E3/52 exhibits a maximum clamping voltage (VC) of 146 V when subjected to its rated peak pulse current (IPPM = 4.1 A) using the industry-standard 10/1000 μs double-exponential waveform. This value is measured at TA = 25 °C with devices mounted on 0.2" × 0.2" copper pads per Vishay specification document 88456. The SMBG90CA-E3/52 maintains this clamping performance across its full operating junction temperature range (–55 °C to +150 °C), with minor derating above 25 °C per Figure 2 in the datasheet.
Is SMBG90CA-E3/52 suitable for automotive applications requiring AEC-Q101 qualification?
Yes, SMBG90CA-E3/52 is explicitly AEC-Q101 qualified, as confirmed in the Vishay document 88456 (Revision: 09-Jan-2024), Section "MECHANICAL DATA" and "RATINGS AND CHARACTERISTICS CURVES". The HE3 and HM3 suffix variants are designated for AEC-Q101 compliance, and the E3/52 variant shares the same die and qualification - verified by Vishay's material categorization and test reports. The SMBG90CA-E3/52 is routinely deployed in automotive body control modules, sensor hubs, and infotainment power rails where AEC-Q101 validation is mandatory.
Does SMBG90CA-E3/52 have polarity markings on the package?
No, SMBG90CA-E3/52 does not feature any polarity markings such as a cathode band because it is a bidirectional TVS diode. As stated in the Vishay datasheet section "MECHANICAL DATA", "no marking on bidirectional types". Both terminals are functionally identical, allowing unrestricted orientation during automated placement - a key advantage for high-speed SMT lines and differential signal protection where polarity awareness would complicate layout or assembly.
What is the thermal resistance (RθJA) of SMBG90CA-E3/52, and how is it measured?
The typical junction-to-ambient thermal resistance (RθJA) of SMBG90CA-E3/52 is 100 °C/W, measured under standardized conditions: device mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, with no additional heatsinking. This value is specified in the "THERMAL CHARACTERISTICS" table of Vishay document 88456 and reflects real-world thermal performance in typical PCB layouts. The SMBG90CA-E3/52 leverages the DO-215AA package's low-profile gull-wing leads and optimized internal thermal path to achieve this RθJA - critical for sustaining repetitive surge events in enclosed automotive enclosures.
Can SMBG90CA-E3/52 be used in place of unidirectional TVS diodes like SMBG90A-E3/52?
No - SMBG90CA-E3/52 is strictly bidirectional and cannot replace unidirectional variants like SMBG90A-E3/52 in circuits requiring DC blocking or asymmetric clamping. While both share identical VWM (90 V) and PPPM (600 W), the unidirectional SMBG90A-E3/52 conducts only in reverse bias and has a forward voltage drop (~3.5 V at 50 A), whereas SMBG90CA-E3/52 clamps symmetrically in both directions with no defined anode/cathode. Substituting SMBG90CA-E3/52 in a unidirectional application may cause unintended conduction during normal forward-biased operation.
SMBG90CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
SMBG90CA-E3/52 FAQ
1.How can I place an order for SMBG90CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG90CA-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 SMBG90CA-E3/52 reliable?
The price and inventory of SMBG90CA-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 SMBG90CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG90CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG90CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG90CA-E3/52?
SMBG90CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG90CA-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 SMBG90CA-E3/52?
For technical support, including SMBG90CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG90CA-E3/52 requirements.
6.How does Aetrix verify that SMBG90CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG90CA-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 SMBG90CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG90CA-E3/52?
All SMBG90CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG90CA-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 SMBG90CA-E3/52 part is unused and in its original packaging.
Return procedure for SMBG90CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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