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Vishay General Semiconductor - Diodes Division SMBJ75CA-M3/52
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- Part No.:
- SMBJ75CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ75CA-M3/52.pdf
- Description:
- TVS DIODE 75VWM 121VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,123
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Product details
Overview
SMBJ75CA-M3/52 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 75 V stand-off voltage (VWM), 83.3–92.1 V breakdown voltage (VBR) at 1 mA, 121 V maximum clamping voltage (VC) at 5.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, sensor interfaces, and industrial I/O circuits against ESD and inductive switching surges.
For engineers reviewing the SMBJ75CA-M3/52 datasheet, SMBJ75CA-M3/52 pinout, SMBJ75CA-M3/52 application, or SMBJ75CA-M3/52 equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VWM = 1.61), halogen-free RoHS-compliant construction (M3 suffix), and compatibility with automated SMT placement on PCBs requiring robust surge immunity per IEC 61000-4-2/4-4/4-5.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance regardless of transient polarity. Its silicon avalanche junction provides sub-nanosecond response time and low dynamic impedance (< 24 Ω, derived from ΔVC/ΔIPPM), enabling effective suppression of fast-rising transients up to 5.0 A peak pulse current under standardized 10/1000 µs conditions.
The device is rated for continuous operation from –55 °C to +150 °C junction temperature, with thermal resistance of 100 °C/W (junction-to-ambient, on recommended 0.2" × 0.2" copper pads) and 20 °C/W (junction-to-lead). It meets MSL Level 1 per J-STD-020 and is halogen-free, RoHS-compliant (M3 suffix), but not AEC-Q101 qualified - distinguishing it from HE3/HM3 automotive variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC/AC working margin for protected line. |
| VBR (min/max) | 83.3 V / 92.1 V at 1 mA - Guaranteed avalanche initiation range; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 121 V at 5.0 A - Clamped voltage seen by downstream circuitry during 600 W transient; determines maximum stress on protected ICs. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; supports repetitive surge duty cycle ≤ 0.01 %. |
| IPPM | 5.0 A - Corresponding peak pulse current at VC; used with PCB trace inductance to estimate actual clamping overshoot. |
| Leakage ID | 1.0 µA max at 75 V - Minimal standby power loss and signal integrity impact in high-impedance sensing paths. |
| TJ max | +150 °C - Enables use in thermally constrained industrial enclosures without derating below full power. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - symmetrical anode/cathode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode / Anode (symmetrical) | Bidirectional avalanche junction terminal | Either end connects to protected line; no cathode band marking - enables flexible PCB layout without orientation constraints. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Supports high-energy surge events common in industrial motor drives and relay-controlled loads without degradation. |
| Bidirectional clamping symmetry | Eliminates need for polarity-aware placement - simplifies layout and reduces BOM count in AC-coupled or floating signal paths. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for consumer, telecom, and industrial equipment sold in EU/Asia markets. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life before reflow; compatible with standard SMT assembly without baking or dry-pack handling. |
| Low clamping ratio (VC/VWM = 1.61) | Minimizes overvoltage exposure to downstream components - critical for 3.3 V/5 V logic interfacing with 75 V bus lines. |
Applications
| Industrial Motor Control I/O Protection | Automotive Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Protecting PLC digital input modules from inductive kickback when switching 24 V DC solenoids or contactors. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input terminals to clamp ±1 kV EFT bursts and 600 V lightning-induced surges. Use Value: Limits transient voltage to ≤121 V, preventing damage to optocoupler input stages and microcontroller GPIOs rated for 36 V absolute maximum. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in engine control units from load dump and jump-start transients. IC Role / Device Role / Timing Role: Clamping element on 5 V sensor supply rail, responding within <1 ns to suppress 100 V/100 ms load dump spikes. Use Value: Maintains sensor output stability by holding rail voltage below 121 V, avoiding ADC saturation and system reset triggers. |
| Telecom Power Interface Protection | Consumer Appliance Communication Bus |
|
Use Scenario: Safeguarding PoE-powered Ethernet switch ports against cable discharge events and induced surges from nearby AC wiring. IC Role / Device Role / Timing Role: Secondary-level TVS on 48 V DC bias line, coordinated with primary GDT and series impedance for multi-stage protection. Use Value: Provides precise 75 V standoff and 121 V clamping to preserve IEEE 802.3af compliance while limiting let-through energy to <10 mJ. |
Use Scenario: Protecting UART/I²C lines in smart home appliances (e.g., washing machine control boards) from ESD and board-level coupling. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF at 0 V) bidirectional clamp on 3.3 V communication rails adjacent to high-noise motor drivers. Use Value: Prevents data corruption by clamping ESD pulses to <121 V without adding signal distortion - verified per IEC 61000-4-2 Level 4 (±15 kV air). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA-E3/52 | Same electrical specs; RoHS-compliant but contains brominated flame retardants (non-halogen-free). | Acceptable for commercial-grade products where halogen-free certification is not mandated (e.g., non-EU export models). | Select when cost sensitivity outweighs halogen-free requirement and MSL Level 1 handling suffices. |
| SMBJ75CAHM3/52 | Identical electrical and mechanical specs; adds AEC-Q101 qualification and extended temperature validation (–40 °C to +125 °C ambient). | Required for automotive ECUs, ADAS sensors, and other automotive-grade designs needing formal reliability certification. | Choose for automotive applications - adds qualification overhead but guarantees long-term reliability in harsh environments. |
Compared with SMBJ75CA-M3/52, the E3 variant offers lower cost without halogen-free compliance, while the HM3 variant adds AEC-Q101 qualification for automotive use - neither is pin-compatible drop-in replacements due to differing qualification scope and material declarations, though all share identical SMB package and bidirectional functionality.
Availability
SMBJ75CA-M3/52 is available at Aetrix Electronics and suitable for industrial motor control I/O protection, telecom power interface hardening, and consumer appliance communication bus safeguarding requiring stable component supply and halogen-free compliance.
Supply support for SMBJ75CA-M3/52 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 power MOSFETs with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series targets board-level transient protection in industrial, telecom, and consumer systems - engineered for high pulse power density, low clamping voltage, and seamless SMT integration in space-constrained designs.
FAQ
What is the clamping voltage of SMBJ75CA-M3/52 at its rated peak pulse current?
The SMBJ75CA-M3/52 has a maximum clamping voltage (VC) of 121 V at 5.0 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ75CA-M3/52 maintains this clamping performance bidirectionally, making it suitable for AC-coupled or floating signal lines where polarity reversal may occur.
Is SMBJ75CA-M3/52 suitable for automotive applications?
No, SMBJ75CA-M3/52 is not AEC-Q101 qualified. It is rated for commercial temperature range (–55 °C to +150 °C junction) but lacks the extended validation, lot traceability, and stress testing required for automotive ECUs or ADAS modules. For automotive use, select SMBJ75CAHM3/52 instead - the same SMBJ75CA-M3/52 device with added AEC-Q101 qualification and halogen-free compliance.
Does SMBJ75CA-M3/52 have polarity markings on the package?
No, SMBJ75CA-M3/52 has no polarity markings because it is a bidirectional TVS diode. Unlike unidirectional variants (e.g., SMBJ75A), the CA suffix indicates symmetrical avalanche behavior - both terminals function identically as either anode or cathode depending on transient polarity. This eliminates orientation constraints during automated placement and simplifies PCB layout for differential or AC signal paths.
What is the maximum steady-state power dissipation for SMBJ75CA-M3/52?
The SMBJ75CA-M3/52 has a maximum steady-state power dissipation (PD) of 5.0 W at 50 °C ambient temperature with infinite heatsink conditions. In typical PCB mounting (0.2" × 0.2" copper pads per terminal), derating applies above 25 °C ambient per Figure 2 in the datasheet. This PD rating governs continuous leakage power handling but is distinct from its 600 W transient capability - the latter applies only to short-duration pulses with ≤0.01 % duty cycle.
How does the M3 suffix differ from E3 in SMBJ75CA-M3/52?
The M3 suffix in SMBJ75CA-M3/52 denotes halogen-free, RoHS-compliant construction using bromine-free flame retardants in the molding compound, whereas E3 uses RoHS-compliant materials that may contain halogens. Both meet RoHS Directive 2011/65/EU, but M3 satisfies stricter regional requirements (e.g., Japan's JIS C 0950, China's SJ/T 11364-2014). Electrically and mechanically, SMBJ75CA-M3/52 and SMBJ75CA-E3/52 are identical - only material composition differs.
SMBJ75CA-M3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 121V
- Current - Peak Pulse (10/1000µs):
- 5A
- 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 (SMBJ)
SMBJ75CA-M3/52 FAQ
1.How can I place an order for SMBJ75CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ75CA-M3/52 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 SMBJ75CA-M3/52 reliable?
The price and inventory of SMBJ75CA-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ75CA-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ75CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ75CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ75CA-M3/52?
SMBJ75CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ75CA-M3/52 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 SMBJ75CA-M3/52?
For technical support, including SMBJ75CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ75CA-M3/52 requirements.
6.How does Aetrix verify that SMBJ75CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ75CA-M3/52 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 SMBJ75CA-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ75CA-M3/52?
All SMBJ75CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ75CA-M3/52, 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 SMBJ75CA-M3/52 part is unused and in its original packaging.
Return procedure for SMBJ75CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ75CA-M3/52 Tags
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