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Vishay General Semiconductor - Diodes Division SMBJ75CD-M3/H
- Part No.:
- SMBJ75CD-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ75CD-M3/H.pdf
- Description:
- TVS DIODE 75VWM 119VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,613
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Product details
Overview
SMBJ75CD-M3/H from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 75 V standoff voltage (VWM), 84.6–90.8 V breakdown voltage (VBR) at 1 mA, 119 V maximum clamping voltage (VC) at 5.06 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 μs waveform), used in industrial sensor interface protection.
For engineers reviewing the SMBJ75CD-M3/H datasheet, SMBJ75CD-M3/H pinout, SMBJ75CD-M3/H application, or SMBJ75CD-M3/H equivalent, key selection criteria include bidirectional clamping capability, ±3.5 % VBR tolerance, low leakage (<0.5 μA at VWM), MSL Level 1 moisture sensitivity, and halogen-free RoHS-compliant construction with matte tin-plated leads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling suppression of positive and negative transients without polarity constraints. Its silicon avalanche structure delivers sub-nanosecond response time and low incremental surge resistance to maintain stable clamping under fast-rising ESD or lightning-induced surges.
The device is rated for 150 °C maximum junction temperature and derates linearly above 25 °C ambient, with thermal resistance of 125 °C/W (junction-to-ambient, minimum pad layout) and 20 °C/W (junction-to-mount). It meets UL 497B recognition (QVGQ2) and complies with JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 84.6 V / 90.8 V at 1 mA - Tight ±3.5 % tolerance ensures predictable turn-on across production lots |
| VC @ IPPM | 119 V at 5.06 A - Clamping voltage during 10/1000 μs surge defines worst-case overvoltage seen by protected circuit |
| PPPM | 600 W - Peak transient energy handling capacity per single 10/1000 μs pulse at 0.01 % duty cycle |
| ID @ VWM | <0.5 μA - Ultra-low leakage preserves signal integrity and minimizes standby power loss |
| TJ max | 150 °C - Enables reliable operation in high-temperature industrial environments |
| Package | SMB (DO-214AA) - Standardized surface-mount outline compatible with automated assembly and IPC-7351 footprints |
Pinout & Package
Two-terminal bidirectional device in SMB (DO-214AA) package; no polarity marking required. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD22-B102, with M3 suffix indicating halogen-free, RoHS-compliant, industrial-grade construction meeting JESD201 Class 2 whisker test.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; bidirectional clamping occurs regardless of voltage polarity applied |
| Case (body) | Thermal and mechanical interface | Exposed copper area provides primary heat dissipation path to PCB copper pad (min. 5.0 mm × 5.0 mm recommended) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| ±3.5 % VBR tolerance | Reduces design margin overhead and improves consistency in multi-channel systems |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without baking preconditioning |
| 600 W peak pulse power | Handles IEC 61000-4-5 Level 4 surge (4 kV line-earth, 2 kV line-line) in properly laid-out designs |
| UL 497B recognized | Validates suitability for telecom and industrial communication port protection per safety standards |
Applications
| Industrial Sensor Interface Protection | Telecom Line Interface |
|---|---|
Use Scenario: Protecting analog output lines (e.g., 4–20 mA, 0–10 V) of pressure or temperature sensors exposed to inductive switching noise in factory automation cabinets. IC Role / Device Role / Timing Role: Bidirectional TVS placed between signal line and ground to clamp both positive and negative transients before they reach ADC input or isolation amplifier. Use Value: Prevents latch-up or damage to precision front-end circuitry while maintaining signal fidelity due to low leakage (<0.5 μA) and tight VBR tolerance. | Use Scenario: Shielding RS-485 transceiver pins (A/B) against lightning-induced surges on outdoor data links in building management systems. IC Role / Device Role / Timing Role: Placed differentially across A–B lines and common-mode to ground to suppress both differential and common-mode transients per IEC 61000-4-5. Use Value: Delivers 119 V clamping at 5.06 A, limiting stress on transceiver ESD structures and ensuring interoperability with UL 497B-compliant system-level certification. |
| Automotive Body Control Module (BCM) Inputs | Consumer Appliance Motor Drive Feedback |
Use Scenario: Safeguarding microcontroller GPIOs connected to door lock actuators or window switch inputs subject to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Mounted directly at connector entry point to shunt transient energy before it propagates into 3.3 V or 5 V logic rails. Use Value: Withstands 150 °C junction temperature and maintains stable clamping performance across automotive temperature range (−40 °C to +125 °C ambient). | Use Scenario: Protecting hall-effect sensor outputs feeding motor commutation logic in smart washing machines or HVAC blowers. IC Role / Device Role / Timing Role: Bidirectional suppression on low-voltage DC signal lines (e.g., 5 V hall sensor supply/output) exposed to brush-commutator noise. Use Value: Low capacitance (typ. <50 pF at 0 V) avoids signal edge degradation; M3 halogen-free construction satisfies appliance environmental compliance requirements. |
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 (Vishay) | Same electrical specs but lead (Pb)-free, RoHS-compliant, and halogen-free; identical SMB package and MSL Level 1 rating | No functional difference; differs only in packaging and compliance labeling | Select SMBJ75CA-E3/52 when full JEDEC-compliant Pb-free traceability is required beyond M3-grade industrial compliance |
| P6SMB75CA (Littelfuse) | Same 75 V VWM, 119 V VC, and 600 W PPPM; slightly higher VBR tolerance (±5 % vs. ±3.5 %); same SMB package | Compatible in most PCB layouts but may require validation of tighter VBR tolerance impact on system margin | Choose P6SMB75CA where second-source qualification is mandated, accepting minor VBR tolerance relaxation |
Compared with SMBJ75CD-M3/H, SMBJ75CA-E3/52 offers identical protection performance with enhanced Pb-free documentation, while P6SMB75CA provides cross-manufacturer redundancy at the cost of reduced VBR precision-both require no PCB changes but differ in compliance scope and tolerance-driven design margin.
Availability
SMBJ75CD-M3/H is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line protection, and automotive body control modules requiring stable component supply, long-term lifecycle support, and consistent bidirectional clamping performance.
Supply support for SMBJ75CD-M3/H 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 reliability, power efficiency, and industrial-grade robustness.
The SMBJ series is engineered for high-energy transient suppression in harsh environments, targeting applications demanding precise clamping, low leakage, and certified safety compliance across industrial, telecom, and automotive domains.
FAQ
What does the "CD" suffix indicate in SMBJ75CD-M3/H?
The "CD" suffix in SMBJ75CD-M3/H denotes a bidirectional configuration, meaning the device clamps voltage transients equally in both polarities. Unlike unidirectional variants (e.g., SMBJ75D), SMBJ75CD-M3/H has no cathode band and functions symmetrically across its two terminals-ideal for protecting AC-coupled or floating signal paths where polarity is undefined or alternating.
Is SMBJ75CD-M3/H compliant with RoHS and halogen-free requirements?
Yes, SMBJ75CD-M3/H is halogen-free, RoHS-compliant, and qualified to JESD201 Class 2 for whisker resistance. The "M3" suffix explicitly indicates industrial-grade construction meeting these environmental and reliability standards, with matte tin-plated leads solderable per J-STD-002 and JESD22-B102.
What is the maximum clamping voltage of SMBJ75CD-M3/H and at what current is it specified?
The maximum clamping voltage (VC) of SMBJ75CD-M3/H is 119 V, measured at a peak pulse current (IPPM) of 5.06 A using the standardized 10/1000 μs double-exponential waveform. This value represents the worst-case voltage imposed on the protected circuit during a surge event and is critical for ensuring downstream ICs remain within absolute maximum ratings.
Can SMBJ75CD-M3/H be used in place of a unidirectional TVS like SMBJ75D?
No-SMBJ75CD-M3/H is strictly bidirectional and lacks polarity marking, whereas SMBJ75D is unidirectional with a cathode band. Substituting SMBJ75CD-M3/H for SMBJ75D in DC-biased circuits may cause unintended conduction or failure to clamp correctly. Use only when the application inherently requires symmetrical protection, such as AC signal lines or differential buses.
What is the thermal resistance and power derating behavior of SMBJ75CD-M3/H?
SMBJ75CD-M3/H has a typical junction-to-ambient thermal resistance (RθJA) of 125 °C/W when mounted on the minimum recommended PCB pad layout. Its steady-state power dissipation drops from 1.0 W at 25 °C ambient to zero at 150 °C, following a linear derating curve per Figure 5 in the Vishay datasheet 87606-critical for thermal design in enclosed or high-ambient environments.
SMBJ75CD-M3/H 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):
- 84.6V
- Voltage - Clamping (Max) @ Ipp:
- 119V
- Current - Peak Pulse (10/1000µs):
- 5.06A
- 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)
SMBJ75CD-M3/H FAQ
1.How can I place an order for SMBJ75CD-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ75CD-M3/H 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 SMBJ75CD-M3/H reliable?
The price and inventory of SMBJ75CD-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ75CD-M3/H is usually 5 days.
3.What payment methods are accepted for SMBJ75CD-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ75CD-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ75CD-M3/H?
SMBJ75CD-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ75CD-M3/H 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 SMBJ75CD-M3/H?
For technical support, including SMBJ75CD-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ75CD-M3/H requirements.
6.How does Aetrix verify that SMBJ75CD-M3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ75CD-M3/H 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 SMBJ75CD-M3/H meets industry standards.
7.What is the process for return or replacement of SMBJ75CD-M3/H?
All SMBJ75CD-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ75CD-M3/H, 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 SMBJ75CD-M3/H part is unused and in its original packaging.
Return procedure for SMBJ75CD-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ75CD-M3/H Tags
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