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Vishay General Semiconductor - Diodes Division SMBJ75C-E3/52
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- Part No.:
- SMBJ75C-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ75C-E3/52.pdf
- Description:
- TVS DIODE 75VWM 134VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,400
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Product details
Overview
SMBJ75C-E3/52 from Vishay General Semiconductor is a unidirectional 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, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ75C-E3/52 datasheet, SMBJ75C-E3/52 pinout, SMBJ75C-E3/52 application, or SMBJ75C-E3/52 equivalent, key selection criteria include clamping performance under 10/1000 µs surge, thermal resistance (RθJA = 100 °C/W), unidirectional polarity marking, and RoHS-compliant matte tin-plated leads suitable for automated SMT assembly.
Technical Context
This TVS diode operates as a voltage-clamping protection device that remains high-impedance below VWM (75 V) and rapidly transitions to low-impedance conduction above VBR (min. 83.3 V) to shunt transient energy. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1.0 ps).
The SMBJ75C-E3/52 is rated for repetitive 600 W surges (10/1000 µs, 0.01% duty cycle), supports 100 A non-repetitive forward surge (8.3 ms half-sine), and maintains operation across -55 °C to +150 °C junction temperature range - enabling use in harsh-environment automotive and industrial control systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 75 V - maximum continuous reverse operating voltage before significant leakage begins; defines safe operating margin for protected circuitry. |
| VBR (Breakdown Voltage) | 83.3–92.1 V at 1 mA - voltage at which device enters avalanche conduction; ensures reliable triggering above normal operating rail. |
| VC (Clamping Voltage) | 121 V at IPPM = 5.0 A - peak voltage seen by downstream circuit during specified 10/1000 µs transient; determines protection level for sensitive loads. |
| PPPM (Peak Pulse Power) | 600 W - maximum transient energy absorption capability under standardized 10/1000 µs waveform; defines surge robustness. |
| ID (Reverse Leakage) | ≤1.0 µA at VWM - minimal off-state current; avoids loading of high-impedance signal or bias networks. |
| RθJA | 100 °C/W - thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; informs derating requirements for sustained power dissipation. |
| Polarity | Unidirectional - cathode marked by band; blocks reverse current until breakdown, suited for DC-biased rails like 48 V telecom supplies. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Molding compound meets UL 94 V-0 flammability rating. Polarity indicated by cathode band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to lower-potential side (e.g., ground or negative rail); completes clamping loop during overvoltage events. |
| Cathode | Avalanche conduction terminal / protected line connection | Connected to line being protected (e.g., 75 V supply rail); conducts when voltage exceeds VBR, diverting surge current to anode. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without derating on standard PCB pads. |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure per JESD22-A101. |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow assembly without moisture-induced popcorning or delamination. |
| RoHS-compliant, halogen-free option available | E3 suffix confirms compliance with EU RoHS Directive 2011/65/EU and JEDEC JS709E halogen-free requirements. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD or inductive switch-off), improving protection margin. |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
|
Use Scenario: Protection of gate drivers and bus voltage sensing circuits against switching transients from IGBT/MOSFET turn-off in 48 V DC bus systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed across DC link or gate-source terminals to clamp voltage spikes before they exceed MOSFET VDS or op-amp input ratings. Use Value: Limits transient voltage to ≤121 V at 5 A surge, preventing latch-up or die damage in isolated gate drivers and current-sense amplifiers. |
Use Scenario: Input-stage surge suppression on primary-side rectified rails in AC/DC adapters for base stations and remote radio units. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between rectified output and ground to absorb lightning-induced surges per IEC 61000-4-5. Use Value: Withstands 600 W pulses while maintaining <1 µA leakage at 75 V, avoiding standby power loss and ensuring long-term stability in 24/7 powered equipment. |
| Automotive Body Control Modules | Industrial Sensor Signal Conditioning |
|
Use Scenario: Protection of LIN bus transceivers and microcontroller I/O pins against load dump and jump-start transients in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Unidirectional TVS installed on power input and LIN data lines to clamp transients exceeding battery rail voltage. Use Value: AEC-Q101 qualified variants exist (HE3 suffix); this E3 version provides identical electrical specs for non-automotive BOM reuse with validated thermal performance up to TJ = 150 °C. |
Use Scenario: Guarding analog front-end inputs of precision ADCs in factory automation sensors exposed to relay coil flyback and EMI. IC Role / Device Role / Timing Role: Low-leakage TVS placed at signal entry point to suppress sub-microsecond transients without affecting 24-bit measurement accuracy. Use Value: 1.0 µA max reverse leakage at 75 V prevents DC offset drift in high-gain instrumentation amplifiers, preserving calibration integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A-E3/52 | Same VWM (75 V), VBR (83.3–92.1 V), VC (121 V), and package; differs only in marking code (A vs C) - functionally identical per Vishay documentation. | No functional difference; both unidirectional, same electrical specs and thermal ratings. | Select SMBJ75C-E3/52 when matching legacy BOMs specifying "C" suffix; SMBJ75A-E3/52 is interchangeable in new designs. |
| SMCJ75A-E3/57T | Higher power rating (1500 W), larger SMC (DO-214AB) package, same VWM/VBR/VC but higher IPPM (12.3 A); RθJA = 40 °C/W vs 100 °C/W. | Better suited for high-energy surges where board space allows larger footprint and enhanced thermal dissipation. | Choose SMBJ75C-E3/52 for space-constrained layouts requiring SMB footprint; select SMCJ75A-E3/57T only when >600 W surge immunity is required. |
Compared with SMBJ75A-E3/52, the SMBJ75C-E3/52 offers identical protection performance in the same SMB package, while SMCJ75A-E3/57T delivers higher surge capacity at the cost of larger size and different thermal management - making SMBJ75C-E3/52 optimal for compact, cost-sensitive 75 V rail protection.
Availability
SMBJ75C-E3/52 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, and sensor signal conditioning requiring stable component supply, consistent RoHS compliance, and verified surge performance across production lots.
Supply support for SMBJ75C-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, power efficiency, and application-specific ruggedization.
The SMBJ series was developed for surface-mount transient suppression in space-constrained, high-reliability power and interface circuits - targeting industrial, telecom, and automotive subsystems where consistent clamping and thermal stability are critical.
FAQ
What is the maximum clamping voltage of the SMBJ75C-E3/52 under standard test conditions?
The SMBJ75C-E3/52 has a maximum clamping voltage (VC) of 121 V when subjected to a 5.0 A peak pulse current with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream components remain within their absolute maximum ratings.
Is the SMBJ75C-E3/52 suitable for automotive applications?
The SMBJ75C-E3/52 itself is commercial-grade (E3 suffix), not AEC-Q101 qualified. However, Vishay offers the functionally identical SMBJ75CHE3 variant (HE3 suffix) with full AEC-Q101 qualification. For automotive body control modules or infotainment power rails, specify the HE3 version; SMBJ75C-E3/52 remains appropriate for non-automotive industrial and telecom use where AEC-Q101 is not mandated.
How does the SMBJ75C-E3/52 differ from bidirectional TVS diodes like SMBJ75CA?
The SMBJ75C-E3/52 is unidirectional and features a cathode band for polarity identification, allowing it to block reverse current until breakdown occurs - ideal for DC-biased lines. In contrast, SMBJ75CA is bidirectional with no polarity marking and symmetric clamping in both directions, suited for AC-coupled or differential signal lines. Their VWM and VC values differ accordingly: SMBJ75C-E3/52 has VWM = 75 V, while SMBJ75CA has VWM = 64.5 V.
What is the thermal resistance and how does it affect layout design for the SMBJ75C-E3/52?
The SMBJ75C-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This means each watt of average power dissipation raises junction temperature by ~100 °C above ambient - so for sustained operation near TJ(max) = 150 °C, layout must minimize trace resistance and maximize copper area to avoid thermal runaway during repetitive surges.
Does the SMBJ75C-E3/52 meet lead-free soldering requirements?
Yes, the SMBJ75C-E3/52 is RoHS-compliant and rated for lead-free reflow with a maximum peak temperature of 260 °C (MSL Level 1 per J-STD-020). Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability standards, supporting reliable wetting and joint formation in standard SAC305 reflow profiles without voiding or dewetting issues.
SMBJ75C-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 134V
- Current - Peak Pulse (10/1000µs):
- 4.5A
- 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)
SMBJ75C-E3/52 FAQ
1.How can I place an order for SMBJ75C-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ75C-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 SMBJ75C-E3/52 reliable?
The price and inventory of SMBJ75C-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 SMBJ75C-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ75C-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ75C-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ75C-E3/52?
SMBJ75C-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ75C-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 SMBJ75C-E3/52?
For technical support, including SMBJ75C-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ75C-E3/52 requirements.
6.How does Aetrix verify that SMBJ75C-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ75C-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 SMBJ75C-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ75C-E3/52?
All SMBJ75C-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ75C-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 SMBJ75C-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ75C-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ75C-E3/52 Tags
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