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Vishay General Semiconductor - Diodes Division SMBJ75CA-E3/52
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- Part No.:
- SMBJ75CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ75CA-E3/52.pdf
- Description:
- TVS DIODE 75VWM 121VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,408
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Product details
Overview
SMBJ75CA-E3/52 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 signal or power lines. It features a 75 V standoff voltage (VWM), 83.3–92.1 V breakdown range (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 - deployed in industrial sensor interfaces and telecom line protection.
For engineers reviewing the SMBJ75CA-E3/52 datasheet, SMBJ75CA-E3/52 pinout, SMBJ75CA-E3/52 application, or SMBJ75CA-E3/52 equivalent, key selection criteria include bidirectional clamping capability, low leakage (<1.0 µA at VWM), MSL Level 1 moisture sensitivity, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on PCBs requiring robust ESD and surge immunity.
Technical Context
This TVS diode operates symmetrically in both directions, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1.0 ns), while the low incremental surge resistance supports effective energy diversion during transient events.
The device is rated for repetitive 10/1000 µs surges at 0.01% duty cycle and derates linearly above 25 °C ambient, with thermal resistance RθJA = 100 °C/W and maximum junction temperature of +150 °C. It meets UL 497B recognition (QVGQ2) and is qualified to J-STD-020 MSL Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (min/max) | 83.3 V / 92.1 V at 1.0 mA - Confirmed bidirectional breakdown threshold; ensures predictable turn-on across manufacturing lot. |
| VC @ IPPM | 121 V at 5.0 A - Clamped voltage under 10/1000 µs surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 600 W - Peak pulse power handling per 10/1000 µs waveform; validates suitability for IEC 61000-4-5 Level 3/4 surge events. |
| ID @ VWM | <1.0 µA - Reverse leakage at standoff voltage; critical for low-power sensor or battery-backed circuits. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in high-ambient industrial environments with proper PCB copper area. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with JEDEC MS-012. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Bidirectional construction means no polarity marking; terminals are symmetrical anode/cathode pairs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient conduction path | Either terminal serves as anode or cathode depending on instantaneous polarity; enables AC line or differential pair protection without orientation constraints. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validated energy absorption capacity for IEC 61000-4-5 surge immunity up to 1 kV open-circuit / 0.5 kV source impedance. |
| Low clamping voltage (121 V @ 5 A) | Minimizes overvoltage exposure to protected ICs such as RS-485 transceivers or microcontroller I/O pins. |
| MSL Level 1 (260 °C peak reflow) | Enables single-pass lead-free reflow assembly without preconditioning or baking; reduces manufacturing complexity. |
| Glass passivated junction | Ensures long-term stability of VBR and low parameter drift over temperature and lifetime. |
| UL 497B recognized (QVGQ2) | Confirms compliance for telecom and industrial signal-line protection applications requiring third-party safety certification. |
Applications
| Industrial Sensor Interface | Telecom Line Protection |
|---|---|
|
Use Scenario: Protecting analog output lines (e.g., 4–20 mA current loops) in factory automation sensors exposed to inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between signal line and ground to shunt ESD and surge energy away from precision DAC or op-amp circuitry. Use Value: Prevents latch-up or permanent damage to 24 V-powered sensor front-ends during field wiring faults or nearby relay coil de-energization. |
Use Scenario: Shielding RS-485/RS-422 data lines in base station backhaul equipment from lightning-induced surges on outdoor cable runs. IC Role / Device Role / Timing Role: Differential-mode TVS mounted across A/B bus lines to suppress common-mode transients exceeding ±1 kV. Use Value: Maintains data integrity by limiting bus voltage excursion to <121 V during 10/1000 µs surges, preserving receiver input stage reliability. |
| Automotive Body Control Module | Consumer Appliance Motor Drive |
|
Use Scenario: Safeguarding LIN bus communication lines in door module ECUs subjected to load dump and ISO 7637-2 pulse 1/2a transients. IC Role / Device Role / Timing Role: Bidirectional transient suppressor connected between LIN line and chassis ground to clamp negative-going spikes and positive overshoots. Use Value: Enables AEC-Q101-compliant design using SMBJ75CA-E3/52HE3 variant, meeting automotive EMC requirements without additional filtering. |
Use Scenario: Protecting microcontroller GPIOs driving brushed DC motor H-bridges in smart home appliances subject to commutation spikes. IC Role / Device Role / Timing Role: Local TVS at motor driver IC inputs to absorb inductive kickback from flyback diodes and prevent false triggering. Use Value: Eliminates need for external RC snubbers by clamping transients within 1 ns, reducing BOM count and board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ75CA | Same SMB package, identical VWM/VC, but lower PPPM (400 W) and higher VBR tolerance (±10% vs. ±5.5%). | Less suitable for IEC 61000-4-5 Level 4; acceptable for consumer-grade surge where 600 W headroom is not required. | Select when cost sensitivity outweighs peak surge margin, and UL recognition is not mandatory. |
| ON Semiconductor SMCJ75CA | Same electrical specs and SMB package, but rated for 1500 W PPPM (with larger SMC package); SMCJ75CA is physically incompatible due to DO-214AB outline. | Not a drop-in replacement - requires PCB redesign; used where higher energy handling justifies larger footprint. | Choose only if system-level surge testing exceeds 600 W and board layout allows SMC (DO-214AB) footprint. |
Compared with SMAJ75CA and SMCJ75CA, SMBJ75CA-E3/52 delivers optimal balance of 600 W surge capacity, SMB footprint compatibility, UL 497B recognition, and MSL Level 1 process readiness - making it the preferred choice for space-constrained industrial and telecom designs requiring certified, production-ready TVS protection.
Availability
SMBJ75CA-E3/52 is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line protection, automotive body control modules, and consumer appliance motor drive circuits requiring stable component supply and full traceability.
Supply support for SMBJ75CA-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-reliability transient suppression in harsh environments - targeting industrial automation, telecom infrastructure, and automotive subsystems where consistent clamping performance and safety certification are mandatory.
FAQ
What is the clamping voltage of SMBJ75CA-E3/52 under a 10/1000 µs surge?
The SMBJ75CA-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 standard test conditions defined in ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 09-Jan-2024. The SMBJ75CA-E3/52 maintains this clamping performance bidirectionally, ensuring consistent protection regardless of transient polarity.
Is SMBJ75CA-E3/52 RoHS-compliant and halogen-free?
Yes, SMBJ75CA-E3/52 is RoHS-compliant (per EU Directive 2011/65/EU) and carries the "E3" suffix indicating commercial-grade, lead-free, and halogen-free construction. The molding compound meets UL 94 V-0 flammability rating, and terminals are matte tin plated per J-STD-002. It does not contain brominated flame retardants or chlorine-based additives, satisfying strict environmental compliance requirements for global electronics manufacturing.
Does SMBJ75CA-E3/52 have AEC-Q101 qualification?
The base SMBJ75CA-E3/52 is not AEC-Q101 qualified; however, the automotive-grade variant SMBJ75CAHE3_B/H is explicitly qualified per AEC-Q101. That version uses the same die and SMB package but undergoes additional stress testing including temperature cycling, HTGB, and ESD. For non-automotive applications, SMBJ75CA-E3/52 remains fully suitable - its electrical specs, thermal performance, and reliability are identical except for the qualification documentation and traceability chain.
What is the maximum leakage current of SMBJ75CA-E3/52 at its standoff voltage?
The SMBJ75CA-E3/52 exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 75 V standoff voltage (VWM), measured at 25 °C ambient. This low leakage ensures minimal power loss in always-on sensor or battery-operated systems. The value is guaranteed across the full operating temperature range (−55 °C to +150 °C), with typical leakage remaining well below 0.5 µA at room temperature - a key advantage over higher-leakage alternatives like P6KE series.
Can SMBJ75CA-E3/52 be used in bidirectional AC signal paths?
Yes, SMBJ75CA-E3/52 is specifically designed for bidirectional operation, as indicated by the "CA" suffix. Its symmetrical VBR and VC characteristics apply equally in both polarities, making it ideal for protecting AC-coupled interfaces such as Ethernet PHYs, audio lines, or differential bus standards (e.g., RS-485). Unlike unidirectional variants, SMBJ75CA-E3/52 requires no polarity alignment during placement - simplifying layout and eliminating risk of reverse installation.
SMBJ75CA-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:
- 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-E3/52 FAQ
1.How can I place an order for SMBJ75CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ75CA-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 SMBJ75CA-E3/52 reliable?
The price and inventory of SMBJ75CA-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 SMBJ75CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ75CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ75CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ75CA-E3/52?
SMBJ75CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ75CA-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 SMBJ75CA-E3/52?
For technical support, including SMBJ75CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ75CA-E3/52 requirements.
6.How does Aetrix verify that SMBJ75CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ75CA-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 SMBJ75CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ75CA-E3/52?
All SMBJ75CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ75CA-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 SMBJ75CA-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ75CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ75CA-E3/52 Tags
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