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Vishay General Semiconductor - Diodes Division SMBJ7.5CA-M3/52
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- Part No.:
- SMBJ7.5CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.5CA-M3/52.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,909
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Product details
Overview
SMBJ7.5CA-M3/52 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 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1.0 mA test current, and clamps to ≤12.9 V at 46.5 A peak pulse current (IPPM) under 10/1000 µs waveform - protecting MOSFETs, ICs, and sensor interfaces in industrial and telecom systems.
For engineers reviewing the SMBJ7.5CA-M3/52 datasheet, SMBJ7.5CA-M3/52 pinout, SMBJ7.5CA-M3/52 application, or SMBJ7.5CA-M3/52 equivalent, key selection criteria include bidirectional clamping capability, 600 W peak pulse power rating, low clamping ratio (VC/VBR ≈ 1.55), MSL Level 1 moisture sensitivity, and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker testing.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional junction structure, enabling protection of AC-coupled or differential signal lines without polarity constraints. Its glass-passivated silicon junction delivers sub-nanosecond response time and low incremental surge resistance, critical for suppressing ESD and inductive switching spikes before sensitive downstream circuitry is damaged.
The device is rated for 600 W peak pulse power (10/1000 µs), derated linearly above TA = 25 °C with RθJA = 100 °C/W, and supports continuous power dissipation of 5.0 W at TA = 50 °C on infinite heatsink. Junction temperature range spans −55 °C to +150 °C, and it meets UL 497B recognition (QVGQ2) for protector classification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse operating voltage before significant leakage; ensures no conduction during normal signal operation. |
| VBR min/max | 8.33 V / 9.21 V at IT = 1.0 mA - Confirmed breakdown threshold range; defines onset of clamping behavior. |
| VC @ IPPM | ≤12.9 V at 46.5 A - Clamped voltage under 600 W transient; determines maximum stress imposed on protected circuit. |
| IPPM | 46.5 A - Peak surge current survivable with 10/1000 µs waveform; directly tied to 600 W pulse power rating. |
| PPPM | 600 W - Transient energy absorption capacity; validates suitability for lightning surge (IEC 61000-4-5 Level 3) and inductive load switching. |
| TJ max | +150 °C - Maximum junction temperature; enables reliable operation in high-ambient industrial environments. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with automated placement and reflow soldering. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (peak reflow 260 °C). Bidirectional configuration has no polarity marking; terminals are symmetrical anode/cathode pair.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode | Bidirectional terminal pair | Interchangeable connection points; identical electrical behavior in either direction - no cathode band marking required. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validates robustness against IEC 61000-4-5 surge events up to 1 kV/2 Ω open-circuit voltage. |
| Clamping voltage ≤12.9 V at 46.5 A | Ensures protected logic-level ICs (e.g., 3.3 V or 5 V microcontrollers) remain below absolute maximum ratings during transients. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for industrial and automotive supply chains without compromising thermal or electrical performance. |
| MSL Level 1, 260 °C peak reflow | Eliminates pre-bake requirement and supports standard SMT assembly processes without moisture-related popcorning risk. |
| UL 497B recognized (QVGQ2) | Confirms suitability for use in safety-critical telecom and industrial equipment requiring certified surge protection components. |
Applications
| Industrial Motor Control | Automotive Sensor Interface |
|---|---|
|
Use Scenario: Protection of gate drivers and feedback signal lines in variable-frequency drives exposed to inductive kickback from 24 V DC motors. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across motor phase outputs and analog sensor inputs to limit transient overvoltage. Use Value: Prevents latch-up or permanent damage to isolated amplifiers and PWM controllers by limiting voltage excursions to ≤12.9 V during 46.5 A surges. |
Use Scenario: ESD and load-dump protection on LIN bus or analog pressure/temperature sensor lines in engine control modules. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on bidirectional communication or low-voltage analog input paths. Use Value: Maintains signal integrity during ISO 10605 ±30 kV contact discharge events while preserving <1 µA leakage at 7.5 V operating voltage. |
| Telecom Power Feeds | Consumer USB-C Port Protection |
|
Use Scenario: Surge suppression on −48 V DC telecom power distribution boards subject to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Parallel-connected TVS across power rail and return to clamp differential and common-mode surges. Use Value: Absorbs 600 W pulses without degradation, ensuring uninterrupted operation of PoE-powered baseband processors during field-deployed surge events. |
Use Scenario: Overvoltage protection on USB-C CC and VCONN lines susceptible to hot-plug transients and ESD. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF typical) bidirectional clamp integrated into compact port-level protection layout. Use Value: Enables fast response to ±15 kV HBM ESD without signal distortion, leveraging SMB footprint for space-constrained Type-C connector 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 |
|---|---|---|---|
| SMBJ7.5CA-E3/52 | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3). | Preferred for commercial-grade non-automotive applications where halogen content is unrestricted. | Select when halogen-free certification is not mandated and cost optimization is prioritized. |
| SMAJ7.5CA-M3 | Lower 400 W peak pulse power; SMA package (smaller footprint, higher thermal resistance). | Suitable only for lower-energy transients; limited to PCBs with constrained area and moderate ambient temperatures. | Choose only if board space is severely limited and surge threat level is below IEC 61000-4-5 Level 2. |
Compared with SMBJ7.5CA-E3/52, the SMBJ7.5CA-M3/52 adds halogen-free compliance without sacrificing clamping performance or thermal robustness; versus SMAJ7.5CA-M3, it delivers 50 % higher surge power handling and superior thermal dissipation in the larger SMB package - making it the preferred choice for industrial and automotive front-end protection.
Availability
SMBJ7.5CA-M3/52 is available at Aetrix Electronics and suitable for industrial motor control, automotive sensor interface, and telecom power feed applications requiring stable component supply, long-term lifecycle support, and traceable halogen-free sourcing.
Supply support for SMBJ7.5CA-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting industrial automation, automotive electronics, and infrastructure equipment where robustness and regulatory compliance are mandatory.
FAQ
What is the clamping voltage of SMBJ7.5CA-M3/52 at its rated peak pulse current?
The SMBJ7.5CA-M3/52 clamps to a maximum of 12.9 V at its specified peak pulse current of 46.5 A under the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuitry downstream will not experience voltages exceeding this threshold during standardized surge events. The SMBJ7.5CA-M3/52 achieves this with low dynamic impedance, ensuring consistent clamping performance across its operational temperature range.
Is SMBJ7.5CA-M3/52 suitable for automotive applications?
The SMBJ7.5CA-M3/52 is halogen-free and RoHS-compliant but not AEC-Q101 qualified in this specific M3/52 configuration. For automotive use, Vishay offers the HM3-suffixed variant (e.g., SMBJ7.5CAHM3_B/H) which carries AEC-Q101 qualification. Engineers must select the HM3 version - not SMBJ7.5CA-M3/52 - when designing to automotive reliability standards. The SMBJ7.5CA-M3/52 remains appropriate for industrial and telecom applications demanding halogen-free compliance.
How does the bidirectional design of SMBJ7.5CA-M3/52 affect its circuit implementation?
The bidirectional design of SMBJ7.5CA-M3/52 eliminates polarity concerns during placement - it functions identically regardless of orientation across a signal line or power rail. This simplifies layout for AC-coupled interfaces like RS-485, CAN, or LIN buses and avoids errors in high-volume manufacturing. Unlike unidirectional TVS diodes, SMBJ7.5CA-M3/52 requires no cathode band alignment, and its symmetrical V-I curve ensures matched clamping in both voltage polarities - critical for protecting differential signaling paths.
What is the maximum steady-state power dissipation for SMBJ7.5CA-M3/52?
The SMBJ7.5CA-M3/52 has a maximum steady-state power dissipation (PD) of 5.0 W when mounted on an infinite heatsink at ambient temperature TA = 50 °C. At 25 °C, derating begins per Figure 2 in the datasheet, yielding ~5.5 W. This rating governs continuous leakage-based heating under sustained overvoltage conditions - distinct from its 600 W transient capability. Designers must ensure PCB copper area and airflow maintain junction temperature below 150 °C under worst-case bias conditions.
Does SMBJ7.5CA-M3/52 meet UL safety certification requirements?
Yes, SMBJ7.5CA-M3/52 is Underwriters Laboratories (UL) recognized under standard UL 497B for protectors, with file number E136766. This certification covers both unidirectional and bidirectional configurations and confirms compliance for use in telecommunications and industrial equipment requiring third-party safety validation. The UL mark applies to the entire SMBJ family, including SMBJ7.5CA-M3/52, and supports system-level safety approvals without additional component-level testing.
SMBJ7.5CA-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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 46.5A
- 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)
SMBJ7.5CA-M3/52 FAQ
1.How can I place an order for SMBJ7.5CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.5CA-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 SMBJ7.5CA-M3/52 reliable?
The price and inventory of SMBJ7.5CA-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 SMBJ7.5CA-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ7.5CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.5CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.5CA-M3/52?
SMBJ7.5CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.5CA-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 SMBJ7.5CA-M3/52?
For technical support, including SMBJ7.5CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.5CA-M3/52 requirements.
6.How does Aetrix verify that SMBJ7.5CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ7.5CA-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 SMBJ7.5CA-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ7.5CA-M3/52?
All SMBJ7.5CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.5CA-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 SMBJ7.5CA-M3/52 part is unused and in its original packaging.
Return procedure for SMBJ7.5CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.5CA-M3/52 Tags
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