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Vishay General Semiconductor - Diodes Division SMBJ48CD-M3/H
- Part No.:
- SMBJ48CD-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ48CD-M3/H.pdf
- Description:
- TVS DIODE 48VWM 76.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,838
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Product details
Overview
SMBJ48CD-M3/H 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 48 V stand-off voltage (VWM), 54.1–58.1 V breakdown voltage (VBR) at 1 mA, 76.3 V maximum clamping voltage (VC) at 7.9 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.
For engineers reviewing the SMBJ48CD-M3/H datasheet, SMBJ48CD-M3/H pinout, SMBJ48CD-M3/H application, or SMBJ48CD-M3/H equivalent, key selection criteria include bidirectional polarity, ±3.5% VBR tolerance, low leakage (<0.5 μA at VWM), MSL Level 1 moisture sensitivity, and halogen-free RoHS-compliant construction suitable for automated SMT assembly.
Technical Context
This TVS diode operates symmetrically in both directions, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its silicon avalanche structure delivers sub-nanosecond response time and low incremental surge resistance, ensuring effective suppression of ESD, lightning-induced surges, and inductive switching transients.
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 | 48 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 54.1 V / 58.1 V at 1 mA - Tight ±3.5% tolerance ensures predictable turn-on across production lots |
| VC @ IPPM | 76.3 V at 7.9 A - Clamping voltage during 10/1000 μs surge defines worst-case stress on downstream ICs |
| PPPM | 600 W - Peak pulse power handling capability per standard 10/1000 μs waveform |
| 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 JEDEC MS-012AC |
Pinout & Package
Two-terminal bidirectional device in SMB (DO-214AA) package; no polarity marking required. Matte tin-plated leads meet J-STD-002 solderability and JESD22-B102 thermal shock requirements. M3 suffix denotes halogen-free, RoHS-compliant, industrial-grade construction with JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; clamps voltage excursions above |VWM| in either direction |
| Case (cathode band absent) | Thermal and mechanical interface | No cathode band indicates bidirectional configuration; case serves as thermal path to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| ±3.5 % VBR tolerance | Enables precise overvoltage threshold control without design margin inflation |
| 600 W peak pulse power (10/1000 μs) | Supports robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth) |
| MSL Level 1 (260 °C peak reflow) | Allows single-pass lead-free reflow without preconditioning or dry-pack requirements |
| UL 497B recognized (QVGQ2) | Validates suitability for telecom and industrial signal-line protection per safety standards |
| Low ID < 0.5 μA at VWM | Minimizes loading on high-impedance sensor outputs and precision reference lines |
Applications
| Industrial Sensor Interface Protection | Telecom Line Card Surge Suppression |
|---|---|
Use Scenario: Protecting 4–20 mA current-loop transmitters and analog sensor inputs from field-induced transients in factory automation systems. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential input pins or between signal and ground. Use Value: Limits transient voltage to ≤76.3 V, preventing damage to precision op-amps and ADC front-ends while maintaining <0.5 μA leakage at 48 V nominal bias. | Use Scenario: Safeguarding Ethernet PHY interfaces and POTS line drivers against lightning-induced surges in central office equipment. IC Role / Device Role / Timing Role: Primary-level TVS on balanced twisted-pair lines, mounted directly at connector entry point. Use Value: Absorbs 600 W surge energy within 1 ns response time, meeting GR-1089-CORE Level 3 requirements without degrading signal integrity at 100 MHz. |
| Automotive Body Control Module I/O | Consumer Appliance Motor Drive Feedback Protection |
Use Scenario: Shielding LIN bus transceivers and switch inputs from load-dump and jump-start events in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Secondary protection stage after primary fuse, placed adjacent to protected IC pins. Use Value: Withstands 150 °C junction temperature and maintains stable VBR across automotive temperature range (−40 °C to +125 °C ambient). | Use Scenario: Guarding hall-effect rotor position sensors and current-sense amplifiers in BLDC motor controllers inside washing machines and HVAC units. IC Role / Device Role / Timing Role: Low-capacitance transient clamp on low-voltage analog feedback paths. Use Value: Delivers 76.3 V clamping at 7.9 A with negligible capacitance impact, preserving bandwidth of <1 MHz feedback signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ48CA-E3/52 (Vishay) | Same VWM/VBR/VC specs; differs in packaging (tape-and-reel vs. bulk) and MSL rating (Level 1 vs. unspecified) | No functional difference in circuit protection performance; identical electrical behavior and SMB footprint | Select SMBJ48CD-M3/H for guaranteed halogen-free, RoHS-compliant, and JESD201 Class 2 whisker-tested supply chain traceability |
| P6SMB48CA (ON Semiconductor) | Identical VWM (48 V), VBR (54–58 V), VC (76.3 V); same SMB package but rated for 600 W, 10/1000 μs | Approved for automotive AEC-Q200 Grade 2 (−40 °C to +105 °C), whereas SMBJ48CD-M3/H is industrial-grade (−55 °C to +150 °C) | Choose P6SMB48CA when AEC-Q200 qualification is mandatory; otherwise SMBJ48CD-M3/H offers broader temperature range and tighter VBR tolerance |
Compared with SMBJ48CA-E3/52, SMBJ48CD-M3/H provides documented halogen-free compliance and whisker resistance certification; versus P6SMB48CA, it trades AEC-Q200 qualification for extended junction temperature range and tighter ±3.5% VBR tolerance-critical for precision clamping in industrial control loops.
Availability
SMBJ48CD-M3/H is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line cards, automotive body control modules, and consumer appliance motor drive feedback circuits requiring stable component supply and full traceability.
Supply support for SMBJ48CD-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, TVS devices, and optoelectronics with emphasis on reliability, power efficiency, and industrial-grade qualification.
The SMBJ series was engineered specifically for high-energy transient suppression in harsh environments-targeting industrial automation, telecom infrastructure, and automotive subsystems where consistent clamping performance and long-term stability are critical.
FAQ
What is the polarity configuration of SMBJ48CD-M3/H?
SMBJ48CD-M3/H is a bidirectional TVS diode, meaning it provides symmetrical clamping in both forward and reverse directions. Unlike unidirectional variants (e.g., SMBJ48D), it has no cathode band marking and is intended for AC-coupled or differential signal protection where polarity reversal may occur during transients.
Does SMBJ48CD-M3/H meet UL safety certification?
Yes, SMBJ48CD-M3/H is UL Recognized under file E136766 for both unidirectional and bidirectional configurations, complying with UL 497B for signal-line protectors. This certification validates its use in telecom, industrial, and building automation equipment requiring third-party safety approval.
What is the maximum clamping voltage of SMBJ48CD-M3/H at rated surge current?
The maximum clamping voltage (VC) of SMBJ48CD-M3/H is 76.3 V at 7.9 A peak pulse current (IPPM), measured using the standard 10/1000 μs double-exponential waveform. This value defines the upper voltage limit imposed on protected circuitry during a full-rated surge event.
Is SMBJ48CD-M3/H compatible with lead-free reflow processes?
Yes, SMBJ48CD-M3/H is rated MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C, making it fully compatible with standard lead-free (SnAgCu) soldering profiles without preconditioning or dry-pack requirements.
How does the M3 suffix affect SMBJ48CD-M3/H specifications?
The M3 suffix on SMBJ48CD-M3/H indicates halogen-free, RoHS-compliant construction with matte tin-plated leads that pass JESD201 Class 2 whisker testing. It does not alter electrical parameters but ensures compliance with environmental regulations and long-term interconnect reliability in high-vibration or high-humidity applications.
SMBJ48CD-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):
- 48V
- Voltage - Breakdown (Min):
- 54.1V
- Voltage - Clamping (Max) @ Ipp:
- 76.3V
- Current - Peak Pulse (10/1000µs):
- 7.9A
- 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)
SMBJ48CD-M3/H FAQ
1.How can I place an order for SMBJ48CD-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ48CD-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 SMBJ48CD-M3/H reliable?
The price and inventory of SMBJ48CD-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 SMBJ48CD-M3/H is usually 5 days.
3.What payment methods are accepted for SMBJ48CD-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ48CD-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ48CD-M3/H?
SMBJ48CD-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ48CD-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 SMBJ48CD-M3/H?
For technical support, including SMBJ48CD-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ48CD-M3/H requirements.
6.How does Aetrix verify that SMBJ48CD-M3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ48CD-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 SMBJ48CD-M3/H meets industry standards.
7.What is the process for return or replacement of SMBJ48CD-M3/H?
All SMBJ48CD-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ48CD-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 SMBJ48CD-M3/H part is unused and in its original packaging.
Return procedure for SMBJ48CD-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ48CD-M3/H Tags
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