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Vishay General Semiconductor - Diodes Division SMBJ5.0A-M3/5B
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- Part No.:
- SMBJ5.0A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5.0A-M3/5B.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,561
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Product details
Overview
SMBJ5.0A-M3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping fast-rising ESD and surge transients on 5.0 V DC power rails and signal lines. It delivers 600 W peak pulse power (10/1000 µs), clamps at ≤9.2 V under 65.2 A surge, and exhibits ≤800 µA reverse leakage at 5.0 V standoff - used in USB port protection, industrial sensor I/O, and automotive body control modules.
For engineers reviewing the SMBJ5.0A-M3/5B datasheet, SMBJ5.0A-M3/5B pinout, SMBJ5.0A-M3/5B application, or SMBJ5.0A-M3/5B equivalent, key selection criteria include clamping voltage at rated IPPM, VWM tolerance margin vs. system rail, thermal resistance (RθJA = 100 °C/W), unidirectional polarity marking, and halogen-free RoHS compliance per M3 suffix.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse-biased voltage exceeds its breakdown threshold (6.4–7.07 V at 10 mA), it avalanches to divert surge current away from downstream ICs. Its glass-passivated junction ensures stable breakdown and low leakage over temperature.
Designed for automated SMT assembly on standard PCB pads (0.2" × 0.2"), it meets J-STD-020 MSL Level 1 (peak reflow 260 °C) and supports repetitive surge duty cycles up to 0.01 % with full derating above 25 °C ambient per Fig. 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - maximum continuous reverse operating voltage; must exceed system nominal rail (e.g., 5 V ±5 %) to avoid leakage-induced power loss |
| VBR min/max | 6.40 V / 7.07 V at IT = 10 mA - guaranteed avalanche onset window; defines minimum overvoltage margin before clamping activates |
| VC @ IPPM | 9.2 V at 65.2 A - clamped voltage during 600 W surge; determines maximum stress imposed on protected IC's absolute maximum rating |
| PPPM | 600 W (10/1000 µs waveform) - peak transient energy handling capacity; validates robustness against IEC 61000-4-5 Level 4 surges |
| ID @ VWM | ≤800 µA - reverse leakage at 5.0 V; low enough to prevent measurable loading on 5 V logic or analog supply rails |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance on minimal copper pad; requires thermal relief design for sustained >1 W dissipation |
| Polarity | Unidirectional - cathode marked by band; blocks forward conduction, clamps only reverse transients - suitable for DC supply line protection |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant (M3 suffix), matte tin-plated leads solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge return path | Connected to protected line (e.g., 5 V rail); avalanche conduction occurs from anode to cathode during overvoltage |
| Anode | Reference node | Typically tied to GND or lower-potential rail; establishes clamping reference and completes surge current path |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Validates immunity to IEC 61000-4-5 4 kV surge (line-earth) and ISO 7637-2 Pulse 1/2a in automotive 12 V systems |
| Clamping voltage ≤9.2 V | Ensures protected 5 V logic ICs (e.g., microcontrollers, UART transceivers) remain within absolute maximum ratings during surge events |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients (<1 ns rise time), improving protection fidelity for high-speed interfaces |
| MSL Level 1 rating | Enables single-pass reflow without moisture sensitivity concerns - eliminates baking requirement in high-volume SMT lines |
| Halogen-free (M3) | Meets IPC-4101D/21G and EU Directive 2011/65/EU Annex II updates; supports green manufacturing and end-of-life recycling |
Applications
| USB 2.0 Data Line Protection | Automotive Body Control Module (BCM) Power Input |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports against ESD (IEC 61000-4-2 ±15 kV contact) and cable discharge events. IC Role / Device Role: Unidirectional shunt clamp placed between data line and ground, with series impedance limiting peak current. Use Value: Clamps transients to ≤9.2 V while maintaining <1 pF junction capacitance (per Fig. 4), preserving signal integrity up to 480 Mbps. |
Use Scenario: Safeguarding 5 V microcontroller supply input in BCM against load dump spikes and alternator ripple. IC Role / Device Role: Primary overvoltage clamp on main 5 V rail, coordinated with upstream fuse and LC filter. Use Value: Absorbs 600 W surges without degradation, enabling compliance with ISO 7637-2 Pulse 5a (75 V/350 ms) when combined with TVS array staging. |
| Industrial Sensor Signal Conditioning | Smart Home Hub 5 V Power Rail |
Use Scenario: Shielding analog output (0–5 V) and digital I²C lines of pressure/temperature sensors from field-induced transients in factory automation. IC Role / Device Role: Point-of-load TVS on sensor module PCB, mounted directly at connector entry point. Use Value: 800 µA max leakage avoids offset error in 12-bit ADC front-ends; 100 °C/W RθJA allows operation at 85 °C ambient with minimal copper area. |
Use Scenario: Securing 5 V DC input of Wi-Fi/Zigbee hub against AC adapter surge and lightning-induced coupling in residential wiring. IC Role / Device Role: Final-stage transient suppressor after primary AC-DC converter and bulk capacitor. Use Value: Halogen-free M3 construction satisfies UL 94 V-0 and RoHS requirements for consumer CE marking; SMB footprint enables compact layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0A-E3/5B | Same electrical specs, but RoHS-compliant commercial grade (E3) instead of halogen-free (M3); identical SMB package and marking. | No difference in circuit function or layout; differs only in material compliance documentation and whisker test class (both meet JESD 201 Class 2). | Select E3 for cost-sensitive non-automotive commercial designs where halogen-free certification is not mandated. |
| SMAJ5.0A-M3 | Lower peak pulse power (400 W vs. 600 W); same VWM/VBR/VC; SMA (DO-214AC) package - 2.5 mm shorter and 0.3 mm narrower than SMB. | Insufficient for IEC 61000-4-5 Level 4; acceptable for ESD-only (IEC 61000-4-2) or low-energy industrial transients. | Choose SMAJ5.0A-M3 only if board space is constrained and surge threat level is limited to ±8 kV ESD - not for mains-coupled surges. |
Compared with SMBJ5.0A-E3/5B, the M3 variant adds halogen-free compliance without performance trade-offs; versus SMAJ5.0A-M3, SMBJ5.0A-M3/5B provides 50 % higher surge energy handling and superior thermal dissipation due to larger SMB footprint - critical for sustained transient environments.
Availability
SMBJ5.0A-M3/5B is available at Aetrix Electronics and suitable for USB interface protection, automotive BCM power inputs, and industrial sensor signal conditioning requiring stable component supply across production lifecycles.
Supply support for SMBJ5.0A-M3/5B 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 automotive qualification.
The SMBJ series targets high-energy transient suppression in space-constrained applications, with design focus on industrial automation, automotive electronics, and consumer power interfaces demanding AEC-Q101 readiness and robust surge immunity.
FAQ
What is the maximum clamping voltage of SMBJ5.0A-M3/5B under rated surge conditions?
The SMBJ5.0A-M3/5B clamps to a maximum of 9.2 V when subjected to its rated peak pulse current of 65.2 A (10/1000 µs waveform). This value is measured per Figure 1 in Vishay document 88392 and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The SMBJ5.0A-M3/5B maintains this clamping performance across its specified operating temperature range of –55 °C to +150 °C.
Does SMBJ5.0A-M3/5B meet automotive qualification standards?
The base SMBJ5.0A-M3/5B is commercial-grade and not AEC-Q101 qualified; however, Vishay offers the automotive variant SMBJ5.0AHM3_B/I with identical electrical specs and halogen-free construction, fully qualified to AEC-Q101. The SMBJ5.0A-M3/5B itself is suitable for non-safety-critical automotive applications where qualification is not mandated, such as infotainment USB ports or lighting control modules.
How does the M3 suffix affect the environmental compliance of SMBJ5.0A-M3/5B?
The M3 suffix on SMBJ5.0A-M3/5B indicates halogen-free, RoHS-compliant construction per IPC-4101D/21G and EU Directive 2011/65/EU Annex II, with brominated flame retardants replaced by alternative chemistries. It also meets JESD 201 Class 2 whisker resistance and UL 94 V-0 flammability. This distinguishes it from the E3 suffix, which is RoHS-compliant but not halogen-free.
Can SMBJ5.0A-M3/5B be used in bidirectional signal line protection?
No - SMBJ5.0A-M3/5B is strictly unidirectional, with polarity indicated by a cathode band. For bidirectional protection (e.g., RS-485, CAN, or AC-coupled signals), the bidirectional variant SMBJ5.0CA-M3 must be used. Using SMBJ5.0A-M3/5B on bidirectional lines risks forward conduction during negative half-cycles, potentially damaging the device or distorting signals.
What is the thermal resistance and how does it impact PCB layout for SMBJ5.0A-M3/5B?
The SMBJ5.0A-M3/5B 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. To maintain safe junction temperatures under repeated surges, designers must allocate adequate copper area and avoid excessive trace length; doubling pad size reduces RθJA by ~20–25 %, directly extending surge endurance per Fig. 2 derating curves.
SMBJ5.0A-M3/5B 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 65.2A
- 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)
SMBJ5.0A-M3/5B FAQ
1.How can I place an order for SMBJ5.0A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5.0A-M3/5B 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 SMBJ5.0A-M3/5B reliable?
The price and inventory of SMBJ5.0A-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ5.0A-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ5.0A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5.0A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5.0A-M3/5B?
SMBJ5.0A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5.0A-M3/5B 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 SMBJ5.0A-M3/5B?
For technical support, including SMBJ5.0A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5.0A-M3/5B requirements.
6.How does Aetrix verify that SMBJ5.0A-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ5.0A-M3/5B 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 SMBJ5.0A-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ5.0A-M3/5B?
All SMBJ5.0A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5.0A-M3/5B, 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 SMBJ5.0A-M3/5B part is unused and in its original packaging.
Return procedure for SMBJ5.0A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ5.0A-M3/5B Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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