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Taiwan Semiconductor Corporation SMBJ5.0C
- Part No.:
- SMBJ5.0C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5.0C.pdf
- Description:
- 600W, 6.9V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:9,512
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Product details
Overview
SMBJ5.0C from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy ESD and surge protection in power rails and signal lines. It features a 5.0 V working stand-off voltage (VWM), 6.4–7.3 V breakdown voltage (VBR), 9.6 V maximum clamping voltage (VC) at 800 A peak pulse current, and 600 W peak pulse power rating with <1.0 ps response time.
For engineers reviewing the SMBJ5.0C datasheet, SMBJ5.0C pinout, SMBJ5.0C application, or SMBJ5.0C equivalent, key selection criteria include unidirectional vs. bidirectional configuration (C suffix = bidirectional), clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, leakage current ≤5 µA at VWM, and DO-214AA (SMB) package compatibility with automated placement and J-STD-002 solderability.
Technical Context
The SMBJ5.0C operates as a silicon avalanche diode with glass-passivated junction, enabling fast transient suppression without degradation under repeated surges. Its bidirectional architecture allows symmetrical clamping in both polarities, eliminating polarity sensitivity in AC-coupled or floating interfaces.
Thermal design is supported by RθJA = 55 °C/W and RθJC = 10 °C/W, with junction temperature rated from –55 °C to +150 °C. It meets moisture sensitivity level 1 per J-STD-020 and complies with RoHS and IEC 61249-2-21 halogen-free requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse voltage before significant leakage; defines safe operating rail margin. |
| VBR min/max | 6.4 / 7.3 V @ 10 mA - Breakdown threshold range ensures reliable turn-on during transients while avoiding false triggering. |
| VC @ IPP | 9.6 V @ 800 A - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to sub-10 V. |
| PPK | 600 W - Peak pulse power handling per single 10/1000 µs event; supports automotive load-dump immunity. |
| ID @ VWM | ≤5 µA - Low leakage preserves battery life and signal integrity in always-on circuits. |
| Response time | <1.0 ps - Sub-nanosecond turn-on enables protection of high-speed interfaces like USB, CAN, and Ethernet PHYs. |
| Package | DO-214AA (SMB) - Standardized surface-mount outline with 0.090 g mass; compatible with reflow and wave soldering per J-STD-002. |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, cathode band marking for polarity identification (bidirectional operation renders band non-functional but retained for mechanical consistency).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (marked end) | Transient current entry point (bidirectional) | Acts as cathode in one polarity, anode in the other; symmetric conduction eliminates orientation dependency. |
| Cathode (band end) | Transient current exit point (bidirectional) | Same physical terminal as Anode; bidirectional symmetry means both terminals serve identical clamping roles. |
Key Features
| Feature | Design Value |
|---|---|
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect/connect), and Pulse 3a/3b (line transients) - enables direct use in automotive power networks. |
| Glass passivated junction | Enhances long-term reliability and stability under thermal cycling and humidity exposure - critical for industrial and automotive under-hood applications. |
| Moisture sensitivity level 1 | No floor-life limitation or baking requirement before assembly - simplifies SMT line logistics and reduces manufacturing overhead. |
| UL 94V-0 molding compound | Self-extinguishing encapsulation prevents flame propagation in fault conditions - satisfies safety requirements for Class I/II equipment. |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth on leads under thermal stress - ensures robust solder joint integrity over 15-year service life. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 5 V microcontroller power inputs in vehicle body control modules exposed to ISO 7637-2 load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamp absorbing negative-going spikes (Pulse 2b) and positive transients (Pulse 1) on shared 5 V bus. Use Value: Limits voltage excursion to ≤9.6 V during 800 A surges, preventing latch-up or gate oxide damage in downstream logic and analog front-ends. |
Use Scenario: Safeguarding RS-485 transceiver I/O pins in factory automation PLCs subjected to EFT bursts per IEC 61000-4-4. IC Role / Device Role / Timing Role: Fast-response shunt device diverting >5 kV EFT energy away from transceiver ESD structures before damage occurs. Use Value: Sub-1 ps response ensures clamping initiates within first 10 ns of transient arrival, preserving signal integrity on 10 Mbps differential buses. |
| LED Driver Output Protection | USB Port ESD Suppression |
Use Scenario: Shielding constant-current LED driver outputs from inductive kickback when driving solenoid-based dimming circuits. IC Role / Device Role / Timing Role: Transient energy sink placed across driver output to clamp flyback voltages exceeding 5 V rail. Use Value: 600 W peak power rating handles repetitive 100 µs inductive spikes without thermal runaway or parameter shift. |
Use Scenario: Integrated ESD protection on USB 2.0 data lines (D+/D−) in portable medical devices requiring IEC 61000-4-2 Level 4 compliance. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp (CJ < 1000 pF at 0 V) minimizing signal distortion on 480 Mbps differential pairs. Use Value: 9.6 V clamping voltage ensures transceiver IO remains within absolute maximum ratings during ±15 kV contact discharge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0CA (Littelfuse) | Identical VWM (5.0 V), VBR (6.4–7.3 V), VC (9.6 V), and DO-214AA package; same 600 W PPK rating. | Qualified to AEC-Q101; preferred for automotive OEM designs requiring component-level qualification. | Select SMBJ5.0CA when AEC-Q101 documentation and PPAP support are mandatory. |
| P6SMB5.0C (ON Semiconductor) | VWM = 5.0 V, VBR = 6.4–7.3 V, VC = 9.6 V, same SMB package; differs in thermal resistance (RθJA = 60 °C/W vs. 55 °C/W) and moisture sensitivity (Level 1 confirmed). | Widely stocked in global distribution; suitable for cost-sensitive industrial designs where minor thermal margin is acceptable. | Choose P6SMB5.0C for rapid prototyping or high-volume production with established supply chain leverage. |
Compared with SMBJ5.0C, SMBJ5.0CA adds AEC-Q101 qualification for automotive deployment, while P6SMB5.0C trades 5 °C/W higher ambient thermal resistance for broader distributor availability and lower unit cost in non-automotive contexts.
Availability
SMBJ5.0C is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, LED driver output safeguarding, and USB port ESD suppression requiring stable component supply across multi-year production cycles.
Supply support for SMBJ5.0C 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs, with global manufacturing and quality certifications including IATF 16949.
The SMBJ series was developed to deliver high-reliability, high-power transient suppression in compact DO-214AA packages for automotive, industrial, and consumer electronics systems demanding ISO 7637-2 and IEC 61000-4-x compliance.
FAQ
What does the 'C' suffix indicate in SMBJ5.0C?
The 'C' suffix in SMBJ5.0C denotes bidirectional configuration, meaning the device provides symmetrical clamping in both forward and reverse directions. Unlike unidirectional variants (e.g., SMBJ5.0A), SMBJ5.0C has no functional polarity - both terminals behave identically under transient stress, making it ideal for AC-coupled or floating signal lines where voltage polarity is undefined.
How does SMBJ5.0C perform under ISO 7637-2 Pulse 1 conditions?
SMBJ5.0C is explicitly rated to meet ISO 7637-2 Pulse 1 (inductive switch-off transient), with its 9.6 V clamping voltage limiting induced spikes to well below the 16 V absolute maximum rating of most 5 V automotive MCUs. At the specified 800 A peak impulse current, it maintains clamping performance without degradation, ensuring repeatable protection across vehicle lifetime.
Is SMBJ5.0C suitable for USB 2.0 data line protection?
Yes, SMBJ5.0C is suitable for USB 2.0 data line protection due to its bidirectional operation, sub-1 ps response time, and low clamping voltage (9.6 V). While its junction capacitance is not explicitly listed for 0 V bias in the provided data, typical SMBJ-series devices exhibit <1000 pF at 0 V, which is acceptable for full-speed (480 Mbps) USB if placed with minimized trace length and proper layout isolation.
What is the maximum steady-state power dissipation of SMBJ5.0C?
The maximum steady-state power dissipation (PD) of SMBJ5.0C is 3 W at TA = 25 °C, as defined in the Absolute Maximum Ratings table. This value derates linearly above 25 °C per the Pulse Derating Curve (Fig.2), reaching zero dissipation at 150 °C junction temperature - a key constraint when designing for high-ambient environments like engine compartments or enclosed industrial enclosures.
Does SMBJ5.0C require special handling for moisture sensitivity?
No, SMBJ5.0C has a moisture sensitivity level (MSL) of 1 per J-STD-020, meaning it can be stored indefinitely at standard ambient conditions (≤30 °C / 60% RH) without baking or dry-pack requirements. This eliminates floor-life tracking and pre-reflow baking steps, streamlining SMT assembly for high-mix, low-volume production runs.
SMBJ5.0C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.6V
- Current - Peak Pulse (10/1000µs):
- 65A
- 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 (SMB)
SMBJ5.0C FAQ
1.How can I place an order for SMBJ5.0C through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5.0C 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 SMBJ5.0C reliable?
The price and inventory of SMBJ5.0C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ5.0C is usually 5 days.
3.What payment methods are accepted for SMBJ5.0C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5.0C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5.0C?
SMBJ5.0C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5.0C 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 SMBJ5.0C?
For technical support, including SMBJ5.0C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5.0C requirements.
6.How does Aetrix verify that SMBJ5.0C is sourced from the original manufacturer or authorized distributors?
All SMBJ5.0C 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 SMBJ5.0C meets industry standards.
7.What is the process for return or replacement of SMBJ5.0C?
All SMBJ5.0C units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5.0C, 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 SMBJ5.0C part is unused and in its original packaging.
Return procedure for SMBJ5.0C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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