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Taiwan Semiconductor Corporation SMBJ6V5CA
- Part No.:
- SMBJ6V5CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6V5CA.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:11,572
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Product details
Overview
SMBJ6V5CA from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy ESD and surge protection in DC power rails and signal lines. It features a 6.5 V working stand-off voltage (VWM), 7.22–8.82 V breakdown voltage (VBR), 12.3 V maximum clamping voltage (VC) at 51 A peak pulse current, and 600 W peak pulse power rating with DO-214AA (SMB) package - deployed in automotive lighting control modules to safeguard CAN transceivers against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMBJ6V5CA datasheet, SMBJ6V5CA pinout, SMBJ6V5CA application, or SMBJ6V5CA equivalent, key selection considerations include bidirectional clamping behavior, 12.3 V clamping voltage at 51 A, compliance with ISO 7637-2, moisture sensitivity level 1, and RoHS/halogen-free qualification - all critical for robust automotive and industrial system-level immunity design.
Technical Context
The SMBJ6V5CA implements a glass-passivated silicon junction optimized for sub-nanosecond response (<1.0 ps) to fast transients, enabling effective suppression of ESD (IEC 61000-4-2) and electrical fast transients (IEC 61000-4-4). Its bidirectional configuration eliminates polarity dependency, supporting symmetric surge protection on AC-coupled or floating signal paths without external circuit reconfiguration.
Thermally, it sustains 150°C maximum junction temperature with 10°C/W junction-to-case and 55°C/W junction-to-ambient thermal resistance. The device operates across –55°C to +150°C ambient range and exhibits <1 µA blocking leakage at 6.5 V, ensuring minimal standby power impact in always-on systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC bias margin for protected line. |
| VBR min / max | 7.22 V / 8.82 V @ 10 mA - Confirmed breakdown threshold range; ensures reliable turn-on above normal operating voltage. |
| VC @ IPP | 12.3 V @ 51 A (10/1000 µs) - Clamped voltage during worst-case surge; determines maximum stress on downstream ICs. |
| PPK | 600 W - Peak pulse power handling per single 10/1000 µs waveform; supports ISO 7637-2 Pulse 3b (50 V/µs) immunity. |
| ID @ VWM | <1 µA - Ultra-low leakage at rated stand-off; avoids signal distortion or battery drain in low-power sensor interfaces. |
| Package | DO-214AA (SMB) - Industry-standard surface-mount outline with 0.090 g mass; compatible with automated pick-and-place and reflow. |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band (bidirectional operation renders band non-functional but retained for mechanical consistency).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | Both terminals function identically; no polarity-sensitive connection required - simplifies PCB layout and reduces BOM variants. |
Key Features
| Feature | Design Value |
|---|---|
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnect/connect), and Pulse 3a/3b (switching noise) - enables drop-in use in automotive ECUs without additional filtering. |
| Moisture sensitivity level 1 | No floor life limitation or bake requirement prior to reflow - eliminates production delays and moisture-related delamination risk. |
| Fast response time <1.0 ps | Clamps transients before propagation into sensitive analog front-ends or microcontroller I/O - critical for protecting high-speed CAN/LIN transceivers. |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - satisfies environmental compliance for global OEM Tier 1 supply chains. |
Applications
| Automotive Lighting Control | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting LED driver ICs and microcontrollers in headlamp control units exposed to load-dump transients during alternator regulation faults. IC Role / Device Role: Bidirectional TVS placed across VCC-GND input rail to clamp ISO 7637-2 Pulse 1 (−150 V, 50 ms) and Pulse 2a (+100 V, 50 ms). Use Value: Limits rail voltage to ≤12.3 V during 51 A surge, preventing latch-up or permanent damage to 5 V logic and gate drivers. |
Use Scenario: Shielding 4–20 mA current-loop transmitter outputs from EFT bursts in factory automation PLC I/O modules. IC Role / Device Role: TVS connected between signal line and ground to absorb IEC 61000-4-4 EFT (±2 kV, 5 kHz burst) energy. Use Value: Sub-ns response ensures clamping before transients couple into op-amp input stages, preserving loop accuracy and avoiding reset events. |
| USB-C Power Delivery Port | Smart Home Gateway Ethernet PHY |
Use Scenario: Safeguarding USB-C CC and VCONN lines against hot-plug ESD (±15 kV contact) in portable docking stations. IC Role / Device Role: Bidirectional TVS placed on each CC line to shunt ESD current away from USB PD controller and level shifters. Use Value: 12.3 V clamping prevents overvoltage on 3.3 V tolerant CC pins while maintaining signal integrity up to 3 A charging negotiation. |
Use Scenario: Protecting 10/100BASE-TX Ethernet PHY differential pairs from lightning-induced surges entering via PoE-enabled RJ45 jacks. IC Role / Device Role: TVS array (using SMBJ6V5CA per line pair) placed at connector ingress to clamp common-mode transients before magnetics. Use Value: 600 W rating handles induced surges up to 1.2/50 µs waveform; DO-214AA footprint allows compact placement adjacent to jack. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ6.5CA | Same DO-214AC (SMA) package; 12.7 V VC @ 50 A; 400 W PPK rating; higher RθJA (65°C/W). | Lower power handling limits use in high-repetition surge environments (e.g., motor drives); requires derating above 70°C ambient. | Select when legacy SMA footprint compatibility is mandatory and peak surge energy is ≤400 W. |
| ON Semiconductor SMCJ6.5CA | DO-214AB (SMC) package; 12.3 V VC @ 51 A; 1500 W PPK; larger footprint (7.11 × 6.22 mm vs. SMB's 4.57 × 3.94 mm). | Higher surge capacity suits industrial motor controllers; board space penalty precludes use in space-constrained automotive modules. | Select when 1500 W surge margin is required and PCB area permits SMC outline. |
Compared with SMBJ6V5CA, SMAJ6.5CA offers identical clamping performance but reduced surge endurance and thermal efficiency, while SMCJ6.5CA delivers triple the peak power at the cost of 2.5× board area - making SMBJ6V5CA the optimal balance of compactness, 600 W capability, and automotive-grade reliability.
Availability
SMBJ6V5CA is available at Aetrix Electronics and suitable for automotive lighting control, industrial sensor interface, USB-C power delivery port, and smart home gateway Ethernet PHY applications requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBJ6V5CA 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs since 1979.
The SMBJ series was engineered specifically for AEC-Q101-compliant automotive and harsh-environment industrial surge protection, emphasizing ISO 7637-2 immunity, moisture resilience (MSL 1), and high-reliability packaging.
FAQ
What is the clamping voltage of SMBJ6V5CA under standard test conditions?
The SMBJ6V5CA has a maximum clamping voltage (VC) of 12.3 V when subjected to a 10/1000 µs unidirectional surge current of 51 A. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuits during transient events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is SMBJ6V5CA suitable for bidirectional signal line protection?
Yes, SMBJ6V5CA is explicitly designed for bidirectional operation, as confirmed by its "CA" suffix and electrical specifications applying equally in both directions. It provides symmetrical clamping on AC-coupled or floating lines such as RS-485, CAN, or USB D+/D−, eliminating need for polarity-aware layout or dual-device configurations.
Does SMBJ6V5CA meet automotive surge immunity standards?
Yes, SMBJ6V5CA meets ISO 7637-2 requirements for Pulse 1 (inductive load dump), Pulse 2a/2b (battery transients), and Pulse 3a/3b (switching noise), validated per the manufacturer's test data. Its 600 W peak power rating and 12.3 V clamping enable direct integration into automotive ECU power inputs without supplemental filtering.
What is the maximum operating temperature for SMBJ6V5CA?
The SMBJ6V5CA supports a junction temperature range of –55°C to +150°C, with a maximum steady-state power dissipation of 3 W at 25°C ambient. Thermal derating follows the published curve (Fig.2), allowing full 600 W pulse operation only at TA ≤ 25°C - sustained high-temp designs require thermal modeling using RθJC = 10°C/W.
How does the DO-214AA (SMB) package of SMBJ6V5CA compare to SMA or SMC outlines?
The DO-214AA (SMB) package of SMBJ6V5CA measures 4.57 × 3.94 mm - smaller than DO-214AB (SMC, 7.11 × 6.22 mm) and larger than DO-214AC (SMA, 4.32 × 2.62 mm). Its 0.090 g mass and MSL 1 rating support high-yield automated assembly, while offering better thermal performance than SMA and superior space efficiency versus SMC for mid-power TVS applications.
SMBJ6V5CA 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):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 53.6A
- 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)
SMBJ6V5CA FAQ
1.How can I place an order for SMBJ6V5CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6V5CA 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 SMBJ6V5CA reliable?
The price and inventory of SMBJ6V5CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ6V5CA is usually 5 days.
3.What payment methods are accepted for SMBJ6V5CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6V5CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6V5CA?
SMBJ6V5CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6V5CA 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 SMBJ6V5CA?
For technical support, including SMBJ6V5CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6V5CA requirements.
6.How does Aetrix verify that SMBJ6V5CA is sourced from the original manufacturer or authorized distributors?
All SMBJ6V5CA 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 SMBJ6V5CA meets industry standards.
7.What is the process for return or replacement of SMBJ6V5CA?
All SMBJ6V5CA units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6V5CA, 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 SMBJ6V5CA part is unused and in its original packaging.
Return procedure for SMBJ6V5CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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