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Taiwan Semiconductor Corporation SMBJ5.0CA
- Part No.:
- SMBJ5.0CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5.0CA.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,815
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Product details
Overview
SMBJ5.0CA from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, 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), 9.2 V maximum clamping voltage (VC) at 800 A peak pulse current, and 600 W peak pulse power rating.
For engineers reviewing the SMBJ5.0CA datasheet, SMBJ5.0CA pinout, SMBJ5.0CA application, or SMBJ5.0CA equivalent, key selection criteria include bidirectional clamping behavior, sub-1 ps response time, <1 µA leakage at 5.0 V, ISO 7637-2 compliance, and DO-214AA mechanical compatibility with automated SMT assembly.
Technical Context
The SMBJ5.0CA implements a glass-passivated silicon junction optimized for fast transient suppression in automotive and industrial environments. Its bidirectional configuration enables symmetrical clamping across both polarities without external polarity management, and it meets ISO 7637-2 Pulse 1/2a/2b/3a/3b test requirements for automotive electronics.
Thermal performance is defined by 10 °C/W junction-to-case and 55 °C/W junction-to-ambient thermal resistance. The device operates over –55 °C to +150 °C junction temperature range and supports 100 A non-repetitive forward surge current (IFSM) for unidirectional variants - though SMBJ5.0CA itself is bidirectional and does not specify IFSM or VF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous DC or RMS voltage the device blocks without clamping |
| VBR min / max | 6.4 V / 7.3 V @ IT = 10 mA - Confirmed breakdown threshold range under standardized test conditions |
| VC @ IPP | 9.2 V @ 800 A - Clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPK | 600 W - Peak pulse power handling capability per single 10/1000 µs transient |
| ID @ VWM | <1 µA - Low leakage ensures minimal standby power loss and signal integrity |
| Response time | <1.0 ps - Enables effective suppression of ESD events before circuit damage occurs |
| Package | DO-214AA (SMB) - Industry-standard surface-mount outline compatible with IPC-7351B footprint |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band (not functional in bidirectional SMBJ5.0CA), weight ≈ 0.090 g, UL 94V-0 rated compound, JESD201 Class 2 whisker compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Transient conduction path | Both terminals function identically - no polarity sensitivity; symmetric clamping in either direction |
| Case | Mechanical mounting surface | No electrical connection; thermally coupled to die for dissipation via PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection on AC lines, differential buses, or floating nodes without polarity constraints |
| ISO 7637-2 compliance | Validated for automotive load-dump and inductive-switching transients (Pulse 1/2a/2b/3a/3b) |
| Glass passivated junction | Ensures stable VBR and low leakage over temperature and lifetime vs. epoxy-passivated alternatives |
| Moisture sensitivity level 1 | Eliminates bake requirements prior to reflow - supports standard SMT assembly without special handling |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS directives for environmentally constrained applications |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 5 V CAN transceiver power inputs against load dump and jump-start surges in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed between VCC and GND to clamp transients before they reach the IC's internal LDO or regulator. Use Value: Limits voltage excursion to ≤9.2 V during 800 A 10/1000 µs pulses, preserving IC functionality per ISO 7637-2 Pulse 2b. | Use Scenario: Safeguarding analog outputs of 4–20 mA current-loop transmitters exposed to field wiring ESD. IC Role / Device Role / Timing Role: Placed across output terminals to shunt fast transients while maintaining loop accuracy during normal operation. Use Value: Sub-1 ps response and <1 µA leakage at 5 V ensure no signal distortion or offset drift in precision current sources. |
| LED Driver Input Protection | USB Port ESD Suppression |
Use Scenario: Shielding constant-current LED driver ICs from inductive switching spikes generated by nearby relay coils. IC Role / Device Role / Timing Role: Connected across input capacitor to absorb energy from back-EMF events before reaching driver FET gate or controller. Use Value: 600 W peak power rating sustains repeated 100 ns–1 µs spikes common in 24 V industrial lighting systems. | Use Scenario: Adding robustness to USB 2.0 data lines (D+/D−) in embedded host controllers subject to user-handling ESD. IC Role / Device Role / Timing Role: Bidirectional placement across differential pair to clamp ±8 kV contact discharge per IEC 61000-4-2. Use Value: Symmetric clamping ensures equal protection on both lines without skew or common-mode imbalance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0A (Taiwan Semiconductor) | Unidirectional; VF = 3.5 V @ 50 A; same VWM/VBR/VC but asymmetric conduction | Requires correct polarity orientation; unsuitable for AC or floating nodes | Select SMBJ5.0A only when protecting DC rails with known polarity and where forward conduction path matters |
| SMAJ5.0CA (Littelfuse) | Same DO-214AC (SMA) package; 400 W PPK; higher VC = 9.6 V @ 500 A; slightly looser VBR tolerance | Lower surge capacity and different thermal profile due to smaller SMA package | Use SMAJ5.0CA only if board space is constrained and 400 W rating suffices; verify layout derating for SMB vs. SMA thermal resistance |
Compared with SMBJ5.0A and SMAJ5.0CA, SMBJ5.0CA provides superior 600 W surge handling in the larger DO-214AA package, bidirectional symmetry for flexible placement, and tighter clamping (9.2 V) - making it optimal for automotive and industrial designs requiring robust, polarity-agnostic protection.
Availability
SMBJ5.0CA is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, LED driver input safeguarding, and USB port ESD suppression requiring stable component supply across production lifecycles.
Supply support for SMBJ5.0CA 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 for industrial, automotive, and consumer markets.
The SMBJ series was developed specifically for high-reliability transient suppression in harsh environments, emphasizing ISO 7637-2 compliance, moisture-insensitive packaging, and stable parametric performance across temperature extremes.
FAQ
What is the clamping voltage of SMBJ5.0CA under a standard 10/1000 µs surge?
The SMBJ5.0CA has a maximum clamping voltage (VC) of 9.2 V when subjected to an 800 A peak impulse current with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream circuitry remains within safe operating limits during transient events. The SMBJ5.0CA achieves this clamping performance while maintaining low leakage and fast response.
Is SMBJ5.0CA unidirectional or bidirectional, and how does that affect PCB layout?
SMBJ5.0CA is a bidirectional TVS diode, meaning it clamps transients equally in both directions without polarity dependence. Unlike unidirectional variants such as SMBJ5.0A, no cathode marking dictates orientation - simplifying layout and eliminating risk of reverse installation. This makes SMBJ5.0CA ideal for AC-coupled lines, differential signals, or floating nodes where polarity is undefined.
Does SMBJ5.0CA meet automotive transient immunity standards?
Yes, SMBJ5.0CA meets ISO 7637-2 requirements for Pulses 1, 2a, 2b, 3a, and 3b - covering key automotive transients including load dump, battery reversal, and inductive switching. Its 600 W peak power rating, 9.2 V clamping, and –55 °C to +150 °C operating range make it suitable for engine control units, body electronics, and infotainment systems per AEC-Q101 stress testing guidelines.
What is the leakage current specification for SMBJ5.0CA at its working voltage?
At its 5.0 V working stand-off voltage (VWM), SMBJ5.0CA exhibits a maximum blocking leakage current (ID) of less than 1 µA. This ultra-low leakage preserves signal integrity in high-impedance circuits and minimizes quiescent power loss in battery-operated or energy-sensitive systems. The value is confirmed at TA = 25 °C and remains stable across temperature due to the device's glass-passivated junction.
What package type and mounting compatibility does SMBJ5.0CA use?
SMBJ5.0CA uses the DO-214AA (SMB) surface-mount package, with matte tin-plated leads compliant with J-STD-002 solderability requirements. Its footprint matches IPC-7351B standard SMB outlines, supports automated pick-and-place, and has moisture sensitivity level 1 - eliminating pre-bake steps. The 0.090 g mass and UL 94V-0 molding compound further enable reliable reflow assembly in high-volume manufacturing.
SMBJ5.0CA 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:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 68A
- 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)
SMBJ5.0CA FAQ
1.How can I place an order for SMBJ5.0CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5.0CA 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 SMBJ5.0CA reliable?
The price and inventory of SMBJ5.0CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ5.0CA is usually 5 days.
3.What payment methods are accepted for SMBJ5.0CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5.0CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5.0CA?
SMBJ5.0CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5.0CA 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 SMBJ5.0CA?
For technical support, including SMBJ5.0CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5.0CA requirements.
6.How does Aetrix verify that SMBJ5.0CA is sourced from the original manufacturer or authorized distributors?
All SMBJ5.0CA 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 SMBJ5.0CA meets industry standards.
7.What is the process for return or replacement of SMBJ5.0CA?
All SMBJ5.0CA units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5.0CA, 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 SMBJ5.0CA part is unused and in its original packaging.
Return procedure for SMBJ5.0CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ5.0CA Tags
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