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Taiwan Semiconductor Corporation SMBJ5.0CH
- Part No.:
- SMBJ5.0CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5.0CH.pdf
- Description:
- 600W, 6.9V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,026
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Product details
Overview
SMBJ5.0CH 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 automotive and industrial power rails. It features 600W peak pulse power rating, 5.0V working stand-off voltage (VWM), 6.4–7.3V breakdown voltage (VBR), 9.6V maximum clamping voltage at 800A peak current, and AEC-Q101 qualification.
For engineers reviewing the SMBJ5.0CH datasheet, SMBJ5.0CH pinout, SMBJ5.0CH application, or SMBJ5.0CH equivalent, key selection criteria include unidirectional vs. bidirectional configuration, clamping voltage margin relative to protected IC VDD, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and moisture sensitivity level (MSL 1) for lead-free reflow compatibility.
Technical Context
The SMBJ5.0CH implements a glass-passivated silicon junction optimized for fast transient response (<1.0 ps) and low leakage (<1 µA at 5.0V). Its bidirectional architecture enables symmetrical clamping on both polarities without external polarity management, supporting robust protection of differential buses and AC-coupled signal lines.
Thermal performance is defined by RθJC = 10°C/W and RθJA = 55°C/W, enabling reliable operation up to TJ = +150°C. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements, confirming suitability for automated SMT assembly and harsh-environment deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system rail margin for safe operation. |
| VBR min/max | 6.4 / 7.3 V @ 10 mA - Breakdown threshold range defining turn-on consistency; tight 13% spread ensures predictable protection timing. |
| VC @ IPP | 9.6 V @ 800 A - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to <2× VWM under worst-case transients. |
| PPK | 600 W - Peak pulse power handling per IEC 61000-4-5; supports automotive load-dump and inductive switching immunity. |
| ID @ VWM | <1 µA - Ultra-low leakage at rated stand-off; prevents battery drain in always-on automotive modules. |
| TJ max | +150 °C - Maximum junction temperature; enables placement near hot components (e.g., power MOSFETs, DC-DC converters). |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Weight: 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry terminal in forward bias; common node for bidirectional conduction path | Connects to protected line; symmetric structure eliminates polarity dependency in AC or floating systems. |
| Cathode (banded end) | Current exit terminal in forward bias; reference node for clamping action | Provides low-impedance path to ground or return rail during overvoltage events; band orientation confirms physical polarity alignment. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards. |
| ISO 7637-2 compliance | Passes Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) without degradation. |
| MSL Level 1 | Unlimited floor life at ≤30°C/60% RH; supports standard reflow profiles without baking preconditioning. |
| Glass passivated junction | Enhances long-term stability against humidity ingress and thermal stress, critical for 15+ year automotive service life. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12 V battery-supplied ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping element placed between battery input and DC-DC converter input stage. Use Value: Limits transient voltage to ≤9.6 V, preventing damage to 5 V LDOs and microcontrollers while sustaining 800 A surge current. |
Use Scenario: 4–20 mA current-loop sensors connected to PLC analog inputs in factory automation cabinets. IC Role / Device Role / Timing Role: Bidirectional shunt protector across sensor input terminals to absorb EFT bursts and cable discharge events. Use Value: Maintains signal integrity below 5.0 V stand-off while clamping ±9.6 V surges-enabling accurate current measurement without offset drift. |
| LED Lighting Driver Protection | USB-C Port ESD Hardening |
Use Scenario: Constant-current LED drivers in automotive headlamps subjected to inductive kickback from relay switching. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output to clamp flyback spikes before reaching LED strings. Use Value: Responds in <1.0 ps to limit voltage overshoot to 9.6 V, protecting 65 V-rated MOSFETs and avoiding thermal runaway. |
Use Scenario: USB-C receptacles in portable medical devices requiring IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) ESD immunity. IC Role / Device Role / Timing Role: Bidirectional TVS on CC1/CC2 and VBUS lines to divert ESD current away from USB controller PHY. Use Value: Clamps ±9.6 V transients within nanoseconds, preserving USB PD negotiation integrity and preventing PHY latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0CAH | Same VWM (5.0 V), identical VBR (6.4–7.0 V), but lower clamping voltage (9.2 V @ 800 A) and tighter VBR tolerance (0.6 V span vs. 0.9 V). | Better suited for ultra-low-voltage systems where 0.4 V clamping margin reduction improves safety margin over IC absolute maximum ratings. | Select SMBJ5.0CAH when clamping voltage headroom is constrained and tighter VBR distribution is required for production yield control. |
| SAC5.0 | Same DO-214AA package, but lower PPK (400 W), higher VBR (6.0–7.2 V), and higher VC (12.5 V @ 32.4 A); not AEC-Q101 qualified. | Limited to non-automotive industrial or consumer applications with less stringent surge immunity requirements. | Choose SAC5.0 only for cost-sensitive, non-automotive designs where 600 W surge capacity and AEC-Q101 are not mandatory. |
Compared with SMBJ5.0CH, SMBJ5.0CAH offers improved clamping precision and margin, while SAC5.0 trades surge robustness and automotive qualification for lower cost-making SMBJ5.0CH the optimal balance of performance, reliability, and compliance for demanding embedded systems.
Availability
SMBJ5.0CH is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, LED lighting drivers, and USB-C port protection requiring stable component supply across extended temperature ranges and high-reliability manufacturing environments.
Supply support for SMBJ5.0CH 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power MOSFETs for automotive and industrial markets.
The SMBJH series was developed specifically to meet AEC-Q101 and ISO 7637-2 requirements for high-energy transient suppression in 12 V/24 V automotive power networks and ruggedized industrial equipment.
FAQ
What is the polarity configuration of SMBJ5.0CH?
The SMBJ5.0CH is a bidirectional TVS diode, meaning it provides symmetrical clamping for both positive and negative transients without requiring external polarity routing. Its internal structure consists of two opposing avalanche diodes, enabling protection of AC-coupled signals, differential buses, and floating power domains. This configuration is confirmed by the "CH" suffix per Taiwan Semiconductor's ordering nomenclature and electrical specifications applying in both directions.
Does SMBJ5.0CH meet automotive qualification standards?
Yes, SMBJ5.0CH is AEC-Q101 qualified and explicitly tested to ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b waveforms. Its construction-including glass passivation, MSL Level 1 rating, JESD201 Class 2 whisker resistance, and UL 94V-0 molding compound-ensures compliance with automotive environmental and reliability requirements. These qualifications are documented in Taiwan Semiconductor's official SMBJH Series datasheet Version A2102.
What is the maximum clamping voltage of SMBJ5.0CH under surge conditions?
The SMBJ5.0CH has a maximum clamping voltage (VC) of 9.6 V when subjected to an 800 A peak impulse current with a 10/1000 µs waveform. This value is measured at the device terminals and represents the upper bound of voltage seen by downstream circuitry during worst-case transients. It is derived directly from Taiwan Semiconductor's Electrical Specifications table and defines the critical overvoltage protection threshold for connected ICs.
How does SMBJ5.0CH differ from unidirectional variants like SMBJ5.0H?
SMBJ5.0CH differs from SMBJ5.0H primarily in polarity configuration and forward voltage behavior: SMBJ5.0CH is bidirectional with symmetrical VBR and VC in both directions, while SMBJ5.0H is unidirectional and specifies VF = 3.5 V at 50 A forward current. The CH variant omits VF specification entirely, as forward conduction is not part of its intended protection mode. Both share identical VWM (5.0 V), PPK (600 W), and package (DO-214AA).
Is SMBJ5.0CH compatible with lead-free reflow soldering processes?
Yes, SMBJ5.0CH supports standard lead-free reflow profiles with a peak temperature of 260°C. Its matte tin-plated leads comply with J-STD-002 for solderability, and its MSL Level 1 rating per J-STD-020 means it can be stored indefinitely at ≤30°C/60% RH without baking. The UL 94V-0 flammability rating of the molding compound further ensures process compatibility and safety during high-temperature assembly.
SMBJ5.0CH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJH
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ5.0CH FAQ
1.How can I place an order for SMBJ5.0CH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5.0CH 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 SMBJ5.0CH reliable?
The price and inventory of SMBJ5.0CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ5.0CH is usually 5 days.
3.What payment methods are accepted for SMBJ5.0CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5.0CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5.0CH?
SMBJ5.0CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5.0CH 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 SMBJ5.0CH?
For technical support, including SMBJ5.0CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5.0CH requirements.
6.How does Aetrix verify that SMBJ5.0CH is sourced from the original manufacturer or authorized distributors?
All SMBJ5.0CH 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 SMBJ5.0CH meets industry standards.
7.What is the process for return or replacement of SMBJ5.0CH?
All SMBJ5.0CH units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5.0CH, 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 SMBJ5.0CH part is unused and in its original packaging.
Return procedure for SMBJ5.0CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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