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Taiwan Semiconductor Corporation SMBJ90CAH
- Part No.:
- SMBJ90CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90CAH.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,061
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Product details
Overview
SMBJ90CAH from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, rated for 600W peak pulse power, 90V working stand-off voltage (VWM), and 146V maximum clamping voltage (VC) at 4.3A peak impulse current. It protects automotive and industrial electronics against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients and ESD events.
For engineers reviewing the SMBJ90CAH datasheet, SMBJ90CAH pinout, SMBJ90CAH application, or SMBJ90CAH equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, sub-1ps response time, low leakage (<1µA @ 90V), and compliance with automotive surge immunity standards.
Technical Context
The SMBJ90CAH employs a glass-passivated silicon junction optimized for fast transient suppression in bidirectional configurations. Its breakdown voltage (VBR) is specified at 100–111V (min–max) under 1mA test current, ensuring reliable conduction onset above 90V VWM while maintaining low leakage below that threshold.
Thermal performance is defined by RθJC = 10°C/W and RθJA = 55°C/W, supporting operation up to +150°C junction temperature. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, enabling robust reflow compatibility in automated SMT lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 100V / 111V @ 1mA - Ensures predictable turn-on margin above VWM for stable protection threshold |
| VC @ IPP | 146V @ 4.3A - Clamped voltage during 10/1000µs surge, limiting downstream stress to safe levels |
| PPK | 600W - Peak pulse power handling per single 10/1000µs transient, per ISO 7637-2 |
| ID @ VWM | <1µA - Minimal leakage current at rated stand-off, preserving signal integrity and power efficiency |
| Response time | <1.0ps - Enables effective suppression of nanosecond-scale ESD and EFT events |
| TJ max | +150°C - Supports under-hood and high-temperature industrial environments without derating |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode band marking; symmetrical bidirectional structure means both terminals function identically as anode/cathode depending on polarity of transient event.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (dual) | Bidirectional transient path | Either terminal serves as current entry point during positive or negative surges - no fixed polarity required |
| Cathode band | Orientation marker | Indicates terminal identification for unidirectional variants; irrelevant for SMBJ90CAH's symmetric bidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives |
| ISO 7637-2 compliance | Guarantees robustness against real-world vehicle electrical disturbances including load dump, inductive switching, and battery reversal |
| Moisture sensitivity level 1 | Enables standard reflow without baking, reducing manufacturing cost and process complexity |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU directives for environmentally responsible production and end-of-life handling |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and body control modules from load dump and jump-start transients in 12V/24V systems. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across supply rail and ground to shunt surge energy before it reaches sensitive ICs. Use Value: Limits voltage excursion to ≤146V during 600W transients, preventing latch-up or gate oxide damage in microcontrollers and transceivers. | Use Scenario: Safeguarding analog front-ends of pressure, temperature, and position sensors exposed to EFT and ESD in factory automation equipment. IC Role / Device Role / Timing Role: Low-leakage (≤1µA) standoff device that remains transparent during normal operation but clamps within <1ps when fast transients occur. Use Value: Maintains sensor accuracy and offset stability while surviving repeated 4kV contact ESD events per IEC 61000-4-2. |
| LED Driver Input Stage Protection | Power Supply EMI Filter Clamp |
Use Scenario: Shielding constant-current LED drivers from inductive kickback generated by relay or solenoid switching in signage and lighting systems. IC Role / Device Role / Timing Role: Fast-response TVS placed across input capacitors to absorb repetitive 10/1000µs pulses without thermal runaway. Use Value: Withstands ≥1000 surges at rated PPK due to low RθJA (55°C/W) and high surge current rating (4.3A). | Use Scenario: Suppressing differential-mode noise spikes coupled into AC-DC or DC-DC converter inputs via EMI filters. IC Role / Device Role / Timing Role: Bidirectional clamp integrated between line and neutral (or VIN and GND) to prevent filter capacitor overvoltage and rectifier overstress. Use Value: Symmetric VBR (100–111V) ensures equal clamping in both polarities, eliminating need for dual unidirectional devices. |
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 SMAJ90CA | Same DO-214AC (SMA) package; lower PPK (400W); VBR min/max = 100–115V; VC = 150V @ 3.5A | Lower surge rating limits use in high-energy automotive load dump scenarios | Select SMBJ90CAH when 600W clamping capacity and AEC-Q101 validation are required. |
| Vishay SMF90CA | DO-219AB (SOD-123FL) package; PPK = 200W; VBR = 100–111V; VC = 146V @ 1.4A | Smaller footprint but insufficient for ISO 7637-2 Pulse 5a (load dump) compliance | Choose SMBJ90CAH for space-tolerant designs needing full automotive surge immunity certification. |
Compared with SMAJ90CA and SMF90CA, SMBJ90CAH delivers 50% higher peak pulse power (600W vs. 400W/200W) in a thermally superior DO-214AA package, enabling reliable operation under sustained surge conditions in automotive and industrial environments.
Availability
SMBJ90CAH is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, LED driver input stages, and power supply EMI filter clamping requiring stable component supply and AEC-Q101 assurance.
Supply support for SMBJ90CAH 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, and rectifiers with global distribution and AEC-Q101 qualification capabilities.
The SMBJH series was developed specifically for automotive and industrial transient suppression, emphasizing high-energy clamping, fast response, and process reliability in harsh environments.
FAQ
What does the 'CAH' suffix indicate in SMBJ90CAH?
The 'CAH' suffix denotes a bidirectional configuration with AEC-Q101 qualification and halogen-free construction. Unlike unidirectional 'H' variants, SMBJ90CAH provides symmetrical clamping for both positive and negative transients without polarity constraints, making it ideal for AC-coupled or floating signal lines where voltage polarity is undefined.
Is SMBJ90CAH compatible with lead-free reflow soldering processes?
Yes, SMBJ90CAH is fully compatible with lead-free reflow soldering. It meets J-STD-020 Moisture Sensitivity Level 1, meaning it can be subjected to standard Pb-free reflow profiles (peak temperature up to 260°C) without preconditioning or baking. Matte tin-plated leads ensure reliable wetting and intermetallic formation per J-STD-002.
How does SMBJ90CAH differ from SMBJ90AH?
SMBJ90CAH is bidirectional, while SMBJ90AH is unidirectional. SMBJ90CAH clamps equally for both polarities with VBR = 100–111V in either direction, whereas SMBJ90AH conducts only in reverse bias and requires correct cathode orientation. Their clamping voltages differ slightly: SMBJ90CAH has VC = 146V @ 4.3A, while SMBJ90AH has VC = 160V @ 3.9A.
Does SMBJ90CAH meet ISO 7637-2 Pulse 5a (load dump) requirements?
No - SMBJ90CAH is rated for ISO 7637-2 Pulses 1, 2a, 2b, 3a, and 3b, but not Pulse 5a (load dump), which demands >1000W capability. Its 600W PPK rating supports all other vehicle transients except load dump. For Pulse 5a, higher-power TVS like 1.5KE91A or specialized load-dump suppressors are required.
What is the maximum junction temperature rating for SMBJ90CAH?
The maximum junction temperature (TJ) for SMBJ90CAH is +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This allows continuous operation in under-hood automotive locations and industrial enclosures where ambient temperatures exceed 100°C, provided thermal design accounts for RθJA = 55°C/W.
SMBJ90CAH 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):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 146V
- Current - Peak Pulse (10/1000µs):
- 4.3A
- 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)
SMBJ90CAH FAQ
1.How can I place an order for SMBJ90CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90CAH 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 SMBJ90CAH reliable?
The price and inventory of SMBJ90CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ90CAH is usually 5 days.
3.What payment methods are accepted for SMBJ90CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90CAH?
SMBJ90CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90CAH 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 SMBJ90CAH?
For technical support, including SMBJ90CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90CAH requirements.
6.How does Aetrix verify that SMBJ90CAH is sourced from the original manufacturer or authorized distributors?
All SMBJ90CAH 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 SMBJ90CAH meets industry standards.
7.What is the process for return or replacement of SMBJ90CAH?
All SMBJ90CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90CAH, 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 SMBJ90CAH part is unused and in its original packaging.
Return procedure for SMBJ90CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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