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Taiwan Semiconductor Corporation SMBJ58CAH
- Part No.:
- SMBJ58CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ58CAH.pdf
- Description:
- TVS DIODE 58VWM 93.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,023
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Product details
Overview
SMBJ58CAH from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, rated for 600W peak pulse power, 58V working stand-off voltage (VWM), and 93.6V maximum clamping voltage (VC) at 6.7A peak impulse current - designed to protect automotive and industrial control circuits against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMBJ58CAH datasheet, SMBJ58CAH pinout, SMBJ58CAH application, or SMBJ58CAH equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, <1.0ps response time, sub-1μA leakage above 10V, and compliance with IEC 61249-2-21 halogen-free requirements.
Technical Context
The SMBJ58CAH implements a glass-passivated silicon junction optimized for fast transient suppression in bidirectional signal and power lines. It operates symmetrically in both polarities with identical breakdown (64.4–71.2V), clamping (93.6V), and leakage (<1μA @ 58V) characteristics.
Its thermal design supports 150°C max junction temperature and leverages DO-214AA's low RθJA of 55°C/W. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity - enabling robust reflow compatibility in automated SMT assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 64.4 / 71.2 V - Breakdown occurs within this range at 1 mA test current, ensuring reliable turn-on margin |
| VC @ IPP | 93.6 V at 6.7 A - Clamped voltage during 10/1000µs surge, limiting downstream IC stress |
| PPK | 600 W - Peak pulse power handling per single 10/1000µs transient, per ISO 7637-2 |
| IR @ VWM | <1 µA - Minimal leakage at operating voltage, preserving low-power circuit integrity |
| Response time | <1.0 ps - Enables suppression of ESD and EFT events before sensitive logic is disrupted |
| TJ max | +150 °C - Supports under-hood automotive and high-ambient industrial environments |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode band marking; dual-terminal configuration (anode/cathode) supporting bidirectional operation without polarity dependency.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (marked end) | Transient return path | Provides symmetrical conduction path for positive and negative surges relative to cathode |
| Cathode (band end) | Reference terminal | Establishes clamping reference; bidirectional symmetry means either terminal may serve as system ground reference |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress-test requirements including temperature cycling, HTRB, and ESD |
| Glass passivated junction | Enhances long-term reliability and moisture resistance vs. epoxy-passivated alternatives |
| ISO 7637-2 compliance | Guarantees protection against real-world vehicle electrical disturbances (Pulse 1/2a/2b/3a/3b) |
| Halogen-free (IEC 61249-2-21) | Meets environmental regulations for RoHS-compliant manufacturing and end-of-life processing |
| J-STD-020 Level 1 MSL | Enables standard reflow without baking, reducing production overhead and moisture-related defects |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus, CAN node power rails, and body control module inputs from load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed between power rail and ground, absorbing transients before they reach LDOs or microcontrollers. Use Value: Limits clamped voltage to 93.6V during 6.7A surges, preventing latch-up or gate oxide damage in 5V/12V automotive ICs. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in PLC I/O modules from EFT and ESD coupling via field wiring. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical) shunt protector across differential signal pairs or supply-to-ground paths. Use Value: Sub-1μA leakage preserves signal integrity in µA-level sensor bias networks while responding in <1ps to fast transients. |
| LED Driver Surge Suppression | ESD-Sensitive Communication Port Protection |
Use Scenario: Safeguarding constant-current LED drivers in streetlight and automotive headlamp systems from inductive switching spikes. IC Role / Device Role / Timing Role: Parallel-connected TVS on driver output stage, clamping flyback voltages generated by relay or MOSFET switching. Use Value: 600W peak power rating handles repetitive 10/1000µs pulses common in 12V/24V lighting systems without degradation. | Use Scenario: Protecting RS-485 transceivers and USB-C port power delivery lines in industrial gateways from human-body-model (HBM) ESD events. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on VBUS and data line pairs, preceding secondary filtering and TVS arrays. Use Value: 93.6V clamping ensures safe voltage margin below 100V-rated transceiver absolute maximum ratings during ±8kV contact discharge. |
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 SMAJ58CA | Same DO-214AC (SMA) package; 94V clamping at 6.7A; slightly higher RθJA (65°C/W) | Lower power density due to smaller package; derated PPK = 400W | Select when footprint constraints require SMA size and 400W rating suffices |
| ON Semiconductor 1.5SMC58CA | DO-214AB (SMC) package; 96.8V clamping at 6.5A; 1500W PPK rating | Higher clamping voltage increases risk to downstream 5V logic; requires larger PCB area | Select only if system demands >600W surge capacity and layout allows SMC footprint |
Compared with SMBJ58CAH, SMAJ58CA offers identical voltage specs but lower surge robustness in a smaller package, while 1.5SMC58CA delivers higher power handling at the cost of increased clamping voltage and board space - making SMBJ58CAH the optimal balance of AEC-Q101 compliance, 600W capability, and SMB footprint efficiency.
Availability
SMBJ58CAH is available at Aetrix Electronics and suitable for automotive infotainment power rails, industrial PLC I/O protection, and LED driver surge suppression requiring stable component supply across extended production cycles.
Supply support for SMBJ58CAH 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 devices since 1979.
The SMBJH series was developed specifically for AEC-Q101-compliant automotive and harsh-environment industrial applications demanding high-reliability transient suppression in compact surface-mount packages.
FAQ
What does the 'CAH' suffix indicate in SMBJ58CAH?
The 'CAH' suffix denotes a bidirectional configuration with AEC-Q101 qualification and halogen-free construction. Unlike unidirectional 'H' variants, SMBJ58CAH provides symmetrical clamping for both positive and negative transients - critical for AC-coupled or floating signal lines where polarity is undefined.
Is SMBJ58CAH compatible with lead-free reflow processes?
Yes, SMBJ58CAH is fully compatible with lead-free reflow soldering per J-STD-020 Level 1 moisture sensitivity classification. Its matte tin-plated leads meet J-STD-002 solderability requirements, and the DO-214AA package withstands peak temperatures up to 260°C without delamination or parametric shift.
How does SMBJ58CAH differ from SMBJ58AH?
SMBJ58AH is unidirectional, while SMBJ58CAH is bidirectional - meaning SMBJ58CAH clamps transients of either polarity across its terminals. Both share identical VWM (58V), VBR (64.4–71.2V), and VC (93.6V), but SMBJ58CAH eliminates need for polarity-aware placement in differential or AC signal paths.
Does SMBJ58CAH meet ISO 7637-2 Pulse 5a (load dump) requirements?
No - SMBJ58CAH is rated for ISO 7637-2 Pulses 1, 2a, 2b, 3a, and 3b only. Pulse 5a (load dump) requires higher energy handling (typically >1000W); for that, designers should consider TSC's higher-power P6KE or 1.5KE series or stacked TVS solutions.
What is the maximum junction temperature derating for SMBJ58CAH at 85°C ambient?
Per Figure 2 in the datasheet, SMBJ58CAH's peak pulse power derates to ~75% of 600W (i.e., 450W) at TA = 85°C. This is calculated using its RθJA = 55°C/W and TJ(max) = 150°C, ensuring safe operation under sustained high-temperature conditions without thermal runaway.
SMBJ58CAH 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):
- 58V
- Voltage - Breakdown (Min):
- 64.4V
- Voltage - Clamping (Max) @ Ipp:
- 93.6V
- Current - Peak Pulse (10/1000µs):
- 6.7A
- 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)
SMBJ58CAH FAQ
1.How can I place an order for SMBJ58CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ58CAH 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 SMBJ58CAH reliable?
The price and inventory of SMBJ58CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ58CAH is usually 5 days.
3.What payment methods are accepted for SMBJ58CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ58CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ58CAH?
SMBJ58CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ58CAH 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 SMBJ58CAH?
For technical support, including SMBJ58CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ58CAH requirements.
6.How does Aetrix verify that SMBJ58CAH is sourced from the original manufacturer or authorized distributors?
All SMBJ58CAH 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 SMBJ58CAH meets industry standards.
7.What is the process for return or replacement of SMBJ58CAH?
All SMBJ58CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ58CAH, 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 SMBJ58CAH part is unused and in its original packaging.
Return procedure for SMBJ58CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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