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Taiwan Semiconductor Corporation SMBJ6.0AH
- Part No.:
- SMBJ6.0AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.0AH.pdf
- Description:
- 600W, 7V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,288
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Product details
Overview
SMBJ6.0AH from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for automotive-grade ESD and surge protection. It features a 6.0V working stand-off voltage (VWM), 6.67–7.37V breakdown voltage (VBR) at 10mA test current, and clamps transients to ≤10.3V at 800A peak pulse current - ideal for protecting CAN bus interfaces, automotive lighting control modules, and power supply inputs against ISO 7637-2 Pulse 1/2a/2b/3a/3b threats.
For engineers reviewing the SMBJ6.0AH datasheet, SMBJ6.0AH pinout, SMBJ6.0AH application, or SMBJ6.0AH equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, clamping performance under 10/1000µs waveform, thermal resistance (RθJA = 55°C/W), and bidirectional variant compatibility (SMBJ6.0CAH) - all critical for robust automotive and industrial transient suppression design.
Technical Context
The SMBJ6.0AH employs a glass-passivated silicon junction optimized for fast response (<1.0ps) and low leakage (<1µA above 10V). Its unidirectional configuration provides asymmetric clamping: forward conduction begins at ~3.5V (per SMBJ5.0H–SMBJ90H family spec), while reverse breakdown initiates at 6.67–7.37V with tight tolerance (±5.3% typical).
Thermally, it supports continuous operation up to +150°C junction temperature, with RθJC = 10°C/W enabling effective heat transfer to PCB copper. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements - confirming suitability for high-reliability automotive PCB assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.0 V - Maximum DC or continuous AC voltage the device blocks without clamping; sets system operating margin before transient activation. |
| VBR @ IT=10mA | 6.67–7.37 V - Confirmed breakdown range ensures reliable turn-on during overvoltage events while avoiding false triggering near nominal rail. |
| VC @ IPP=800A | ≤10.3 V - Clamping voltage under 10/1000µs surge defines maximum stress imposed on downstream ICs like microcontrollers or transceivers. |
| PPK | 600 W - Peak pulse power rating determines survivability against standardized automotive transients (e.g., ISO 7637-2 Pulse 5a). |
| ID @ VWM | <1 µA - Ultra-low leakage preserves battery life in always-on automotive modules and avoids signal integrity degradation in high-impedance nodes. |
| RθJA | 55 °C/W - Junction-to-ambient thermal resistance enables thermal design with standard FR-4 PCBs using recommended pad layout per DO-214AA footprint. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, single-die unidirectional TVS diode with cathode band marking. Matte tin-plated leads meet J-STD-002 solderability; polarity is marked by a band indicating cathode terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-voltage reference; completes clamping path during reverse-biased surge events. |
| Cathode | High-side connection point | Connected to protected line (e.g., CAN_H, 12V rail); conducts surge current to ground when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and infotainment systems per stress test requirements. |
| Clamping voltage ≤10.3V @ 800A | Ensures protected ICs (e.g., TJA1042, SBCs) remain within absolute maximum ratings during load dump or EFT events. |
| Response time <1.0ps | Fast enough to suppress ESD events (IEC 61000-4-2) before damage occurs to sensitive analog or digital inputs. |
| Moisture sensitivity level 1 | Enables standard SMT reflow without baking; eliminates production delays and moisture-related popcorning risk. |
| Meets ISO 7637-2 Pulse 1/2a/2b/3a/3b | Confirms compliance with automotive transient immunity standards required for OEM Tier-1 supplier BOMs. |
Applications
| Automotive CAN Bus Protection | LED Headlamp Driver Input Protection |
|---|---|
Use Scenario: Protecting CAN transceivers (e.g., TJA1042, SN65HVD230) from load dump, jump-start, and inductive switching transients in vehicle networks. IC Role / Device Role / Timing Role: Unidirectional TVS placed between CAN_H/CAN_L lines and chassis ground to clamp common-mode surges while preserving signal integrity. Use Value: Limits voltage excursion to ≤10.3V during 800A pulses, preventing latch-up or permanent damage to transceiver I/O cells rated for ±40V max. |
Use Scenario: Safeguarding buck controller ICs (e.g., LM5164, MPQ4312) and MOSFET gate drivers in adaptive LED headlamps exposed to alternator ripple and relay bounce. IC Role / Device Role / Timing Role: Placed across input capacitor on 12V supply rail to absorb repetitive 100ns–1ms transients generated by PWM dimming and relay switching. Use Value: Withstands ≥1000 surges at 800A without parameter shift, ensuring long-term reliability in harsh under-hood environments. |
| Industrial PLC Digital Input Protection | Automotive Body Control Module (BCM) Power Rail |
Use Scenario: Shielding optocoupler inputs and microcontroller GPIOs on 24V industrial PLC cards from field-wiring induced surges and EFT bursts. IC Role / Device Role / Timing Role: Connected anode-to-ground, cathode-to-signal line to provide low-clamp protection for 24V logic inputs compliant with IEC 61000-4-4/5. Use Value: Delivers 600W peak power handling with <1µA leakage at 24V, minimizing standby current draw and false triggering in high-noise factory settings. |
Use Scenario: Securing 5V/3.3V LDO outputs powering MCU, CAN, LIN, and sensor interfaces in BCMs subjected to battery disconnection and alternator regulation faults. IC Role / Device Role / Timing Role: Positioned downstream of main 12V input filter to protect secondary rails from coupled transients propagating through PMICs or discrete regulators. Use Value: Maintains stable clamping at 10.3V even after repeated 800A surges, preventing brownout resets and communication loss during vehicle cranking. |
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 SMAJ6.0A | Same DO-214AC (SMA) package; slightly higher VBR min (6.67V vs. 6.67V), identical VC (10.3V), but lower PPK (400W vs. 600W). | Not AEC-Q101 qualified; suitable for industrial/commercial use only. | Select when cost sensitivity outweighs automotive qualification and 600W surge margin is not required. |
| ON Semiconductor SMBJ6.0A | Identical electrical specs (VWM=6.0V, VBR=6.67–7.37V, VC=10.3V), same DO-214AA package, AEC-Q101 qualified, but higher ID (5µA vs. <1µA) at VWM. | Higher leakage may impact ultra-low-power always-on circuits (e.g., keyless entry receivers). | Prefer when second-source assurance is needed and leakage budget allows up to 5µA. |
Compared with SMBJ6.0AH, SMAJ6.0A offers lower surge capacity and no automotive qualification, while SMBJ6.0A matches performance but trades off leakage for broader supply chain availability - making SMBJ6.0AH optimal where AEC-Q101 compliance and sub-1µA leakage are mandatory.
Availability
SMBJ6.0AH is available at Aetrix Electronics and suitable for automotive ECU design, LED lighting systems, and industrial PLC development requiring stable component supply with full traceability and lifecycle management.
Supply support for SMBJ6.0AH 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 validation capability.
The SMBJH series was developed specifically for automotive and industrial transient suppression, emphasizing robustness against ISO 7637-2 pulses, low leakage, and high-reliability packaging for automated SMT assembly.
FAQ
What is the maximum clamping voltage of SMBJ6.0AH under a standard 10/1000µs surge?
The SMBJ6.0AH has a maximum clamping voltage (VC) of 10.3 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 confirmed in the official Taiwan Semiconductor datasheet revision A2102 - ensuring predictable protection for downstream components such as CAN transceivers and microcontrollers.
Is SMBJ6.0AH qualified for automotive applications?
Yes, SMBJ6.0AH is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements. It also passes JESD201 Class 2 whisker testing and is rated for operation from –55°C to +150°C - making SMBJ6.0AH suitable for under-hood and body-control module applications in passenger vehicles and commercial vehicles.
What is the polarity configuration of SMBJ6.0AH, and how is it marked?
SMBJ6.0AH is a unidirectional TVS diode with cathode indicated by a band on the DO-214AA (SMB) package body. The cathode terminal connects to the protected line (e.g., 12V rail or CAN_H), while the anode connects to ground - enabling precise clamping only during reverse overvoltage events without forward conduction interference.
How does SMBJ6.0AH compare to SMBJ6.0A in terms of leakage current?
SMBJ6.0AH specifies maximum blocking leakage current (ID) of <1 µA at its 6.0 V working stand-off voltage, whereas the non-AH variant SMBJ6.0A allows up to 5 µA. This lower leakage makes SMBJ6.0AH preferable in battery-powered automotive modules where standby current must be minimized to extend service life.
Can SMBJ6.0AH be used in bidirectional configurations?
No - SMBJ6.0AH is strictly unidirectional. For bidirectional protection at the same 6.0 V stand-off, Taiwan Semiconductor offers SMBJ6.0CAH (with CAH suffix), which provides symmetrical clamping in both polarities and shares identical VWM, VBR, and VC specs - but requires verification of circuit topology compatibility before substitution.
SMBJ6.0AH 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6V
- Voltage - Breakdown (Min):
- 6.67V
- Voltage - Clamping (Max) @ Ipp:
- 10.3V
- Current - Peak Pulse (10/1000µs):
- 61A
- 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)
SMBJ6.0AH FAQ
1.How can I place an order for SMBJ6.0AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.0AH 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 SMBJ6.0AH reliable?
The price and inventory of SMBJ6.0AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ6.0AH is usually 5 days.
3.What payment methods are accepted for SMBJ6.0AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.0AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.0AH?
SMBJ6.0AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.0AH 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 SMBJ6.0AH?
For technical support, including SMBJ6.0AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.0AH requirements.
6.How does Aetrix verify that SMBJ6.0AH is sourced from the original manufacturer or authorized distributors?
All SMBJ6.0AH 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 SMBJ6.0AH meets industry standards.
7.What is the process for return or replacement of SMBJ6.0AH?
All SMBJ6.0AH units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.0AH, 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 SMBJ6.0AH part is unused and in its original packaging.
Return procedure for SMBJ6.0AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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