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Taiwan Semiconductor Corporation SMBJ100AH
- Part No.:
- SMBJ100AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ100AH.pdf
- Description:
- TVS DIODE 100VWM 162VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,630
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Product details
Overview
SMBJ100AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, rated for 600W peak pulse power, 100V working stand-off voltage (VWM), and clamps to ≤162V at 3.8A peak impulse current (IPP). It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMBJ100AH datasheet, SMBJ100AH pinout, SMBJ100AH application, or SMBJ100AH equivalent, key selection criteria include its AEC-Q101 qualification, <1.0ps response time, <1μA leakage above 10V, 150°C max junction temperature, and compliance with RoHS and halogen-free standards per IEC 61249-2-21.
Technical Context
The SMBJ100AH uses a glass-passivated silicon junction optimized for fast transient suppression in 12V/24V automotive and industrial systems. Its unidirectional configuration provides forward conduction capability with VF = 5.0V at 50A, enabling use in DC power line protection where reverse polarity is not expected.
Thermal performance is defined by RθJC = 10°C/W and RθJA = 55°C/W, supporting operation up to 150°C junction temperature. It meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, ensuring robustness in automated SMT assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - Maximum continuous DC or RMS voltage the device blocks without clamping |
| VBR min/max | 111 V / 123 V @ 1 mA - Breakdown occurs within this range, defining turn-on threshold |
| VC @ IPP | ≤162 V @ 3.8 A - Clamping voltage during 10/1000µs surge, limiting downstream voltage stress |
| PPK | 600 W - Peak pulse power handling per single 10/1000µs transient, derated above 25°C |
| ID @ VWM | ≤1 µA - Low leakage ensures minimal standby power loss in high-impedance circuits |
| Response time | <1.0 ps - Enables suppression of ESD and fast electrical fast transients before IC damage occurs |
| TJ max | +150 °C - Supports under-hood automotive environments and high-power industrial enclosures |
Pinout & Package
DO-214AA (SMB) surface-mount package with matte tin-plated leads, UL 94V-0 molding compound, and cathode band marking for polarity identification. Weight: 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to protected circuit ground or low-side return path in unidirectional configuration |
| Cathode | Transient current sink | Connected to power rail (e.g., battery+, load switch output); clamps overvoltage to this node |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Glass passivated junction | Enhances long-term stability and moisture resistance vs. epoxy-passivated alternatives |
| ISO 7637-2 compliance | Withstands standardized automotive transient pulses (Pulse 1/2a/2b/3a/3b) without degradation |
| Fast response <1.0ps | Prevents voltage overshoot beyond safe limits for 3.3V/5V logic and MCU I/O pins |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally compliant manufacturing |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: 12V/24V battery-fed ECUs exposed to load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and bulk capacitor to clamp surges before they reach LDOs and microcontrollers. Use Value: Limits voltage to ≤162V during 3.8A transients, preventing latch-up or gate oxide rupture in downstream semiconductors. | Use Scenario: Digital input modules receiving 24V DC signals from field sensors in factory automation. IC Role / Device Role / Timing Role: Standoff protector on each input channel to absorb EFT bursts and inductive kickback from solenoid drivers. Use Value: Maintains signal integrity by suppressing >1kV EFT events while adding <1µA leakage, avoiding false triggering. |
| LED Driver Overvoltage Clamp | DC-DC Converter Input Stage |
Use Scenario: Constant-current LED drivers in commercial lighting subjected to lightning-induced surges on AC/DC front-ends. IC Role / Device Role / Timing Role: Primary transient clamp on the DC bus feeding the buck controller, placed upstream of input capacitors. Use Value: Absorbs 600W pulses without failure, preserving driver IC lifetime and meeting IEC 61000-4-5 Level 3 immunity requirements. | Use Scenario: 48V-to-12V isolated DC-DC converters in telecom power supplies experiencing switching noise and backfeed transients. IC Role / Device Role / Timing Role: Input-side TVS across primary-side bulk capacitor to limit reflected surge energy into transformer windings. Use Value: Clamps to 162V before MOSFET drain-source breakdown, eliminating need for oversized primary FETs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100A | Same VWM (100V), but VBR min/max = 111V/123V vs. SMBJ100AH's 111V/123V; identical clamping (162V @ 3.8A); non-AEC-Q101 rated | Lacks automotive qualification; suitable only for industrial/commercial designs without AEC-Q101 requirement | Select SMBJ100A if AEC-Q101 is not mandated and cost sensitivity outweighs qualification assurance. |
| SAC100 | Same VWM (100V), but lower PPK = 400W; VC = 165V @ 2.5A; no AEC-Q101 rating; different package (DO-214AB) | Lower surge capacity limits use to less severe transient environments; incompatible footprint requires PCB redesign | Choose SAC100 only for space-constrained layouts accepting reduced 400W rating and non-automotive qualification. |
Compared with SMBJ100A and SAC100, SMBJ100AH delivers certified automotive reliability, full 600W surge headroom, and DO-214AA compatibility-making it the preferred choice for safety-critical 12V/24V systems requiring zero layout change and guaranteed transient margin.
Availability
SMBJ100AH is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC input protection, LED driver overvoltage clamping, and DC-DC converter input stage protection requiring stable component supply across production lifecycles.
Supply support for SMBJ100AH 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 transient suppression, targeting 12V/24V power networks where fast response, low leakage, and high surge robustness are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ100AH under standard test conditions?
The SMBJ100AH has a maximum clamping voltage (VC) of 162 V when subjected to a 10/1000 µs surge waveform at 3.8 A peak impulse current (IPP), as specified in the Taiwan Semiconductor datasheet revision A2102. This value defines the upper voltage limit imposed on protected circuitry during transient events and is measured at TA = 25°C. The SMBJ100AH maintains this clamping performance across its full operating temperature range.
Is SMBJ100AH suitable for bidirectional transient protection?
No, SMBJ100AH is a unidirectional TVS diode and is not rated for bidirectional operation. Its electrical characteristics-including forward voltage (VF = 5.0 V @ 50 A) and cathode-band polarity marking-are defined only for unidirectional surge suppression. For bidirectional applications, Taiwan Semiconductor specifies parts with "CH" or "CAH" suffixes (e.g., SMBJ100CH), which have symmetrical breakdown in both directions. Using SMBJ100AH in reverse-biased configurations may result in premature failure or undefined clamping behavior.
Does SMBJ100AH meet automotive qualification standards?
Yes, SMBJ100AH is explicitly qualified to AEC-Q101 Rev D for stress testing including HTGB, HTRB, TCT, and ESD. It also complies with ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive transient immunity and meets J-STD-020 Moisture Sensitivity Level 1 for reflow compatibility. These qualifications are documented in Taiwan Semiconductor's official SMBJH series datasheet (Version A2102) and confirmed on authorized distributor pages such as Digi-Key and Mouser.
What is the thermal resistance from junction to ambient for SMBJ100AH?
The SMBJ100AH has a junction-to-ambient thermal resistance (RθJA) of 55°C/W under standard JEDEC test conditions (on FR-4 board with 1 in² copper pad). This value assumes natural convection and is used to estimate junction temperature rise under steady-state power dissipation. For accurate thermal design, engineers must apply derating curves from Figure 2 of the SMBJH datasheet when ambient temperatures exceed 25°C or when multiple devices share thermal mass.
How does SMBJ100AH differ from SMBJ100H in terms of electrical performance?
SMBJ100AH offers tighter breakdown voltage tolerance (111–123 V) compared to SMBJ100H (111–136 V), resulting in more consistent clamping onset. Both share identical VWM (100 V), PPK (600 W), and VC (162 V @ 3.8 A), but SMBJ100AH's lower VBR max improves predictability in precision clamp designs. Additionally, SMBJ100AH is AEC-Q101 qualified, whereas SMBJ100H is not-making SMBJ100AH the only option for automotive applications requiring formal qualification. The SMBJ100AH marking code is "NZ", while SMBJ100H is "NY".
SMBJ100AH 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):
- 100V
- Voltage - Breakdown (Min):
- 111V
- Voltage - Clamping (Max) @ Ipp:
- 162V
- Current - Peak Pulse (10/1000µs):
- 3.8A
- 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)
SMBJ100AH FAQ
1.How can I place an order for SMBJ100AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ100AH 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 SMBJ100AH reliable?
The price and inventory of SMBJ100AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ100AH is usually 5 days.
3.What payment methods are accepted for SMBJ100AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ100AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ100AH?
SMBJ100AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ100AH 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 SMBJ100AH?
For technical support, including SMBJ100AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ100AH requirements.
6.How does Aetrix verify that SMBJ100AH is sourced from the original manufacturer or authorized distributors?
All SMBJ100AH 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 SMBJ100AH meets industry standards.
7.What is the process for return or replacement of SMBJ100AH?
All SMBJ100AH units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ100AH, 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 SMBJ100AH part is unused and in its original packaging.
Return procedure for SMBJ100AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ100AH Tags
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