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Taiwan Semiconductor Corporation SMB10J22AH
- Part No.:
- SMB10J22AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J22AH.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,979
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Product details
Overview
SMB10J22AH from Taiwan Semiconductor is a unidirectional 1000W transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with 22V stand-off voltage (VWM), 24.4–26.9V breakdown voltage (VBR), and 35.5V clamping voltage (VC) at 28.2A peak pulse current - designed for automotive-grade ESD and load-dump protection in lighting control and power supply input stages.
For engineers reviewing the SMB10J22AH datasheet, SMB10J22AH pinout, SMB10J22AH application, or SMB10J22AH equivalent, key selection criteria include its AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, 1.0ps response time, 175°C max junction temperature, and unidirectional configuration with cathode band marking.
Technical Context
The SMB10J22AH employs a glass-passivated silicon junction to achieve fast transient suppression with sub-nanosecond response and stable clamping under repetitive surge conditions. Its thermal design supports 20°C/W junction-to-lead resistance and operates across –55°C to +175°C ambient range.
As a unidirectional TVS, it conducts only in reverse bias during overvoltage events, blocking forward current up to 3.5V at 50A while maintaining <1µA leakage at 22V - enabling robust protection without interfering with normal DC operation in 24V automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR @ IT=1mA | 24.4–26.9 V - Verified breakdown threshold ensuring reliable turn-on during transients |
| VC @ IPPM=28.2A | 35.5 V - Clamped voltage limiting downstream circuit stress during 10/1000µs surge |
| PPK | 1000 W - Peak pulse power handling per single 1ms transient per Fig. 3 |
| TJ max | +175 °C - Enables placement near heat-generating components in engine bay modules |
| Response time | <1.0 ps - Sub-picosecond junction response ensures protection before IC damage occurs |
| Leakage @ VWM | <1 µA - Negligible standby current draw in always-on vehicle subsystems |
Pinout & Package
DO-214AA (SMB) surface-mount package: molded epoxy case rated UL 94V-0, matte tin-plated leads compliant with J-STD-002 solderability, polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or low-side return path in unidirectional clamp configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 24V rail); cathode band marks this terminal physically |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood use including temperature cycling, mechanical shock, and humidity exposure |
| Glass passivated junction | Ensures long-term reliability and stable VBR drift under thermal stress and humidity |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect/connect), and Pulse 3a/3b (switching noise) immunity requirements |
| Moisture sensitivity level 1 | Zero bake requirement prior to reflow; compatible with standard SMT assembly lines |
| Halogen-free construction | Complies with IEC 61249-2-21, supporting RoHS and ELV directive compliance in vehicle platforms |
Applications
| Automotive Lighting Control | 24V Power Supply Input Protection |
|---|---|
Use Scenario: Protecting LED driver ICs from load-dump transients during headlamp switching in 24V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC converter input. Use Value: Limits clamped voltage to 35.5V during 1000W surges, preventing latch-up or gate oxide rupture in buck controller ICs. | Use Scenario: Safeguarding CAN transceiver power pins against ISO 7637-2 Pulse 1 and Pulse 2b events in body control modules. IC Role / Device Role / Timing Role: Primary overvoltage clamp on VCC rail upstream of LDO regulator. Use Value: Sub-1ps response ensures clamping activation before 12V-to-24V transients exceed 40V rating of downstream regulators. |
| Industrial Motor Drive Gate Driver Protection | Commercial HVAC Blower Circuit Protection |
Use Scenario: Shielding high-side gate drivers from inductive kickback when driving brushed DC motors in factory automation. IC Role / Device Role / Timing Role: Reverse-biased TVS across gate driver supply rails (VB–VSS). Use Value: 20°C/W RθJL enables effective heat transfer to PCB copper, sustaining repeated 8.3ms half-sine surges up to 100A IFSM. | Use Scenario: Preventing microcontroller reset during blower motor turn-off in rooftop HVAC units. IC Role / Device Role / Timing Role: Standoff-rated TVS on 24V auxiliary supply feeding MCU and sensor interface. Use Value: 22V VWM allows full 24V nominal operation while rejecting >35V spikes from relay coil collapse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | Same DO-214AA package, 22V VWM, but lower PPK = 600W and higher VC = 36.5V at 16.4A | Not AEC-Q101 qualified; lacks ISO 7637-2 certification | Acceptable for non-automotive industrial use where 1000W surge margin is not required |
| 1.5SMC22A | Higher PPK = 1500W, same VWM/VBR, but larger DO-214AB (SMC) package and 30°C/W RθJA | Requires PCB layout change; not drop-in compatible due to footprint mismatch | Preferred when higher surge margin is needed and board space permits larger package |
Compared with SMBJ22A and 1.5SMC22A, the SMB10J22AH uniquely delivers AEC-Q101 qualification, ISO 7637-2 compliance, and 1000W capability in the compact DO-214AA footprint - making it optimal for space-constrained automotive modules requiring certified transient immunity.
Availability
SMB10J22AH is available at Aetrix Electronics and suitable for automotive lighting control, 24V power supply input protection, and industrial motor drive gate driver protection requiring stable component supply across production lifecycles.
Supply support for SMB10J22AH 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, serving automotive, industrial, and consumer markets since 1979.
The SMB10JxxAH series was developed specifically for AEC-Q101-compliant transient suppression in 12V/24V automotive electrical systems, emphasizing reliability under harsh thermal and electromagnetic conditions.
FAQ
What is the maximum clamping voltage of SMB10J22AH at its rated peak pulse current?
The SMB10J22AH has a maximum clamping voltage (VC) of 35.5 V at 28.2 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per JEDEC standards and ensures downstream ICs remain within safe operating voltage limits during ISO 7637-2 Pulse 1 and Pulse 2b events. The SMB10J22AH maintains this clamping performance across its full operating temperature range.
Is SMB10J22AH suitable for bidirectional transient protection?
No, SMB10J22AH is a unidirectional TVS diode intended for reverse-bias clamping only. For bidirectional protection, the SMB10J22CAH variant must be used - it features symmetrical breakdown in both polarities and is marked with "LXC" code. Using SMB10J22AH in bidirectional applications risks forward conduction failure during positive transients.
Does SMB10J22AH require special handling during PCB assembly?
No, SMB10J22AH has Moisture Sensitivity Level 1 per J-STD-020, meaning it can be stored indefinitely at ≤30°C/60% RH and placed directly into standard lead-free reflow profiles without baking. Its matte tin-plated leads meet J-STD-002 for solderability, and the DO-214AA package supports automated pick-and-place with standard nozzle settings.
How does SMB10J22AH perform under repeated surge stress?
The SMB10J22AH is rated for non-repetitive 1ms pulses per Fig. 3, but its glass-passivated junction and 175°C TJ max enable robust endurance under intermittent surges typical in automotive environments. Derating curves (Fig. 2) show 80% peak power retention at 75°C ambient, supporting reliable operation in under-hood modules with proper PCB copper thermal relief.
What is the marking code for SMB10J22AH on the device body?
The SMB10J22AH is marked with "1LX" on the cathode band side of the DO-214AA package. This 3-character code identifies the 22V stand-off version within the SMB10JxxAH family and distinguishes it from bidirectional variants (e.g., "LXC" for SMB10J22CAH). The marking complies with JEDEC standards and is laser-etched for readability post-reflow.
SMB10J22AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMB10J
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 28.2A
- Power - Peak Pulse:
- 1000W (1kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J22AH FAQ
1.How can I place an order for SMB10J22AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J22AH 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 SMB10J22AH reliable?
The price and inventory of SMB10J22AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J22AH is usually 5 days.
3.What payment methods are accepted for SMB10J22AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J22AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J22AH?
SMB10J22AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J22AH 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 SMB10J22AH?
For technical support, including SMB10J22AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J22AH requirements.
6.How does Aetrix verify that SMB10J22AH is sourced from the original manufacturer or authorized distributors?
All SMB10J22AH 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 SMB10J22AH meets industry standards.
7.What is the process for return or replacement of SMB10J22AH?
All SMB10J22AH units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J22AH, 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 SMB10J22AH part is unused and in its original packaging.
Return procedure for SMB10J22AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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