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Taiwan Semiconductor Corporation SMB10J22CAH
- Part No.:
- SMB10J22CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J22CAH.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,055
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Product details
Overview
SMB10J22CAH from Taiwan Semiconductor is a bidirectional 1000W transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with 22V stand-off voltage (VWM), 24.4–26.9V breakdown voltage (VBR) at 1mA, 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 SMB10J22CAH datasheet, SMB10J22CAH pinout, SMB10J22CAH application, or SMB10J22CAH equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, 175°C max junction temperature, and DO-214AA mechanical compatibility with automated SMT placement.
Technical Context
This bidirectional TVS diode uses a glass-passivated junction to achieve sub-1ps response time and stable clamping under fast transients. It operates symmetrically across both polarities, enabling robust protection against reverse- and forward-polarity surges without external polarity management.
Rated for 1000W peak pulse power (tp = 1ms), it sustains 5W steady-state dissipation and handles 100A non-repetitive forward surge (8.3ms half-sine). Thermal resistance is 20°C/W junction-to-lead and 100°C/W junction-to-ambient, supporting high-reliability operation in constrained PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 24.4 V / 26.9 V at IT = 1 mA - ensures reliable turn-on within defined tolerance band |
| VC @ IPPM | 35.5 V at 28.2 A - limits downstream voltage stress during 10/1000μs transients |
| PPK | 1000 W - supports high-energy surge suppression per ISO 7637-2 Pulse 5a (load dump) |
| TJ max | +175 °C - enables deployment in under-hood automotive environments |
| Configuration | Bidirectional - protects against voltage transients of either polarity without external circuitry |
| Moisture Sensitivity | Level 1 (J-STD-020) - allows unlimited floor life and standard reflow without baking |
Pinout & Package
DO-214AA (SMB) surface-mount package: 2-terminal, cathode-band marked device with matte tin-plated leads; polarity indicated by molded cathode band (bidirectional symmetry means band denotes reference terminal, not unidirectional anode/cathode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (marked band) | Transient current return path | Both terminals function identically in bidirectional mode; band identifies standardized reference terminal for orientation during placement |
| Opposite terminal | Transient current return path | Electrically symmetrical to banded terminal; no functional distinction in CAH configuration |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and lighting modules |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity stress |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Meets OEM-level immunity requirements for battery-line and signal-line transient protection |
| Fast response time <1.0 ps | Clamps before sensitive ICs experience overvoltage damage during ESD or EFT events |
| Halogen-free & RoHS compliant | Supports environmental compliance for global automotive and industrial end markets |
Applications
| Automotive Lighting Control | Industrial Power Supply Input |
|---|---|
Use Scenario: Protecting LED driver ICs and MOSFET gate drivers from load-dump spikes and alternator ripple in headlamp modules. IC Role / Device Role: Bidirectional clamping element placed across DC input rails upstream of DC-DC converters. Use Value: Limits rail voltage to ≤35.5 V during 1000W transients, preventing latch-up or oxide breakdown in 30V-rated controllers. | Use Scenario: Safeguarding AC-DC rectifier outputs and PFC controller inputs against line-induced surges in factory automation PSUs. IC Role / Device Role: Primary transient shunt on bulk capacitor input node, coordinated with MOV and fuse. Use Value: Clamps 28.2A pulses at 35.5V while maintaining <1 µA leakage at 22V, minimizing standby loss. |
| Automotive Body Control Module (BCM) | ESD-Prone Sensor Interface |
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from cable discharge events in door module wiring harnesses. IC Role / Device Role: Localized bidirectional TVS on each protected signal line, mounted adjacent to connector. Use Value: Responds in <1 ps to ±8kV contact ESD (IEC 61000-4-2), limiting voltage excursion to safe levels for 5V-tolerant GPIO. | Use Scenario: Shielding CAN FD transceiver data lines and analog sensor front-ends from coupling-induced transients in vehicle chassis grounds. IC Role / Device Role: Low-capacitance (<100 pF typical) bidirectional clamp on differential pairs. Use Value: Delivers 35.5V clamping without distorting 5 Mbps CAN FD waveforms due to minimal parasitic loading. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CA | Same DO-214AA package, identical VWM/VBR/VC specs, but not AEC-Q101 qualified | Limited to industrial/commercial use; unsuitable for automotive production | Select SMBJ22CA only when AEC-Q101 is not required and cost sensitivity outweighs qualification needs |
| SMCJ22CA | DO-214AB (SMC) package, same electrical specs, higher thermal mass (RθJA = 40°C/W vs. 100°C/W) | Requires larger PCB footprint; better for sustained surge duty cycles but less space-efficient | Choose SMCJ22CA where board area permits and improved thermal performance justifies larger footprint |
Compared with SMBJ22CA and SMCJ22CA, SMB10J22CAH uniquely combines AEC-Q101 qualification, DO-214AA compactness, and full ISO 7637-2 compliance - making it the only drop-in option for automotive Tier-1 lighting and BCM designs requiring validated reliability and footprint constraints.
Availability
SMB10J22CAH is available at Aetrix Electronics and suitable for automotive lighting control, industrial power supply input protection, and body control module (BCM) designs requiring stable component supply, AEC-Q101 traceability, and ISO 7637-2 certified surge resilience.
Supply support for SMB10J22CAH 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 automotive-qualified power devices.
The SMB10JxxCAH series belongs to TSC's AEC-Q101-certified transient suppression portfolio, engineered specifically for automotive subsystems demanding high-energy clamping, low leakage, and zero-defect reliability in harsh thermal and electrical environments.
FAQ
What does the 'CAH' suffix indicate in SMB10J22CAH?
The 'CAH' suffix denotes a bidirectional configuration with AEC-Q101 qualification and halogen-free construction. Unlike unidirectional 'AH' variants, SMB10J22CAH provides symmetrical clamping for both positive and negative transients - essential for protecting differential buses and AC-coupled interfaces. This suffix also confirms compliance with J-STD-020 moisture sensitivity level 1 and RoHS directives. The 'C' explicitly signals bidirectionality in Taiwan Semiconductor's naming convention.
Is SMB10J22CAH compatible with lead-free reflow profiles?
Yes, SMB10J22CAH supports standard lead-free reflow soldering per J-STD-020. Its matte tin-plated leads are solderable per J-STD-002, and its moisture sensitivity level is rated Class 1 - meaning it can be stored indefinitely at ambient conditions without baking prior to assembly. The DO-214AA package withstands peak temperatures up to 260°C for 10 seconds, fully aligning with IPC/JEDEC J-STD-020D requirements for Pb-free processes.
How does SMB10J22CAH meet ISO 7637-2 Pulse 5a (load dump)?
SMB10J22CAH meets ISO 7637-2 Pulse 5a by clamping 1000W transients (approx. 100V/10A, 400ms) within its specified VC of 35.5V at 28.2A - when used with appropriate series impedance (e.g., 1–5Ω wire resistance or added Zener clamp coordination). Its 175°C TJ max and 20°C/W RθJL enable thermal survival during repetitive load-dump events, and its AEC-Q101 qualification includes extended lifetime testing under simulated Pulse 5a stress conditions.
Can SMB10J22CAH replace SMBJ22CA in existing designs?
SMB10J22CAH is mechanically and electrically pin-compatible with SMBJ22CA in DO-214AA packages, sharing identical VWM (22V), VBR (24.4–26.9V), and VC (35.5V) specifications. However, SMB10J22CAH adds AEC-Q101 qualification, ISO 7637-2 compliance, and tighter process controls - making it a direct upgrade for automotive applications. No PCB changes are needed, but qualification documentation and test reports must be updated to reflect the enhanced reliability grade.
What is the maximum allowable mounting density for SMB10J22CAH on a PCB?
SMB10J22CAH has no minimum spacing requirement beyond standard DO-214AA solder mask and clearance rules (0.25mm creepage/clearance). Its RθJA of 100°C/W assumes standard 1-inch² copper pad; doubling copper area reduces RθJA by ~20%. For high-density layouts, maintain ≥0.5mm edge-to-edge spacing between adjacent SMB10J22CAH units to avoid localized thermal accumulation during simultaneous surge events - verified per TSC's thermal derating curve (Fig. 2).
SMB10J22CAH 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:
- -
- Bidirectional Channels:
- 1
- 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)
SMB10J22CAH FAQ
1.How can I place an order for SMB10J22CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J22CAH 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 SMB10J22CAH reliable?
The price and inventory of SMB10J22CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J22CAH is usually 5 days.
3.What payment methods are accepted for SMB10J22CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J22CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J22CAH?
SMB10J22CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J22CAH 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 SMB10J22CAH?
For technical support, including SMB10J22CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J22CAH requirements.
6.How does Aetrix verify that SMB10J22CAH is sourced from the original manufacturer or authorized distributors?
All SMB10J22CAH 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 SMB10J22CAH meets industry standards.
7.What is the process for return or replacement of SMB10J22CAH?
All SMB10J22CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J22CAH, 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 SMB10J22CAH part is unused and in its original packaging.
Return procedure for SMB10J22CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J22CAH Tags
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