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Taiwan Semiconductor Corporation SMB10J24CAH
- Part No.:
- SMB10J24CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J24CAH.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,594
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Product details
Overview
SMB10J24CAH from Taiwan Semiconductor is a bidirectional 1000W transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with 24V standoff voltage (VWM), 26.7–29.5V breakdown voltage (VBR), and 38.9V clamping voltage (VC) at 25.7A peak pulse current - designed for automotive lighting and ESD protection of CAN/LIN bus interfaces.
For engineers reviewing the SMB10J24CAH datasheet, SMB10J24CAH pinout, SMB10J24CAH application, or SMB10J24CAH equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and 175°C maximum junction temperature for under-hood automotive use.
Technical Context
This bidirectional TVS diode uses a glass-passivated junction to achieve sub-1ps response time and robust clamping performance across repetitive transients. It operates within -55°C to +175°C junction range and supports unidirectional or bidirectional surge suppression without polarity dependency due to symmetrical VBR min/max tolerance (26.7–29.5V).
Thermal design is enabled by RθJL = 20°C/W and RθJA = 100°C/W ratings, allowing effective heat dissipation in high-density PCB layouts. Its DO-214AA package meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance requirements for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR @ IT=1mA | 26.7–29.5 V - Verified breakdown threshold ensuring reliable turn-on during transients |
| VC @ IPPM=25.7A | 38.9 V - Clamped voltage limiting downstream IC stress during 10/1000μs surge events |
| PPK | 1000 W - Peak pulse power handling per single 1ms transient per Fig. 3 |
| Junction Temp Range | -55°C to +175°C - Enables placement near heat sources in engine control units and lighting modules |
| Response Time | <1.0 ps - Fast enough to protect against ESD and fast electrical fast transients (EFT) |
| Standards Compliance | ISO 7637-2 (Pulse 1/2a/2b/3a/3b), AEC-Q101 - Validated for automotive electronics immunity testing |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode band marking; symmetrical bidirectional structure means both terminals serve identical roles in transient suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (marked band) | Bidirectional transient path | No polarity sensitivity - either terminal connects to protected line; band indicates conventional cathode orientation for uni-directional variants only |
| Case / Body | Thermal conduction path | Integral leadframe provides low RθJL = 20°C/W for efficient heat transfer to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and infotainment systems |
| Glass-passivated junction | Ensures stable VBR over lifetime and resistance to humidity-induced parameter drift |
| Moisture sensitivity level 1 | Enables standard SMT reflow without baking - compatible with automated assembly lines |
| UL 94V-0 molding compound | Self-extinguishing encapsulation meets automotive flame-retardancy requirements |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and eliminates whisker growth risk per JESD201 Class 2 |
Applications
| Automotive LED Headlamp Driver Protection | CAN Bus Transient Suppression |
|---|---|
Use Scenario: Protects LED driver ICs from load-dump and inductive switching spikes in 24V vehicle architectures. IC Role / Device Role: Bidirectional clamping element placed across power rail and ground near driver output stage. Use Value: Limits voltage to ≤38.9V during 1000W transients, preventing gate oxide damage to MOSFETs and overvoltage lockout in buck controllers. | Use Scenario: Shields CAN transceivers from ESD and coupled noise on differential bus lines. IC Role / Device Role: Common-mode TVS connected between CAN_H/CAN_L and chassis ground. Use Value: Sub-1ps response ensures clamping before transceiver input stages saturate, preserving signal integrity during ±8kV contact ESD per ISO 10605. |
| Industrial PLC Digital Input Protection | Smart Lighting Control Module ESD Guarding |
Use Scenario: Safeguards 24V digital input circuits against field-wiring induced surges and relay coil flyback. IC Role / Device Role: Parallel-connected TVS across optocoupler input or Schmitt trigger front-end. Use Value: Withstands repeated 10/1000μs pulses up to 1000W while maintaining VWM = 24V compatibility with industrial control logic levels. | Use Scenario: Prevents ESD damage to microcontroller GPIOs and wireless SoC RF sections in outdoor-rated luminaires. IC Role / Device Role: Localized TVS on each I/O line (e.g., DALI, 0–10V dimming, Zigbee antenna feedline). Use Value: Halogen-free, RoHS-compliant construction meets environmental mandates for public infrastructure lighting deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA | Same DO-214AA package, 24V VWM, but rated for 600W PPK (vs. 1000W for SMB10J24CAH) | Limited to lower-energy transients; insufficient for ISO 7637-2 Pulse 5a (load dump) | Select SMB10J24CAH when full 1000W surge margin is required in automotive power distribution nodes. |
| SMCJ24CA | Higher PPK = 1500W, same VWM/VC, but larger DO-214AB (SMC) package (7.11 × 6.22 mm vs. 4.57 × 3.94 mm) | Requires PCB area increase and may not fit space-constrained modules like LED drivers | Choose SMB10J24CAH where SMB footprint is mandatory and 1000W rating suffices for system-level test compliance. |
Compared with SMBJ24CA and SMCJ24CA, SMB10J24CAH uniquely delivers 1000W surge capability in the compact DO-214AA outline while maintaining AEC-Q101 and ISO 7637-2 certification - making it optimal for space-limited, high-reliability automotive and industrial control nodes requiring verified bidirectional clamping.
Availability
SMB10J24CAH is available at Aetrix Electronics and suitable for automotive lighting systems, CAN/LIN bus interfaces, industrial PLC inputs, and smart building control modules requiring stable component supply and long-term lifecycle support.
Supply support for SMB10J24CAH 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 harsh-environment automotive subsystems demanding high-power, fast-response, and thermally robust protection.
FAQ
What does the 'CAH' suffix indicate in SMB10J24CAH?
The 'CAH' suffix denotes a bidirectional configuration with AEC-Q101 qualification and halogen-free construction. Unlike unidirectional 'AH' variants, SMB10J24CAH provides symmetrical clamping for both polarities - essential for protecting differential buses like CAN or AC-coupled signal paths. This designation is confirmed in TSC's ordering information and electrical specifications table.
Is SMB10J24CAH compliant with ISO 7637-2 for automotive transient immunity?
Yes, SMB10J24CAH explicitly meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements as stated in its features list. Its 1000W peak power rating and 38.9V clamping voltage at 25.7A ensure sufficient margin to suppress these standardized transients without exceeding protected IC voltage tolerances.
What is the maximum junction temperature rating for SMB10J24CAH?
The maximum junction temperature (TJMAX) for SMB10J24CAH is +175°C, as specified in the Absolute Maximum Ratings table. This enables operation in high-temperature environments such as engine compartments or enclosed LED driver housings, provided thermal design accounts for RθJA = 100°C/W under natural convection.
Does SMB10J24CAH require special handling for moisture sensitivity?
No - SMB10J24CAH has Moisture Sensitivity Level (MSL) 1 per J-STD-020, meaning it can be stored indefinitely at ambient conditions and processed using standard SMT reflow profiles without pre-baking. This simplifies manufacturing integration and reduces line downtime versus higher-MSL components.
How does the clamping voltage of SMB10J24CAH compare to its standoff voltage?
SMB10J24CAH has a 24V standoff voltage (VWM) and clamps at 38.9V (VC) during a 25.7A transient - a 62% overvoltage margin. This ratio ensures protected ICs remain within absolute maximum ratings even during worst-case 1000W surges, unlike lower-clamp alternatives that may exceed safe operating limits under identical conditions.
SMB10J24CAH 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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 25.7A
- 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)
SMB10J24CAH FAQ
1.How can I place an order for SMB10J24CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J24CAH 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 SMB10J24CAH reliable?
The price and inventory of SMB10J24CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J24CAH is usually 5 days.
3.What payment methods are accepted for SMB10J24CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J24CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J24CAH?
SMB10J24CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J24CAH 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 SMB10J24CAH?
For technical support, including SMB10J24CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J24CAH requirements.
6.How does Aetrix verify that SMB10J24CAH is sourced from the original manufacturer or authorized distributors?
All SMB10J24CAH 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 SMB10J24CAH meets industry standards.
7.What is the process for return or replacement of SMB10J24CAH?
All SMB10J24CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J24CAH, 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 SMB10J24CAH part is unused and in its original packaging.
Return procedure for SMB10J24CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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