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Taiwan Semiconductor Corporation 1.5SMC24CAH
- Part No.:
- 1.5SMC24CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC24CAH.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,335
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Product details
Overview
1.5SMC24CAH from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with breakdown voltage 22.8–25.2 V at 1 mA test current, working stand-off voltage 20.5 V, clamping voltage 33.2 V at 47 A peak pulse current, and leakage current <1 µA at rated VWM. It protects automotive and industrial power rails against ESD, load dump, and lightning-induced transients.
For engineers reviewing the 1.5SMC24CAH datasheet, 1.5SMC24CAH pinout, 1.5SMC24CAH application, or 1.5SMC24CAH equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, fast sub-1 ps response, and thermal resistance of 15 °C/W junction-to-case.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for high-energy transient suppression in bidirectional signal and power lines. Its symmetrical I-V characteristics enable identical clamping performance in both polarities, supporting robust protection without polarity-sensitive layout constraints.
The device operates across –55 °C to +150 °C junction temperature range, with 50 °C/W junction-to-ambient thermal resistance and 15 °C/W junction-to-case resistance. It meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity requirements for automated SMT assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 22.8 V / 25.2 V - ensures reliable conduction onset above 20.5 V operating rail while avoiding false triggering |
| VWM | 20.5 V - maximum continuous DC or RMS voltage the device blocks without significant leakage |
| VC @ IPPM | 33.2 V at 47 A - limits downstream voltage stress during 10/1000 µs surge events |
| PPK | 1500 W - peak pulse power handling per single 1 ms transient per Fig.5 waveform |
| IR @ VWM | <1 µA - negligible standby power loss and minimal impact on high-impedance sensing nodes |
| TJ max | +150 °C - supports under-hood automotive and industrial environments without derating |
| Response time | <1.0 ps - enables effective suppression of nanosecond-scale ESD and switching transients |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, bidirectional configuration with cathode band omitted (symmetrical terminals). Matte tin-plated leads, RoHS and halogen-free compliant, UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient conduction path | No polarity marking required; either terminal serves as anode or cathode depending on transient polarity |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD HBM/MM |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load disconnect), Pulse 2a/2b (battery interruption), and Pulse 3a/3b (switching noise) waveforms |
| Glass passivated junction | Enhances long-term reliability and stability of VBR under thermal cycling and humidity exposure |
| Fast response <1 ps | Clamps transients before sensitive ICs experience overvoltage damage, critical for CAN, LIN, and sensor interfaces |
| Level 1 MSL | Zero bake requirement prior to reflow; compatible with standard lead-free SMT processes without moisture-related popcorning |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 24 V battery-fed control modules exposed to load dump and jump-start surges. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed at module input to limit line voltage to ≤33.2 V during transients. Use Value: Prevents damage to upstream DC-DC controllers and downstream microcontrollers by absorbing up to 1500 W of surge energy. |
Use Scenario: 4–20 mA current loop sensors in factory automation subject to ESD and cable coupling. IC Role / Device Role / Timing Role: Differential TVS pair across loop terminals to shunt common-mode transients before they reach analog front-end. Use Value: Maintains signal integrity with <1 µA leakage at 20.5 V, enabling accurate low-current measurement without offset error. |
| Telecom Line Card Surge Protection | Renewable Energy Inverter DC Link |
Use Scenario: Ethernet PHY or RS-485 transceivers connected to outdoor cabling vulnerable to lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional TVS on data lines referenced to local ground, clamping differential and common-mode spikes. Use Value: Sub-1 ps response ensures clamping occurs before transceiver ESD structures fail, preserving communication uptime. |
Use Scenario: DC bus between PV array and inverter where voltage can spike during rapid irradiance changes or grid faults. IC Role / Device Role / Timing Role: Parallel-connected TVS across DC link capacitors to clamp overvoltage transients exceeding 20.5 V. Use Value: 1500 W peak power rating handles multi-cycle surges without degradation, extending capacitor and IGBT lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA | Lower peak power (600 W), same DO-214AA package, VC = 38.9 V at 15.4 A | Not suitable for ISO 7637-2 Pulse 1 or high-energy lightning events requiring ≥1500 W | Select only for space-constrained designs where 600 W surge capacity suffices and lower clamping voltage is not required |
| 1.5KE24CA | Through-hole DO-15 package, same 1500 W rating, VC = 36.0 V at 41.7 A, no AEC-Q101 qualification | Lacks automotive qualification and SMT compatibility; unsuitable for automated production or under-hood use | Choose only for legacy through-hole designs or prototyping where reflow compatibility and automotive validation are not required |
Compared with SMBJ24CA and 1.5KE24CA, the 1.5SMC24CAH delivers higher surge robustness in an AEC-Q101-qualified SMT package with tighter VBR tolerance and lower clamping voltage-critical for protecting modern 24 V automotive ECUs and industrial PLC I/O modules.
Availability
1.5SMC24CAH is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, telecom line card surge protection, and renewable energy inverter DC link applications requiring stable component supply and full AEC-Q101 traceability.
Supply support for 1.5SMC24CAH 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, rectifiers, and MOSFETs, with global manufacturing and quality certifications including IATF 16949.
The 1.5SMCxxCAH series is part of TSC's AEC-Q101-qualified surface-mount TVS portfolio, designed specifically for automotive and industrial systems demanding high-reliability transient immunity in compact SMT form factors.
FAQ
What is the clamping voltage of the 1.5SMC24CAH under a 10/1000 µs surge?
The 1.5SMC24CAH has a maximum clamping voltage (VC) of 33.2 V when subjected to a 47 A peak pulse current with 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The 1.5SMC24CAH maintains this clamping performance symmetrically in both directions due to its bidirectional construction.
Is the 1.5SMC24CAH qualified for automotive use?
Yes, the 1.5SMC24CAH is AEC-Q101 qualified and tested for automotive-grade reliability, including high-temperature operating life, temperature cycling, and ESD robustness. It also meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements-making it suitable for engine control units, body electronics, and ADAS power supplies where transient immunity is critical. The 1.5SMC24CAH is manufactured and tested to IATF 16949 standards.
How does the 1.5SMC24CAH differ from unidirectional variants like 1.5SMC24CH?
The 1.5SMC24CAH is bidirectional, providing symmetrical clamping in both voltage polarities, while the 1.5SMC24CH is unidirectional and requires correct polarity orientation during placement. The 1.5SMC24CAH has no cathode band marking and supports AC-coupled or floating-line applications such as RS-485 buses or transformer-isolated power inputs-where polarity ambiguity exists. Its VBR range (22.8–25.2 V) and VC (33.2 V) apply identically in either direction.
What is the maximum steady-state power dissipation of the 1.5SMC24CAH?
The 1.5SMC24CAH has a steady-state power dissipation (PD) of 6.5 W at 25 °C ambient temperature. This rating applies only to continuous DC or low-frequency AC conditions-not transient events-and must be derated linearly above 25 °C using the 50 °C/W junction-to-ambient thermal resistance. For typical surge protection use, the 1500 W peak pulse rating dominates design considerations, not PD.
Does the 1.5SMC24CAH require special PCB layout considerations?
No special layout is needed beyond standard high-current TVS practices: short, wide traces to minimize inductance; direct connection to protected node and system ground; and avoidance of vias in the main current path. Because the 1.5SMC24CAH is bidirectional and packaged in DO-214AB (SMC), it eliminates polarity orientation errors. Its Level 1 MSL rating means no pre-bake is required, simplifying SMT assembly. The 1.5SMC24CAH's thermal resistance (15 °C/W junction-to-case) supports efficient heat transfer to copper pour or heatsink pads.
1.5SMC24CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 47A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC24CAH FAQ
1.How can I place an order for 1.5SMC24CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC24CAH 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 1.5SMC24CAH reliable?
The price and inventory of 1.5SMC24CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC24CAH is usually 5 days.
3.What payment methods are accepted for 1.5SMC24CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC24CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC24CAH?
1.5SMC24CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC24CAH 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 1.5SMC24CAH?
For technical support, including 1.5SMC24CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC24CAH requirements.
6.How does Aetrix verify that 1.5SMC24CAH is sourced from the original manufacturer or authorized distributors?
All 1.5SMC24CAH 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 1.5SMC24CAH meets industry standards.
7.What is the process for return or replacement of 1.5SMC24CAH?
All 1.5SMC24CAH units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC24CAH, 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 1.5SMC24CAH part is unused and in its original packaging.
Return procedure for 1.5SMC24CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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