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Taiwan Semiconductor Corporation 1.5SMC75CAH
- Part No.:
- 1.5SMC75CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC75CAH.pdf
- Description:
- TVS DIODE 64.1VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,171
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Product details
Overview
1.5SMC75CAH from Taiwan Semiconductor is a bidirectional 75V transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 1500W peak pulse power, 64.1V working stand-off voltage, and 103V maximum clamping voltage at 15A peak impulse current. It provides ESD and surge protection for automotive power lines and industrial I/O interfaces.
For engineers reviewing the 1.5SMC75CAH datasheet, 1.5SMC75CAH pinout, 1.5SMC75CAH application, or 1.5SMC75CAH equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, <1.0ps response time, and 1μA leakage at 64.1V.
Technical Context
The 1.5SMC75CAH is a glass-passivated, bipolar junction TVS diode designed for unidirectional or bidirectional transient suppression without polarity dependence. Its breakdown voltage range is 71.3–78.8V at 1mA test current, with temperature coefficient of 0.105%/°C.
It operates across –55°C to +150°C junction temperature, features 50°C/W junction-to-ambient thermal resistance, and meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR Min/Max | 71.3V / 78.8V at 1mA - defines reliable conduction onset under surge conditions |
| VWM | 64.1V - maximum continuous reverse operating voltage before leakage exceeds 1μA |
| VC@IPPM | 103V at 15A - clamping voltage limiting downstream circuit stress during 10/1000μs transients |
| PPK | 1500W - peak pulse power handling per single 10/1000μs waveform per Fig.5 |
| IPPM | 15A - maximum non-repetitive peak surge current supported at VC |
| TJ Max | +150°C - enables operation in under-hood automotive and high-temperature industrial environments |
| Response Time | <1.0ps - ensures sub-nanosecond reaction to ESD and fast-rising transients |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, bidirectional configuration with cathode band omitted (symmetrical terminals).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Surge current path | Either terminal accepts transient energy in either polarity; no polarity marking required |
| Case (cathode band absent) | Thermal and mechanical interface | Exposed metal slug provides low-impedance thermal path to PCB copper; no electrical connection |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| ISO 7637-2 compliant | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) waveforms |
| Glass passivated junction | Enhances long-term stability and reduces parameter drift under humidity and thermal stress |
| Moisture sensitivity Level 1 | Zero bake requirement prior to reflow; compatible with standard SMT assembly processes |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Automotive Power Line Protection | Industrial PLC Digital I/O |
|---|---|
Use Scenario: Protecting 12V/24V battery-fed ECUs against load dump and alternator transients. IC Role / Device Role / Timing Role: Bidirectional TVS device placed at power entry point to clamp surges before they reach DC-DC converters and microcontrollers. Use Value: Limits voltage to ≤103V during 15A transients, preventing latch-up or permanent damage to downstream 3.3V/5V logic. | Use Scenario: Shielding 24V digital input modules in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff protector on dry-contact or optocoupler input channels exposed to long cable runs. Use Value: Maintains 64.1V working voltage margin while clamping lightning-induced spikes to safe levels within 1ps. |
| Telecom Interface Surge Suppression | Consumer Equipment ESD Hardening |
Use Scenario: Safeguarding RS-485 transceivers in outdoor base stations subjected to induced lightning surges. IC Role / Device Role / Timing Role: Primary-level TVS on differential bus lines, coordinated with secondary GDT or polymer PTC devices. Use Value: Delivers 1500W peak power absorption without degradation, preserving signal integrity up to 10Mbps. | Use Scenario: Adding robustness to USB-C or HDMI port power pins in set-top boxes and AV receivers. IC Role / Device Role / Timing Role: Secondary-side clamping element after common-mode chokes, targeting human-body-model (HBM) and IEC 61000-4-2 events. Use Value: Sub-1ps response ensures clamping occurs before ESD pulse couples into internal LDOs or USB PHYs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA | 600W rating, DO-214AA (SMB) package, 107V clamping at 8.3A | Lower power handling; suitable for space-constrained consumer designs with moderate surge exposure | Select when board area is limited and peak surge energy does not exceed 600W |
| SMCJ75CA | 1500W rating, same DO-214AB (SMC) package, 107V clamping at 14.3A | Nearly identical performance; minor VBR and VC variation due to process binning | Drop-in alternative if 1.5SMC75CAH lead time is constrained; verify layout compatibility |
Compared with SMBJ75CA and SMCJ75CA, the 1.5SMC75CAH offers identical 1500W rating and DO-214AB footprint but tighter VBR tolerance (71.3–78.8V vs. typical 72–80V), lower leakage (<1μA at 64.1V), and AEC-Q101 validation-making it preferred for automotive and industrial deployments requiring traceable qualification.
Availability
1.5SMC75CAH is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom infrastructure requiring stable component supply with full AEC-Q101 documentation and ISO 7637-2 compliance evidence.
Supply support for 1.5SMC75CAH 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, MOSFETs, and power management devices.
The 1.5SMCxxCAH series belongs to TSC's AEC-Q101-qualified surface-mount TVS platform, engineered specifically for robust transient immunity in automotive power distribution networks and industrial fieldbus interfaces.
FAQ
What is the breakdown voltage range of the 1.5SMC75CAH?
The 1.5SMC75CAH has a guaranteed breakdown voltage range of 71.3V to 78.8V at 1mA test current (VBR), measured per ANSI/IEEE C62.35 standards. This range ensures consistent turn-on behavior across temperature and production lots, directly supporting design margin calculations for 75V nominal systems.
Is the 1.5SMC75CAH suitable for automotive applications?
Yes, the 1.5SMC75CAH is AEC-Q101 qualified and tested to ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b waveforms-making it suitable for 12V/24V automotive power line protection. Its –55°C to +150°C operating range and glass-passivated junction further validate its use in engine control units and body electronics.
How does the 1.5SMC75CAH differ from unidirectional variants like 1.5SMC75CH?
The 1.5SMC75CAH is bidirectional and symmetrical, enabling protection against transients of either polarity without regard to orientation. In contrast, 1.5SMC75CH is unidirectional and requires correct anode/cathode placement. Both share identical VBR, VC, and PPK, but only the CAH version supports AC-coupled or floating-line applications.
What is the maximum clamping voltage of the 1.5SMC75CAH under surge conditions?
The 1.5SMC75CAH clamps to a maximum of 103V at 15A peak impulse current (IPPM) for a 10/1000μs waveform. This value is guaranteed across production lots and temperature, ensuring downstream ICs see no more than 103V during standardized surge events defined in IEC 61000-4-5.
Does the 1.5SMC75CAH require special PCB layout considerations?
Yes-the 1.5SMC75CAH should be placed as close as possible to the protected port with short, wide traces to minimize inductance. Its DO-214AB (SMC) package uses a thermal pad; recommended land pattern follows TSC's suggested pad layout with ≥25 mm² copper pour connected to both terminals for optimal heat dissipation during repetitive surges.
1.5SMC75CAH 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):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 15A
- 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)
1.5SMC75CAH FAQ
1.How can I place an order for 1.5SMC75CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC75CAH 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 1.5SMC75CAH reliable?
The price and inventory of 1.5SMC75CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC75CAH is usually 5 days.
3.What payment methods are accepted for 1.5SMC75CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC75CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC75CAH?
1.5SMC75CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC75CAH 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 1.5SMC75CAH?
For technical support, including 1.5SMC75CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC75CAH requirements.
6.How does Aetrix verify that 1.5SMC75CAH is sourced from the original manufacturer or authorized distributors?
All 1.5SMC75CAH 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 1.5SMC75CAH meets industry standards.
7.What is the process for return or replacement of 1.5SMC75CAH?
All 1.5SMC75CAH units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC75CAH, 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 1.5SMC75CAH part is unused and in its original packaging.
Return procedure for 1.5SMC75CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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