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Taiwan Semiconductor Corporation 1.5SMC180AH
- Part No.:
- 1.5SMC180AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC180AH.pdf
- Description:
- 1500W, 180V, 5%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:3,756
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Product details
Overview
1.5SMC180AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and signal interfaces. It features a 1500W peak pulse power rating, 180V breakdown voltage (171–189V), 154V working stand-off voltage, clamps to ≤246V at 6.4A peak impulse current, and operates across –55°C to +150°C junction temperature range - deployed in automotive power supply inputs and industrial I/O protection circuits.
For engineers reviewing the 1.5SMC180AH datasheet, 1.5SMC180AH pinout, 1.5SMC180AH application, or 1.5SMC180AH equivalent, key selection criteria include clamping voltage margin vs. protected IC VMAX, leakage current at operating bias, thermal resistance (RθJA = 50°C/W), AEC-Q101 qualification status, and DO-214AB mechanical compatibility with automated SMT assembly.
Technical Context
The 1.5SMC180AH uses a glass-passivated silicon junction optimized for fast transient response (<1.0 ps) and low leakage (<1 µA at 154V). Its unidirectional configuration provides asymmetric clamping-forward conduction only during reverse overvoltage events-making it suitable for DC rail protection where polarity is fixed and forward voltage drop must be minimized.
Thermally, it delivers 6.5W steady-state dissipation with RθJC = 15°C/W and RθJA = 50°C/W, enabling reliable operation under pulsed surge loads per ISO 7637-2 (Pulse 1/2a/2b/3a/3b) without derating below 125°C ambient. The DO-214AB package supports JEDEC-compliant reflow profiles and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 171 V / 189 V - ensures reliable triggering above system nominal voltage while avoiding false trips during transients |
| VWM | 154 V - maximum continuous reverse bias before leakage exceeds 1 µA, defining safe operating DC margin |
| VC @ IPPM | ≤246 V at 6.4 A - clamping voltage limits stress on downstream components during 10/1000 µs surge events |
| PPK | 1500 W - peak pulse power handling capability per single 1 ms waveform, compliant with IEC 61000-4-5 Level 4 |
| IR @ VWM | <1 µA - ultra-low reverse leakage preserves battery life and signal integrity in high-impedance monitoring paths |
| TJ max | +150 °C - enables use in under-hood automotive environments and enclosed industrial enclosures without forced cooling |
| RθJA | 50 °C/W - defines thermal rise under sustained power dissipation; requires ≥25 mm² copper pour for full-rated operation |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, unidirectional configuration with cathode band marking. Matte tin-plated leads, RoHS and halogen-free compliant, moisture sensitivity level 1 (J-STD-020).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | DC input or signal line side | Connected to protected circuit node; conducts during reverse overvoltage to shunt energy to ground |
| Cathode | Ground reference or return path | Marked by band; ties to system ground plane; establishes polarity-sensitive clamping direction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per stress test conditions |
| Glass passivated junction | Eliminates surface contamination risk and improves long-term stability of VBR under humidity and bias stress |
| ISO 7637-2 compliance | Withstands load-dump and inductive-switching transients (Pulse 1/2a/2b/3a/3b) without degradation in vehicle ECUs |
| Fast response time | <1.0 ps enables clamping before sensitive logic or analog circuitry experiences damaging overvoltage |
| Low clamping ratio (VC/VBR) | 1.37 (246 V / 180 V typical) - tighter than standard TVS diodes, reducing margin required between clamp and device VABS_MAX |
Applications
| Automotive Power Input Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: 12 V/24 V battery-fed control module exposed to alternator load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp reverse-polarity and high-voltage transients. Use Value: Limits peak voltage to ≤246 V during 10/1000 µs pulses, protecting upstream DC-DC converters and microcontroller power rails rated to 28 V absolute maximum. |
Use Scenario: 24 V digital input channel in programmable logic controller receiving signals from field sensors and switches. IC Role / Device Role / Timing Role: Standoff protection device mounted at connector entry point to absorb ESD and inductive kickback from solenoid drivers. Use Value: Sub-µA leakage at 154 V prevents false triggering in high-impedance sensing circuits; 1500 W rating handles repetitive switching transients without parametric shift. |
| Telecom Line Interface Protection | Renewable Energy Inverter DC Link Protection |
Use Scenario: RS-485 transceiver interface on outdoor telecom base station equipment subject to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level TVS on VCC rail and common-mode bus lines to back up primary gas discharge tube (GDT) protection. Use Value: Clamps within 1 ps to limit coupled energy into transceiver ICs; DO-214AB footprint allows dense layout near connectors without compromising creepage. |
Use Scenario: DC link between PV array and MPPT stage in solar microinverters, exposed to rapid voltage transients during grid fault recovery. IC Role / Device Role / Timing Role: High-power standoff suppressor across DC bus capacitors to prevent overvoltage failure during regenerative braking or islanding events. Use Value: 1500 W peak power rating sustains multiple 10/1000 µs surges at 171–189 V breakdown, maintaining bus stability without thermal runaway (TJ ≤ 150°C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180A | Same DO-214AA package; lower PPK = 600 W; VC = 292 V @ 2.1 A; higher clamping ratio | Not suitable for ISO 7637-2 Pulse 5a (load dump); limited to lower-energy ESD/signal-line use | Select only when surge energy is ≤600 W and board space restricts DO-214AB footprint |
| 1.5KE180A | Through-hole DO-201 package; identical electrical specs but incompatible with SMT assembly; RθJA ≈ 65°C/W | Requires manual soldering or wave soldering; unsuitable for high-density automated production | Choose only for legacy through-hole designs or prototyping where rework tolerance outweighs production efficiency |
Compared with SMBJ180A and 1.5KE180A, the 1.5SMC180AH offers superior surge handling (1500 W vs. 600 W/1500 W), lower clamping voltage (246 V vs. 292 V/246 V), and SMT-ready DO-214AB packaging - making it optimal for automotive and industrial modules requiring AEC-Q101 compliance and automated manufacturing scalability.
Availability
1.5SMC180AH is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and renewable energy inverters requiring stable component supply with full traceability and lifecycle management.
Supply support for 1.5SMC180AH 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 distribution and AEC-Q101 validation capabilities.
The 1.5SMC series was engineered specifically for high-reliability DC rail protection in automotive and industrial environments - emphasizing low leakage, tight VBR tolerance, and robust surge immunity per ISO 7637-2 and IEC 61000-4-5 standards.
FAQ
What is the breakdown voltage range for the 1.5SMC180AH?
The 1.5SMC180AH has a guaranteed breakdown voltage range of 171 V to 189 V at 1 mA test current, measured per ANSI/IEEE C62.35. This range ensures consistent triggering behavior across production lots and temperature extremes, supporting robust design margins in 180 V nominal systems.
Is the 1.5SMC180AH suitable for bidirectional transient suppression?
No - the 1.5SMC180AH is a unidirectional TVS diode intended for DC rail protection with defined polarity. For bidirectional applications, Taiwan Semiconductor specifies the 1.5SMC180CAH variant, which uses symmetrical breakdown characteristics and omits the cathode band marking.
Does the 1.5SMC180AH meet AEC-Q101 requirements for automotive use?
Yes - the 1.5SMC180AH is explicitly qualified to AEC-Q101 Rev D, covering stress tests including HTGB, H3TRB, temperature cycling, and ESD (HBM ≥ 8 kV, CDM ≥ 1 kV), confirming suitability for under-hood and body-control module applications.
What is the maximum clamping voltage of the 1.5SMC180AH under surge conditions?
The 1.5SMC180AH clamps to a maximum of 246 V when subjected to its rated 6.4 A peak impulse current (10/1000 µs waveform), as specified in the Electrical Characteristics table. This value defines the upper voltage limit imposed on protected circuitry during standardized surge events.
How does the 1.5SMC180AH compare to the 1.5SMC180H variant?
The 1.5SMC180AH offers tighter breakdown voltage tolerance (171–189 V) versus the 1.5SMC180H (162–198 V), resulting in more predictable clamping onset and reduced risk of premature conduction. Both share identical package, power rating, and thermal specs, but the "A" suffix denotes enhanced VBR consistency.
1.5SMC180AH 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 246V
- Current - Peak Pulse (10/1000µs):
- 6.4A
- 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)
1.5SMC180AH FAQ
1.How can I place an order for 1.5SMC180AH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC180AH 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 1.5SMC180AH reliable?
The price and inventory of 1.5SMC180AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC180AH is usually 5 days.
3.What payment methods are accepted for 1.5SMC180AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC180AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC180AH?
1.5SMC180AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC180AH 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 1.5SMC180AH?
For technical support, including 1.5SMC180AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC180AH requirements.
6.How does Aetrix verify that 1.5SMC180AH is sourced from the original manufacturer or authorized distributors?
All 1.5SMC180AH 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 1.5SMC180AH meets industry standards.
7.What is the process for return or replacement of 1.5SMC180AH?
All 1.5SMC180AH units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC180AH, 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 1.5SMC180AH part is unused and in its original packaging.
Return procedure for 1.5SMC180AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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