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Taiwan Semiconductor Corporation 2M180Z
- Part No.:
- 2M180Z
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
2M180Z.pdf
- Description:
- DIODE ZENER 180V 2W DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,168
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Product details
Overview
2M180Z from Taiwan Semiconductor is a 180 V, 2.8 mA Zener diode in DO-204AC (DO-15) package, rated for 2 W steady-state power dissipation and operating junction temperature up to +175°C. It delivers 725 Ω maximum zener impedance at test current, with leakage current ≤0.5 µA at 136.8 V reverse voltage, suitable for precision voltage regulation and overvoltage protection in automotive and industrial power rails.
For engineers reviewing the 2M180Z datasheet, 2M180Z pinout, 2M180Z application, or 2M180Z equivalent, key selection criteria include its 180 V nominal zener voltage, 2.8 mA test current, 725 Ω dynamic impedance, AEC-Q101 qualification option, and DO-204AC mechanical compatibility with standard through-hole PCB layouts.
Technical Context
The 2M180Z operates as a single-die, glass-passivated Zener diode optimized for stable reverse-biased voltage reference and transient suppression. Its 180 V zener voltage is specified at 2.8 mA test current with ±5% tolerance, and it maintains low leakage (≤0.5 µA at 136.8 V) across -55°C to +175°C junction temperature range.
Designed for high-voltage stabilization in constrained thermal environments, the device supports surge peak forward current of 15 A (8.3 ms half-sine), exhibits 7000 Ω maximum zener impedance at knee current (IZK = 0.25 mA), and meets UL 94V-0 flammability and JESD 201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ @ IZT | 180 V at 2.8 mA - precise clamping threshold for 180 V rail protection |
| PD | 2 W - maximum continuous power dissipation at TL = 75°C on 10 mm × 10 mm Cu pad |
| ZZT @ IZT | 725 Ω - dynamic impedance defining voltage regulation stiffness under load variation |
| IR @ VR | ≤0.5 µA at 136.8 V - ensures minimal standby current in high-impedance bias networks |
| TJ MAX | +175°C - enables operation in under-hood automotive or industrial motor drive environments |
| IZM | 10 mA - non-repetitive peak reverse surge current rating per JEDEC standard |
| Package | DO-204AC (DO-15) - industry-standard axial-leaded package with cathode band polarity marking |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, glass-passivated silicon die, cathode indicated by painted band, pure tin-plated leads compliant with J-STD-002 solderability, weight ≈0.400 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-bias regulation configuration |
| Cathode | Zener breakdown terminal | Marked with band; connected to higher-potential node to clamp voltage at 180 V |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enhances long-term reliability and moisture resistance in humid or thermally cycling environments |
| AEC-Q101 qualified version available | Validated for automotive-grade stress testing including temperature cycling and HTRB |
| UL 94V-0 molding compound | Prevents flame propagation in safety-critical power supply enclosures |
| JESD 201 Class 2 whisker resistance | Eliminates tin whisker growth risk in high-reliability aerospace and medical-adjacent systems |
Applications
| Automotive Engine Control Unit (ECU) Power Rail Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Clamping transients on 180 V auxiliary power bus in diesel engine ECU modules exposed to load dump events. IC Role / Device Role / Timing Role: Voltage reference and overvoltage protector placed across input filter capacitor. Use Value: Maintains system uptime by limiting voltage excursions to ≤180 V while drawing <0.5 µA standby current at 136.8 V. | Use Scenario: Protecting 16-bit ADC front-end inputs in programmable logic controllers subjected to field-wiring surges. IC Role / Device Role / Timing Role: Precision shunt regulator establishing stable reference point upstream of signal conditioning op-amps. Use Value: Enables 0.1% full-scale accuracy retention via 725 Ω low-impedance regulation at 2.8 mA test current. |
| Telecom DC-DC Converter Feedback Network | Renewable Energy Inverter DC Link Monitoring |
Use Scenario: Stabilizing feedback voltage in isolated flyback converters powering base station RF amplifiers. IC Role / Device Role / Timing Role: Secondary-side zener reference in optocoupler-coupled regulation loop. Use Value: Provides tight 180 V tolerance (±5%) critical for maintaining ±1% output voltage regulation across temperature. | Use Scenario: Monitoring 150–200 V DC link in solar microinverters during rapid irradiance changes. IC Role / Device Role / Timing Role: High-voltage sense node clamp preventing MCU analog monitor saturation. Use Value: Ensures reliable ADC sampling down to -55°C with guaranteed TJ range and ≤0.5 µA leakage at 136.8 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4749A | 180 V nominal, 2.8 mA IZT, but 1.5 W PD rating and DO-41 package | Limited to lower-power designs; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and thermal margin needs |
| BZX85C180 | 180 V, 2.8 mA IZT, 1.3 W PD, DO-41, no AEC-Q101 option | Lower surge capability (IFSM = 5 A vs. 15 A); unsuitable for load dump scenarios | Prefer for consumer-grade power supplies where JEDEC surge compliance is not required |
Compared with 1N4749A and BZX85C180, the 2M180Z provides 33% higher power rating (2 W), 3× surge current capacity (15 A), and optional AEC-Q101 qualification-making it uniquely suited for automotive and industrial applications demanding robustness and extended temperature operation.
Availability
2M180Z is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC analog input stages, and telecom DC-DC converter feedback networks requiring stable component supply and long-lifecycle support.
Supply support for 2M180Z 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, serving global automotive, industrial, and computing markets since 1979.
The 2MxxZ series was developed specifically for high-reliability voltage regulation and transient suppression in harsh-environment applications, emphasizing AEC-Q101 readiness, wide temperature operation, and UL-compliant packaging.
FAQ
What is the zener voltage tolerance for 2M180Z?
The 2M180Z has a standard zener voltage tolerance of ±5% at 2.8 mA test current, as defined in the electrical characteristics table. This tolerance applies across the full operating junction temperature range (-55°C to +175°C), and tighter tolerances are available as special-order devices per Taiwan Semiconductor's ordering guide.
Is 2M180Z suitable for automotive applications?
Yes, the 2M180Z is offered in an AEC-Q101 qualified version (e.g., 2M180ZH), which undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and unbiased highly accelerated stress testing. The base 2M180Z meets all electrical and mechanical specs required for under-hood use, but only the "H" suffix variant is certified.
What is the maximum surge current rating for 2M180Z?
The 2M180Z supports a surge peak forward current (IFSM) of 15 A for an 8.3 ms single half-sine wave superimposed on rated load, per JEDEC standards. This rating assumes lead lengths of 0.375" (9.55 mm) and is validated for transient suppression in load-dump and inductive switching events.
Does 2M180Z have halogen-free construction?
Yes, the 2M180Z uses halogen-free molding compound compliant with IEC 61249-2-21. This specification applies to all variants in the 2MxxZ family, including both standard and AEC-Q101 qualified versions, supporting RoHS and environmental compliance requirements for export and green manufacturing programs.
How is polarity identified on the 2M180Z package?
Polarity on the 2M180Z is indicated by a cathode band - a distinct painted ring near one end of the DO-204AC (DO-15) axial package. The banded end is the cathode terminal, and the unmarked end is the anode. This marking conforms to JEDEC standards and is visible under standard optical inspection.
2M180Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AC, DO-15, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 180 V
- Tolerance:
- ±5%
- Power - Max:
- 2 W
- Impedance (Max) (Zzt):
- 725 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 136.8 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
2M180Z FAQ
1.How can I place an order for 2M180Z through Aetrix?
Please submit a Request for Quotation (RFQ) for 2M180Z 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 2M180Z reliable?
The price and inventory of 2M180Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2M180Z is usually 5 days.
3.What payment methods are accepted for 2M180Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2M180Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2M180Z?
2M180Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2M180Z 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 2M180Z?
For technical support, including 2M180Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2M180Z requirements.
6.How does Aetrix verify that 2M180Z is sourced from the original manufacturer or authorized distributors?
All 2M180Z 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 2M180Z meets industry standards.
7.What is the process for return or replacement of 2M180Z?
All 2M180Z units undergo pre-shipment inspection (PSI). If there is an issue with 2M180Z, 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 2M180Z part is unused and in its original packaging.
Return procedure for 2M180Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
2M180Z Tags
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