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Taiwan Semiconductor Corporation 2M190Z
- Part No.:
- 2M190Z
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
2M190Z.pdf
- Description:
- DIODE ZENER 190V 2W DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,237
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Product details
Overview
2M190Z from Taiwan Semiconductor is a 2 W, 190 V Zener diode in DO-204AC (DO-15) package, featuring glass-passivated junction, ≤0.5 µA leakage at 144.8 V, 825 Ω dynamic impedance at 2.6 mA test current, and AEC-Q101 qualification option for automotive applications.
For engineers reviewing the 2M190Z datasheet, 2M190Z pinout, 2M190Z application, or 2M190Z equivalent, this device serves as a precision voltage reference and overvoltage protection element in power supply regulation, ESD clamp circuits, and industrial control feedback loops where stable 190 V zener operation under 2.6 mA bias is required.
Technical Context
The 2M190Z operates as a single-die, silicon planar Zener diode with cathode-band polarity indication and pure tin-plated leads compliant with J-STD-002 solderability. Its 190 V nominal zener voltage is specified at 2.6 mA test current (IZT), with maximum zener impedance of 825 Ω at IZT and 8000 Ω at knee current (IZK = 0.25 mA).
It supports steady-state power dissipation of 2 W at TL = 75°C on 10 mm × 10 mm Cu pad, with junction temperature range from –55°C to +175°C and surge peak forward current rating of 15 A (8.3 ms half-sine). The device meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 190 V ±5% at 2.6 mA - defines precise clamping threshold for high-voltage regulation |
| Power Dissipation (PD) | 2 W - supports continuous operation in compact PCB layouts with adequate copper thermal relief |
| Zener Impedance (ZZT) | 825 Ω at IZT - ensures stable voltage under small-signal variations in bias current |
| Leakage Current (IR) | ≤0.5 µA at 144.8 V - minimizes standby power loss in high-impedance sensing paths |
| Maximum Zener Current (IZM) | 10 mA - sets upper limit for safe DC conduction without thermal runaway |
| Junction Temperature (TJ) | –55°C to +175°C - enables deployment in under-hood automotive and industrial environments |
| Package | DO-204AC (DO-15) - industry-standard axial leaded package compatible with automated insertion and wave soldering |
Pinout & Package
DO-204AC (DO-15) package with axial leads: cathode indicated by colored band; anode and cathode terminals are non-polarized in function but directionally critical for reverse-bias operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower potential node; conducts when forward biased ≥0.7 V |
| Cathode | Zener breakdown terminal | Connected to higher potential node; regulates/clamps at 190 V when reverse biased |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances long-term reliability and moisture resistance in humid or contaminated 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 during fault conditions in safety-critical power systems |
| Pure tin-plated leads | Ensures consistent solder wetting and eliminates lead-free compatibility concerns |
Applications
| Industrial Power Supply Regulation | Automotive ECU Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing reference voltage in 200 V DC bus monitoring circuitry for motor drives. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp input to 190 V with ±5% tolerance. Use Value: Prevents ADC overrange and protects downstream op-amps by limiting sensed voltage to safe 190 V level. | Use Scenario: Suppressing load-dump transients on 24 V vehicle battery lines connected to engine control units. IC Role / Device Role / Timing Role: High-voltage transient suppressor placed across supply rail with fast response to >120 V spikes. Use Value: Absorbs energy from ISO 7637-2 Pulse 5a events without degradation due to 175°C TJ rating. |
| Telecom Line Interface Protection | Renewable Energy Inverter Feedback |
Use Scenario: Protecting RS-485 transceivers from induced surges on long outdoor data lines. IC Role / Device Role / Timing Role: Standby shunt regulator that activates only during overvoltage events above 190 V. Use Value: Maintains signal integrity below 190 V while diverting destructive energy away from IC pins. | Use Scenario: Providing isolated voltage scaling for PV string monitoring in solar inverters with 1000 V DC inputs. IC Role / Device Role / Timing Role: Precision divider element in high-ratio resistive network feeding isolation amplifier. Use Value: Enables accurate 0.1% scaled representation of 1000 V bus using 190 V reference point. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4749A | 190 V nominal, 1 W rating, DO-41 package, no AEC-Q101 option | Limited to lower-power designs; lacks automotive qualification and thermal robustness | Select when cost sensitivity outweighs power margin and automotive compliance needs |
| BZX85C190 | 190 V nominal, 1.3 W rating, DO-41, ±5% tolerance, higher ZZT (~1000 Ω) | Suitable for general-purpose clamping but not recommended for high-reliability automotive use | Choose for legacy designs requiring DO-41 footprint and moderate surge handling |
Compared with 1N4749A and BZX85C190, the 2M190Z delivers higher power headroom (2 W vs. ≤1.3 W), superior thermal performance (175°C TJ), and optional AEC-Q101 validation-making it preferred for automotive and industrial systems demanding sustained 190 V regulation under thermal stress.
Availability
2M190Z is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive ECU overvoltage clamp, and telecom line interface protection requiring stable component supply and long-lifecycle support.
Supply support for 2M190Z 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 industrial, automotive, and consumer markets since 1979.
The 2MxxZ series was developed to deliver high-voltage Zener regulation with enhanced thermal ruggedness and automotive qualification options, targeting power management and protection circuits in harsh-environment applications.
FAQ
What is the zener voltage tolerance for 2M190Z?
The 2M190Z has a standard zener voltage tolerance of ±5% at 2.6 mA test current, as specified in the electrical characteristics table. This tolerance applies to the nominal 190 V rating and is measured under JEDEC-compliant conditions: 40 ms ±10 ms current pulse, ambient temperature of 25°C, and lead length of 0.375". Tighter tolerances are available as special-order devices.
Does 2M190Z support automotive applications?
Yes, the 2M190Z is available in an AEC-Q101 qualified version (marked as 2M190ZH), which undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and mechanical shock. The base 2M190Z part is not automatically qualified; only variants with the "H" suffix meet AEC-Q101 requirements.
What is the maximum allowable junction temperature for 2M190Z?
The maximum junction temperature (TJ MAX) for 2M190Z is +175°C, with a full operating range from –55°C to +175°C. This rating is validated under steady-state conditions with 2 W power dissipation at TL = 75°C on a 10 mm × 10 mm copper pad, enabling reliable operation in under-hood automotive and high-ambient industrial environments.
How does the zener impedance of 2M190Z affect regulation stability?
The 2M190Z exhibits a zener impedance (ZZT) of 825 Ω at 2.6 mA test current, meaning a 1 mA change in bias current produces approximately 0.825 V variation in output voltage. This value ensures predictable regulation behavior in feedback networks where current stability is maintained within ±0.5 mA, making it suitable for precision reference applications with low-noise bias sources.
What packaging options are available for 2M190Z?
The 2M190Z is supplied in DO-204AC (DO-15) package with two standard packing formats: 3,500 units per tape-and-reel (ordering code 2M190Z or 2M190ZH) and 1,500 units per ammo box (ordering code 2M190Z A0G or 2M190ZHA0G). All versions feature pure tin-plated leads and comply with RoHS and halogen-free standards.
2M190Z 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):
- 190 V
- Tolerance:
- ±5%
- Power - Max:
- 2 W
- Impedance (Max) (Zzt):
- 825 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 144.8 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)
2M190Z FAQ
1.How can I place an order for 2M190Z through Aetrix?
Please submit a Request for Quotation (RFQ) for 2M190Z 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 2M190Z reliable?
The price and inventory of 2M190Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2M190Z is usually 5 days.
3.What payment methods are accepted for 2M190Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2M190Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2M190Z?
2M190Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2M190Z 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 2M190Z?
For technical support, including 2M190Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2M190Z requirements.
6.How does Aetrix verify that 2M190Z is sourced from the original manufacturer or authorized distributors?
All 2M190Z 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 2M190Z meets industry standards.
7.What is the process for return or replacement of 2M190Z?
All 2M190Z units undergo pre-shipment inspection (PSI). If there is an issue with 2M190Z, 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 2M190Z part is unused and in its original packaging.
Return procedure for 2M190Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
2M190Z Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZT52C15-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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BZT52C3V6LP-7
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SMAZ12-13-F
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