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Taiwan Semiconductor Corporation 1PGSMB5950
- Part No.:
- 1PGSMB5950
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
1PGSMB5950.pdf
- Description:
- DIODE ZENER 110V 3W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,810
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Product details
Overview
1PGSMB5950 from Taiwan Semiconductor is a surface-mount 110 V, ±5% tolerance Zener diode in DO-214AA (SMB) package, rated for 3 W total power dissipation, 175 °C maximum junction temperature, and 83.6 mA maximum DC zener current. It serves as a precision voltage reference or overvoltage clamp in DC/DC converters and industrial power supplies.
For engineers reviewing the 1PGSMB5950 datasheet, 1PGSMB5950 pinout, 1PGSMB5950 application, or 1PGSMB5950 equivalent, key selection criteria include nominal zener voltage (110 V), test current (3.4 mA), dynamic impedance (4000 Ω at IZT), leakage current (0.25 μA at 83.6 V), and thermal resistance (RθJA = 59 °C/W).
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain stable voltage regulation across varying load and line conditions. Its glass-passivated junction ensures long-term stability and low leakage, while the DO-214AA package supports automated placement and delivers low inductance for high-frequency transient suppression.
The device is characterized at 25 °C with specified zener impedance (ZZT = 4000 Ω at 3.4 mA), knee impedance (ZZK = 0.25 Ω at 1 mA), and reverse leakage (IR = 1 μA at VR = 83.6 V). Thermal performance is validated on a 10 mm × 10 mm copper pad, yielding RθJL = 21 °C/W and RθJC = 23 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ (Nominal) | 110 V - precise clamping/reference voltage under 3.4 mA test current |
| Tolerance | ±5% - ensures predictable regulation window (104.5–115.5 V) |
| Ptot | 3 W - maximum continuous power dissipation at TL = 75 °C |
| IZM | 13 mA - max DC zener current before thermal runaway risk |
| ZZT @ IZT | 4000 Ω - dynamic impedance affecting regulation accuracy under small-signal AC variation |
| RθJA | 59 °C/W - junction-to-ambient thermal resistance on standard PCB layout |
| TJ max | 175 °C - maximum allowable junction temperature for reliable operation |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode indicated by a band on the body; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-voltage side in reverse-bias operation | Connected to lower potential node when used as shunt regulator or clamp |
| Cathode | Zener breakdown terminal / high-voltage side in reverse-bias operation | Connected to regulated or protected node; polarity marked by band |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable long-term VZ drift < 0.05%/1000 h and low IR degradation |
| Moisture sensitivity level 1 | No baking required prior to reflow; compatible with standard SMT assembly |
| UL 94V-0 molding compound | Self-extinguishing encapsulation meets safety standards for power electronics |
| Low inductance construction | Minimizes voltage overshoot during fast transients (e.g., ESD or switching spikes) |
Applications
| Switching Mode Power Supply (SMPS) | On-board DC/DC Converter |
|---|---|
Use Scenario: Voltage feedback loop reference in isolated flyback or forward converter secondary-side regulation. IC Role / Device Role: Precision shunt reference providing stable 110 V setpoint for optocoupler-driven control. Use Value: Tight ±5% VZ tolerance and low tempco ensure output regulation within ±1.5% over -40 to +125 °C ambient. | Use Scenario: Overvoltage protection clamp on 48 V or 60 V intermediate bus in telecom or server power modules. IC Role / Device Role: Transient voltage suppressor triggered above 115.5 V to protect downstream POL converters. Use Value: 3 W power rating and 59 °C/W RθJA allow sustained clamping without thermal runaway under repetitive surges. |
| Lighting Application | Adapter |
Use Scenario: Open-circuit protection in constant-current LED drivers using buck topology. IC Role / Device Role: Zener clamp across output to limit voltage during LED string disconnection. Use Value: 175 °C TJmax and glass passivation support reliability in thermally constrained LED housing environments. | Use Scenario: Secondary-side voltage reference in universal-input AC/DC adapters for consumer electronics. IC Role / Device Role: Stable 110 V reference for TL431-based feedback network in 12–24 V output designs. Use Value: Low 0.25 μA leakage at 83.6 V minimizes standby power loss and improves no-load efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110A | TVS diode (unidirectional), 110 V standoff, 170 V clamping, 600 W peak pulse power | Designed for surge suppression, not precision regulation; higher clamping voltage, no tight VZ tolerance | Select for transient protection only; not suitable as voltage reference due to lack of zener regulation curve |
| 1N5375B | Through-hole DO-41, 110 V, ±5%, 5 W, RθJA ≈ 50 °C/W, higher leakage (5 μA @ 88 V) | Same VZ but larger footprint, lower power density, and less suitable for automated SMT lines | Choose only if legacy through-hole assembly or higher Ptot margin is required; SMB package preferred for space-constrained designs |
Compared with SMBJ110A and 1N5375B, the 1PGSMB5950 uniquely combines SMT-compatible DO-214AA packaging, ±5% VZ tolerance, low leakage (1 μA), and verified 3 W steady-state capability-making it optimal for compact, precision-regulated power rails where thermal management and long-term stability are critical.
Availability
1PGSMB5950 is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and lighting applications requiring stable component supply, RoHS-compliant sourcing, and halogen-free materials.
Supply support for 1PGSMB5950 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, including Zener, TVS, rectifier, and MOSFET products for industrial and consumer markets.
The 1PGSMB59xx series is part of TSC's surface-mount Zener portfolio designed specifically for high-reliability, automated SMT power regulation and protection in space-constrained, thermally demanding applications.
FAQ
What is the nominal zener voltage and tolerance of the 1PGSMB5950?
The 1PGSMB5950 has a nominal zener voltage of 110 V with a ±5% tolerance, meaning its actual breakdown voltage falls between 104.5 V and 115.5 V at the specified test current of 3.4 mA. This tolerance is guaranteed per the device's characterization and marking code P950B, and applies under standard 25 °C ambient conditions with thermal equilibrium.
What is the maximum DC zener current (IZM) for the 1PGSMB5950?
The maximum DC zener current for the 1PGSMB5950 is 13 mA, derived from its 3 W power rating and nominal 110 V zener voltage (P = V × I → I = 3 W / 110 V ≈ 27 mA, derated to 13 mA for safe thermal margin). This value is confirmed in the Electrical Specifications table and reflects the highest continuous current the device can sustain without exceeding its 175 °C junction temperature limit.
Does the 1PGSMB5950 meet RoHS and halogen-free requirements?
Yes, the 1PGSMB5950 complies with RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. These compliance attributes are explicitly stated in the FEATURES section of the official Taiwan Semiconductor documentation and verified via material declarations supporting full traceability for industrial and consumer end-equipment certification.
What is the thermal resistance from junction to ambient (RθJA) for the 1PGSMB5950?
The junction-to-ambient thermal resistance (RθJA) of the 1PGSMB5950 is 59 °C/W, measured on a standard test board with a 10 mm × 10 mm copper pad. This value is critical for calculating temperature rise under load and is documented in the THERMAL PERFORMANCE section of the datasheet, directly informing heatsinking and layout decisions for 1PGSMB5950-based designs.
Is the 1PGSMB5950 suitable for use in automotive applications?
The 1PGSMB5950 is not qualified to AEC-Q101 or automotive-grade reliability standards. While it operates from –55 °C to +175 °C and meets industrial thermal and environmental specs, Taiwan Semiconductor does not list it in their automotive product portfolio, and the datasheet explicitly excludes medical, life-saving, and life-sustaining applications-including automotive safety systems.
1PGSMB5950 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- 1PGSMB59
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 110 V
- Tolerance:
- ±5%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 300 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 83.6 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
1PGSMB5950 FAQ
1.How can I place an order for 1PGSMB5950 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PGSMB5950 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 1PGSMB5950 reliable?
The price and inventory of 1PGSMB5950 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PGSMB5950 is usually 5 days.
3.What payment methods are accepted for 1PGSMB5950?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PGSMB5950 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PGSMB5950?
1PGSMB5950 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PGSMB5950 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 1PGSMB5950?
For technical support, including 1PGSMB5950 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PGSMB5950 requirements.
6.How does Aetrix verify that 1PGSMB5950 is sourced from the original manufacturer or authorized distributors?
All 1PGSMB5950 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 1PGSMB5950 meets industry standards.
7.What is the process for return or replacement of 1PGSMB5950?
All 1PGSMB5950 units undergo pre-shipment inspection (PSI). If there is an issue with 1PGSMB5950, 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 1PGSMB5950 part is unused and in its original packaging.
Return procedure for 1PGSMB5950:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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