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Taiwan Semiconductor Corporation 1PGSMB5953
- Part No.:
- 1PGSMB5953
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
1PGSMB5953.pdf
- Description:
- DIODE ZENER 150V 3W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,708
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Product details
Overview
1PGSMB5953 from Taiwan Semiconductor is a surface-mount 150 V nominal Zener diode in DO-214AA (SMB) package, rated for 3 W total power dissipation, with 2.5 mA test current, 6000 Ω dynamic impedance at 0.25 mA, and maximum DC zener current of 10 mA. It serves as a precision voltage reference or overvoltage clamp in high-voltage DC/DC converters and industrial power supplies.
For engineers reviewing the 1PGSMB5953 datasheet, 1PGSMB5953 pinout, 1PGSMB5953 application, or 1PGSMB5953 equivalent, key selection criteria include its 150 V nominal zener voltage (±5%), 175 °C max junction temperature, 21 °C/W junction-to-lead thermal resistance, low-inductance SMB package, and RoHS/halogen-free compliance for reliable high-voltage regulation in space-constrained designs.
Technical Context
The 1PGSMB5953 operates as a single-die, unidirectional Zener diode with photo-glass passivated junction for stable breakdown characteristics under transient stress. Its 150 V nominal zener voltage is specified at 2.5 mA test current (IZT), with dynamic impedance (ZZT) of 6000 Ω measured at 0.25 mA AC signal (60 Hz).
Thermal performance is defined for mounting on a 10 mm × 10 mm copper pad: junction-to-ambient resistance is 59 °C/W, enabling sustained 3 W operation up to 75 °C lead temperature before derating. Polarity is marked by cathode band per JEDEC DO-214AA standard.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ (Nominal) | 150 V ±5% - precise clamping threshold for 142.5–157.5 V regulation window |
| IZT | 2.5 mA - standardized test current for guaranteed VZ measurement accuracy |
| ZZT | 6000 Ω - dynamic impedance at IZT, defining voltage stability under small-signal AC load variation |
| Ptot | 3 W - maximum continuous power dissipation at TL = 75 °C, derated linearly above |
| TJ max | +175 °C - enables operation in high-temperature industrial environments without thermal shutdown |
| RθJL | 21 °C/W - low thermal resistance path to PCB leads supports efficient heat transfer in compact layouts |
| Package | DO-214AA (SMB) - surface-mount outline with 0.100 g mass, J-STD-020 Level 1 moisture sensitivity |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band, UL 94V-0 rated compound, and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node during reverse-bias operation; forms cathode-referenced clamp |
| Cathode | Zener breakdown terminal | Connected to higher-potential node; voltage regulation occurs across cathode-to-anode when reverse biased ≥142.5 V |
Key Features
| Feature | Design Value |
|---|---|
| Photo-glass passivated junction | Ensures long-term parameter stability and reduced leakage drift under thermal cycling and humidity exposure |
| Low inductance SMB package | Minimizes parasitic ringing during fast transient suppression in switching power stages |
| J-STD-020 Level 1 moisture sensitivity | Eliminates need for baking prior to reflow soldering, reducing manufacturing overhead |
| RoHS and halogen-free compliance | Meets IEC 61249-2-21 and global environmental directives for industrial and consumer end equipment |
Applications
| Industrial Power Supplies | High-Voltage DC/DC Converters |
|---|---|
Use Scenario: Voltage clamping in 100–200 V input industrial SMPS front-end circuits. IC Role / Device Role / Timing Role: Zener diode providing overvoltage protection and reference stabilization for feedback networks. Use Value: Maintains regulation within ±5% tolerance across temperature, ensuring consistent output accuracy despite line transients. | Use Scenario: Reference voltage generation in isolated flyback or forward converter secondary-side feedback loops. IC Role / Device Role / Timing Role: Precision 150 V Zener acting as shunt regulator for optocoupler biasing and error amplifier reference. Use Value: 6000 Ω dynamic impedance ensures minimal AC perturbation on feedback node, improving loop stability. |
| LED Driver Protection | Telecom Line Interface |
Use Scenario: Overvoltage clamp for constant-current LED strings powered from 120–170 VDC bus rails. IC Role / Device Role / Timing Role: Transient voltage suppressor protecting driver ICs and LEDs from surge events. Use Value: 3 W power rating allows absorption of repetitive 100 ns–1 µs surges without degradation. | Use Scenario: Surge protection on -48 V telecom battery backup lines exposed to lightning-induced transients. IC Role / Device Role / Timing Role: High-voltage Zener clamp limiting line voltage excursions to safe levels for downstream interface ICs. Use Value: 175 °C junction rating supports uninterrupted operation in sealed, high-ambient telecom cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A | TVS diode (unidirectional), 150 V standoff, 243 V clamping at 10 A, 600 W peak power | Designed for transient suppression, not precision regulation; higher clamping voltage, no tight VZ tolerance | Select for surge immunity where exact voltage reference is secondary to energy handling |
| 1N5375B | Through-hole 150 V Zener, 5 W, DO-201AD package, 1000 Ω ZZT at 100 mA | Higher power but larger footprint and higher impedance; requires lead-forming and wave soldering | Select when board-level thermal mass supports higher dissipation and SMT is not required |
Compared with SMBJ150A and 1N5375B, the 1PGSMB5953 offers tighter 5% VZ tolerance and lower-profile SMB packaging ideal for automated SMT assembly, while delivering stable 150 V regulation at low test current-making it optimal for precision reference and clamping in space-constrained, high-reliability industrial systems.
Availability
1PGSMB5953 is available at Aetrix Electronics and suitable for industrial power supplies, high-voltage DC/DC converters, LED driver protection, and telecom line interface applications requiring stable component supply and full traceability.
Supply support for 1PGSMB5953 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 power management, protection, and signal conditioning devices.
The 1PGSMB series is designed specifically for high-reliability, high-voltage Zener regulation in surface-mount power conversion and protection circuits, emphasizing thermal robustness, tight voltage tolerance, and process consistency across the 11–200 V range.
FAQ
What is the nominal zener voltage and tolerance of the 1PGSMB5953?
The 1PGSMB5953 has a nominal zener voltage of 150 V with a ±5% tolerance, meaning its actual breakdown voltage falls between 142.5 V and 157.5 V when measured at 2.5 mA test current and 25 °C ambient temperature. This tolerance is confirmed in the Electrical Specifications table of the official Taiwan Semiconductor datasheet (Version C2102), and applies strictly to the 1PGSMB5953 variant-not the broader family.
What is the maximum power dissipation rating for the 1PGSMB5953 and under what conditions?
The 1PGSMB5953 is rated for 3 W total power dissipation at a lead temperature (TL) of 75 °C, measured with zero lead length on a 10 mm × 10 mm copper pad. Power must be linearly derated above 75 °C at 33.3 mW/°C, reaching zero at 175 °C junction temperature. This rating is defined in the Absolute Maximum Ratings section and validated via thermal testing per JEDEC standards.
Does the 1PGSMB5953 have a specified zener impedance, and how is it measured?
Yes, the 1PGSMB5953 has a zener impedance (ZZT) of 6000 Ω, measured at 0.25 mA AC current superimposed on a 2.5 mA DC bias, with 60 Hz frequency and 50 mVp-p signal amplitude. This value reflects small-signal dynamic resistance and is documented in the Electrical Specifications table under "Zener Impedance (Note 3)" for the 1PGSMB5953 row.
Is the 1PGSMB5953 RoHS compliant and halogen-free?
Yes, the 1PGSMB5953 is RoHS compliant and halogen-free per IEC 61249-2-21. This is explicitly stated in the FEATURES section of the datasheet and verified through material declarations. The molding compound meets UL 94V-0 flammability rating, and terminals are matte tin plated per J-STD-002 solderability requirements.
What is the package type and marking code for the 1PGSMB5953?
1PGSMB5953 uses the DO-214AA (SMB) surface-mount package with cathode polarity indicated by a band. Its marking code is "P953B", as shown in the Electrical Specifications table. Mechanical data confirm the case conforms to JEDEC DO-214AA outlines, with 0.100 g typical weight and J-STD-020 Level 1 moisture sensitivity-requiring no pre-bake before reflow.
1PGSMB5953 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):
- 150 V
- Tolerance:
- ±5%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 600 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 114 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)
1PGSMB5953 FAQ
1.How can I place an order for 1PGSMB5953 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PGSMB5953 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 1PGSMB5953 reliable?
The price and inventory of 1PGSMB5953 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PGSMB5953 is usually 5 days.
3.What payment methods are accepted for 1PGSMB5953?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PGSMB5953 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PGSMB5953?
1PGSMB5953 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PGSMB5953 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 1PGSMB5953?
For technical support, including 1PGSMB5953 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PGSMB5953 requirements.
6.How does Aetrix verify that 1PGSMB5953 is sourced from the original manufacturer or authorized distributors?
All 1PGSMB5953 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 1PGSMB5953 meets industry standards.
7.What is the process for return or replacement of 1PGSMB5953?
All 1PGSMB5953 units undergo pre-shipment inspection (PSI). If there is an issue with 1PGSMB5953, 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 1PGSMB5953 part is unused and in its original packaging.
Return procedure for 1PGSMB5953:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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