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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Taiwan Semiconductor Corporation 1PGSMB5927

Name: 1PGSMB5927
Brand: Taiwan Semiconductor Corporation
SKU: 1PGSMB5927
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1PGSMB5927

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Zener Diodes

Package:: DO-214AA, SMB

Datasheet:: 1PGSMB5927.pdf

Description:: DIODE ZENER 12V 3W DO214AA

Quantity:: RFQ Add To RFQ list

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Inventory:9,038

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Product details

Overview

1PGSMB5927 from Taiwan Semiconductor is a surface-mount Zener diode with nominal zener voltage 12 V, 3 W power dissipation, DO-214AA (SMB) package, and 5% voltage tolerance-designed for precision voltage regulation in DC/DC converters and SMPS feedback loops.

For engineers reviewing the 1PGSMB5927 datasheet, 1PGSMB5927 pinout, 1PGSMB5927 application, or 1PGSMB5927 equivalent, key selection criteria include zener voltage tolerance (±5%), dynamic impedance (6.5 Ω at 31.2 mA), junction temperature rating (−55°C to +175°C), and RoHS/halogen-free compliance for industrial power designs.

Technical Context

The 1PGSMB5927 operates as a single-die, unidirectional Zener diode with photo-glass passivated junction for stable breakdown characteristics under transient and steady-state reverse bias. Its low inductance and matte tin-plated leads support high-frequency regulation and automated SMT assembly.

Thermal performance is defined by R_θJL = 21°C/W and R_θJA = 59°C/W on a 10 mm × 10 mm Cu pad, enabling reliable operation up to T_J = 175°C. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1.

Key Specifications

Parameter	Value and Actual Design Meaning
V_Z (Nominal)	12 V - precise reference voltage for feedback networks in isolated DC/DC converters
V_Z Range	11.40–12.60 V - ±5% tolerance ensures predictable clamping across production lots
I_ZT	31.2 mA - test current at which V_Z is specified; sets operating point for stable regulation
Z_ZT	6.5 Ω - low dynamic impedance minimizes output voltage variation under load transients
P_tot	3 W - maximum continuous power dissipation at T_L = 75°C; derates linearly above that temperature
T_J Max	+175°C - high junction temperature rating supports operation in thermally constrained enclosures
Package	DO-214AA (SMB) - industry-standard surface-mount outline with cathode band polarity marking

Pinout & Package

DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band, weight ≈ 0.100 g, UL 94V-0 rated compound.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / low-side reference node	Connected to ground or common return path in shunt regulator topology
Cathode	Zener breakdown terminal / regulated output node	Connected to feedback input of PWM controller or voltage monitor; carries full I_ZM = 125 mA DC current

Key Features

Feature	Design Value
Photo-glass passivated junction	Ensures long-term stability of V_Z under thermal cycling and humidity exposure
Low inductance construction	Minimizes voltage overshoot during fast transient events in switching regulators
J-STD-020 MSL Level 1	Enables direct placement without baking; compatible with standard reflow profiles
RoHS and halogen-free	Meets IEC 61249-2-21 and EU RoHS Directive for environmentally compliant industrial designs
Junction-to-lead thermal resistance	R_θJL = 21°C/W - enables efficient heat transfer to PCB copper when mounted per JEDEC layout

Applications

Switching Mode Power Supply (SMPS)	On-board DC/DC Converter
Use Scenario: Primary-side overvoltage protection and secondary-side feedback reference in flyback and forward converters. IC Role / Device Role / Timing Role: Shunt voltage reference regulating optocoupler input current to maintain output voltage accuracy. Use Value: 12 V nominal V_Z and ±5% tolerance enable tight output regulation (±1.5%) across line/load/temperature.	Use Scenario: Voltage clamping and reference generation in point-of-load (POL) modules for FPGA or ASIC core rails. IC Role / Device Role / Timing Role: Precision zener element in feedback divider network of synchronous buck controllers. Use Value: Low Z_ZT (6.5 Ω) reduces sensitivity to current ripple, improving transient response and output stability.
Lighting Application	Adapter
Use Scenario: Overvoltage clamp for LED driver ICs in constant-current streetlight and commercial lighting systems. IC Role / Device Role / Timing Role: Transient voltage suppressor protecting driver IC inputs from surge-induced latch-up. Use Value: 3 W P_tot and 175°C T_J max allow sustained clamping during repeated 100 V/1 µs surges in outdoor environments.	Use Scenario: Output voltage regulation and fault sensing in wall-mounted AC/DC adapters for consumer electronics. IC Role / Device Role / Timing Role: Secondary-side zener reference for TL431-based feedback loop or direct comparator input. Use Value: Matte tin plating and JESD201 Class 2 whisker resistance ensure solder joint reliability after 10+ years of field operation.

Switching Mode Power Supply (SMPS)

On-board DC/DC Converter

Use Scenario: Primary-side overvoltage protection and secondary-side feedback reference in flyback and forward converters.

IC Role / Device Role / Timing Role: Shunt voltage reference regulating optocoupler input current to maintain output voltage accuracy.

Use Value: 12 V nominal V_Z and ±5% tolerance enable tight output regulation (±1.5%) across line/load/temperature.

Use Scenario: Voltage clamping and reference generation in point-of-load (POL) modules for FPGA or ASIC core rails.

IC Role / Device Role / Timing Role: Precision zener element in feedback divider network of synchronous buck controllers.

Use Value: Low Z_ZT (6.5 Ω) reduces sensitivity to current ripple, improving transient response and output stability.

Lighting Application

Adapter

Use Scenario: Overvoltage clamp for LED driver ICs in constant-current streetlight and commercial lighting systems.

IC Role / Device Role / Timing Role: Transient voltage suppressor protecting driver IC inputs from surge-induced latch-up.

Use Value: 3 W P_tot and 175°C T_J max allow sustained clamping during repeated 100 V/1 µs surges in outdoor environments.

Use Scenario: Output voltage regulation and fault sensing in wall-mounted AC/DC adapters for consumer electronics.

IC Role / Device Role / Timing Role: Secondary-side zener reference for TL431-based feedback loop or direct comparator input.

Use Value: Matte tin plating and JESD201 Class 2 whisker resistance ensure solder joint reliability after 10+ years of field operation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N5927B	Same 12 V nominal V_Z, but 1.5 W P_tot; DO-41 through-hole package	Not suitable for high-power SMT designs; requires PCB hole drilling and wave soldering	Select only if legacy through-hole assembly or lower power (<1.5 W) operation is required
SMBZ12A	12 V V_Z, 3 W, SMB package-but tighter 2% tolerance and higher I_ZT (41 mA)	Better regulation accuracy in precision references; higher test current demands stronger bias network	Prefer when ±2% V_Z stability is critical and bias current >40 mA is available

Compared with 1N5927B and SMBZ12A, the 1PGSMB5927 offers optimal balance of 3 W surface-mount capability, ±5% V_Z tolerance, and low-cost manufacturability-making it ideal for cost-sensitive, high-volume industrial power supplies where 12 V reference stability and thermal robustness are prioritized over ultra-tight tolerance.

Availability

1PGSMB5927 is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and lighting applications requiring stable component supply, consistent parametric performance, and full RoHS/halogen-free compliance.

Supply support for 1PGSMB5927 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, computing, and power electronics markets since 1979.

The 1PGSMB series is part of TSC's high-reliability Zener diode product line, engineered specifically for stable voltage reference and overvoltage protection in compact, thermally demanding power conversion systems.

FAQ

What is the nominal zener voltage and tolerance of the 1PGSMB5927?

The 1PGSMB5927 has a nominal zener voltage of 12 V with a ±5% tolerance, meaning its actual breakdown voltage falls between 11.40 V and 12.60 V at I_ZT = 31.2 mA and T_A = 25°C. This tolerance is confirmed in the Electrical Specifications table and applies across the full operating temperature range.

What is the maximum DC zener current (I_ZM) for the 1PGSMB5927?

The maximum DC zener current for the 1PGSMB5927 is 125 mA, as specified in the Electrical Specifications table. This value represents the highest continuous current the device can safely conduct while maintaining V_Z within specification and staying within its 3 W power limit at T_L = 75°C.

Does the 1PGSMB5927 meet RoHS and halogen-free requirements?

Yes, the 1PGSMB5927 is RoHS compliant and halogen-free per IEC 61249-2-21. These compliance statements are explicitly listed under FEATURES in the official Taiwan Semiconductor documentation and verified via material declarations.

What is the thermal resistance from junction to ambient (R_θJA) for the 1PGSMB5927?

The junction-to-ambient thermal resistance (R_θJA) for the 1PGSMB5927 is 59°C/W when mounted on a standard 10 mm × 10 mm copper pad on a PCB, as stated in the THERMAL PERFORMANCE section. This value assumes natural convection cooling and defines the thermal design margin for board-level power dissipation.

What package type does the 1PGSMB5927 use, and how is polarity marked?

The 1PGSMB5927 uses the DO-214AA (SMB) surface-mount package. Polarity is marked by a visible cathode band on the body end, consistent with JEDEC standards. The terminals are matte tin-plated and solderable per J-STD-002, supporting both leaded and lead-free reflow processes.

1PGSMB5927 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):: 12 V

Tolerance:: ±5%

Power - Max:: 3 W

Impedance (Max) (Zzt):: 6.5 Ohms

Current - Reverse Leakage @ Vr:: 1 µA @ 9.1 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)

1PGSMB5927 FAQ

1.How can I place an order for 1PGSMB5927 through Aetrix?

Please submit a Request for Quotation (RFQ) for 1PGSMB5927 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 1PGSMB5927 reliable?

The price and inventory of 1PGSMB5927 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PGSMB5927 is usually 5 days.

3.What payment methods are accepted for 1PGSMB5927?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PGSMB5927 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1PGSMB5927?

1PGSMB5927 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1PGSMB5927 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 1PGSMB5927?

For technical support, including 1PGSMB5927 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PGSMB5927 requirements.

6.How does Aetrix verify that 1PGSMB5927 is sourced from the original manufacturer or authorized distributors?

All 1PGSMB5927 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 1PGSMB5927 meets industry standards.

7.What is the process for return or replacement of 1PGSMB5927?

All 1PGSMB5927 units undergo pre-shipment inspection (PSI). If there is an issue with 1PGSMB5927, 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 1PGSMB5927 part is unused and in its original packaging.

Return procedure for 1PGSMB5927:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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