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

onsemi 1PMT5929BT1

Name: 1PMT5929BT1
Brand: onsemi
SKU: 1PMT5929BT1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1PMT5929BT1

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: DO-216AA

Datasheet:: 1PMT5929BT1.pdf

Description:: DIODE ZENER 15V 3.2W POWERMITE

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Inventory:6,380

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Product details

Overview

1PMT5929BT1 from onsemi is a 3.2 W surface-mount Zener diode in the POWERMITE® (DO−216AA) package, with nominal Zener voltage 15 V (min 14.25 V, max 15.75 V), test current 25 mA, dynamic impedance 9.0 Ω at IZT, and reverse leakage ≤0.25 µA at 11.4 V. It delivers low-profile thermal performance for voltage regulation in portable power rails.

For engineers reviewing the 1PMT5929BT1 datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance, thermal resistance to cathode (23°C/W), ESD rating (>16 kV HBM), footprint area (8.45 mm²), and Pb-free tape-and-reel packaging (12,000 units/reel).

Technical Context

This device operates as a precision voltage reference and overvoltage clamp in DC power conditioning circuits. Its 15 V nominal Zener voltage targets mid-range logic supply stabilization and analog sensor biasing, with tight ±5% tolerance (14.25–15.75 V) and low dynamic impedance (9.0 Ω) ensuring stable regulation under varying load currents.

The POWERMITE package enables high thermal efficiency: junction-to-cathode thermal resistance is 23°C/W, allowing full 3.2 W dissipation when the cathode tab is held at 75°C. The integral metallic bottom and locking tabs support reliable reflow soldering and mechanical retention on compact PCBs.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	14.25–15.75 V @ 25 mA - defines regulated output range for 15 V rail clamping
Power Dissipation	3.2 W @ cathode tab = 75°C - supports sustained operation in thermally constrained spaces
Zener Impedance (Z_ZT)	9.0 Ω @ 25 mA - ensures minimal output voltage shift under load transients
Reverse Leakage (I_R)	≤0.25 µA @ 11.4 V - guarantees low quiescent current in standby-biased protection circuits
ESD Rating	Class 3 (>16 kV HBM) - provides robust handling without external ESD protection
Package	POWERMITE® (DO−216AA), 1.1 mm max height - fits ultra-thin mobile and wearable form factors
Footprint Area	8.45 mm² - 50% smaller than SMA, enabling dense layout in space-constrained designs

Pinout & Package

POWERMITE® (DO−216AA) is a 2-terminal surface-mount plastic package with integral heat sink tabs and full metallic bottom. Cathode is marked by a polarity band and oriented toward sprocket holes in tape.

Pin/Terminal	Circuit Role	Design Meaning
1	Cathode	Connected to regulated voltage node; serves as primary thermal path to PCB copper pour
2	Anode	Connected to ground or lower-potential rail; electrically and thermally isolated from cathode tab

Key Features

Feature	Design Value
Low-profile thermal design	1.1 mm max height with 23°C/W junction-to-cathode resistance enables high-power density regulation
Integral heat sink tabs	Metallic locking tabs improve thermal conduction and mechanical anchoring during reflow
Full metallic bottom	Eliminates flux entrapment and enhances solder joint reliability on fine-pitch pads
Pb-free compliant	G-suffix variant available; meets RoHS and JEDEC J-STD-020 reflow profile requirements
ESD-hardened construction	Class 3 HBM (>16 kV) allows direct integration into handheld ESD-prone interfaces without guard rings

Applications

USB Power Delivery Clamp	Smartphone Battery Protection
Use Scenario: Clamping transient surges on 5 V/9 V/15 V USB PD bus lines during hot-plug events. IC Role / Device Role / Timing Role: Zener diode acting as shunt overvoltage protector downstream of buck converter. Use Value: 15 V nominal breakdown precisely matches USB PD PPS mid-voltage profiles while 9.0 Ω Z_ZT limits clamping overshoot.	Use Scenario: Regulating bias voltage for fuel gauge ICs and battery management system comparators. IC Role / Device Role / Timing Role: Precision voltage reference source for ADC reference dividers and comparator thresholds. Use Value: ±5% V_Z tolerance and <0.25 µA leakage ensure accurate state-of-charge reporting across temperature.
Industrial Sensor Signal Conditioning	Wearable Health Monitor Power Rail
Use Scenario: Stabilizing excitation voltage for bridge-based pressure/strain sensors in factory automation modules. IC Role / Device Role / Timing Role: Low-noise voltage regulator for ratiometric sensor front-ends. Use Value: 23°C/W R_Jcathode maintains stable V_Z despite ambient shifts up to +85°C in enclosed enclosures.	Use Scenario: Providing clean 15 V bias to optical heart-rate sensor drivers in wrist-worn devices. IC Role / Device Role / Timing Role: Compact voltage clamp protecting analog front-end from ESD and load-dump transients. Use Value: 8.45 mm² footprint and 1.1 mm height fit within 3.5 mm board thickness constraints of wearables.

USB Power Delivery Clamp

Smartphone Battery Protection

Use Scenario: Clamping transient surges on 5 V/9 V/15 V USB PD bus lines during hot-plug events.

IC Role / Device Role / Timing Role: Zener diode acting as shunt overvoltage protector downstream of buck converter.

Use Value: 15 V nominal breakdown precisely matches USB PD PPS mid-voltage profiles while 9.0 Ω Z_ZT limits clamping overshoot.

Use Scenario: Regulating bias voltage for fuel gauge ICs and battery management system comparators.

IC Role / Device Role / Timing Role: Precision voltage reference source for ADC reference dividers and comparator thresholds.

Use Value: ±5% V_Z tolerance and <0.25 µA leakage ensure accurate state-of-charge reporting across temperature.

Industrial Sensor Signal Conditioning

Wearable Health Monitor Power Rail

Use Scenario: Stabilizing excitation voltage for bridge-based pressure/strain sensors in factory automation modules.

IC Role / Device Role / Timing Role: Low-noise voltage regulator for ratiometric sensor front-ends.

Use Value: 23°C/W R_Jcathode maintains stable V_Z despite ambient shifts up to +85°C in enclosed enclosures.

Use Scenario: Providing clean 15 V bias to optical heart-rate sensor drivers in wrist-worn devices.

IC Role / Device Role / Timing Role: Compact voltage clamp protecting analog front-end from ESD and load-dump transients.

Use Value: 8.45 mm² footprint and 1.1 mm height fit within 3.5 mm board thickness constraints of wearables.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N5929BRLG	Same 15 V nominal Zener, but in DO-41 through-hole package; 1.0 W rating; no metallic bottom or locking tabs	Requires through-hole assembly; unsuitable for automated SMT lines or ultra-thin PCBs	Select only if legacy through-hole compatibility or higher surge capability (not power rating) is required
SMBJ15A	TVS diode with 15 V standoff, 24.4 V clamping; 600 W peak pulse power; bidirectional; 100 pF capacitance	Designed for transient suppression, not precision regulation; higher clamping voltage reduces accuracy in reference roles	Use only for surge protection where precise DC regulation is secondary to ESD/EMP immunity

Compared with 1N5929BRLG and SMBJ15A, the 1PMT5929BT1 uniquely combines SMT compatibility, 3.2 W continuous dissipation, and ±5% V_Z tolerance-making it optimal for space-constrained, thermally demanding DC regulation where both accuracy and power density matter.

Availability

1PMT5929BT1 is available at Aetrix Electronics and suitable for USB Power Delivery systems, smartphone battery management ICs, industrial sensor signal chains, and wearable health monitor power rails requiring stable component supply and consistent Zener voltage performance.

Supply support for 1PMT5929BT1 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, medical, and IoT applications.

The 1PMT5920B Series was designed specifically for high-density, low-profile voltage regulation in portable and battery-powered equipment-prioritizing thermal efficiency, ESD robustness, and miniaturized SMT manufacturability.

FAQ

What is the Zener voltage tolerance of the 1PMT5929BT1?

The 1PMT5929BT1 has a nominal Zener voltage of 15 V with a guaranteed tolerance of ±5%, specified as 14.25 V minimum and 15.75 V maximum at 25 mA test current and 25°C ambient. This tolerance remains valid across the full operating temperature range of −55°C to +150°C, per the device's electrical characteristics table.

Can the 1PMT5929BT1 be used in Pb-free reflow processes?

Yes, the 1PMT5929BT1 is compatible with Pb-free reflow soldering. Its POWERMITE® package is rated for peak temperatures up to 260°C for 10 seconds, meeting JEDEC J-STD-020 requirements. The "G" suffix indicates Pb-free availability, and the full metallic bottom ensures uniform wetting and void-free joints under standard reflow profiles.

What is the thermal resistance from junction to cathode tab for the 1PMT5929BT1?

The thermal resistance from junction to cathode (R_Jcathode) for the 1PMT5929BT1 is 23°C/W. This value is measured with the cathode tab maintained at 75°C and enables the device to safely dissipate its full 3.2 W rated power-critical for thermal design in sealed or convection-limited environments.

How does the 1PMT5929BT1 compare to standard SMA Zener diodes in size and thermal performance?

The 1PMT5929BT1 in POWERMITE® (DO−216AA) offers identical thermal performance to SMA packages but occupies 50% less footprint area (8.45 mm² vs ~17 mm²) and achieves a maximum height of just 1.1 mm-among the lowest in the industry. Its integral heat sink tabs and metallic bottom further enhance thermal transfer beyond typical SMA constructions.

Is the 1PMT5929BT1 suitable for ESD protection in portable electronics?

Yes, the 1PMT5929BT1 is rated Class 3 (>16 kV) per Human Body Model (HBM), making it suitable for ESD protection in handheld and portable electronics. Its low leakage (<0.25 µA) and stable 15 V breakdown allow it to serve dual roles-as both a precision voltage reference and a robust first-line ESD clamp-without requiring additional protection components.

1PMT5929BT1 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: DO-216AA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Voltage - Zener (Nom) (Vz):: 15 V

Tolerance:: ±5%

Power - Max:: 3.2 W

Impedance (Max) (Zzt):: 9 Ohms

Current - Reverse Leakage @ Vr:: 1 µA @ 11.4 V

Voltage - Forward (Vf) (Max) @ If:: 1.25 V @ 200 mA

Operating Temperature:: -55°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: Powermite

1PMT5929BT1 FAQ

1.How can I place an order for 1PMT5929BT1 through Aetrix?

Please submit a Request for Quotation (RFQ) for 1PMT5929BT1 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 1PMT5929BT1 reliable?

The price and inventory of 1PMT5929BT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5929BT1 is usually 5 days.

3.What payment methods are accepted for 1PMT5929BT1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5929BT1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1PMT5929BT1?

1PMT5929BT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1PMT5929BT1 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 1PMT5929BT1?

For technical support, including 1PMT5929BT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5929BT1 requirements.

6.How does Aetrix verify that 1PMT5929BT1 is sourced from the original manufacturer or authorized distributors?

All 1PMT5929BT1 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 1PMT5929BT1 meets industry standards.

7.What is the process for return or replacement of 1PMT5929BT1?

All 1PMT5929BT1 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5929BT1, 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 1PMT5929BT1 part is unused and in its original packaging.

Return procedure for 1PMT5929BT1:

1.Submit a request within 90 days.

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

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