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onsemi 1PMT5933BT1
- Part No.:
- 1PMT5933BT1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5933BT1.pdf
- Description:
- DIODE ZENER 22V 3.2W POWERMITE
- Quantity:
- Payment:
- Shipping:
Inventory:7,948
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Product details
Overview
1PMT5933BT1 from onsemi is a 22 V, 3.2 W surface-mount Zener diode in the POWERMITE® (DO−216AA) package, with nominal Zener voltage 22 V (min 20.9 V, max 23.1 V), test current 17 mA, dynamic impedance 16.7 Ω at IZT, and leakage current ≤0.25 µA at VR = 17.5 V. It serves as a precision voltage reference or overvoltage clamp in portable power rails.
For engineers reviewing the 1PMT5933BT1 datasheet, pinout, applications, or equivalent options, key selection criteria include its 22 V regulation tolerance, 3.2 W cathode-tab power rating at 75°C, 1.1 mm profile, ESD robustness (>16 kV HBM), and DO−216AA footprint compatibility with space-constrained PCB layouts.
Technical Context
This device operates as a silicon planar Zener diode with controlled avalanche breakdown, optimized for stable DC voltage regulation under reverse bias. Its thermal design centers on the cathode tab (Terminal 1) as primary heat path, delivering 23°C/W junction-to-cathode resistance and enabling 3.2 W dissipation when tab temperature is held at 75°C.
Electrical behavior is defined by two critical operating points: Zener test condition (IZT = 17 mA, VZ = 22 V ±4.5%) and knee region (IZK = 0.25 mA, ZZK = 650 Ω), with low leakage (<0.25 µA at 17.5 V) ensuring minimal standby current draw in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22 V nominal (20.9–23.1 V range); defines regulated output voltage under 17 mA test current |
| Power Dissipation | 3.2 W at cathode tab = 75°C; enables high-power clamping without external heatsink |
| Zener Impedance (ZZT) | 16.7 Ω @ IZT = 17 mA; ensures <0.3 V regulation deviation across load current changes |
| Leakage Current (IR) | ≤0.25 µA @ VR = 17.5 V; minimizes quiescent drain in always-on circuits |
| ESD Rating | Class 3 (>16 kV HBM); protects against handling-induced damage during assembly |
| Package Height | Max 1.1 mm; fits under compact shields and in ultra-thin handheld enclosures |
| Footprint Area | 8.45 mm²; 50% smaller than SMA while matching thermal performance |
Pinout & Package
The 1PMT5933BT1 is housed in the POWERMITE® (JEDEC DO−216AA) surface-mount plastic package, featuring a full metallic bottom for solderability and integral heat-sink tabs. Thermal performance relies on cathode (Terminal 1) mounting to copper pour or thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Main heat path and voltage reference node; must be connected to thermal plane for rated 3.2 W operation |
| 2 | Anode | Ground or low-impedance return path; polarity band on package identifies Terminal 1 as cathode |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile DO−216AA package | 1.1 mm max height enables use in <9 mm thick consumer devices like Bluetooth earbuds |
| Full metallic bottom | Eliminates flux entrapment during reflow, improving solder joint reliability and voiding control |
| Integral heat-sink tabs | Enables direct thermal coupling to PCB copper without discrete thermal vias or paste |
| Pb−Free option (1PMT5933BT1G) | Complies with RoHS Directive 2011/65/EU without derating or performance trade-off |
Applications
| Battery Protection Circuit | USB Power Delivery Clamp |
|---|---|
Use Scenario: Clamping transient overvoltage on Li-ion battery charge path during hot-plug events. IC Role / Device Role / Timing Role: Zener voltage clamp placed between battery+ and ground, conducting only above 22 V threshold. Use Value: Prevents >23.1 V stress on protection ICs and cell anodes, leveraging 0.25 µA leakage to avoid battery drain. | Use Scenario: Regulating 20 V PP output in USB PD 3.0 sink applications where 22 V margin is required. IC Role / Device Role / Timing Role: Precision shunt reference for feedback loop of buck-boost controller monitoring VBUS. Use Value: 16.7 Ω dynamic impedance ensures <340 mV error across 10–20 mA load variation, meeting USB PD ripple spec. |
| Portable Medical Sensor Supply | Industrial IoT Node Reference |
Use Scenario: Providing stable 22 V bias for MEMS pressure sensor excitation in handheld diagnostic tools. IC Role / Device Role / Timing Role: Low-noise voltage reference source with minimal thermal drift in ambient temperature swings. Use Value: 22 V ±4.5% tolerance and <0.25 µA leakage preserve accuracy and battery life over −20°C to +60°C operating range. | Use Scenario: Overvoltage protection for 24 V DC input rail in edge-node gateways exposed to field wiring transients. IC Role / Device Role / Timing Role: Primary crowbar device triggered by sustained >23.1 V conditions on main supply bus. Use Value: 3.2 W cathode-tab rating allows single-device clamping of 100 ms surge events without derating or parallel devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4742A | DO−41 through-hole package; 12 V Zener; 1 W rating; no cathode-tab thermal path | Requires PCB hole drilling and lacks surface-mount scalability; unsuitable for automated SMT lines | Select only for legacy through-hole designs where board real estate and thermal budget allow |
| MMSZ5242B | SOD−123 package; 12 V Zener; 500 mW rating; 1.3 mm height; 3.5 mm² footprint | Lower power and voltage rating; insufficient for 22 V, 3.2 W clamping; used in signal-level biasing | Choose for low-current references where 22 V and 3.2 W capability are not required |
Compared with 1N4742A and MMSZ5242B, the 1PMT5933BT1 uniquely delivers 22 V regulation in a 1.1 mm, 3.2 W DO−216AA package-enabling compact, high-power clamping unattainable with either alternative's thermal or voltage specifications.
Availability
1PMT5933BT1 is available at Aetrix Electronics and suitable for battery protection circuits, USB Power Delivery clamp designs, portable medical sensor supplies, and industrial IoT node references requiring stable component supply and consistent Zener voltage performance.
Supply support for 1PMT5933BT1 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 technologies for automotive, industrial, cloud, and intelligent edge applications.
The 1PMT5920B Series-including 1PMT5933BT1-is engineered for high-density, thermally constrained power management in portable and battery-operated systems, emphasizing miniaturization without sacrificing power handling or reliability.
FAQ
What is the Zener voltage tolerance of the 1PMT5933BT1?
The 1PMT5933BT1 has a Zener voltage specification of 20.9 V (minimum), 22 V (nominal), and 23.1 V (maximum) at IZT = 17 mA and TL = 25°C. This ±4.5% tolerance ensures predictable regulation across production lots and supports designs requiring tight voltage margins without post-production trimming. The 1PMT5933BT1 maintains this tolerance under thermal equilibrium conditions per the official onsemi datasheet Rev. 3.
How is thermal performance achieved in the 1PMT5933BT1's POWERMITE package?
The 1PMT5933BT1 achieves 3.2 W power dissipation by routing heat primarily through the cathode terminal (Terminal 1) to a PCB copper pour, with a specified junction-to-cathode thermal resistance of 23°C/W. Its full metallic bottom and integral heat-sink tabs eliminate flux entrapment and enhance thermal transfer-unlike standard SOD packages. The 1PMT5933BT1 requires no additional thermal vias if mounted per recommended pad layout in the datasheet.
Is the 1PMT5933BT1 suitable for Pb−Free reflow assembly?
Yes-the 1PMT5933BT1 is compatible with Pb−Free reflow processes, with a maximum soldering temperature of 260°C for 10 seconds. The "G" suffix variant (1PMT5933BT1G) denotes the Pb−Free version, but both versions share identical electrical and thermal specs. The 1PMT5933BT1's corrosion-resistant finish and solderable leads meet J-STD-020 moisture sensitivity level 1 requirements.
What is the leakage current specification for the 1PMT5933BT1 at 17.5 V reverse bias?
The 1PMT5933BT1 exhibits a maximum reverse leakage current of 0.25 µA at VR = 17.5 V and TL = 25°C. This ultra-low leakage preserves battery life in always-on applications such as portable medical sensors or IoT wake-up circuits. The 1PMT5933BT1's leakage remains well below 1 µA up to 80% of its Zener voltage, supporting energy-sensitive designs.
Does the 1PMT5933BT1 have ESD protection built-in?
Yes-the 1PMT5933BT1 is rated Class 3 per Human Body Model (HBM) with >16 kV ESD withstand capability. This intrinsic protection eliminates the need for external TVS devices in handling and assembly stages, reducing BOM count and board area. The 1PMT5933BT1's robustness is inherent to its planar Zener structure and packaging, verified per ANSI/ESDA/JEDEC JS-001.
1PMT5933BT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-216AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- ±5%
- Power - Max:
- 3.2 W
- Impedance (Max) (Zzt):
- 17.5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 16.7 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
1PMT5933BT1 FAQ
1.How can I place an order for 1PMT5933BT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5933BT1 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 1PMT5933BT1 reliable?
The price and inventory of 1PMT5933BT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5933BT1 is usually 5 days.
3.What payment methods are accepted for 1PMT5933BT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5933BT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5933BT1?
1PMT5933BT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5933BT1 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 1PMT5933BT1?
For technical support, including 1PMT5933BT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5933BT1 requirements.
6.How does Aetrix verify that 1PMT5933BT1 is sourced from the original manufacturer or authorized distributors?
All 1PMT5933BT1 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 1PMT5933BT1 meets industry standards.
7.What is the process for return or replacement of 1PMT5933BT1?
All 1PMT5933BT1 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5933BT1, 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 1PMT5933BT1 part is unused and in its original packaging.
Return procedure for 1PMT5933BT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5933BT1 Tags
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