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onsemi 1PMT5927BT1
- Part No.:
- 1PMT5927BT1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5927BT1.pdf
- Description:
- DIODE ZENER 12V 3.2W POWERMITE
- Quantity:
- Payment:
- Shipping:
Inventory:2,617
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Product details
Overview
1PMT5927BT1 from onsemi is a 12 V, 3.2 W surface-mount Zener diode in the POWERMITE® (DO−216AA) package, rated for 31.2 mA test current, 9.1 Ω dynamic impedance at IZT, and 0.25 µA reverse leakage at 9.1 V, used for precision voltage regulation in space-constrained portable electronics.
For engineers reviewing the 1PMT5927BT1 datasheet, pinout, applications, or equivalent options, key selection factors include its 12 V nominal Zener voltage with ±5% tolerance, 3.2 W power dissipation at cathode tab temperature of 75°C, low 1.1 mm profile, and Class 3 ESD rating (>16 kV HBM).
Technical Context
This device operates as a two-terminal voltage reference regulator, maintaining stable reverse-biased conduction above its 11.4–12.6 V breakdown range. Its thermal design relies on direct cathode tab heat sinking to PCB copper, achieving 23°C/W junction-to-cathode thermal resistance.
The 1PMT5927BT1 exhibits a positive temperature coefficient near 12 V (typical +2.5 mV/°C), low 550 Ω dynamic impedance at 0.25 mA IZK, and is characterized with VF ≤ 1.25 V at 200 mA forward current - confirming suitability for bidirectional protection and clamping roles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.4–12.6 V @ 31.2 mA - defines regulated output voltage window under nominal bias |
| Power Dissipation | 3.2 W @ cathode tab = 75°C - enables high-power density regulation without external heatsink |
| Zener Impedance (ZZT) | 9.1 Ω @ IZT - ensures minimal output voltage shift under load transients |
| Reverse Leakage (IR) | 0.25 µA @ 9.1 V - guarantees low quiescent current in standby or battery-powered circuits |
| ESD Rating | Class 3 (>16 kV HBM) - provides robust handling and system-level ESD immunity without added protection |
| Package | POWERMITE® (DO−216AA), 8.45 mm² footprint, 1.1 mm max height - supports ultra-compact PCB layouts |
Pinout & Package
Package: POWERMITE® (JEDEC DO−216AA), molded plastic case with full metallic bottom, integral heat sink tabs, cathode indicated by polarity band. Dimensions: 1.75–2.05 mm × 1.75–2.18 mm × max 1.1 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Primary heat path to PCB; must be connected to thermal pad for rated 3.2 W dissipation |
| 2 | Anode | Reference node for reverse-bias operation; low-inductance connection improves transient response |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile thermal package | 1.1 mm max height with full metallic bottom - eliminates flux entrapment and enables 0.5 mm clearance routing underneath |
| High ESD robustness | Class 3 (>16 kV HBM) - reduces need for external TVS in handheld interface lines |
| Small footprint area | 8.45 mm² - saves >50% board space vs. SMA while matching thermal performance |
| Pb-free option | G-suffix variant available - supports RoHS-compliant manufacturing without requalification |
Applications
| Battery Voltage Monitoring | USB Port Overvoltage Clamp |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage in portable medical devices where space and self-heating are critical. IC Role / Device Role / Timing Role: Precision shunt reference providing stable 12 V threshold for comparator input. Use Value: Tight 11.4–12.6 V tolerance and low 0.25 µA leakage extend battery life and improve ADC reference accuracy. | Use Scenario: Protecting USB 2.0 data lines and VBUS against ESD and transient overvoltage events. IC Role / Device Role / Timing Role: Bidirectional clamping diode placed between signal line and 12 V rail or ground. Use Value: Class 3 ESD rating and 9.1 Ω ZZT ensure fast clamping with minimal signal distortion during 8 kV contact discharge. |
| DC-DC Feedback Reference | Industrial Sensor Excitation |
Use Scenario: Setting output voltage of isolated flyback converters in factory automation controllers. IC Role / Device Role / Timing Role: Secondary-side shunt regulator controlling optocoupler LED current in feedback loop. Use Value: 3.2 W power rating allows direct regulation without series resistor, simplifying BOM and improving loop stability. | Use Scenario: Providing stable excitation voltage to 4–20 mA current-loop pressure sensors in harsh environments. IC Role / Device Role / Timing Role: Low-drift Zener reference sourcing constant current through sensor bridge. Use Value: Positive tempco near 12 V compensates for typical silicon strain gauge drift, reducing system-level calibration burden. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4742A | DO-41 package, 12 V ±5%, 1 W rating, 22 Ω ZZT @ 21 mA | Larger footprint (5.2 mm² vs. 8.45 mm²), lower power, no Class 3 ESD rating | Choose when legacy through-hole assembly or lower cost is prioritized over size and ESD robustness |
| MMSZ5242B | SOD-123, 12 V ±5%, 500 mW, 30 Ω ZZT @ 20 mA, 100 nA IR @ 9.1 V | Lower power, higher leakage, smaller thermal mass - unsuitable for sustained 3.2 W operation | Choose only for low-current biasing or space-limited non-power applications; not drop-in for 1PMT5927BT1 thermal loads |
Compared with 1N4742A and MMSZ5242B, the 1PMT5927BT1 delivers 3.2× higher power density in a surface-mount package with industry-leading ESD immunity and thermal performance - making it the preferred choice for modern compact, high-reliability power regulation designs.
Availability
1PMT5927BT1 is available at Aetrix Electronics and suitable for battery management systems, USB interface protection, DC-DC converter feedback loops, and industrial sensor excitation requiring stable component supply across high-mix production runs.
Supply support for 1PMT5927BT1 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, and consumer markets.
The 1PMT5920B Series was designed specifically for high-density, thermally demanding Zener regulation in portable and space-constrained electronics - emphasizing miniaturization, thermal efficiency, and robustness without sacrificing electrical performance.
FAQ
What is the nominal Zener voltage and tolerance of the 1PMT5927BT1?
The 1PMT5927BT1 has a nominal Zener voltage of 12 V with a guaranteed range of 11.4 V to 12.6 V at 31.2 mA test current (IZT), corresponding to a ±5% tolerance. This specification is measured under thermal equilibrium at 25°C ambient and is validated per the onsemi 1PMT5920B/D datasheet revision 3.
How much power can the 1PMT5927BT1 safely dissipate in a typical PCB layout?
The 1PMT5927BT1 is rated for 3.2 W DC power dissipation when the cathode tab (Pin 1) is maintained at 75°C - achievable using recommended minimum copper pad area on FR-4 PCB. Derating begins above 25°C ambient at 4.0 mW/°C, and junction-to-cathode thermal resistance is 23°C/W, enabling reliable operation in thermally constrained designs.
Does the 1PMT5927BT1 have an ESD rating, and what standard does it meet?
Yes, the 1PMT5927BT1 meets Human Body Model (HBM) Class 3 ESD rating with >16 kV withstand capability. This is confirmed in the official onsemi datasheet and reflects built-in process-level protection - eliminating the need for additional ESD components in many portable and interface applications.
What is the forward voltage and maximum forward current for the 1PMT5927BT1?
The 1PMT5927BT1 has a maximum forward voltage (VF) of 1.25 V at 200 mA forward current (IF), as specified in the onsemi datasheet under TL = 30°C conditions. This forward characteristic supports use in bidirectional clamping and polarity-sensitive protection schemes.
Is the 1PMT5927BT1 available in a lead-free version, and how is it marked?
Yes, the Pb-free version is designated as 1PMT5927BT1G and carries the same electrical and thermal specifications. It is marked identically to the standard part (27B) and complies with RoHS Directive 2011/65/EU - verified via onsemi's official packaging and compliance documentation.
1PMT5927BT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-216AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 12 V
- Tolerance:
- ±5%
- Power - Max:
- 3.2 W
- Impedance (Max) (Zzt):
- 6.5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 9.1 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
1PMT5927BT1 FAQ
1.How can I place an order for 1PMT5927BT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5927BT1 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 1PMT5927BT1 reliable?
The price and inventory of 1PMT5927BT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5927BT1 is usually 5 days.
3.What payment methods are accepted for 1PMT5927BT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5927BT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5927BT1?
1PMT5927BT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5927BT1 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 1PMT5927BT1?
For technical support, including 1PMT5927BT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5927BT1 requirements.
6.How does Aetrix verify that 1PMT5927BT1 is sourced from the original manufacturer or authorized distributors?
All 1PMT5927BT1 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 1PMT5927BT1 meets industry standards.
7.What is the process for return or replacement of 1PMT5927BT1?
All 1PMT5927BT1 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5927BT1, 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 1PMT5927BT1 part is unused and in its original packaging.
Return procedure for 1PMT5927BT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5927BT1 Tags
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