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onsemi 1PMT5934BT1
- Part No.:
- 1PMT5934BT1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5934BT1.pdf
- Description:
- DIODE ZENER 24V 3.2W POWERMITE
- Quantity:
- Payment:
- Shipping:
Inventory:8,786
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Product details
Overview
1PMT5934BT1 from onsemi is a 3.2 W surface-mount Zener diode in the POWERMITE (DO-216AA) package, with nominal Zener voltage 24 V, test current 15.6 mA, dynamic impedance 19 Ω at IZT, and reverse leakage ≤1.0 μA at VR = 18.2 V. It delivers stable voltage regulation in space-constrained portable power rails and ESD-sensitive signal lines.
For engineers reviewing the 1PMT5934BT1 datasheet, pinout, applications, or equivalent options, key selection criteria include its 24 V nominal breakdown, 3.2 W thermal-rated dissipation at cathode tab, 1.1 mm profile, Class 3 HBM ESD rating (>16 kV), and DO-216AA footprint compatibility with high-density PCB layouts.
Technical Context
This device operates as a precision shunt voltage regulator, maintaining stable output voltage across variable load currents via controlled reverse-biased Zener conduction. Its thermal performance relies on direct cathode tab mounting to PCB copper for heat transfer, with RJcathode = 23 °C/W enabling 3.2 W dissipation at Ttab = 75 °C.
Electrical behavior is defined by two critical operating points: IZT = 15.6 mA (for VZ = 22.8–25.2 V) and IZK = 0.25 mA (for ZZK ≤ 700 Ω), supporting both active regulation and low-current reference use. Leakage remains ≤1.0 μA up to 18.2 V, ensuring minimal standby power loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22.8–25.2 V @ IZT = 15.6 mA - defines regulated output range under standard test conditions |
| Power Dissipation | 3.2 W @ cathode tab = 75 °C - enables high-power density regulation without external heatsink |
| Zener Impedance | 19 Ω @ IZT - ensures <1% output deviation for ±1 mA load changes near regulation point |
| Reverse Leakage | ≤1.0 μA @ VR = 18.2 V - guarantees low quiescent current in battery-powered hold-up circuits |
| ESD Rating | HBM Class 3 (>16 kV) - protects downstream circuitry during handling and board-level transient events |
| Package Height | Max 1.1 mm - fits beneath stacked components and within ultra-thin mobile enclosures |
| Thermal Resistance | RJcathode = 23 °C/W - allows direct thermal coupling to PCB copper for efficient heat removal |
Pinout & Package
The 1PMT5934BT1 is housed in the POWERMITE (JEDEC DO-216AA) package - a 1.90 × 1.96 × 1.00 mm surface-mount case with full metallic bottom and integral heat-sink tabs. Cathode is marked by a polarity band and occupies Pin 1 per Style 3 marking diagram.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener anode connection point | Primary thermal path; must be soldered to ≥10 mm² copper pour for rated 3.2 W operation |
| 2 (Anode) | Zener cathode connection point | Reference node; connects to system ground or lower-potential rail in shunt regulator configuration |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile thermal package | 1.1 mm height + full metallic bottom eliminates flux entrapment and enables 50% smaller footprint vs. SMA |
| High ESD robustness | Class 3 HBM (>16 kV) supports direct integration into USB, audio, and sensor interface protection paths |
| Stable low-current regulation | ZZK ≤ 700 Ω @ IZK = 0.25 mA ensures usable reference behavior even in micro-power sleep modes |
| Pb-free & RoHS-compliant | Meets global environmental compliance requirements without derating or process change for lead-free reflow |
Applications
| Portable Power Rail Clamping | USB Interface Overvoltage Protection |
|---|---|
Use Scenario: Clamp 24 V supply rail against surge transients in handheld medical monitors and barcode scanners. IC Role / Device Role / Timing Role: Shunt regulator clamping element placed between rail and ground. Use Value: 3.2 W dissipation capacity absorbs 100 ns/1 A surges without failure; 1.1 mm height avoids interference with display stack-up. | Use Scenario: Protect USB 2.0 D+/D− lines from ESD events in docking stations and peripheral hubs. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor (TVS) configured as back-to-back Zener pair. Use Value: >16 kV HBM rating meets IEC 61000-4-2 Level 4; 19 Ω ZZT limits clamping voltage overshoot during fast transients. |
| Industrial Sensor Reference | Automotive Body Control Module Biasing |
Use Scenario: Provide stable 24 V reference for analog front-end of pressure and temperature sensors in factory automation. IC Role / Device Role / Timing Role: Precision shunt reference source for ADC bias and excitation circuits. Use Value: Tight 22.8–25.2 V tolerance and <1 μA leakage ensure <0.05% reference drift over temperature and time. | Use Scenario: Regulate auxiliary 24 V rail for LIN transceivers and LED drivers in BCM subassemblies. IC Role / Device Role / Timing Role: Primary voltage clamp and stabilization element in non-isolated DC-DC post-regulation stage. Use Value: DO-216AA footprint allows placement adjacent to SOT-23 regulators; RJcathode = 23 °C/W sustains operation at 105 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4748A | Through-hole DO-41 package; 20 W rating but 4.2 mm height; VZ = 22 V ±5% | Requires through-hole assembly and larger board area; unsuitable for ultra-thin designs | Select when legacy through-hole manufacturing or higher pulse power is required |
| MMSZ5242B | SOD-123 package; 500 mW rating; VZ = 22 V ±5%; no cathode-tab thermal path | Limited to low-power biasing; cannot sustain 3.2 W continuous dissipation | Select only for signal-level references where thermal load is <0.5 W |
Compared with 1N4748A and MMSZ5242B, the 1PMT5934BT1 uniquely combines 24 V regulation, 3.2 W thermal capability in a 1.1 mm profile, and DO-216AA surface-mount compatibility-making it the only option for high-density, thermally demanding 24 V clamp applications.
Availability
1PMT5934BT1 is available at Aetrix Electronics and suitable for portable power rail clamping, USB interface overvoltage protection, and industrial sensor reference applications requiring stable component supply and long-term lifecycle support.
Supply support for 1PMT5934BT1 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 specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The 1PMT5934BT1 belongs to the 1PMT5920B Series of high-power-density Zener diodes designed specifically for space-constrained, thermally demanding voltage regulation and transient suppression in portable and industrial electronics.
FAQ
What is the nominal Zener voltage of the 1PMT5934BT1?
The 1PMT5934BT1 has a nominal Zener voltage of 24 V, with a guaranteed range of 22.8 V to 25.2 V when tested at IZT = 15.6 mA. This tolerance ensures reliable regulation in 24 V systems where ±5% variation is acceptable, and the tight spread supports consistent performance across production batches without calibration.
How much power can the 1PMT5934BT1 dissipate continuously?
The 1PMT5934BT1 is rated for 3.2 W continuous DC power dissipation when the cathode tab is maintained at 75 °C. This requires direct thermal connection to ≥10 mm² of 1 oz copper on the PCB. Derating begins above 25 °C ambient at 4.0 mW/°C, reaching zero dissipation at 100 °C ambient under standard mounting conditions.
What package type does the 1PMT5934BT1 use, and how is polarity marked?
The 1PMT5934BT1 uses the POWERMITE package (JEDEC DO-216AA), measuring 1.90 × 1.96 × 1.00 mm. Polarity is marked with a cathode band on the top surface, and Pin 1 (cathode) is oriented toward the sprocket holes in tape-and-reel packaging per onsemi's standard orientation.
Is the 1PMT5934BT1 suitable for ESD protection in high-speed interfaces?
Yes-the 1PMT5934BT1 carries Class 3 HBM ESD rating (>16 kV), making it suitable for board-level ESD protection in USB 2.0, RS-485, and sensor interfaces. Its 19 Ω ZZT and fast response enable effective clamping, though for data-line protection, pairing with a series resistor is recommended to limit peak current during ESD events.
Does the 1PMT5934BT1 meet RoHS and lead-free requirements?
Yes-the 1PMT5934BT1 is Pb-free and RoHS compliant, as confirmed by onsemi's documentation and marking suffix "G" (1PMT5934BT1G). It supports standard lead-free reflow profiles (peak 260 °C for 10 seconds) without derating or reliability impact.
1PMT5934BT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-216AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- ±5%
- Power - Max:
- 3.2 W
- Impedance (Max) (Zzt):
- 19 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 18.2 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
1PMT5934BT1 FAQ
1.How can I place an order for 1PMT5934BT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5934BT1 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 1PMT5934BT1 reliable?
The price and inventory of 1PMT5934BT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5934BT1 is usually 5 days.
3.What payment methods are accepted for 1PMT5934BT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5934BT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5934BT1?
1PMT5934BT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5934BT1 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 1PMT5934BT1?
For technical support, including 1PMT5934BT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5934BT1 requirements.
6.How does Aetrix verify that 1PMT5934BT1 is sourced from the original manufacturer or authorized distributors?
All 1PMT5934BT1 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 1PMT5934BT1 meets industry standards.
7.What is the process for return or replacement of 1PMT5934BT1?
All 1PMT5934BT1 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5934BT1, 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 1PMT5934BT1 part is unused and in its original packaging.
Return procedure for 1PMT5934BT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5934BT1 Tags
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