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Microchip Technology 1PMT5933B/TR7
- Part No.:
- 1PMT5933B/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5933B/TR7.pdf
- Description:
- DIODE ZENER 22V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,767
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Product details
Overview
1PMT5933B/TR7 from Microsemi is a 22 V, ±5% tolerance surface-mount Zener diode in the Powermite® package, rated for 3.0 W DC power dissipation at TAB 1 = 60°C, with 17.5 Ω dynamic impedance at 17 mA test current and 16.7 V minimum reverse voltage, used for precision voltage regulation and overvoltage protection in compact DC power rails.
For engineers reviewing the 1PMT5933B/TR7 datasheet, 1PMT5933B/TR7 pinout, 1PMT5933B/TR7 application, or 1PMT5933B/TR7 equivalent, key selection criteria include zener voltage accuracy, thermal resistance (30°C/W junction-to-TAB), ESD rating (>16 kV HBM), low reverse leakage (≤1 µA at 16.7 V), and compatibility with automated SMT assembly per EIA-481 tape-and-reel packaging.
Technical Context
This Zener diode operates as a two-terminal voltage reference device with cathode designated by TAB 1, requiring no external biasing circuitry. Its full metallic bottom and integral heat sink locking tab enable direct thermal coupling to PCB copper, supporting stable regulation under transient load conditions.
The device is characterized at TL = 30°C with VZ measured 20 seconds after applying DC test current; dynamic impedance (ZZT) is derived using 60 Hz RMS AC current equal to 10% of IZT, and knee impedance (ZZK) is specified at IZK = 0.25 mA - confirming sharp breakdown behavior critical for low-current regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22 V ±5% at IZT = 17 mA - defines nominal regulation point with tight production tolerance suitable for mid-range voltage reference applications. |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables high-power handling in ultra-compact surface-mount form factor without derating penalties typical of smaller packages. |
| Dynamic Impedance (ZZT) | 17.5 Ω at IZT = 17 mA - ensures minimal output voltage variation under changing load currents, critical for stable feedback loops. |
| Thermal Resistance | 30°C/W junction-to-TAB - allows accurate thermal modeling when mounted on copper pour; TAB 1 serves as primary thermal and electrical cathode terminal. |
| ESD Rating | >16 kV per Human Body Model - provides robust handling margin during board assembly and field operation without additional protection circuitry. |
| Reverse Leakage (IR) | ≤1 µA at VR = 16.7 V - guarantees low standby power loss and high impedance in off-state, essential for battery-powered systems. |
Pinout & Package
Package: Powermite® - molded surface-mount package with full metallic bottom and integral heat sink locking tab; cathode designated by TAB 1; mechanical outline conforms to DO-216 standard; weight ≈ 0.016 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary thermal path and electrical cathode connection; must be soldered to copper pour for rated 3.0 W dissipation and thermal resistance of 30°C/W. |
| Lead 2 | Anode | Standard anode terminal; polarity marked by TAB 1 designation; requires no special layout beyond standard SMT pad design per DO-216 footprint. |
Key Features
| Feature | Design Value |
|---|---|
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term reliability and reducing post-assembly cleaning requirements. |
| Integral heat sink locking tab | Provides mechanical anchoring and enhanced thermal conduction to PCB, enabling stable 3.0 W operation without external heatsinking. |
| EIA-481 tape-and-reel packaging | Supports high-speed automated placement with 3,000 units per 7-inch reel - optimized for volume SMT manufacturing lines. |
| Low knee impedance (ZZK) | 650 Ω at IZK = 0.25 mA - ensures predictable turn-on behavior even at microamp-level bias currents, useful in low-power sensing circuits. |
Applications
| Industrial Power Supply Regulation | Automotive ECU Voltage Reference |
|---|---|
Use Scenario: Stabilizing +24 V rail in programmable logic controller (PLC) I/O modules where space is constrained and thermal management is passive. IC Role / Device Role / Timing Role: Two-terminal shunt regulator maintaining precise 22 V reference for analog front-end comparators and ADC bias networks. Use Value: Delivers 3.0 W regulation capability in DO-216 footprint - replacing larger through-hole Zeners while sustaining thermal performance via TAB 1 copper coupling. | Use Scenario: Providing stable reference voltage for engine control unit (ECU) sensor signal conditioning circuits exposed to wide ambient temperature swings (−40°C to +125°C). IC Role / Device Role / Timing Role: Zener clamp protecting microcontroller ADC inputs against transients while delivering repeatable 22 V reference under varying load conditions. Use Value: >16 kV HBM ESD rating and −55°C to +150°C junction temperature range ensure robustness in harsh automotive environments without added TVS stages. |
| Telecom DC-DC Feedback Network | Medical Instrument Overvoltage Protection |
Use Scenario: Setting output voltage in isolated flyback converters for telecom base station power modules where efficiency and board area are critical. IC Role / Device Role / Timing Role: Precision voltage reference in optocoupler feedback loop, directly regulating secondary-side output via TL431-like topology. Use Value: 17.5 Ω dynamic impedance minimizes output voltage drift across line/load variations, improving overall converter regulation accuracy to ±1.5%. | Use Scenario: Clamping high-voltage transients on patient-connected sensor inputs in portable ultrasound devices operating from Li-ion batteries. IC Role / Device Role / Timing Role: Primary overvoltage protection element limiting input voltage to analog front-end amplifiers before signal digitization. Use Value: Low 1 µA reverse leakage at 16.7 V prevents battery drain in always-on monitoring modes, extending operational life between charges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5933BTR | Same 22 V ±5% VZ and 3.0 W rating, but in DO-41 through-hole package; higher thermal resistance (50°C/W) and no metallic bottom. | Requires PCB through-holes and manual/automated axial insertion; unsuitable for dense SMT layouts or high-reliability flux-free assembly. | Select only if legacy through-hole design or thermal constraints allow larger footprint and lower power density. |
| BZX84-C22LT1G | 22 V ±5% SOT-23 package; rated 350 mW only; dynamic impedance 55 Ω at 5 mA; ESD rating 8 kV HBM. | Limited to low-power signal-level clamping; cannot sustain 3.0 W regulation; incompatible with high-current feedback or rail stabilization. | Choose only for space-constrained signal-path protection where power dissipation remains below 350 mW. |
Compared with 1N5933BTR and BZX84-C22LT1G, the 1PMT5933B/TR7 uniquely combines 3.0 W power handling, DO-216 SMT compatibility, 30°C/W thermal resistance, and >16 kV ESD rating - making it the only option for high-density, high-reliability, high-power Zener regulation in modern industrial and automotive PCBs.
Availability
1PMT5933B/TR7 is available at Aetrix Electronics and suitable for industrial power supplies, automotive ECUs, telecom DC-DC converters, and medical instrumentation requiring stable component supply with full traceability and lifecycle support.
Supply support for 1PMT5933B/TR7 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
Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The Powermite® Zener diode product line was engineered to deliver high-power voltage regulation in miniature surface-mount packages - specifically addressing thermal, reliability, and automation challenges in mission-critical power systems.
FAQ
What is the maximum power dissipation rating for the 1PMT5933B/TR7?
The 1PMT5933B/TR7 is rated for 3.0 W DC power dissipation when TAB 1 is maintained at 60°C. This rating assumes proper thermal coupling to PCB copper; derating is required above 60°C ambient or if TAB 1 temperature exceeds specification. The device's 30°C/W junction-to-TAB thermal resistance enables accurate thermal design when mounted on adequate copper area.
How is cathode identification implemented on the 1PMT5933B/TR7?
The cathode of the 1PMT5933B/TR7 is designated by TAB 1 - the large metallic terminal on the package bottom. This is confirmed in the mechanical specifications section of the MSC0995 datasheet and is consistent across the 1PMT5913B–1PMT5956B series. TAB 1 must be connected to the lower-potential node (e.g., ground or return path) in shunt regulator configurations.
Does the 1PMT5933B/TR7 meet any specific ESD standards?
Yes, the 1PMT5933B/TR7 has an ESD rating exceeding 16 kV per the Human Body Model (HBM), as stated in the FEATURES section of the MSC0995 datasheet. This rating applies to both terminals and reflects robustness during handling, PCB assembly, and end-use operation - eliminating need for supplemental ESD protection in many applications.
What is the reverse leakage current specification for the 1PMT5933B/TR7?
The 1PMT5933B/TR7 specifies a maximum reverse leakage current (IR) of 1 µA at a reverse voltage (VR) of 16.7 V, measured at TL = 30°C. This low leakage supports energy-efficient designs, especially in battery-operated or always-on systems where standby current must be minimized without compromising regulation accuracy.
Is the 1PMT5933B/TR7 supplied in tape-and-reel format compatible with automated pick-and-place equipment?
Yes, the 1PMT5933B/TR7 is packaged per EIA Standard 481 in tape-and-reel format - 3,000 units per 7-inch reel. Its Powermite® package geometry and orientation are validated for compatibility with standard SMT placement equipment, including support for automatic insertion and reflow soldering without flux entrapment due to its full metallic bottom design.
1PMT5933B/TR7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-216AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- ±5%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 17.5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 16.7 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-216AA
1PMT5933B/TR7 FAQ
1.How can I place an order for 1PMT5933B/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5933B/TR7 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 1PMT5933B/TR7 reliable?
The price and inventory of 1PMT5933B/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5933B/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5933B/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5933B/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5933B/TR7?
1PMT5933B/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5933B/TR7 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 1PMT5933B/TR7?
For technical support, including 1PMT5933B/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5933B/TR7 requirements.
6.How does Aetrix verify that 1PMT5933B/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5933B/TR7 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 1PMT5933B/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5933B/TR7?
All 1PMT5933B/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5933B/TR7, 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 1PMT5933B/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5933B/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5933B/TR7 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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