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Microchip Technology 1PMT5929B/TR7
- Part No.:
- 1PMT5929B/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5929B/TR7.pdf
- Description:
- DIODE ZENER 15V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,869
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Product details
Overview
1PMT5929B/TR7 from Microsemi is a 15 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 9.0 Ω dynamic impedance at 25 mA test current and 600 µA max reverse leakage at 11.4 V. It serves as a precision voltage reference or overvoltage clamp in DC power rails and regulator feedback paths.
For engineers reviewing the 1PMT5929B/TR7 datasheet, 1PMT5929B/TR7 pinout, 1PMT5929B/TR7 application, or 1PMT5929B/TR7 equivalent, key selection criteria include its 15 V nominal Zener voltage, 3.0 W thermal capability via metallic tab, DO-216 mechanical outline, ESD rating >16 kV HBM, and compatibility with automated SMT placement equipment.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage regulation under varying load and temperature conditions. Its Powermite® package integrates a full metallic bottom (TAB 1) as both cathode terminal and thermal path, enabling 30°C/W junction-to-tab thermal resistance and eliminating solder flux entrapment during reflow.
The device exhibits low knee impedance (ZZK = 0.25 Ω) and tight dynamic impedance control (ZZT = 9.0 Ω @ IZT = 25 mA), supporting stable regulation across current deviations. Reverse leakage remains ≤600 µA at VR = 11.4 V, ensuring minimal quiescent power loss in standby circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 15 V ±5% at IZT = 25 mA - defines regulated output voltage in shunt regulator or reference circuits |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables high-power clamping without external heatsink |
| Dynamic Impedance ZZT | 9.0 Ω @ 25 mA - ensures <135 mV output variation per 15 mA load change |
| Reverse Leakage IR | ≤600 µA @ VR = 11.4 V - minimizes standby current in battery-powered systems |
| Thermal Resistance | 30°C/W junction-to-TAB1 - allows direct thermal coupling to PCB copper pour or metal chassis |
| ESD Rating | >16 kV HBM - provides robust handling in automated assembly and field environments |
| Knee Current IZK | 0.25 mA - enables usable regulation down to ultra-low-current bias networks |
Pinout & Package
Package: Powermite® (DO-216), molded surface-mount package with full metallic bottom (TAB 1) serving as cathode and primary thermal interface. Dimensions conform to DO-216 outline; weight ≈ 0.016 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary current return path and thermal conduction surface; must be soldered to copper pour for rated 3.0 W operation |
| Lead 2 | Anode | Standard anode connection; electrically isolated from TAB 1; used for forward bias or reverse-bias mounting |
Key Features
| Feature | Design Value |
|---|---|
| Integral heat sink locking tab | Mechanically anchors device during reflow and conducts heat directly from junction to PCB via TAB 1 |
| Full metallic bottom | Eliminates solder flux entrapment risk and ensures repeatable thermal performance across production lots |
| Automated insertion compatibility | DO-216 footprint and symmetric geometry support high-speed pick-and-place with standard nozzles |
| Tight Zener tolerance option | ±1% (suffix D) and ±2% (suffix C) available - supports precision feedback loops in switching regulators |
Applications
| DC Power Rail Clamping | Switching Regulator Feedback |
|---|---|
Use Scenario: Protecting 12 V automotive ECUs against load dump transients up to 40 V. IC Role / Device Role / Timing Role: Shunt clamping device placed across input rail to clamp voltage to 15 V before it reaches downstream LDOs or microcontrollers. Use Value: Leverages 3.0 W rating and 30°C/W thermal resistance to absorb transient energy without derating or external heatsink. | Use Scenario: Setting precise output voltage in isolated flyback converters using optocoupler feedback. IC Role / Device Role / Timing Role: Zener reference on secondary side that biases optocoupler LED to regulate primary-side controller. Use Value: 9.0 Ω dynamic impedance ensures stable regulation despite LED current variations, improving output accuracy. |
| Battery Management Protection | Industrial Sensor Signal Conditioning |
Use Scenario: Overvoltage protection for Li-ion battery monitoring ICs in portable medical devices. IC Role / Device Role / Timing Role: Clamp diode connected between battery+ and ground to prevent >15 V exposure during charging faults. Use Value: 600 µA max reverse leakage at 11.4 V preserves battery life; >16 kV HBM withstands ESD events during handling. | Use Scenario: Providing stable 15 V reference for 4–20 mA transmitter loop-powered sensors. IC Role / Device Role / Timing Role: Precision voltage reference sourcing bias current for op-amp signal conditioning stages. Use Value: ±5% tolerance and low ZZT ensure reference stability across temperature and supply ripple, reducing sensor calibration drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor 1N5929B | Same 15 V/3.0 W rating but in DO-41 through-hole package; higher thermal resistance (50°C/W) | Requires PCB hole drilling and wave soldering; unsuitable for high-density SMT layouts | Select only when legacy through-hole assembly or manual repair is required |
| Vishay MMBZ5245B | 15 V/500 mW in SOT-23; 10× lower power rating; 25 Ω dynamic impedance | Limited to low-power signal-level clamping; cannot replace 1PMT5929B/TR7 in power rail protection | Choose only for space-constrained signal-path references where 3.0 W capability is unnecessary |
Compared with 1N5929B and MMBZ5245B, the 1PMT5929B/TR7 uniquely combines SMT compatibility, 3.0 W dissipation, and DO-216 mechanical robustness-making it the only viable choice for automated, high-reliability power-rail clamping in automotive and industrial designs.
Availability
1PMT5929B/TR7 is available at Aetrix Electronics and suitable for DC power rail clamping, switching regulator feedback, and battery management protection requiring stable component supply, consistent Zener voltage tolerance, and high ESD immunity.
Supply support for 1PMT5929B/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 family-including 1PMT5929B/TR7-is engineered for ruggedized surface-mount voltage regulation in harsh-environment power systems where thermal performance, ESD resilience, and automated manufacturability are critical.
FAQ
What is the Zener voltage tolerance for 1PMT5929B/TR7?
The 1PMT5929B/TR7 has a standard Zener voltage tolerance of ±5% at 15 V nominal, measured at 25 mA test current and TAB 1 temperature of 30°C. Tighter tolerances of ±2% (suffix C) and ±1% (suffix D) are available as custom order options. This tolerance directly impacts regulation accuracy in feedback and reference applications.
How is thermal management handled in the 1PMT5929B/TR7 package?
The 1PMT5929B/TR7 uses its metallic TAB 1 as both cathode terminal and primary thermal path, achieving 30°C/W junction-to-tab thermal resistance. To realize the full 3.0 W rating, TAB 1 must be soldered to ≥1 cm² of 2-oz copper pour. Without adequate copper area, power derating is required per the thermal curve in MSC0995.PDF.
Is the 1PMT5929B/TR7 compatible with lead-free reflow processes?
Yes, the 1PMT5929B/TR7 is qualified for lead-free reflow per JEDEC J-STD-020. Its molded Powermite® package withstands peak temperatures up to 260°C for 10 seconds. The full metallic bottom also prevents voiding and improves wetting reliability during Pb-free soldering, unlike plastic-bodied alternatives.
What does the "/TR7" suffix indicate in 1PMT5929B/TR7?
The "/TR7" suffix denotes tape-and-reel packaging per EIA-481 standard, with 3,000 units per 7-inch reel. This format is optimized for high-speed SMT placement equipment and ensures consistent orientation (cathode TAB 1 facing designated direction) and static-safe handling. It does not affect electrical specifications.
Can the 1PMT5929B/TR7 be used in bidirectional ESD protection?
No, the 1PMT5929B/TR7 is a unidirectional Zener diode configured for reverse-bias operation only. Its circuit symbol and mechanical marking (cathode on TAB 1) confirm polarity-specific use. For bidirectional ESD protection, a dedicated TVS array such as Microchip's USBLC6-2SC6 would be required instead of 1PMT5929B/TR7.
1PMT5929B/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):
- 15 V
- Tolerance:
- ±5%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 8 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 11.4 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
1PMT5929B/TR7 FAQ
1.How can I place an order for 1PMT5929B/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5929B/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 1PMT5929B/TR7 reliable?
The price and inventory of 1PMT5929B/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5929B/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5929B/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5929B/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5929B/TR7?
1PMT5929B/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5929B/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 1PMT5929B/TR7?
For technical support, including 1PMT5929B/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5929B/TR7 requirements.
6.How does Aetrix verify that 1PMT5929B/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5929B/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 1PMT5929B/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5929B/TR7?
All 1PMT5929B/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5929B/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 1PMT5929B/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5929B/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5929B/TR7 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZT52C15-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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SMAZ12-13-F
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