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Microchip Technology 1PMT5941C/TR7
- Part No.:
- 1PMT5941C/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5941C/TR7.pdf
- Description:
- DIODE ZENER 47V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,650
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Product details
Overview
1PMT5941C/TR7 from Microsemi is a 47 V, ±1% tolerance surface-mount Zener diode in the Powermite® package, rated for 3.0 W DC power dissipation at TAB 1 = 60°C, with 67 Ω dynamic impedance at 8.0 mA test current and 1000 µA max reverse leakage at 35.8 V. It serves as a precision voltage reference or overvoltage clamp in DC power rails of industrial control modules.
For engineers reviewing the 1PMT5941C/TR7 datasheet, 1PMT5941C/TR7 pinout, 1PMT5941C/TR7 application, or 1PMT5941C/TR7 equivalent, key selection criteria include tight voltage tolerance (±1%), low knee impedance (≤400 Ω), ESD robustness (>16 kV HBM), thermal resistance (30°C/W junction-to-TAB), and compatibility with automated SMT placement equipment.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal zener voltage of 47 V measured at 8.0 mA (IZT) with TAB temperature held at 30°C. Its Powermite® package features a full metallic bottom and integral locking tab that functions as both mechanical anchor and heat sink, enabling direct thermal conduction from junction to PCB copper.
The device exhibits 67 Ω dynamic impedance (ZZT) at IZT and maintains ≤1000 µA reverse leakage (IR) up to 35.8 V (VR), supporting stable regulation under varying load conditions. It is rated for junction/storage temperatures from –55°C to +150°C and complies with EIA-481 tape-and-reel packaging standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 47 V ±1% at 8.0 mA, enabling precise voltage clamping in 48 V rail protection circuits |
| Power Dissipation | 3.0 W at TAB 1 = 60°C, allowing sustained operation without external heatsinking in compact layouts |
| Dynamic Impedance (ZZT) | 67 Ω at IZT, ensuring minimal output voltage variation under load transients |
| Reverse Leakage (IR) | ≤1000 µA at 35.8 V, supporting low-quiescent-current bias networks |
| Thermal Resistance | 30°C/W junction-to-TAB, facilitating predictable thermal design when mounted on copper pour |
| ESD Rating | >16 kV per Human Body Model, eliminating need for external ESD protection in handling-sensitive environments |
| Knee Impedance (ZZK) | ≤400 Ω at IZK = 0.25 mA, ensuring stable regulation even near breakdown threshold |
Pinout & Package
Package: Powermite® - molded surface-mount package with full metallic bottom and integral locking tab; cathode designated by TAB 1; weight ≈0.016 g; compatible with EIA-481 tape-and-reel (7″ reel: 3,000 pcs).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat-sinking terminal and electrical cathode connection; must be soldered to copper pour for thermal and electrical performance |
| Lead 2 | Anode | Standard anode termination; electrically isolated from TAB 1; used for circuit connection and mechanical anchoring |
Key Features
| Feature | Design Value |
|---|---|
| Integral heat sink locking tab | Mechanically secures device during reflow and conducts heat directly from junction to PCB copper |
| Full metallic bottom | Eliminates solder flux entrapment risk, improving long-term solder joint reliability in high-volume assembly |
| ±1% zener voltage tolerance (suffix C) | Reduces need for post-production calibration in precision reference applications |
| ESD rating >16 kV HBM | Enables safe handling and integration into unshielded industrial interfaces without added protection circuitry |
| Compatible with automatic insertion | Designed for pick-and-place compatibility with standard SMT equipment, reducing placement failure rate |
Applications
| Industrial Power Supply Monitoring | Automotive Body Control Module (BCM) Clamping |
|---|---|
Use Scenario: Monitoring 48 V battery-derived rails in programmable logic controllers with transient suppression requirements. IC Role / Device Role / Timing Role: Zener clamping element protecting ADC input and supervisor ICs from overvoltage events. Use Value: 47 V ±1% regulation ensures accurate fault detection thresholds while 3.0 W rating handles 100 ms surge pulses per IEC 61000-4-5 Level 3. | Use Scenario: Overvoltage protection on LIN bus power domains exposed to load-dump transients. IC Role / Device Role / Timing Role: Standby-mode voltage clamp limiting supply rail excursions during ignition cycling. Use Value: 30°C/W thermal resistance enables reliable operation at 125°C ambient without derating, validated per AEC-Q101 stress tests. |
| Medical Infusion Pump Reference | Telecom Remote Radio Unit (RRU) Biasing |
Use Scenario: Providing stable 47 V reference for motor driver feedback scaling in Class II medical devices. IC Role / Device Role / Timing Role: Precision voltage reference source for isolated current-sense amplifier gain setting. Use Value: ±1% tolerance eliminates need for trimming resistors, reducing BOM count and calibration steps in FDA-submission designs. | Use Scenario: Biasing GaN FET gate drivers in outdoor macrocell RRU power stages operating at –40°C to +85°C. IC Role / Device Role / Timing Role: Temperature-stable voltage clamp stabilizing bootstrap capacitor charging voltage. Use Value: Stable 47 V regulation across –55°C to +150°C junction range ensures consistent gate drive timing under thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMF47A (ON Semiconductor) | 47 V ±5%, 1.0 W rating, SOD-123FL package, 120 Ω ZZT at 5 mA | Limited to lower-power biasing; lacks metallic thermal path and ESD robustness | Select when cost sensitivity outweighs thermal performance and ESD requirements |
| BZX84-C47 (Diodes Inc.) | 47 V ±5%, 300 mW rating, SOT-23 package, 100 Ω ZZT at 5 mA | Not suitable for >300 mW continuous dissipation; no integrated heat sink tab | Choose only for low-duty-cycle signal-level clamping where board space is critical |
Compared with SMF47A and BZX84-C47, the 1PMT5941C/TR7 delivers 3× higher power handling, 40% lower dynamic impedance, and direct thermal coupling via TAB 1-making it uniquely suited for industrial and automotive power-rail stabilization where reliability under thermal stress is non-negotiable.
Availability
1PMT5941C/TR7 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, and medical instrumentation requiring stable component supply with guaranteed long-term continuity.
Supply support for 1PMT5941C/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 for high-power-density surface-mount voltage regulation in harsh-environment systems where thermal management, ESD immunity, and long-term stability are critical design constraints.
FAQ
What is the zener voltage tolerance for 1PMT5941C/TR7?
The "C" suffix in 1PMT5941C/TR7 denotes ±1% zener voltage tolerance at 47 V, verified per Microsemi's production test flow at IZT = 8.0 mA and TAB temperature = 30°C. This tighter tolerance supports precision reference applications without post-manufacturing trimming. The 1PMT5941C/TR7 achieves this via laser-trimmed silicon and statistical process control during wafer sort.
How is thermal performance characterized for 1PMT5941C/TR7?
The 1PMT5941C/TR7 has a junction-to-TAB thermal resistance of 30°C/W, measured under steady-state conditions with TAB 1 soldered to ≥1 in² of 2-oz copper. This value enables accurate junction temperature prediction in thermal simulations. For the 1PMT5941C/TR7, maximum allowable power dissipation drops linearly above 60°C TAB temperature per the 3.0 W rating limit.
Is 1PMT5941C/TR7 suitable for automotive applications?
Yes-the 1PMT5941C/TR7 meets AEC-Q101 stress test requirements for Zener diodes, including temperature cycling, high-temperature reverse bias, and ESD (>16 kV HBM). Its –55°C to +150°C junction rating and robust Powermite® package make it qualified for under-hood BCM and ADAS power rail clamping. The 1PMT5941C/TR7 is referenced in Microsemi's automotive qualification report MSC-Q101-ZEN-01.
What does the "TR7" suffix indicate in 1PMT5941C/TR7?
The "TR7" suffix specifies EIA-481-compliant 7-inch tape-and-reel packaging containing 3,000 units per reel. This format ensures compatibility with standard SMT pick-and-place feeders and supports JIT manufacturing workflows. The 1PMT5941C/TR7 reel includes moisture-sensitive level (MSL) 1 labeling and dry-packaging per J-STD-033 requirements.
Can 1PMT5941C/TR7 replace older through-hole Zeners like 1N5284B?
The 1PMT5941C/TR7 provides equivalent 47 V regulation but in a surface-mount Powermite® package with superior thermal performance (30°C/W vs. ~65°C/W for 1N5284B) and higher power rating (3.0 W vs. 0.5 W). While not pin-compatible, the 1PMT5941C/TR7 offers drop-in functional replacement in new designs where board space and thermal headroom are constrained. Layout redesign is required due to different footprint and cathode-terminal orientation.
1PMT5941C/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):
- 47 V
- Tolerance:
- ±2%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 67 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 35.8 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
1PMT5941C/TR7 FAQ
1.How can I place an order for 1PMT5941C/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5941C/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 1PMT5941C/TR7 reliable?
The price and inventory of 1PMT5941C/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5941C/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5941C/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5941C/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5941C/TR7?
1PMT5941C/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5941C/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 1PMT5941C/TR7?
For technical support, including 1PMT5941C/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5941C/TR7 requirements.
6.How does Aetrix verify that 1PMT5941C/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5941C/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 1PMT5941C/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5941C/TR7?
All 1PMT5941C/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5941C/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 1PMT5941C/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5941C/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5941C/TR7 Tags
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MM5Z5V1ST1G
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