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Microchip Technology 1PMT5941CE3/TR7
- Part No.:
- 1PMT5941CE3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5941CE3/TR7.pdf
- Description:
- DIODE ZENER 47V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,573
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Product details
Overview
1PMT5941CE3/TR7 from Microsemi is a 47 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 67 Ω dynamic impedance at 8.0 mA test current and <1 µA 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 1PMT5941CE3/TR7 datasheet, 1PMT5941CE3/TR7 pinout, 1PMT5941CE3/TR7 application, or 1PMT5941CE3/TR7 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (30°C/W junction-to-TAB), ESD rating (>16 kV HBM), low knee impedance, and compatibility with automated SMT assembly.
Technical Context
This device operates as a two-terminal voltage-regulating diode with sharp Zener breakdown at 47 V nominal, specified under controlled thermal conditions (TL = 30°C). Its Powermite® package integrates a full metallic bottom and locking tab to enhance thermal conduction and eliminate solder flux entrapment during reflow.
The 1PMT5941CE3/TR7 exhibits 67 Ω dynamic impedance at IZT = 8.0 mA and maintains ≤1 µA reverse leakage up to 35.8 V, enabling stable regulation in low-noise analog supply monitoring and transient suppression circuits where tight voltage reference stability is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 47 V ±5% - defines clamping threshold for overvoltage protection in 48 V DC systems |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - supports sustained regulation without external heatsink in compact layouts |
| Dynamic Impedance | 67 Ω at IZT = 8.0 mA - ensures minimal output voltage deviation under load current variation |
| Reverse Leakage | ≤1 µA at VR = 35.8 V - guarantees low standby power loss in always-on monitoring circuits |
| Thermal Resistance | 30°C/W junction-to-TAB - enables predictable thermal rise when mounted on copper pour or thermal pad |
| ESD Rating | >16 kV per HBM - provides robust handling margin during board assembly and field operation |
Pinout & Package
Package: Powermite® (DO-216AA), molded surface-mount package with full metallic bottom and integral heat-sink locking tab; cathode designated by TAB 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary thermal path and electrical connection point; must be soldered to PCB copper for thermal management |
| Lead 2 | Anode | Standard anode terminal; electrically isolated from TAB 1; used for series connection in voltage reference chains |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables high-density placement and compatibility with standard SMT pick-and-place equipment |
| Integral heat-sink locking tab | Reduces thermal resistance by direct metal-to-PCB conduction, improving power handling reliability |
| Full metallic bottom | Eliminates solder flux entrapment during reflow, increasing long-term solder joint integrity |
| ESD rating >16 kV HBM | Allows safe handling and integration into unshielded industrial environments without additional ESD protection |
Applications
| Industrial Power Supply Monitoring | Automotive Body Control Module (BCM) Clamping |
|---|---|
Use Scenario: Real-time detection of 48 V rail overvoltage in programmable logic controller (PLC) power stages. IC Role / Device Role / Timing Role: Zener clamping element referenced to ground, protecting downstream ADC inputs and supervisor ICs. Use Value: 47 V breakdown with ±5% tolerance ensures reliable trip point above nominal 48 V ±10% operating range while avoiding false triggering. | Use Scenario: Transient suppression on LIN bus power domain exposed to load-dump events. IC Role / Device Role / Timing Role: Standby overvoltage clamp placed between VBAT and local regulator input. Use Value: 3.0 W power rating and 30°C/W thermal resistance allow sustained clamping during 100 ms load-dump pulses without thermal runaway. |
| Medical Equipment Reference Stability | Telecom Remote Radio Unit (RRU) Biasing |
Use Scenario: Precision bias generation for op-amp feedback networks in portable ultrasound signal conditioning. IC Role / Device Role / Timing Role: Low-drift voltage reference source in dual-supply analog front-end circuitry. Use Value: 67 Ω dynamic impedance and ≤1 µA leakage ensure <0.5 mV output shift across 1–10 mA load variations, preserving gain accuracy. | Use Scenario: Stable bias voltage for GaN FET gate drivers in outdoor 5G RRU power amplifiers. IC Role / Device Role / Timing Role: Zener-derived reference for temperature-compensated current mirror biasing. Use Value: -55°C to +150°C operating range and >16 kV HBM rating support deployment in uncontrolled outdoor enclosures with wide 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) | Same 47 V ±5%, DO-219AB package, 1.0 W rating, 100 Ω ZZT, no metallic bottom | Limited to lower-power biasing due to 1.0 W dissipation; unsuitable for sustained 3 W clamping | Select 1PMT5941CE3/TR7 when thermal performance and power handling exceed 1.5 W requirements |
| BZX84-C47 (Diodes Inc.) | SOT-23 package, 47 V ±5%, 300 mW rating, 120 Ω ZZT, 100°C max TJ | Not rated for industrial temperature extremes; inadequate for >125°C ambient designs | Choose 1PMT5941CE3/TR7 for extended temperature operation (-55°C to +150°C) and higher reliability in harsh environments |
Compared with SMF47A and BZX84-C47, the 1PMT5941CE3/TR7 delivers 3× higher power capability, 30°C/W thermal resistance versus >100°C/W in SOT-23, and full metallic thermal interface-making it the only option qualified for continuous 3 W regulation in thermally constrained industrial PCBs.
Availability
1PMT5941CE3/TR7 is available at Aetrix Electronics and suitable for industrial power supply monitoring, automotive body control module clamping, and medical equipment reference stability requiring stable component supply across multi-year production cycles.
Supply support for 1PMT5941CE3/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 voltage regulation in space-constrained, thermally demanding applications-particularly where automated assembly, flux-free soldering, and extended temperature operation are mandatory.
FAQ
What is the Zener voltage tolerance for 1PMT5941CE3/TR7?
The 1PMT5941CE3/TR7 has a standard Zener voltage tolerance of ±5% at 47 V, measured at 8.0 mA test current with TAB 1 held at 30°C. Tighter tolerances (±2% and ±1%) are available with suffixes C and D, but the CE3/TR7 variant uses the standard ±5% grade. This tolerance ensures predictable clamping behavior in 48 V system protection circuits.
How is thermal management handled in the 1PMT5941CE3/TR7 package?
The 1PMT5941CE3/TR7 uses the Powermite® package with a full metallic bottom and integral locking tab that serves as the primary thermal path to the PCB. Its specified thermal resistance is 30°C/W junction-to-TAB, meaning effective cooling requires direct soldering of TAB 1 to a copper pour or thermal pad. No external heatsink is needed for 3.0 W operation at 60°C TAB temperature.
Is the 1PMT5941CE3/TR7 compatible with lead-free reflow processes?
Yes, the 1PMT5941CE3/TR7 is qualified for standard lead-free reflow profiles, including JEDEC J-STD-020-compliant peak temperatures up to 260°C. Its molded Powermite® package and metallic bottom are designed to withstand thermal cycling without delamination or solder joint failure, and the full metallic bottom prevents flux entrapment during reflow-critical for high-yield manufacturing.
What does the "TR7" suffix indicate in 1PMT5941CE3/TR7?
The "TR7" suffix denotes tape-and-reel packaging per EIA Standard 481, with 3,000 units per 7-inch reel. This format ensures compatibility with high-speed SMT pick-and-place equipment. The "CE3" portion indicates the ±5% Zener voltage tolerance and the Powermite® package variant; "E3" is Microsemi's internal package code for the DO-216AA outline with metallic tab.
Can the 1PMT5941CE3/TR7 be used in bidirectional transient suppression?
No, the 1PMT5941CE3/TR7 is a unidirectional Zener diode configured for cathode-to-anode breakdown only. It is not rated for reverse conduction or bidirectional TVS operation. For bidirectional transient suppression, a dedicated TVS diode such as SMAJ47A or equivalent would be required. The 1PMT5941CE3/TR7 functions strictly as a forward-biased anode / reverse-biased cathode voltage clamp.
1PMT5941CE3/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
1PMT5941CE3/TR7 FAQ
1.How can I place an order for 1PMT5941CE3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5941CE3/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 1PMT5941CE3/TR7 reliable?
The price and inventory of 1PMT5941CE3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5941CE3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5941CE3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5941CE3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5941CE3/TR7?
1PMT5941CE3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5941CE3/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 1PMT5941CE3/TR7?
For technical support, including 1PMT5941CE3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5941CE3/TR7 requirements.
6.How does Aetrix verify that 1PMT5941CE3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5941CE3/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 1PMT5941CE3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5941CE3/TR7?
All 1PMT5941CE3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5941CE3/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 1PMT5941CE3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5941CE3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5941CE3/TR7 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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