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Microchip Technology 1PMT5948CE3/TR7
- Part No.:
- 1PMT5948CE3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5948CE3/TR7.pdf
- Description:
- DIODE ZENER 91V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,935
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Product details
Overview
1PMT5948CE3/TR7 from Microsemi is a 91 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 200 Ω dynamic impedance at 4.1 mA test current and <3000 µA reverse leakage at 69.2 V. It serves as a precision voltage reference or overvoltage clamp in DC power rails and regulator feedback paths.
For engineers reviewing the 1PMT5948CE3/TR7 datasheet, 1PMT5948CE3/TR7 pinout, 1PMT5948CE3/TR7 application, or 1PMT5948CE3/TR7 equivalent, key selection criteria include zener voltage tolerance (±5%), thermal resistance (30°C/W junction-to-TAB), ESD rating (>16 kV HBM), low knee impedance, and compatibility with automated SMT assembly using EIA-481 tape-and-reel packaging.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled voltage regulation across its specified test current range. Its Powermite® package integrates a full metallic bottom and locking tab to enhance thermal conduction and eliminate solder flux entrapment during reflow.
The device exhibits low reverse leakage (<3000 µA at VR = 69.2 V) and stable dynamic impedance (200 Ω at IZT = 4.1 mA), enabling reliable clamping and reference performance in temperature-critical industrial and telecom power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 91 V ±5% at IZT = 4.1 mA - defines nominal regulation point under standard test conditions |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - maximum continuous DC power handling with defined thermal mounting condition |
| Dynamic Impedance (ZZT) | 200 Ω at IZT = 4.1 mA - indicates voltage stability against small-signal current variations |
| Reverse Leakage (IR) | <3000 µA at VR = 69.2 V - ensures minimal standby current in clamping applications |
| Thermal Resistance | 30°C/W junction-to-TAB - quantifies thermal path efficiency to PCB copper pad or heatsink |
| ESD Rating | >16 kV per Human Body Model - supports robust handling in automated manufacturing environments |
| Knee Current (IZK) | 0.25 mA - minimum current required to enter usable regulation region near VZ |
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 heat-dissipating terminal; must be soldered to copper pour or thermal pad for rated 3.0 W operation |
| Lead 2 | Anode | Standard anode connection; electrically isolated from TAB 1; used for circuit return path |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables high-density PCB layout while delivering 3.0 W power handling comparable to larger through-hole Zeners |
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term reliability and solder joint integrity |
| Integral heat-sink locking tab | Provides mechanical anchoring and direct thermal conduction path from junction to PCB copper |
| EIA-481 tape-and-reel packaging | Supports seamless integration into automated pick-and-place systems (7″ reel: 3,000 pcs; 13″ reel: 12,000 pcs) |
Applications
| Industrial Power Supply Regulation | Telecom DC-DC Converter Feedback |
|---|---|
Use Scenario: Stabilizing output voltage in isolated flyback or forward converters operating from 48 V or -48 V telecom inputs. IC Role / Device Role / Timing Role: Zener reference in optocoupler feedback loop to maintain ±1% output regulation across line/load/temperature. Use Value: 91 V rating allows safe operation above typical 69.2 V clamp threshold while maintaining low ZZT for tight feedback control. | Use Scenario: Overvoltage protection on intermediate bus rails (e.g., 24 V, 36 V) feeding point-of-load regulators. IC Role / Device Role / Timing Role: Shunt clamp that activates at 91 V to divert excess current and protect downstream ICs during transient surges. Use Value: 3.0 W power rating and 30°C/W thermal resistance enable sustained clamping without thermal runaway under repeated 100 V transients. |
| Automotive Body Control Module (BCM) | Test & Measurement Equipment Reference |
Use Scenario: Voltage supervision of 12 V battery-fed microcontroller supply in harsh automotive environments (-40°C to +125°C). IC Role / Device Role / Timing Role: Precision Zener reference for ADC input scaling or reset threshold detection. Use Value: ±5% tolerance and >16 kV HBM ESD rating ensure stable operation despite load dump transients and handling stress. | Use Scenario: Stable voltage reference in portable multimeters and benchtop power supplies requiring low-drift calibration points. IC Role / Device Role / Timing Role: Primary reference element in voltage divider networks for analog front-end scaling. Use Value: Low knee impedance (0.25 mA IZK) and tight VZ tolerance support accurate low-current referencing without external biasing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMCJ91A | TVS diode (unidirectional), 91 V standoff, 1500 W peak pulse power, higher capacitance | Designed for transient suppression, not precision DC regulation | Select only for surge protection; not suitable as voltage reference due to wide clamping tolerance and no DC regulation spec |
| BZX84-C91 | SOT-23 package, 300 mW power rating, 91 V ±5%, 600 Ω ZZT at 5 mA | Limited thermal capacity; unsuitable for >300 mW continuous dissipation | Use where board space is critical and power <300 mW; requires derating above 25°C ambient |
Compared with SMCJ91A and BZX84-C91, the 1PMT5948CE3/TR7 uniquely delivers 3.0 W DC power handling in a surface-mount package with verified 200 Ω dynamic impedance and 30°C/W thermal resistance-enabling use as both precision reference and robust shunt clamp where sustained power dissipation and thermal management are essential.
Availability
1PMT5948CE3/TR7 is available at Aetrix Electronics and suitable for industrial power supply regulation, telecom DC-DC converter feedback, and automotive body control module (BCM) designs requiring stable component supply with full traceability and lifecycle support.
Supply support for 1PMT5948CE3/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 RF solutions for aerospace, defense, industrial, and communications markets.
The Powermite® Zener diode product line was engineered to deliver high-power surface-mount voltage regulation in compact form factors, targeting applications demanding robust thermal performance and automated assembly compatibility.
FAQ
What is the Zener voltage tolerance for 1PMT5948CE3/TR7?
The 1PMT5948CE3/TR7 has a nominal Zener voltage of 91 V with a standard tolerance of ±5%, as confirmed in the MSC0995.PDF datasheet. This tolerance applies at IZT = 4.1 mA and TAB temperature = 30°C. Tighter tolerances (±2% and ±1%) are available with suffixes C and D, but the CE3 variant specifies ±5%.
How is thermal performance characterized for 1PMT5948CE3/TR7?
The 1PMT5948CE3/TR7 has a junction-to-TAB thermal resistance of 30°C/W, measured from the silicon die to TAB 1. This value assumes proper soldering of TAB 1 to a thermally adequate PCB copper area. At TAB = 60°C, the device sustains 3.0 W DC power dissipation-critical for designing reliable clamping circuits without thermal runaway.
Is 1PMT5948CE3/TR7 compatible with automated SMT assembly?
Yes, the 1PMT5948CE3/TR7 is supplied in EIA-481 standard tape-and-reel format (7″ reel: 3,000 pcs; 13″ reel: 12,000 pcs) and features a Powermite® package optimized for automatic insertion equipment. Its full metallic bottom and locking tab ensure stable placement and reliable reflow soldering without flux entrapment.
What is the maximum reverse leakage current for 1PMT5948CE3/TR7?
The maximum reverse leakage current for 1PMT5948CE3/TR7 is 3000 µA at VR = 69.2 V, as specified in the electrical characteristics table of MSC0995.PDF. This parameter is measured at TL = 30°C and defines the upper bound of off-state current in clamping or reference applications.
Does 1PMT5948CE3/TR7 have ESD protection built-in?
Yes, the 1PMT5948CE3/TR7 has an ESD rating exceeding 16 kV per the Human Body Model (HBM), as stated in the FEATURES section of MSC0995.PDF. This rating reflects inherent device robustness and supports handling in standard manufacturing environments without additional ESD safeguards.
1PMT5948CE3/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):
- 91 V
- Tolerance:
- ±2%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 69.2 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
1PMT5948CE3/TR7 FAQ
1.How can I place an order for 1PMT5948CE3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5948CE3/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 1PMT5948CE3/TR7 reliable?
The price and inventory of 1PMT5948CE3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5948CE3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5948CE3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5948CE3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5948CE3/TR7?
1PMT5948CE3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5948CE3/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 1PMT5948CE3/TR7?
For technical support, including 1PMT5948CE3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5948CE3/TR7 requirements.
6.How does Aetrix verify that 1PMT5948CE3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5948CE3/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 1PMT5948CE3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5948CE3/TR7?
All 1PMT5948CE3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5948CE3/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 1PMT5948CE3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5948CE3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5948CE3/TR7 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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