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Microchip Technology 1PMT5948AE3/TR13
- Part No.:
- 1PMT5948AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5948AE3/TR13.pdf
- Description:
- DIODE ZENER 91V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,060
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Product details
Overview
1PMT5948AE3/TR13 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 30°C/W thermal resistance from junction to TAB 1 - used for precision voltage regulation and overvoltage protection in compact DC power rails.
For engineers reviewing the 1PMT5948AE3/TR13 datasheet, 1PMT5948AE3/TR13 pinout, 1PMT5948AE3/TR13 application, or 1PMT5948AE3/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance to tab, reverse leakage at VR = 69.2 V, knee current (IZK = 0.25 mA), and compatibility with EIA-481 tape-and-reel automated assembly.
Technical Context
This Zener diode operates as a two-terminal voltage reference device, leveraging silicon PN-junction avalanche breakdown at 91 V nominal. Its Powermite® package integrates a full metallic bottom and locking tab to enhance thermal conduction and mechanical stability during reflow or wave soldering.
Electrical behavior is defined at TL = 30°C with IZT = 4.1 mA; Zener voltage shifts with temperature per Micro Note 202, and dynamic impedance (ZZT = 200 Ω) reflects AC small-signal response under 10% IZT ripple. Reverse leakage remains ≤3000 µA at VR = 69.2 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 91 V ±5% at IZT = 4.1 mA, TL = 30°C - sets regulated output level in shunt regulator circuits |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - defines maximum continuous DC power handling with tab heatsinking |
| Dynamic Impedance | 200 Ω at IZT = 4.1 mA - determines output voltage variation under load current transients |
| Knee Current (IZK) | 0.25 mA - minimum current to achieve stable Zener conduction; critical for low-power biasing |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - quantifies temperature rise per watt; enables thermal design with PCB copper area |
| Reverse Leakage | ≤3000 µA at VR = 69.2 V - limits standby power loss in high-impedance sensing or protection paths |
| ESD Rating | >16 kV HBM - ensures robustness against handling-induced electrostatic discharge |
Pinout & Package
The 1PMT5948AE3/TR13 uses a DO-216–compatible Powermite® surface-mount package with molded body and full metallic bottom. Cathode is designated by TAB 1; mounting orientation is unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat path and electrical cathode connection; must be soldered to thermal pad for rated 3.0 W operation |
| Lead 2 | Anode | Standard anode terminal; connects to lower-potential node in shunt regulation or clamping configuration |
Key Features
| Feature | Design Value |
|---|---|
| Integral heat sink locking tab | Provides mechanical anchoring and direct thermal conduction path from junction to PCB via TAB 1 |
| Full metallic bottom | Eliminates solder flux entrapment risk during reflow, improving long-term reliability and void-free solder joints |
| Automated insertion compatibility | Designed for pick-and-place and wave soldering per EIA-481 tape-and-reel (7″/13″ reels) |
| Low reverse leakage | ≤3000 µA at 69.2 V enables use in high-impedance voltage monitoring and battery-backed circuits |
Applications
| Industrial Power Supply Regulation | Automotive Body Control Module Protection |
|---|---|
Use Scenario: Stabilizing reference voltage for feedback loop in isolated 24 V DC-DC converter. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 91 V clamp point for optocoupler-driven error amplifier. Use Value: Maintains ±5% regulation accuracy across -40°C to +125°C ambient with 30°C/W thermal path to chassis ground. | Use Scenario: Overvoltage clamping on LIN bus transceiver supply rail during load dump events. IC Role / Device Role / Timing Role: Transient voltage suppressor protecting 12 V rail from spikes up to 91 V. Use Value: Absorbs 3.0 W surge energy without degradation, enabled by metallic-tab thermal coupling to PCB ground plane. |
| Medical Instrumentation Reference | Telecom Line Card Biasing |
Use Scenario: Generating stable bias voltage for analog front-end amplifiers in portable ultrasound systems. IC Role / Device Role / Timing Role: Precision Zener reference establishing 91 V calibration point for ADC input scaling. Use Value: Delivers <100 ppm/°C drift performance when mounted on thermally stabilized copper pour, supported by tight 5% VZ tolerance. | Use Scenario: Providing bias voltage for RF power amplifier stages in base station line cards. IC Role / Device Role / Timing Role: High-stability shunt regulator maintaining constant 91 V supply despite varying load currents. Use Value: 200 Ω dynamic impedance ensures <20 mV output variation under 100 mA step load, critical for PA linearity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5948BRLG | Same 91 V nominal, ±5%, but in DO-41 through-hole package; no metallic tab; 50°C/W θJA vs. 30°C/W junction-to-tab | Requires lead trimming and manual placement; unsuitable for high-density SMT layouts or high-power SMT thermal management | Select only if legacy through-hole assembly or board-level repair is required |
| BZX85C91-TR | 91 V ±5%, TO-220AC package; 1.3 W rating; higher thermal resistance (60°C/W junction-to-case); no ESD rating specified | Limited to lower-power applications; lacks >16 kV HBM rating and flux-trap-free bottom design | Choose only where cost is primary constraint and 3.0 W dissipation is not needed |
Compared with 1N5948BRLG and BZX85C91-TR, the 1PMT5948AE3/TR13 delivers superior thermal performance (30°C/W), automated assembly readiness, and certified ESD robustness - making it the preferred choice for space-constrained, high-reliability SMT power regulation.
Availability
1PMT5948AE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive control units, medical instrumentation, and telecom infrastructure requiring stable component supply and consistent Zener voltage performance.
Supply support for 1PMT5948AE3/TR13 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 the 1PMT5948AE3/TR13, was engineered for high-power density surface-mount voltage regulation where thermal management, automated assembly, and ruggedness are critical.
FAQ
What is the Zener voltage tolerance for 1PMT5948AE3/TR13?
The 1PMT5948AE3/TR13 has a standard Zener voltage tolerance of ±5% at 91 V nominal, measured at IZT = 4.1 mA and TAB temperature = 30°C. Tighter tolerances (±2%, ±1%) are available with suffixes C and D, but the E3/TR13 variant specifies ±5%. This tolerance directly impacts regulation accuracy in feedback networks and must be accounted for in worst-case circuit analysis.
How is thermal performance specified for 1PMT5948AE3/TR13?
The 1PMT5948AE3/TR13 has a junction-to-TAB 1 thermal resistance of 30°C/W, enabling 3.0 W DC power dissipation when TAB 1 is held at 60°C. This value assumes direct thermal conduction from the metallic bottom to a PCB copper pour. Unlike standard SMT diodes, the Powermite® package's integral heat sink tab makes this parameter measurable and design-critical for thermal layout.
Is 1PMT5948AE3/TR13 compatible with automated SMT assembly processes?
Yes, the 1PMT5948AE3/TR13 is fully compatible with automated insertion equipment and conforms to EIA-481 tape-and-reel standards (7″ reel: 3,000 pcs; 13″ reel: 12,000 pcs). Its Powermite® package features a unique locking tab and full metallic bottom that prevent flux entrapment and ensure reliable placement and solder joint integrity during reflow.
What is the maximum reverse leakage current for 1PMT5948AE3/TR13?
The maximum reverse leakage current for 1PMT5948AE3/TR13 is 3000 µA at VR = 69.2 V and TL = 30°C. This value is specified in the manufacturer's electrical characteristics table and reflects worst-case leakage under rated clamping conditions - important for low-power standby circuits where quiescent current must remain below microamp thresholds.
Does 1PMT5948AE3/TR13 have ESD protection, and what is its rating?
Yes, the 1PMT5948AE3/TR13 has an ESD rating exceeding 16 kV per the Human Body Model (HBM), as confirmed in the official Microsemi datasheet MSC0995. This high rating results from process-level design and packaging features, making the device suitable for handling in uncontrolled environments and integration into systems sensitive to electrostatic discharge damage.
1PMT5948AE3/TR13 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:
- ±10%
- 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
1PMT5948AE3/TR13 FAQ
1.How can I place an order for 1PMT5948AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5948AE3/TR13 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 1PMT5948AE3/TR13 reliable?
The price and inventory of 1PMT5948AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5948AE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5948AE3/TR13?
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4.How is shipping managed for 1PMT5948AE3/TR13?
1PMT5948AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5948AE3/TR13 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 1PMT5948AE3/TR13?
For technical support, including 1PMT5948AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5948AE3/TR13 requirements.
6.How does Aetrix verify that 1PMT5948AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5948AE3/TR13 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 1PMT5948AE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5948AE3/TR13?
All 1PMT5948AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5948AE3/TR13, 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 1PMT5948AE3/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5948AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5948AE3/TR13 Tags
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Diodes Incorporated
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