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Microchip Technology 1PMT5948E3/TR13
- Part No.:
- 1PMT5948E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5948E3/TR13.pdf
- Description:
- DIODE ZENER 91V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,058
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Product details
Overview
1PMT5948E3/TR13 from Microsemi is a 3.0 W surface-mount Zener diode in Powermite® package with nominal zener voltage 91 V (±5%), dynamic impedance 200 Ω at 4.1 mA test current, and thermal resistance 30°C/W junction-to-tab. It serves as precision voltage reference or overvoltage clamp in power supply regulation and transient protection circuits.
For engineers reviewing the 1PMT5948E3/TR13 datasheet, 1PMT5948E3/TR13 pinout, 1PMT5948E3/TR13 application, or 1PMT5948E3/TR13 equivalent, key selection criteria include its 91 V zener voltage, 3.0 W power rating at tab temperature ≤60°C, DO-216 mechanical outline, and ESD rating >16 kV HBM - all critical for high-reliability industrial and automotive power rail stabilization.
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 mechanical stability during reflow soldering.
The device exhibits low reverse leakage (≤3000 µA at 1 V), knee current of 0.25 mA, and knee impedance of 3000 Ω - enabling stable regulation even at low bias currents. Voltage tolerance is ±5% standard, with optional ±2% (suffix C) and ±1% (suffix D) versions available.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 91 V ±5% at IZT = 4.1 mA - defines regulated output voltage under nominal bias |
| Power Dissipation | 3.0 W at TAB1 temperature ≤60°C - sets maximum continuous power handling with heatsinking |
| Dynamic Impedance ZZT | 200 Ω at 4.1 mA - determines voltage regulation sensitivity to current variation |
| Thermal Resistance | 30°C/W junction-to-TAB1 - quantifies thermal path efficiency for PCB copper pad cooling |
| ESD Rating | >16 kV per Human Body Model - ensures robustness against handling and assembly electrostatic discharge |
| Reverse Leakage IR | ≤3000 µA at VR = 1 V - confirms low standby power loss in clamping applications |
| Knee Current IZK | 0.25 mA - minimum current needed to enter stable breakdown region |
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-sink interface and electrical cathode connection; must be soldered to copper pour for thermal performance |
| Lead 2 | Anode | Standard anode terminal; mounted opposite TAB 1 on DO-216 outline |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables automated placement and reflow while delivering 3.0 W power handling in footprint smaller than DO-41 |
| Full metallic bottom | Eliminates solder flux entrapment during assembly, improving long-term reliability and void-free solder joints |
| Integral heat-sink locking tab | Provides mechanical anchoring and direct thermal path from junction to PCB copper, reducing θJC to 30°C/W |
| ESD robustness | >16 kV HBM rating allows safe handling without special ESD controls in standard production environments |
Applications
| Industrial Power Supply Regulation | Automotive Load Dump Protection |
|---|---|
Use Scenario: Stabilizing feedback reference in isolated DC-DC converters operating up to 100 V input. IC Role / Device Role / Timing Role: Zener diode providing precise 91 V reference for TL431-based error amplifiers or discrete op-amp feedback networks. Use Value: Maintains ±5% output voltage accuracy across temperature (-55°C to +150°C) and load transients due to low dynamic impedance and tight VZ tolerance. | Use Scenario: Clamping induced transients during alternator load dump events in 24 V vehicle systems. IC Role / Device Role / Timing Role: Transient voltage suppressor placed across main power rail to limit peak voltage to 91 V. Use Value: Absorbs 3.0 W continuously and handles short-duration surges without degradation, validated by 0.25 mA knee current ensuring turn-on predictability. |
| Telecom Line Card Protection | Test Equipment Reference Source |
Use Scenario: Overvoltage protection on -48 V DC distribution lines subject to lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional clamping element (used with series resistor) limiting line voltage excursions above 91 V. Use Value: Low reverse leakage (≤3000 µA at 1 V) minimizes standby power draw; DO-216 package enables dense layout on line card edge connectors. | Use Scenario: Stable voltage reference in portable calibrator modules requiring traceable 91 V output. IC Role / Device Role / Timing Role: Precision Zener reference source for DAC/ADC calibration circuitry. Use Value: ±5% initial tolerance and 30°C/W thermal resistance enable <100 ppm/°C drift when mounted on thermally stabilized copper pads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5375B | Same 91 V nominal VZ, but DO-41 through-hole package; 5 W rating; higher thermal resistance (~50°C/W) | Requires manual or wave soldering; unsuitable for high-density SMT layouts | Select 1N5375B only if board-level repair or legacy through-hole compatibility is required |
| BZX84-C91 | 91 V ±5%, SOT-23 package; 300 mW power rating; 600 Ω ZZT; no metallic heat-sink tab | Limited to low-power signal-level clamping; cannot sustain 3.0 W continuous dissipation | Choose BZX84-C91 only for space-constrained logic-level protection where power stress is negligible |
Compared with 1N5375B and BZX84-C91, the 1PMT5948E3/TR13 uniquely delivers 3.0 W SMT power handling with integrated thermal management - making it the only viable option for high-reliability, high-power Zener regulation in modern industrial PCBs.
Availability
1PMT5948E3/TR13 is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive load dump protection, telecom line card protection, and test equipment reference source applications requiring stable component supply and long-lifecycle support.
Supply support for 1PMT5948E3/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 and mixed-signal components for aerospace, defense, and industrial markets.
The Powermite® Zener diode product line was engineered for high-power surface-mount voltage regulation and transient suppression in harsh-environment applications where thermal performance and assembly reliability are critical.
FAQ
What is the zener voltage tolerance for 1PMT5948E3/TR13?
The 1PMT5948E3/TR13 has a standard zener voltage tolerance of ±5% at 91 V nominal, measured at 4.1 mA test current and tab temperature of 30°C. Tighter tolerances of ±2% (suffix C) and ±1% (suffix D) are available upon request, but the base part number 1PMT5948E3/TR13 reflects the ±5% grade.
Can 1PMT5948E3/TR13 be used in place of through-hole Zeners like 1N5375B?
No - while both devices share a 91 V nominal zener voltage, the 1PMT5948E3/TR13 is a surface-mount Powermite® device with DO-216 outline and integral heat-sink tab, whereas 1N5375B uses DO-41 through-hole packaging. Direct substitution requires PCB redesign; thermal and mounting constraints differ significantly between the two packages.
What is the maximum continuous power dissipation for 1PMT5948E3/TR13?
The 1PMT5948E3/TR13 is rated for 3.0 W DC power dissipation when the tab (TAB 1) temperature is maintained at or below 60°C. This rating assumes adequate PCB copper area for heat spreading; exceeding 60°C tab temperature reduces allowable power linearly per the device's thermal resistance of 30°C/W.
How is cathode identification implemented on 1PMT5948E3/TR13?
The cathode of the 1PMT5948E3/TR13 is designated by TAB 1 - the larger metallic surface on the package bottom. This tab serves as both the cathode electrical connection and primary thermal interface. The anode is the smaller lead opposite TAB 1, consistent with DO-216AA mechanical specifications.
Does 1PMT5948E3/TR13 meet automotive AEC-Q200 requirements?
The 1PMT5948E3/TR13 is not AEC-Q200 qualified. It is rated for operation from -55°C to +150°C junction temperature and features >16 kV HBM ESD robustness, but formal qualification testing per AEC-Q200 stress profiles (including temperature cycling, humidity bias, and vibration) has not been performed or documented for this part number.
1PMT5948E3/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:
- ±20%
- 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
1PMT5948E3/TR13 FAQ
1.How can I place an order for 1PMT5948E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5948E3/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 1PMT5948E3/TR13 reliable?
The price and inventory of 1PMT5948E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5948E3/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5948E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5948E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5948E3/TR13?
1PMT5948E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5948E3/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 1PMT5948E3/TR13?
For technical support, including 1PMT5948E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5948E3/TR13 requirements.
6.How does Aetrix verify that 1PMT5948E3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5948E3/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 1PMT5948E3/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5948E3/TR13?
All 1PMT5948E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5948E3/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 1PMT5948E3/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5948E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5948E3/TR13 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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