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Microchip Technology 1PMT5948A/TR13
- Part No.:
- 1PMT5948A/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5948A/TR13.pdf
- Description:
- DIODE ZENER 91V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,787
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Product details
Overview
1PMT5948A/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 3000 µA max reverse leakage at 69.2 V. It serves as a precision voltage reference or overvoltage clamp in DC power rails of industrial control modules.
For engineers reviewing the 1PMT5948A/TR13 datasheet, 1PMT5948A/TR13 pinout, 1PMT5948A/TR13 application, or 1PMT5948A/TR13 equivalent, key selection criteria include zener voltage accuracy, 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 to maintain stable voltage regulation across varying load currents. Its Powermite® package integrates a full metallic bottom and locking tab that functions as both mechanical anchor and thermal path to PCB copper, enabling efficient heat transfer from junction to TAB 1.
The device exhibits tight voltage tolerance (±5%), low reverse leakage (≤3000 µA at VR = 69.2 V), and controlled dynamic impedance (200 Ω at IZT = 4.1 mA), making it suitable for applications requiring predictable clamping behavior under transient conditions without external heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 91 V ±5% - precise clamping threshold at 4.1 mA, verified at TC = 30°C |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - defines maximum continuous DC power handling with defined thermal boundary |
| Dynamic Impedance (ZZT) | 200 Ω at IZT = 4.1 mA - indicates small-signal AC resistance near operating point |
| Reverse Leakage (IR) | ≤3000 µA at VR = 69.2 V - ensures minimal standby current in high-impedance bias networks |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - quantifies thermal path efficiency from die to mounting pad |
| 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 |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral locking tab; cathode designated by TAB 1; weight ≈ 0.016 g; DO-216 outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary thermal and electrical connection point; must be soldered to copper pour for thermal management and circuit return |
| Lead 2 | Anode | Standard anode terminal; electrically isolated from TAB 1; connects to positive rail or signal source in clamp configuration |
Key Features
| Feature | Design Value |
|---|---|
| Integral heat sink locking tab | Provides mechanical retention during reflow and enhances thermal conduction from junction to PCB copper |
| Full metallic bottom | Eliminates solder flux entrapment risk, improving long-term solder joint reliability and process yield |
| EIA-481 tape-and-reel packaging | Enables direct use with high-speed pick-and-place equipment; 13-inch reel holds 12,000 units |
| Low reverse leakage at rated VR | Ensures minimal parasitic current draw in battery-backed or low-power monitoring circuits |
| Stable zener voltage over temperature | Junction-to-storage range of –55°C to +150°C supports operation in harsh industrial environments |
Applications
| Industrial Power Supply Clamp | Automotive ECUs |
|---|---|
Use Scenario: Clamping transient spikes on 24 V DC bus lines in programmable logic controllers. IC Role / Device Role / Timing Role: Voltage reference and overvoltage protection element placed across input rail and ground. Use Value: Limits voltage excursions to ≤91 V with 3.0 W surge capability, preventing damage to downstream regulators and microcontrollers. | Use Scenario: Protecting CAN transceiver supply pins against load-dump events in engine control units. IC Role / Device Role / Timing Role: Standby shunt regulator providing fail-safe voltage limiting during 12 V system surges. Use Value: Withstands >16 kV ESD and maintains regulation at 4.1 mA test current, ensuring immunity to ISO 7637-2 pulse 5a/b. |
| Test Equipment Reference | Renewable Energy Inverters |
Use Scenario: Providing stable 91 V reference for analog front-end calibration in portable multimeters. IC Role / Device Role / Timing Role: Precision voltage reference source in feedback divider networks. Use Value: ±5% tolerance and 200 Ω dynamic impedance enable repeatable measurement accuracy across temperature and aging. | Use Scenario: Overvoltage protection for DC-link capacitors in solar microinverters. IC Role / Device Role / Timing Role: Passive crowbar element activated during grid fault conditions. Use Value: 30°C/W thermal resistance allows direct mounting to heatsink-equipped PCBs, sustaining 3.0 W dissipation without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5948A | Same 91 V nominal voltage and ±5% tolerance, but in DO-41 through-hole package; no metallic bottom or locking tab; thermal resistance ~65°C/W | Requires manual or wave soldering; unsuitable for high-density SMT layouts or automated insertion | Select when board-level thermal constraints allow larger footprint and legacy assembly processes apply |
| BZX84-C91 | 91 V ±5%, SOT-23 package; 300 mW power rating; 250 Ω dynamic impedance; 100 µA IR at 73.7 V | Limited to low-power signal-level clamping; cannot sustain 3.0 W surges or industrial ambient temperatures | Choose only for space-constrained, low-energy circuits where 3 W capability is unnecessary |
Compared with 1N5948A and BZX84-C91, the 1PMT5948A/TR13 delivers superior thermal performance (30°C/W vs. 65°C/W or unlisted), higher surge power handling (3.0 W vs. 0.3 W), and SMT-ready mechanical design-making it the only option qualified for ruggedized industrial power rail protection.
Availability
1PMT5948A/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive electronic control units, test equipment references, and renewable energy inverters requiring stable component supply and long-lifecycle support.
Supply support for 1PMT5948A/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 semiconductor manufacturer specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The Powermite® Zener diode product line was designed to deliver high-power surface-mount voltage regulation in compact, thermally optimized packages for mission-critical power conditioning and protection circuits.
FAQ
What is the zener voltage tolerance for 1PMT5948A/TR13?
The 1PMT5948A/TR13 has a standard zener voltage tolerance of ±5% at 91 V, measured at 4.1 mA test current with TAB 1 held at 30°C. Tighter tolerances (±2% and ±1%) are available with suffixes C and D, respectively, but the base part number 1PMT5948A/TR13 specifies ±5%.
How is thermal management handled in the 1PMT5948A/TR13 package?
The 1PMT5948A/TR13 uses a Powermite® package with a full metallic bottom and integral locking tab that serves as the primary thermal path. Its specified junction-to-TAB 1 thermal resistance is 30°C/W, meaning effective heat transfer requires direct soldering of TAB 1 to a sufficient copper area on the PCB.
Is the 1PMT5948A/TR13 compatible with automated SMT assembly?
Yes, the 1PMT5948A/TR13 is supplied in EIA-481 compliant tape-and-reel format (13-inch reel, 12,000 units), and its Powermite® package geometry and locking tab are explicitly designed for compatibility with high-speed automatic insertion and reflow soldering equipment.
What is the maximum reverse leakage current for 1PMT5948A/TR13?
The 1PMT5948A/TR13 has a maximum reverse leakage current of 3000 µA at a reverse voltage of 69.2 V, as specified in the Electrical Characteristics table. This value is measured at TL = 30°C and reflects worst-case leakage under defined test conditions.
Does the 1PMT5948A/TR13 have ESD protection built-in?
Yes, the 1PMT5948A/TR13 is rated for >16 kV per the Human Body Model (HBM), as stated in the FEATURES section of the MSC0995 datasheet. This ESD rating applies to the packaged device and supports robust handling during automated manufacturing and board assembly.
1PMT5948A/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
1PMT5948A/TR13 FAQ
1.How can I place an order for 1PMT5948A/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5948A/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 1PMT5948A/TR13 reliable?
The price and inventory of 1PMT5948A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5948A/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5948A/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5948A/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5948A/TR13?
1PMT5948A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5948A/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 1PMT5948A/TR13?
For technical support, including 1PMT5948A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5948A/TR13 requirements.
6.How does Aetrix verify that 1PMT5948A/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5948A/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 1PMT5948A/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5948A/TR13?
All 1PMT5948A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5948A/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 1PMT5948A/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5948A/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5948A/TR13 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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Diodes Incorporated
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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