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Microchip Technology 1PMT5948C/TR13
- Part No.:
- 1PMT5948C/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5948C/TR13.pdf
- Description:
- DIODE ZENER 91V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,376
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Product details
Overview
1PMT5948C/TR13 from Microsemi is a 91 V, ±1% tolerance Zener diode in the Powermite® surface-mount 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 in industrial power supplies and overvoltage protection circuits.
For engineers reviewing the 1PMT5948C/TR13 datasheet, 1PMT5948C/TR13 pinout, 1PMT5948C/TR13 application, or 1PMT5948C/TR13 equivalent, key selection considerations include its tight 1% voltage tolerance, ESD rating >16 kV (HBM), full metallic bottom eliminating flux entrapment, and compatibility with automated insertion equipment.
Technical Context
This Zener diode operates as a two-terminal voltage reference device with cathode designated by TAB 1. Its Powermite® package integrates a locking tab acting as an integral heat sink and features a full metallic bottom for improved thermal conduction and solder reliability.
Electrical behavior is defined at TL = 30°C with VZ measured 20 seconds after applying DC current; dynamic impedance (ZZT) is derived using 60 Hz RMS AC current equal to 10% of IZT, and knee impedance (ZZK) is specified at 0.25 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 91 V ±1% - enables precise clamping or reference in high-voltage regulation stages |
| Test Current (IZT) | 4.1 mA - defines operating point where VZ and ZZT are guaranteed |
| Dynamic Impedance (ZZT) | 200 Ω - limits voltage variation under small-signal AC load changes |
| Max Power Dissipation | 3.0 W at TAB 1 = 60°C - supports robust thermal management in compact SMT layouts |
| Thermal Resistance | 30°C/W (junction to TAB 1) - allows accurate junction temperature estimation during design |
| ESD Rating | >16 kV HBM - ensures handling robustness in automated assembly and field operation |
| Knee Current (IZK) | 0.25 mA - specifies minimum current for stable Zener conduction onset |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral heat sink locking tab; cathode designated by TAB 1; mounting position unrestricted; weight ≈ 0.016 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat-sinking terminal and voltage reference node; must be thermally anchored to PCB copper |
| Lead 2 | Anode | Current entry point during reverse-bias operation; electrically isolated from TAB 1 |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables high-density PCB layout while delivering 3.0 W power handling traditionally found in larger through-hole packages |
| Integral heat sink locking tab | Provides mechanical retention during reflow and enhances thermal transfer from junction to PCB without external heatsink |
| Full metallic bottom | Eliminates solder flux entrapment risk, improving long-term solder joint integrity and process yield |
| ESD rating >16 kV (HBM) | Reduces susceptibility to electrostatic damage during handling, board assembly, and end-use environments |
| ±1% Zener voltage tolerance (suffix C) | Supports tighter regulation margins in feedback loops and reference circuits without post-calibration |
Applications
| Industrial Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated DC-DC converters operating up to 100 V input. IC Role / Device Role / Timing Role: Precision voltage reference and error amplifier biasing element. Use Value: ±1% VZ tolerance ensures output regulation within ±0.5% across line/load variations. | Use Scenario: Clamping transient surges on 48 V telecom distribution rails. IC Role / Device Role / Timing Role: Primary shunt overvoltage clamp protecting downstream DC-DC controllers. Use Value: 3.0 W power rating sustains 100 ms surge events without degradation. |
| Automated Test Equipment (ATE) Reference | Programmable Logic Controller (PLC) Input Protection |
Use Scenario: Providing stable 91 V reference for DAC calibration in high-accuracy data acquisition modules. IC Role / Device Role / Timing Role: Low-drift, low-noise Zener reference source. Use Value: 200 Ω dynamic impedance minimizes AC error contribution during fast settling measurements. | Use Scenario: Protecting 24 V digital input channels against accidental 90–100 V miswiring in factory automation panels. IC Role / Device Role / Timing Role: Fail-safe voltage clamp on field-side input circuitry. Use Value: >16 kV HBM rating prevents ESD-induced latch-up during maintenance or cable handling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMF91A (ON Semiconductor) | DO-219AD package, 3.0 W, 91 V ±5%, 250 Ω ZZT @ 5 mA | Larger thermal resistance (50°C/W), no integral heat sink tab | Acceptable where ±5% tolerance and lower ESD immunity (>8 kV HBM) are acceptable |
| BZX84-C91 (Diodes Inc.) | SOT-23 package, 300 mW, 91 V ±5%, 500 Ω ZZT @ 5 mA | Lower power rating and higher impedance limit use to signal-level clamping only | Only suitable for low-power logic interface protection, not power rail regulation |
Compared with SMF91A and BZX84-C91, the 1PMT5948C/TR13 delivers superior thermal performance (30°C/W), tighter 1% tolerance, and integrated heat sinking - making it uniquely suited for high-reliability, high-power industrial voltage reference and clamping roles where stability and surge endurance are critical.
Availability
1PMT5948C/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, telecom surge protection, and programmable logic controller (PLC) input conditioning requiring stable component supply, consistent parametric performance, and long-lifecycle availability.
Supply support for 1PMT5948C/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 product line was designed specifically for high-power, surface-mount voltage regulation and transient suppression in space-constrained, thermally demanding industrial and telecom infrastructure applications.
FAQ
What is the Zener voltage tolerance for 1PMT5948C/TR13?
The "C" suffix in 1PMT5948C/TR13 denotes ±1% Zener voltage tolerance at 4.1 mA test current and TAB 1 temperature of 30°C. This is tighter than the standard ±5% (B suffix) and supports precision regulation where minimal voltage drift is required. The 1PMT5948C/TR13 achieves this via laser-trimmed silicon and rigorous binning during final test.
How is thermal management handled in the 1PMT5948C/TR13 package?
The 1PMT5948C/TR13 uses the Powermite® package with TAB 1 as the cathode and primary thermal path, offering 30°C/W junction-to-TAB thermal resistance. Its integral locking tab acts as a built-in heat sink, and the full metallic bottom ensures efficient conduction into PCB copper. For reliable 3.0 W operation, TAB 1 must be connected to ≥1 cm² of 2-oz copper with thermal vias.
Is 1PMT5948C/TR13 compatible with lead-free reflow processes?
Yes, the 1PMT5948C/TR13 is qualified for standard lead-free reflow profiles per J-STD-020, with peak temperatures up to 260°C. Its molded Powermite® package and metallization system are fully compatible with SAC305 solder paste and typical 60–90 second time-above-liquidus cycles. No special prebake or moisture sensitivity handling is required (MSL 1).
What does the "TR13" suffix indicate in 1PMT5948C/TR13?
The "TR13" suffix indicates tape-and-reel packaging per EIA-481 standard on a 13-inch reel containing 12,000 units. This format supports high-speed pick-and-place assembly and is optimized for automated SMT lines. The reel meets industry-standard tension, pocket depth, and cover tape peel force specifications for reliable feeding.
Can 1PMT5948C/TR13 be used in place of older through-hole Zeners like 1N5375B?
Yes, the 1PMT5948C/TR13 provides equivalent 91 V Zener functionality with improved thermal performance (30°C/W vs. ~60°C/W for 1N5375B) and surface-mount compatibility. However, direct replacement requires PCB layout revision due to different footprint and thermal pad requirements - it is not a drop-in mechanical substitute but a functionally superior upgrade path for new designs.
1PMT5948C/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:
- ±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
1PMT5948C/TR13 FAQ
1.How can I place an order for 1PMT5948C/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5948C/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 1PMT5948C/TR13 reliable?
The price and inventory of 1PMT5948C/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5948C/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5948C/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5948C/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5948C/TR13?
1PMT5948C/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5948C/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 1PMT5948C/TR13?
For technical support, including 1PMT5948C/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5948C/TR13 requirements.
6.How does Aetrix verify that 1PMT5948C/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5948C/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 1PMT5948C/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5948C/TR13?
All 1PMT5948C/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5948C/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 1PMT5948C/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5948C/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5948C/TR13 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
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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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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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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