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Microchip Technology 1PMT5948BE3/TR13
- Part No.:
- 1PMT5948BE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5948BE3/TR13.pdf
- Description:
- DIODE ZENER 91V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,407
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Product details
Overview
1PMT5948BE3/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 1PMT5948BE3/TR13 datasheet, 1PMT5948BE3/TR13 pinout, 1PMT5948BE3/TR13 application, or 1PMT5948BE3/TR13 equivalent, key selection criteria include its 91 V nominal Zener voltage, 3.0 W thermal capability with metallic-tab heat sinking, DO-216 mechanical outline, and ESD rating >16 kV HBM - all critical for ruggedized power management designs.
Technical Context
This Zener diode operates in reverse breakdown mode to regulate or clamp voltage with tight voltage stability under varying load conditions. Its Powermite® package integrates a full metallic bottom and locking tab that directly conducts heat from the junction to PCB copper, enabling 3.0 W dissipation without external heatsinking.
The device exhibits low knee impedance (0.25 Ω) and controlled knee current (4.1 mA), supporting stable regulation even at low bias currents. Reverse leakage remains ≤3000 µA up to 69.2 V, ensuring minimal standby power loss in always-on circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 91 V ±5% at IZT = 4.1 mA - defines clamping threshold for overvoltage protection circuits |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables high-energy transient suppression without derating in compact layouts |
| Dynamic Impedance (ZZT) | 200 Ω at 4.1 mA - determines voltage deviation under load current changes |
| Reverse Leakage (IR) | ≤3000 µA at VR = 69.2 V - ensures low quiescent current in standby power monitoring |
| Thermal Resistance | 30°C/W junction-to-TAB1 - allows direct thermal path to PCB ground plane for passive cooling |
| ESD Rating | >16 kV per HBM - protects against handling-induced electrostatic discharge during assembly |
| Knee Current (IZK) | 4.1 mA - minimum current needed to achieve stable Zener conduction |
Pinout & Package
Package: Powermite® (DO-216), 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 thermal pad for rated 3.0 W operation |
| Lead 2 | Anode | Standard anode terminal; mounted opposite TAB 1 on DO-216 outline |
Key Features
| Feature | Design Value |
|---|---|
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term reliability in high-humidity environments |
| Integral heat-sink locking tab | Provides mechanical anchoring and direct thermal conduction path from junction to PCB, enabling 3.0 W operation in 3.0 mm × 2.5 mm footprint |
| ESD robustness | >16 kV HBM rating reduces risk of field failure due to static discharge in automated handling and end-use |
| Low knee impedance | 0.25 Ω at IZK = 4.1 mA supports stable regulation down to light-load conditions typical in sensor biasing |
Applications
| Industrial Power Supply Clamp | Automotive ECUs |
|---|---|
Use Scenario: Clamping transient spikes on 24 V DC bus lines in programmable logic controllers and motor drives. IC Role / Device Role / Timing Role: Zener diode acting as shunt overvoltage protector downstream of DC/DC converters. Use Value: 91 V breakdown voltage provides 3× margin above nominal 24 V rail, while 3.0 W rating absorbs repetitive 100 ns–1 µs transients without degradation. | Use Scenario: Voltage reference for analog sensor signal conditioning in engine control units exposed to under-hood temperature extremes. IC Role / Device Role / Timing Role: Precision Zener reference source for ADC biasing and regulator feedback networks. Use Value: ±5% tolerance and 30°C/W thermal resistance ensure stable 91 V reference across –40°C to +125°C ambient, minimizing sensor offset drift. |
| Telecom Line Card Protection | Renewable Energy Inverters |
Use Scenario: Secondary overvoltage clamp on PoE-powered line cards subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response shunt protector parallel to primary TVS devices. Use Value: 200 Ω dynamic impedance and >16 kV HBM rating complement upstream TVS diodes by handling slower, higher-energy surges without thermal runaway. | Use Scenario: DC-link voltage stabilization in solar microinverters operating at elevated ambient temperatures. IC Role / Device Role / Timing Role: Zener-based voltage monitor for DC bus undervoltage/overvoltage fault detection. Use Value: Stable 91 V regulation at TAB 1 = 60°C enables reliable fault triggering across wide temperature range, with no active components required. |
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 (not Zener); 91 V standoff, 1500 W peak pulse power, unidirectional | Designed for transient suppression only; lacks stable DC regulation capability | Select when surge energy exceeds 3.0 W continuous but DC regulation is not required |
| 1N5375B | Through-hole 91 V Zener; 5 W rating; DO-201AD package; 55°C/W thermal resistance | Requires larger PCB area and external heatsinking for equivalent power handling | Select when legacy through-hole assembly or higher continuous power is needed, accepting larger footprint |
Compared with SMCJ91A and 1N5375B, the 1PMT5948BE3/TR13 uniquely combines surface-mount compatibility, 3.0 W continuous dissipation in a 3.0 mm × 2.5 mm footprint, and true Zener regulation - making it optimal for space-constrained, thermally demanding DC voltage reference and clamp applications where both precision and ruggedness are required.
Availability
1PMT5948BE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive electronic control units, telecom line card protection, and renewable energy inverters requiring stable component supply and consistent Zener performance across temperature and life cycle.
Supply support for 1PMT5948BE3/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 company specializing in high-reliability analog, mixed-signal, and RF solutions for aerospace, defense, industrial, and communications markets.
The Powermite® Zener diode family, including the 1PMT5948BE3/TR13, was engineered for high-power-density voltage regulation and transient clamping in surface-mount power systems where thermal performance and assembly reliability are critical.
FAQ
What is the Zener voltage tolerance of the 1PMT5948BE3/TR13?
The 1PMT5948BE3/TR13 has a standard Zener voltage tolerance of ±5% at 91 V nominal, measured at 4.1 mA test current and TAB 1 temperature of 30°C. Tighter tolerances (±2%, ±1%) are available with suffixes C and D respectively, but the E3/TR13 variant specifies ±5%. This tolerance directly impacts accuracy in voltage reference and overvoltage protection circuits.
How is thermal management handled in the 1PMT5948BE3/TR13 package?
The 1PMT5948BE3/TR13 uses the Powermite® package with a full metallic bottom and integral locking tab (TAB 1) that serves as both cathode and primary thermal interface. Its 30°C/W junction-to-TAB1 thermal resistance requires direct soldering of TAB 1 to a copper thermal pad on the PCB to achieve the rated 3.0 W power dissipation at TAB 1 = 60°C.
What does the "E3/TR13" suffix indicate for the 1PMT5948BE3/TR13?
The "E3" denotes tape-and-reel packaging compliant with EIA-481 standards, and "TR13" specifies a 13-inch reel containing 12,000 units. This packaging format ensures compatibility with high-speed automated pick-and-place equipment and supports volume manufacturing without manual handling.
Can the 1PMT5948BE3/TR13 be used as a replacement for through-hole Zeners like the 1N5375B?
The 1PMT5948BE3/TR13 is not a drop-in replacement for the 1N5375B due to different packages (DO-216 vs. DO-201AD), thermal paths, and mounting methods. While both are 91 V Zeners, the 1PMT5948BE3/TR13 delivers 3.0 W in a surface-mount footprint with lower thermal resistance (30°C/W vs. 55°C/W), requiring PCB layout adaptation for optimal thermal performance.
What is the maximum reverse leakage current specified for the 1PMT5948BE3/TR13?
The 1PMT5948BE3/TR13 has a maximum reverse leakage current of 3000 µA at a reverse voltage of 69.2 V, measured at TL = 30°C. This parameter is critical for low-power standby circuits, as excessive leakage can increase quiescent current and reduce battery life in always-on applications.
1PMT5948BE3/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:
- ±5%
- 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
1PMT5948BE3/TR13 FAQ
1.How can I place an order for 1PMT5948BE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5948BE3/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 1PMT5948BE3/TR13 reliable?
The price and inventory of 1PMT5948BE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5948BE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5948BE3/TR13?
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4.How is shipping managed for 1PMT5948BE3/TR13?
1PMT5948BE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5948BE3/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 1PMT5948BE3/TR13?
For technical support, including 1PMT5948BE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5948BE3/TR13 requirements.
6.How does Aetrix verify that 1PMT5948BE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5948BE3/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 1PMT5948BE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5948BE3/TR13?
All 1PMT5948BE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5948BE3/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 1PMT5948BE3/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5948BE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5948BE3/TR13 Tags
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