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Microchip Technology 1PMT5948CE3/TR13
- Part No.:
- 1PMT5948CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5948CE3/TR13.pdf
- Description:
- DIODE ZENER 91V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,856
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Product details
Overview
1PMT5948CE3/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. It serves as a precision voltage reference or overvoltage clamp in industrial power supplies and automotive control modules.
For engineers reviewing the 1PMT5948CE3/TR13 datasheet, 1PMT5948CE3/TR13 pinout, 1PMT5948CE3/TR13 application, or 1PMT5948CE3/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 ESD rating (>16 kV HBM).
Technical Context
This device operates as a silicon planar Zener diode with sharp breakdown characteristics, designed for stable voltage regulation under transient and steady-state conditions. Its DO-216 (Powermite®) package integrates a full metallic bottom and locking tab for mechanical retention and thermal conduction to PCB copper.
The 1PMT5948CE3/TR13 exhibits low reverse leakage (≤3000 µA at VR = 69.2 V), tight voltage tolerance (±5%), and specified dynamic impedance (200 Ω at IZT = 4.1 mA), enabling predictable clamping behavior in protection circuits and reference stability in feedback loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 91 V ±5% at IZT = 4.1 mA, TL = 30°C - defines nominal clamping/reference level |
| Max Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous thermal load on PCB copper area |
| Dynamic Impedance (ZZT) | 200 Ω at IZT = 4.1 mA - determines voltage deviation under load current changes |
| Knee Current (IZK) | 0.25 mA - minimum current needed to enter stable Zener region; critical for low-power biasing |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - quantifies temperature rise per watt dissipated into PCB pad |
| ESD Rating | >16 kV per Human Body Model - ensures robustness during handling and board assembly |
| Reverse Leakage (IR) | ≤3000 µA at VR = 69.2 V - limits standby current in high-impedance sensing or battery-backed circuits |
Pinout & Package
Package: DO-216 (Powermite®) surface-mount molded case with full metallic bottom and integral heat-sink locking tab. Cathode is designated by TAB 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat path and electrical cathode connection; must be soldered to copper pour for thermal management |
| Lead 2 | Anode | Standard anode terminal; mounted opposite TAB 1, electrically isolated from metal base |
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 risk and improves thermal coupling to PCB ground plane |
| Integral heat-sink locking tab | Provides mechanical anchoring during reflow and enhances thermal conduction from junction to PCB |
| ESD robustness | >16 kV HBM rating reduces need for external ESD protection in board-level designs |
Applications
| Industrial Power Supply Regulation | Automotive Engine Control Unit Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated flyback auxiliary supplies. IC Role / Device Role / Timing Role: Precision Zener reference for optocoupler biasing and error amplifier threshold setting. Use Value: 91 V ±5% tolerance and 200 Ω dynamic impedance ensure consistent regulation across line/load variations. | Use Scenario: Overvoltage protection on 12 V battery-supplied microcontroller I/O lines. IC Role / Device Role / Timing Role: Transient voltage clamp limiting input to safe levels during load dump events. Use Value: 3.0 W surge capability and >16 kV HBM rating withstand automotive ESD and ISO 7637-2 pulses. |
| Telecom Line Card Protection | Medical Diagnostic Equipment Reference |
Use Scenario: Secondary-side surge suppression on Ethernet PHY power rails. IC Role / Device Role / Timing Role: Fast-response shunt protector diverting induced transients away from sensitive analog front-ends. Use Value: Low knee current (0.25 mA) enables effective clamping even at low standby currents. | Use Scenario: Stable voltage reference for ADC biasing in portable ultrasound signal chains. IC Role / Device Role / Timing Role: Low-drift, low-noise Zener source for precision analog subsystems. Use Value: Tight 5% tolerance and 30°C/W thermal resistance minimize drift due to self-heating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5948BTR | Same 91 V Zener voltage but DO-41 through-hole package; no metallic bottom or locking tab; 50°C/W thermal resistance | Requires manual or wave soldering; unsuitable for high-density SMT layouts or thermally constrained boards | Select only if legacy through-hole assembly or lower-cost procurement outweighs thermal and automation benefits of 1PMT5948CE3/TR13 |
| SMBJ91A | TVS diode (not Zener); 91 V standoff, 100 W peak pulse power; higher leakage (5 µA typical at 73.7 V) | Designed for transient suppression, not precision regulation; lacks stable DC Zener characteristic | Use SMBJ91A only for surge-only protection; avoid where stable DC reference or low-IZK operation is required |
Compared with 1N5948BTR and SMBJ91A, the 1PMT5948CE3/TR13 uniquely combines SMT compatibility, 3.0 W DC power handling, 30°C/W thermal resistance, and sub-mA knee current-making it optimal for space-constrained, thermally demanding, precision-clamp applications.
Availability
1PMT5948CE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive control modules, telecom line cards, and medical diagnostic equipment requiring stable component supply and long-term manufacturability.
Supply support for 1PMT5948CE3/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 delivers high-power surface-mount voltage regulation in compact packages optimized for automated assembly and thermal performance in harsh-environment electronics.
FAQ
What is the Zener voltage tolerance for 1PMT5948CE3/TR13?
The 1PMT5948CE3/TR13 has a standard Zener voltage tolerance of ±5% at 91 V, measured at IZT = 4.1 mA and TAB temperature = 30°C. This tolerance is confirmed in the MSC0995.PDF datasheet revision F and applies to all units marked "C" suffix (e.g., 1PMT5948CE3/TR13). Tighter tolerances (±2%, ±1%) are available with suffixes D and E, respectively.
How is thermal management handled for 1PMT5948CE3/TR13?
The 1PMT5948CE3/TR13 relies on its metallic TAB 1 for primary heat dissipation, with a specified thermal resistance of 30°C/W junction-to-TAB. Effective thermal management requires soldering TAB 1 to a minimum 100 mm² copper pour on the PCB. The Powermite® package's full metallic bottom and locking tab enhance conduction, enabling 3.0 W continuous dissipation when TAB temperature is held at ≤60°C.
What does the "E3/TR13" suffix indicate in 1PMT5948CE3/TR13?
The "E3" denotes tape-and-reel packaging per EIA-481 standard with 13-inch reels (12,000 pieces per reel), and "TR13" confirms that configuration. The "C" in "CE3" specifies ±5% Zener voltage tolerance. This full suffix distinguishes the part from variants like 1PMT5948BE3 (±10%) or 1PMT5948DE3 (±2%), ensuring correct procurement for design requirements.
Can 1PMT5948CE3/TR13 replace through-hole Zeners like 1N5948B?
No direct replacement: 1PMT5948CE3/TR13 is a surface-mount DO-216 device with 30°C/W thermal resistance and integrated heat-sink tab, whereas 1N5948B is DO-41 through-hole with ~50°C/W. While both have 91 V Zener voltage, PCB layout, thermal design, and assembly process differ significantly. Migration requires redesign of footprint, thermal pads, and reflow profile-not just substitution.
What is the maximum reverse voltage (VR) before significant leakage in 1PMT5948CE3/TR13?
Per the MSC0995.PDF datasheet, the 1PMT5948CE3/TR13 exhibits ≤3000 µA reverse leakage at VR = 69.2 V. This voltage corresponds to 76% of nominal VZ (91 V) and represents the upper limit for low-leakage operation. Beyond this, leakage rises nonlinearly; for stable reference use, operation should remain above IZK = 0.25 mA and below VR = 69.2 V unless transient clamping is intended.
1PMT5948CE3/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
1PMT5948CE3/TR13 FAQ
1.How can I place an order for 1PMT5948CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5948CE3/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 1PMT5948CE3/TR13 reliable?
The price and inventory of 1PMT5948CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5948CE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5948CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5948CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5948CE3/TR13?
1PMT5948CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5948CE3/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 1PMT5948CE3/TR13?
For technical support, including 1PMT5948CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5948CE3/TR13 requirements.
6.How does Aetrix verify that 1PMT5948CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5948CE3/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 1PMT5948CE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5948CE3/TR13?
All 1PMT5948CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5948CE3/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 1PMT5948CE3/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5948CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5948CE3/TR13 Tags
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