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Microchip Technology 1PMT5954B/TR13
- Part No.:
- 1PMT5954B/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5954B/TR13.pdf
- Description:
- DIODE ZENER 160V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,155
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Product details
Overview
1PMT5954B/TR13 from Microsemi is a 160 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 700 Ω dynamic impedance at 2.3 mA test current and reverse leakage ≤1 µA at 121.6 V, used for precision voltage regulation and overvoltage protection in industrial power supplies.
For engineers reviewing the 1PMT5954B/TR13 datasheet, 1PMT5954B/TR13 pinout, 1PMT5954B/TR13 application, or 1PMT5954B/TR13 equivalent, key selection criteria include zener voltage accuracy, thermal resistance (30°C/W junction-to-TAB), ESD rating (>16 kV HBM), low knee current (0.25 mA), and compatibility with automated SMT assembly per EIA-481 tape-and-reel packaging.
Technical Context
This device operates as a two-terminal voltage reference diode with cathode designated by TAB 1, requiring no external biasing circuitry. Its full metallic bottom and integral heat sink locking tab enable direct thermal conduction to PCB copper, supporting stable regulation under transient load conditions.
The 1PMT5954B/TR13 exhibits tight voltage control across temperature (–55°C to +150°C junction range) and maintains low reverse leakage (≤1 µA at VR = 121.6 V), enabling reliable clamping in high-impedance sensing nodes and feedback loops where leakage-induced offset must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 160 V ±5% at IZT = 2.3 mA - defines precise clamping threshold for overvoltage protection circuits |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables robust operation without external heatsink in compact power rails |
| Dynamic Impedance (ZZT) | 700 Ω at IZT = 2.3 mA - determines regulation stiffness and output voltage variation under load changes |
| Knee Current (IZK) | 0.25 mA - minimum current needed to enter regulated region; critical for low-power standby circuits |
| Reverse Leakage (IR) | ≤1 µA at VR = 121.6 V - ensures negligible error current in high-impedance voltage divider networks |
| Thermal Resistance | 30°C/W junction-to-TAB - quantifies thermal path efficiency to PCB copper pad for thermal management |
| ESD Rating | >16 kV per Human Body Model - provides intrinsic handling robustness during SMT assembly and field operation |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral heat sink locking tab; cathode identified by TAB 1; compatible with EIA-481 tape-and-reel (TR13 = 13-inch reel, 12,000 pcs).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary thermal and electrical connection point; must be soldered to large copper area for heat dissipation and circuit return |
| Lead 2 | Anode | Standard anode terminal; connects to positive rail or signal source in reverse-biased configuration |
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-214AC |
| Full metallic bottom | Eliminates solder flux entrapment risk during reflow, improving long-term reliability of solder joints |
| Integral heat sink locking tab | Provides mechanical anchoring and direct thermal conduction path from junction to PCB copper |
| ESD robustness | >16 kV HBM rating reduces need for external ESD protection in board-level surge designs |
Applications
| Industrial Power Supply Regulation | Automotive ECUs – Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated DC-DC converters operating up to 200 V input. IC Role / Device Role / Timing Role: Zener reference diode providing precise 160 V clamp on optocoupler input side. Use Value: Maintains regulation accuracy within ±5% across –40°C to +125°C ambient, minimizing output drift. | Use Scenario: Protecting 12 V/24 V automotive microcontroller I/O pins against load dump transients. IC Role / Device Role / Timing Role: Standby-mode overvoltage clamp absorbing energy spikes up to 121.6 V. Use Value: Low 0.25 mA knee current ensures activation before downstream IC damage occurs. |
| Test Equipment – Precision Reference | Telecom Line Card Protection |
Use Scenario: Generating stable 160 V bias for photomultiplier tube (PMT) anode chains. IC Role / Device Role / Timing Role: High-voltage reference element with <1 µA leakage ensuring minimal current injection into sensitive analog paths. Use Value: Tight 5% tolerance and 700 Ω dynamic impedance support sub-0.1% measurement repeatability. | Use Scenario: Secondary-stage surge suppression on -48 V telecom power feeds. IC Role / Device Role / Timing Role: Fast-response clamping diode shunting transient energy to ground via TAB 1. Use Value: 30°C/W thermal resistance allows sustained 3.0 W dissipation without derating in confined chassis space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5954B | Same 160 V zener voltage and ±5% tolerance, but in DO-41 axial package; higher thermal resistance (~65°C/W) | Requires through-hole mounting and larger board area; unsuitable for high-density SMT layouts | Select when legacy through-hole design or manual repair is required; avoid for new SMT production |
| SMBJ160A | TVS diode with 160 V standoff voltage and 600 W peak pulse power; not a regulated Zener (no tight VZ tolerance) | Designed for transient suppression only; cannot replace 1PMT5954B/TR13 in precision regulation roles | Use only for surge-only protection; never as voltage reference due to wide VBR tolerance and no DC regulation capability |
Compared with 1N5954B and SMBJ160A, the 1PMT5954B/TR13 uniquely combines SMT-compatible Powermite® packaging, 3.0 W continuous DC power handling, and ±5% zener voltage tolerance-making it irreplaceable for space-constrained, thermally demanding, precision-clamp applications where both regulation accuracy and thermal performance are critical.
Availability
1PMT5954B/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive ECUs, test equipment reference circuits, and telecom line card protection requiring stable component supply and consistent parametric performance across production lots.
Supply support for 1PMT5954B/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 family-including the 1PMT5954B/TR13-is engineered for high-power density voltage regulation in space-constrained, thermally aggressive environments where traditional axial or DO-214 packages fail to meet thermal or automation requirements.
FAQ
What is the zener voltage tolerance for 1PMT5954B/TR13?
The 1PMT5954B/TR13 has a standard zener voltage tolerance of ±5% at 160 V nominal, measured at 2.3 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 TR13 variant ships with standard ±5% unless otherwise specified.
How is thermal management handled in the 1PMT5954B/TR13 package?
The 1PMT5954B/TR13 uses a Powermite® package with a full metallic bottom and integral heat sink locking tab that directly conducts heat from the silicon junction to the PCB copper pad. Its specified thermal resistance is 30°C/W junction-to-TAB, meaning effective thermal design requires a minimum 100 mm² copper pour connected to TAB 1 for full 3.0 W dissipation.
Can 1PMT5954B/TR13 be used in place of axial 1N5954B in existing designs?
No-while the 1PMT5954B/TR13 and 1N5954B share identical electrical specs (160 V, ±5%, 3.0 W), they differ fundamentally in package: Powermite® is surface-mount with TAB 1 cathode, whereas 1N5954B is axial DO-41. Direct substitution requires PCB redesign, reflow profile validation, and thermal analysis due to differing thermal paths and mounting methods.
What is the maximum reverse voltage (VR) at which 1PMT5954B/TR13 guarantees ≤1 µA leakage?
The 1PMT5954B/TR13 guarantees reverse leakage current ≤1 µA at a reverse voltage (VR) of 121.6 V, as specified in the Electrical Characteristics table. This VR value corresponds to 76% of the nominal 160 V zener voltage and defines the upper limit of safe non-regulating operation before significant leakage begins.
Is 1PMT5954B/TR13 compatible with lead-free reflow profiles?
Yes-the 1PMT5954B/TR13 Powermite® package is qualified for standard lead-free reflow processes (JEDEC J-STD-020), with a maximum peak temperature of 260°C. Its molded construction and metallic bottom ensure mechanical stability and void-free solder joints under typical Pb-free thermal profiles used in industrial SMT lines.
1PMT5954B/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):
- 160 V
- Tolerance:
- ±5%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 700 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 121.6 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
1PMT5954B/TR13 FAQ
1.How can I place an order for 1PMT5954B/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5954B/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 1PMT5954B/TR13 reliable?
The price and inventory of 1PMT5954B/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5954B/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5954B/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5954B/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5954B/TR13?
1PMT5954B/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5954B/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 1PMT5954B/TR13?
For technical support, including 1PMT5954B/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5954B/TR13 requirements.
6.How does Aetrix verify that 1PMT5954B/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5954B/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 1PMT5954B/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5954B/TR13?
All 1PMT5954B/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5954B/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 1PMT5954B/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5954B/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5954B/TR13 Tags
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