My Inquiry
My Account
Microchip Technology 1PMT5943AE3/TR7
- Part No.:
- 1PMT5943AE3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5943AE3/TR7.pdf
- Description:
- DIODE ZENER 56V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,848
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1PMT5943AE3/TR7 from Microsemi is a 56 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 86 Ω dynamic impedance at 6.7 mA test current and 1300 µA max reverse leakage at 42.6 V. It serves as a precision voltage reference or overvoltage clamp in DC power rails and regulator feedback networks.
For engineers reviewing the 1PMT5943AE3/TR7 datasheet, 1PMT5943AE3/TR7 pinout, 1PMT5943AE3/TR7 application, or 1PMT5943AE3/TR7 equivalent, key selection criteria include Zener voltage tolerance, 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 with tightly controlled voltage regulation across its specified test current range. Its Powermite® package integrates a full metallic bottom and locking tab to enhance thermal conduction and mechanical stability during reflow soldering.
The device exhibits low reverse leakage (≤1300 µA at VR = 42.6 V), 30°C/W thermal resistance from junction to TAB 1, and is characterized at TL = 30°C with voltage measurement performed 20 seconds after DC current application per Note 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 56 V ±5% - stable regulation point for feedback or clamping at nominal 6.7 mA test current |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables high-power operation without external heatsink in compact layouts |
| Dynamic Impedance (ZZT) | 86 Ω at IZT = 6.7 mA - low AC impedance ensures minimal voltage deviation under varying load currents |
| Reverse Leakage (IR) | ≤1300 µA at VR = 42.6 V - low off-state current preserves efficiency in standby or sensing circuits |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - supports reliable thermal management when mounted on copper pads |
| ESD Rating | >16 kV per Human Body Model - robust handling in automated assembly and end-use environments |
| Knee Impedance (ZZK) | 0.25 Ω at IZK = 0.25 mA - sharp turn-on characteristic improves low-current regulation accuracy |
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-dissipating terminal; must be connected to thermal pad or ground plane for rated 3.0 W operation |
| Lead 2 | Anode | Standard anode connection; electrically isolated from TAB 1; used for series bias or sensing paths |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables automated placement and reflow while delivering 3.0 W power handling previously limited to larger through-hole packages |
| Integral heat-sink locking tab | Provides mechanical anchoring and direct thermal path from junction to PCB copper, reducing thermal resistance to 30°C/W |
| Full metallic bottom | Eliminates solder flux entrapment risk during assembly, improving long-term reliability and solder joint integrity |
| ESD robustness | >16 kV HBM rating allows safe handling in standard manufacturing environments without special ESD controls |
| Tight Zener tolerance option | Available in ±2% (suffix C) and ±1% (suffix D) for precision reference applications requiring higher voltage accuracy |
Applications
| DC Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing output voltage in linear regulators or providing reference voltage for switching controller ICs. IC Role / Device Role / Timing Role: Zener reference element in feedback divider network or shunt regulator configuration. Use Value: Delivers 56 V ±5% regulation with 86 Ω dynamic impedance, minimizing output drift under load transients. | Use Scenario: Clamping transient surges on 48 V industrial bus lines or telecom power inputs. IC Role / Device Role / Timing Role: Shunt protection device that conducts above 56 V to divert excess energy to ground. Use Value: Handles 3.0 W peak dissipation during surge events while maintaining low leakage (<1300 µA) during normal operation. |
| Automated Test Equipment (ATE) | Industrial Sensor Signal Conditioning |
Use Scenario: Providing stable bias voltage for precision DACs or ADC reference buffers in ATE systems. IC Role / Device Role / Timing Role: Low-noise voltage reference source with tight tolerance and low dynamic impedance. Use Value: Ensures <±0.5 V error margin over temperature due to 30°C/W thermal resistance and stable 56 V Zener point. | Use Scenario: Level-shifting and voltage limiting for analog sensor outputs before ADC input stages. IC Role / Device Role / Timing Role: Clamp diode protecting downstream signal chain from overvoltage faults. Use Value: >16 kV HBM ESD rating prevents damage during field maintenance or probe contact events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5355B | Same 56 V nominal Zener voltage but DO-41 package; 5 W rating; higher thermal resistance (~65°C/W) | Requires through-hole mounting and larger board area; better suited for prototyping or low-volume through-hole designs | Select 1N5355B only if through-hole assembly is mandated and higher power headroom is needed |
| BZX84-C56 | SOT-23 package; 56 V ±5%; 300 mW rating; 150 Ω dynamic impedance; no metallic thermal tab | Limited to low-power signal-level clamping; unsuitable for 3.0 W continuous dissipation or high-current regulation | Choose BZX84-C56 only for space-constrained, low-power signal conditioning where thermal performance is secondary |
Compared with 1N5355B and BZX84-C56, the 1PMT5943AE3/TR7 uniquely combines SMT compatibility, 3.0 W power capability, and 30°C/W thermal resistance via its Powermite® metallic tab-making it the only option among the three viable for high-reliability, high-power surface-mount voltage regulation.
Availability
1PMT5943AE3/TR7 is available at Aetrix Electronics and suitable for DC power supply regulation, overvoltage protection circuits, and industrial sensor signal conditioning requiring stable component supply and consistent Zener voltage performance across production batches.
Supply support for 1PMT5943AE3/TR7 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-including 1PMT5943AE3/TR7-is engineered for high-power surface-mount voltage regulation and transient suppression in harsh-environment power systems where thermal performance and assembly robustness are critical.
FAQ
What is the Zener voltage tolerance for 1PMT5943AE3/TR7?
The 1PMT5943AE3/TR7 has a standard Zener voltage tolerance of ±5% at 56 V, measured at 6.7 mA test current with TAB 1 held at 30°C. Tighter tolerances of ±2% (suffix C) and ±1% (suffix D) are available upon request, but the base 1PMT5943AE3/TR7 variant ships with ±5% as specified in MSC0995 Rev F.
How is thermal performance specified for 1PMT5943AE3/TR7?
The 1PMT5943AE3/TR7 has a junction-to-TAB 1 thermal resistance of 30°C/W, enabling 3.0 W DC power dissipation when TAB 1 is maintained at 60°C. This requires adequate copper area and thermal vias beneath TAB 1; derating is necessary above 60°C ambient or with insufficient PCB thermal mass.
Is 1PMT5943AE3/TR7 compatible with automated SMT assembly?
Yes, the 1PMT5943AE3/TR7 is supplied in EIA-481 compliant tape-and-reel format (7″ reel: 3,000 pcs; 13″ reel: 12,000 pcs) and features a Powermite® package designed specifically for compatibility with automatic insertion and reflow equipment, including flux-free assembly due to its full metallic bottom.
What is the maximum reverse leakage current for 1PMT5943AE3/TR7?
The 1PMT5943AE3/TR7 specifies a maximum reverse leakage current (IR) of 1300 µA at a reverse voltage (VR) of 42.6 V, measured at TL = 30°C. This value reflects worst-case leakage under defined test conditions and remains well below typical design thresholds for low-power standby circuits.
Does 1PMT5943AE3/TR7 have ESD protection built-in?
Yes, the 1PMT5943AE3/TR7 is rated for >16 kV electrostatic discharge per the Human Body Model (HBM), verified per JEDEC JS-001. This level of ESD robustness eliminates the need for additional protection circuitry during handling and board assembly, supporting high-yield automated manufacturing.
1PMT5943AE3/TR7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-216AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 56 V
- Tolerance:
- ±10%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 86 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 42.6 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
1PMT5943AE3/TR7 FAQ
1.How can I place an order for 1PMT5943AE3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5943AE3/TR7 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 1PMT5943AE3/TR7 reliable?
The price and inventory of 1PMT5943AE3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5943AE3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5943AE3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5943AE3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5943AE3/TR7?
1PMT5943AE3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5943AE3/TR7 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 1PMT5943AE3/TR7?
For technical support, including 1PMT5943AE3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5943AE3/TR7 requirements.
6.How does Aetrix verify that 1PMT5943AE3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5943AE3/TR7 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 1PMT5943AE3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5943AE3/TR7?
All 1PMT5943AE3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5943AE3/TR7, 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 1PMT5943AE3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5943AE3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5943AE3/TR7 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
