My Inquiry
My Account
Microchip Technology 1PMT5950B/TR7
- Part No.:
- 1PMT5950B/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5950B/TR7.pdf
- Description:
- DIODE ZENER 110V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,539
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1PMT5950B/TR7 from Microsemi is a 110 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 300 Ω dynamic impedance at 3.4 mA test current and 4000 µA max reverse leakage at 83.6 V. It serves as a precision voltage reference or overvoltage clamp in high-reliability power supply feedback loops.
For engineers reviewing the 1PMT5950B/TR7 datasheet, 1PMT5950B/TR7 pinout, 1PMT5950B/TR7 application, or 1PMT5950B/TR7 equivalent, key selection criteria include its 110 V nominal Zener voltage, 3.0 W thermal capability with metallic-tab heatsinking, DO-216 mechanical outline, and ESD rating >16 kV HBM - critical for industrial power rail protection and automotive body control modules.
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 ensure low thermal resistance (30°C/W junction-to-TAB1) and reliable solder joint formation without flux entrapment.
The device exhibits low knee impedance (≤4000 Ω at IZK = 1 mA) and stable Zener voltage under transient conditions, validated per Microsemi Note 202 for voltage drift versus current deviation. Reverse leakage remains ≤4000 µA at VR = 83.6 V, supporting robust hold-off performance in crowbar circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 110 V ±5% at IZT = 3.4 mA - defines precise clamping threshold for 120 V AC-derived rails |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables compact board-level surge suppression without external heatsink |
| Dynamic Impedance (ZZT) | 300 Ω at IZT = 3.4 mA - ensures minimal voltage shift under load transients in feedback networks |
| Reverse Leakage (IR) | ≤4000 µA at VR = 83.6 V - guarantees low standby current in high-impedance sensing paths |
| Thermal Resistance | 30°C/W junction-to-TAB1 - allows direct thermal coupling to PCB copper pour for sustained 3 W operation |
| ESD Rating | >16 kV HBM - provides intrinsic handling robustness during SMT assembly and field deployment |
Pinout & Package
Package: Powermite® (DO-216), molded surface-mount 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 path and voltage reference node; must be connected to ground or low-impedance return plane |
| Lead 2 | Anode | Current entry point during forward bias; used for polarity verification and functional testing |
Key Features
| Feature | Design Value |
|---|---|
| Integral heat-sink locking tab | Enables direct thermal conduction from junction to PCB copper, reducing thermal derating in confined layouts |
| Full metallic bottom | Eliminates solder flux entrapment risk during reflow, improving long-term solder joint reliability |
| Automated insertion compatibility | Standardized tape-and-reel packaging (EIA-481, 7″/3000 pcs) supports high-speed pick-and-place placement |
| Low reverse leakage at high VR | 4000 µA max at 83.6 V ensures stable clamping margin in 110 V nominal systems |
Applications
| Industrial Power Supply Feedback | Automotive Body Control Module |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters using optocoupler-coupled feedback. IC Role / Device Role / Timing Role: Zener reference establishing precise 110 V threshold for TL431-like error amplifier biasing. Use Value: Maintains ±1% output regulation across line/load transients due to tight 5% VZ tolerance and low ZZT. | Use Scenario: Overvoltage protection on 12 V battery-supplied microcontroller I/O lines exposed to load-dump events. IC Role / Device Role / Timing Role: Clamp device shunting excess energy above 110 V to prevent MCU damage during ISO 7637-2 Pulse 5a. Use Value: Withstands 3.0 W peak dissipation and >16 kV ESD, eliminating need for secondary TVS staging. |
| Telecom Line Card Protection | Medical Imaging Power Rail Clamp |
Use Scenario: Protecting analog front-end circuitry on DSL line cards from induced surges on twisted-pair interfaces. IC Role / Device Role / Timing Role: Primary Zener clamp limiting common-mode voltage excursions on differential receivers. Use Value: Low 300 Ω ZZT ensures fast response to sub-µs transients while maintaining signal integrity below clamping threshold. | Use Scenario: Safeguarding high-voltage X-ray generator control logic against switching-induced transients on 100–120 V auxiliary rails. IC Role / Device Role / Timing Role: Precision voltage limiter referenced to system ground, interfacing with isolated ADC monitoring circuits. Use Value: Stable 110 V reference with ≤4000 µA leakage enables accurate rail telemetry without loading sensitive measurement nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMCJ110A | TVS diode (unidirectional), 110 V standoff, 1500 W peak pulse power, higher capacitance (150 pF) | Designed for transient suppression only; not suitable for precision DC regulation | Select when surge energy exceeds 3 W continuous dissipation but DC regulation is not required |
| 1N5375B | Through-hole 110 V Zener, 5 W rating, DO-201AD package, no integrated heatsink tab | Larger footprint, higher thermal resistance (50°C/W), requires external heatsinking for 3 W operation | Select when legacy through-hole assembly is mandated and board space permits larger footprint |
Compared with SMCJ110A and 1N5375B, the 1PMT5950B/TR7 uniquely combines surface-mount compatibility, integrated thermal management via metallic tab, and precision DC regulation capability - making it optimal for space-constrained, high-reliability DC clamp and reference designs where both steady-state accuracy and transient resilience matter.
Availability
1PMT5950B/TR7 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, telecom line card protection, and medical imaging power rail clamp applications requiring stable component supply and traceable sourcing.
Supply support for 1PMT5950B/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 semiconductor company specializing in high-reliability analog, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The Powermite® Zener series, including the 1PMT5950B/TR7, was engineered for high-power-density surface-mount voltage regulation and transient clamping in mission-critical power systems where thermal performance and assembly reliability are paramount.
FAQ
What is the Zener voltage tolerance for 1PMT5950B/TR7?
The 1PMT5950B/TR7 has a standard Zener voltage tolerance of ±5% at 110 V nominal, measured at IZT = 3.4 mA with TAB 1 held at 30°C. Tighter tolerances (±2%, ±1%) are available with suffixes C and D, respectively, but the base 1PMT5950B/TR7 uses the ±5% grade. This tolerance directly impacts regulation accuracy in feedback and clamp circuits.
How is thermal management handled in the 1PMT5950B/TR7 package?
The 1PMT5950B/TR7 uses Microsemi's Powermite® package with a full metallic bottom and integral locking tab that serves as the primary thermal path. Its junction-to-TAB1 thermal resistance is 30°C/W, enabling efficient heat transfer to the PCB copper. For reliable 3.0 W operation, TAB 1 must be soldered to a thermally robust pad with adequate copper area and vias.
Can 1PMT5950B/TR7 be used in place of a through-hole Zener like 1N5375B?
The 1PMT5950B/TR7 is not a direct drop-in replacement for 1N5375B due to differing packages (DO-216 vs. DO-201AD), thermal paths, and mounting methods. While both are 110 V Zeners, the 1PMT5950B/TR7 relies on TAB 1 for heatsinking and requires SMT layout optimization. PCB redesign is necessary to accommodate its surface-mount footprint and thermal pad requirements.
What is the maximum reverse leakage current for 1PMT5950B/TR7 at rated voltage?
At VR = 83.6 V (76% of nominal 110 V), the 1PMT5950B/TR7 specifies a maximum reverse leakage current of 4000 µA. This value ensures sufficient margin before reaching the Zener breakdown region and is critical for minimizing standby power loss in high-impedance bias networks where the 1PMT5950B/TR7 is used as a reference.
Is the 1PMT5950B/TR7 suitable for automotive applications requiring AEC-Q200 compliance?
The 1PMT5950B/TR7 is not AEC-Q200 qualified. While it meets industrial temperature range (-55°C to +150°C) and offers >16 kV HBM ESD robustness, formal automotive qualification requires additional stress testing and documentation. For AEC-Q200-compliant alternatives, consult Microchip's automotive-grade Zener portfolio - the 1PMT5950B/TR7 is intended for industrial and telecom use cases.
1PMT5950B/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):
- 110 V
- Tolerance:
- ±5%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 300 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 83.6 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
1PMT5950B/TR7 FAQ
1.How can I place an order for 1PMT5950B/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5950B/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 1PMT5950B/TR7 reliable?
The price and inventory of 1PMT5950B/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5950B/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5950B/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5950B/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5950B/TR7?
1PMT5950B/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5950B/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 1PMT5950B/TR7?
For technical support, including 1PMT5950B/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5950B/TR7 requirements.
6.How does Aetrix verify that 1PMT5950B/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5950B/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 1PMT5950B/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5950B/TR7?
All 1PMT5950B/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5950B/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 1PMT5950B/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5950B/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5950B/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…
