My Inquiry
My Account
Microchip Technology 1PMT5954B/TR7
- Part No.:
- 1PMT5954B/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5954B/TR7.pdf
- Description:
- DIODE ZENER 160V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,841
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1PMT5954B/TR7 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 121.6 mA maximum Zener current - used for precision voltage regulation and overvoltage protection in high-reliability power supplies.
For engineers reviewing the 1PMT5954B/TR7 datasheet, 1PMT5954B/TR7 pinout, 1PMT5954B/TR7 application, or 1PMT5954B/TR7 equivalent, key selection criteria include its 160 V nominal Zener voltage, 3.0 W thermal capability with metallic-tab heat sinking, ESD rating >16 kV HBM, DO-216 mechanical outline, and compatibility with EIA-481 tape-and-reel automated assembly.
Technical Context
This Zener diode operates as a two-terminal voltage reference device, leveraging silicon junction physics to maintain stable reverse-biased breakdown at 160 V under controlled current conditions. Its Powermite® package integrates a full metallic bottom and locking tab to enhance thermal conduction from junction to PCB pad, enabling sustained 3.0 W dissipation when mounted on adequate copper area.
The device exhibits 700 Ω dynamic impedance (ZZT) at IZT = 2.3 mA, confirming low AC voltage variation near regulation point, and maintains ≤1 µA reverse leakage (IR) at VR = 121.6 V - critical for low-power standby regulation and sensing circuits where leakage-induced error 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 and reference stability |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables robust operation in compact SMT layouts with thermal relief pads |
| Dynamic Impedance (ZZT) | 700 Ω at IZT = 2.3 mA - indicates small-signal voltage variation under load transients |
| Max Zener Current (IZM) | 121.6 mA - sets upper limit for continuous regulation without exceeding thermal limits |
| Reverse Leakage (IR) | ≤1 µA at VR = 121.6 V - ensures minimal quiescent current in high-impedance bias networks |
| ESD Rating | >16 kV per Human Body Model - supports handling and assembly in standard electronics manufacturing environments |
| Thermal Resistance | 30°C/W junction-to-TAB1 - quantifies thermal path efficiency for PCB-level heatsinking design |
Pinout & Package
Package: Powermite® (DO-216), molded surface-mount case 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-sinking terminal and electrical cathode connection; must be soldered to thermal pad for rated 3.0 W operation |
| Lead 2 | Anode | Standard anode connection; reverse-biased during Zener operation; no thermal function |
Key Features
| Feature | Design Value |
|---|---|
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term reliability and void-free solder joints |
| Integral heat-sink locking tab | Provides mechanical anchoring and direct thermal conduction path from junction to PCB copper |
| DO-216 mechanical outline | Ensures compatibility with standard SMT pick-and-place equipment and EIA-481 tape-and-reel feeders |
| 16 kV HBM ESD rating | Reduces need for external ESD protection in board-level handling and field-deployed systems |
Applications
| Industrial Power Supply Regulation | Automotive ECUs |
|---|---|
Use Scenario: Primary overvoltage clamp in 24 V/48 V industrial DC-DC converter output stage. IC Role / Device Role / Timing Role: Zener diode acting as shunt regulator and fault-triggering element during transient overvoltage events. Use Value: 160 V clamping threshold protects downstream MOSFETs and controllers; 3.0 W rating sustains surge energy without thermal runaway. | Use Scenario: Reference voltage source for analog sensor signal conditioning in engine control units. IC Role / Device Role / Timing Role: Precision voltage reference providing stable bias for op-amp input stages and ADC references. Use Value: ±5% tolerance and low 1 µA leakage ensure accurate sensor scaling across -40°C to +125°C ambient range. |
| Telecom Line Card Protection | Medical Diagnostic Equipment |
Use Scenario: Secondary surge suppression on 48 V telecom power bus feeding line interface ICs. IC Role / Device Role / Timing Role: Fast-response overvoltage protector absorbing lightning-induced transients before they reach sensitive PHY layers. Use Value: 700 Ω dynamic impedance minimizes voltage overshoot during fast-rising surges; >16 kV HBM withstand prevents ESD damage during board insertion. | Use Scenario: Isolated voltage reference in portable ultrasound front-end analog chain. IC Role / Device Role / Timing Role: Low-noise, low-leakage Zener supplying bias for high-gain LNA stages and precision DAC buffers. Use Value: 1 µA max IR at 121.6 V avoids loading of high-impedance sensor nodes; DO-216 footprint enables miniaturized PCB layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMCJ160A | TVS diode (unidirectional), 160 V standoff, 200 W peak pulse power, higher capacitance | Designed for transient suppression only - not suitable for continuous regulation or reference use | Select only for surge-only protection; not interchangeable for voltage reference or shunt regulation roles |
| 1N5379B | Through-hole 160 V Zener, 5 W rating, TO-204AA package, higher thermal resistance (50°C/W) | Requires through-hole assembly and larger board area; less compatible with automated SMT lines | Choose only if higher power or legacy through-hole compatibility is required; not drop-in for SMT designs |
Compared with SMCJ160A and 1N5379B, the 1PMT5954B/TR7 uniquely combines SMT manufacturability, 3.0 W continuous regulation capability, and low-leakage reference-grade performance - making it optimal for space-constrained, high-reliability shunt regulation where both thermal management and precision matter.
Availability
1PMT5954B/TR7 is available at Aetrix Electronics and suitable for industrial power supplies, automotive ECUs, telecom line cards, and medical diagnostic equipment requiring stable component supply and traceable sourcing.
Supply support for 1PMT5954B/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 family was engineered for high-power-density surface-mount voltage regulation in mission-critical systems where thermal performance, ESD robustness, and automated assembly compatibility are essential.
FAQ
What is the Zener voltage tolerance for 1PMT5954B/TR7?
The 1PMT5954B/TR7 has a standard Zener voltage tolerance of ±5% at 160 V, measured at IZT = 2.3 mA with TAB 1 held at 30°C. Tighter tolerances (±2%, ±1%) are available with suffixes C and D respectively, but the base 1PMT5954B/TR7 part uses ±5%. This tolerance directly impacts regulation accuracy in precision reference applications.
Can 1PMT5954B/TR7 be used for continuous voltage regulation at 3.0 W?
Yes, the 1PMT5954B/TR7 is rated for 3.0 W DC power dissipation when TAB 1 is maintained at 60°C - achievable with appropriate PCB copper area and thermal vias. Its 30°C/W junction-to-TAB thermal resistance means the junction reaches 150°C at rated power, matching the absolute maximum storage temperature. Derating is required above 60°C ambient.
What does the "TR7" suffix indicate in 1PMT5954B/TR7?
The "TR7" suffix denotes tape-and-reel packaging per EIA-481 standard, with 3,000 pieces per 7-inch reel. This format ensures compatibility with automated SMT placement equipment and supports high-volume manufacturing. The base device marking "954" appears on the package body, consistent with the 1PMT5954B family.
How is cathode identification implemented on 1PMT5954B/TR7?
The cathode of the 1PMT5954B/TR7 is designated by TAB 1 - the larger metallic tab on the package bottom. Mechanical drawings confirm TAB 1 is the cathode terminal, and the anode is the smaller lead (Lead 2). Correct orientation is critical for proper reverse-bias operation and thermal path integrity.
Is 1PMT5954B/TR7 suitable for high-temperature automotive applications?
Yes, the 1PMT5954B/TR7 supports junction temperatures from –55°C to +150°C and is qualified for automotive underhood environments when properly thermally managed. Its 16 kV HBM ESD rating and low 1 µA leakage at 121.6 V make it suitable for engine control modules and battery management systems operating across extended temperature ranges.
1PMT5954B/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):
- 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/TR7 FAQ
1.How can I place an order for 1PMT5954B/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5954B/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 1PMT5954B/TR7 reliable?
The price and inventory of 1PMT5954B/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5954B/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5954B/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5954B/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5954B/TR7?
1PMT5954B/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5954B/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 1PMT5954B/TR7?
For technical support, including 1PMT5954B/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5954B/TR7 requirements.
6.How does Aetrix verify that 1PMT5954B/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5954B/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 1PMT5954B/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5954B/TR7?
All 1PMT5954B/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5954B/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 1PMT5954B/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5954B/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5954B/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…
