My Inquiry
My Account
onsemi MPS5172RLRM
- Part No.:
- MPS5172RLRM
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 Long Body, Formed Leads
- Datasheet:
-
MPS5172RLRM.pdf
- Description:
- TRANS NPN 25V 0.1A TO92
- Quantity:
- Payment:
- Shipping:
Inventory:5,231
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MPS5172RLRM from onsemi is an NPN silicon general-purpose transistor in TO-92 package, rated for 25 VCEO, 100 mA continuous collector current, and 625 mW power dissipation at 25°C ambient. It delivers DC current gain (hFE) of 100–500 at 10 mA/10 V, with VCE(sat) ≤ 0.25 V and VBE(on) = 0.5–1.25 V - commonly used in low-voltage switching, signal amplification, and discrete logic interface circuits.
For engineers reviewing the MPS5172RLRM datasheet, pinout, applications, or equivalent options, key selection criteria include its TO-92 leaded package compatibility, guaranteed hFE range, thermal resistance (RJA = 200°C/W), and Pb-free ammo-pack packaging configuration for automated assembly.
Technical Context
This NPN bipolar junction transistor operates in active, saturation, and cutoff regions with validated performance across −55°C to +150°C junction temperature range. Its small-signal current gain (hfe) spans 100–750 at 10 mA/10 V/1 kHz, and collector-base capacitance is specified at 1.6–10 pF under 10 V reverse bias.
The device supports pulsed operation up to 300 µs width and 2% duty cycle, with safe operating area (SOA) curves defined for thermal and second-breakdown limits. Thermal response data enables transient junction temperature estimation using normalized r(t) curves and RJA = 200°C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 25 V - Maximum collector-emitter voltage before breakdown; defines upper rail limit in low-voltage switch designs. |
| IC (continuous) | 100 mA - Sustained collector current capability; suitable for driving LEDs, relays, or small-signal loads. |
| hFE | 100–500 - DC current gain range at 10 mA/10 V; ensures predictable base drive sizing in linear or saturated switching. |
| VCE(sat) | ≤ 0.25 V - Low saturation voltage at IC/IB = 10; minimizes conduction loss in digital switching applications. |
| RJA | 200°C/W - Junction-to-ambient thermal resistance; determines required PCB copper area or heatsinking for 625 mW dissipation. |
| TJ range | −55°C to +150°C - Validated operating junction temperature span; supports industrial and automotive under-hood environments. |
Pinout & Package
Package: TO-92 (Case 29, Style 1), through-hole, Pb-free, 3-lead plastic package with standardized lead spacing and mechanical dimensions per ANSI Y14.5M.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter | Current exit terminal; connected to ground or low-side reference in common-emitter configurations. |
| 2 | Base | Control input; requires current-limited drive (e.g., via series resistor) to bias transistor into active/saturation. |
| 3 | Collector | Current entry terminal; tied to load and supply rail in low-side switch topologies. |
Key Features
| Feature | Design Value |
|---|---|
| Pb-free construction | Complies with RoHS Directive 2011/65/EU; compatible with lead-free reflow and wave soldering processes. |
| Guaranteed hFE range | 100–500 at 10 mA/10 V ensures consistent gain behavior across production lots for reliable circuit design. |
| Low VCE(sat) | ≤ 0.25 V at IC = 10 mA / IB = 1 mA reduces power loss and self-heating in high-duty-cycle switching. |
| Wide TJ range | −55°C to +150°C operation supports deployment in uncontrolled ambient environments without derating penalties. |
Applications
| LED Driver Circuit | Microcontroller Interface |
|---|---|
Use Scenario: Driving 20 mA indicator LEDs from 3.3 V or 5 V microcontroller GPIO pins. IC Role / Device Role / Timing Role: Discrete NPN switch providing current amplification and level translation between logic-level control and LED load. Use Value: Enables direct GPIO drive without exceeding MCU output current limits while maintaining <0.25 V dropout for efficient LED forward voltage utilization. | Use Scenario: Level-shifting and signal inversion between mixed-voltage logic domains (e.g., 3.3 V MCU to 5 V peripheral). IC Role / Device Role / Timing Role: Active-low inverting buffer with TTL-compatible input threshold and CMOS-compatible output swing. Use Value: Provides robust noise margin and fast edge response due to verified hfe ≥ 100 and fT > 50 MHz at 10 mA. |
| Relay Driver Stage | Discrete Amplifier Stage |
Use Scenario: Switching 12 V/40 mA electromagnetic relay coils in industrial control panels. IC Role / Device Role / Timing Role: Low-side switch with flyback diode integration support; handles inductive kickback during coil de-energization. Use Value: Withstands VCEO = 25 V and offers 100 mA IC headroom, ensuring reliable turn-off and long-term contact life. | Use Scenario: Building a single-stage preamplifier for audio or sensor signals in cost-sensitive analog front-ends. IC Role / Device Role / Timing Role: Common-emitter amplifier biased for Class-A operation with stable hFE-based gain setting. Use Value: Delivers predictable small-signal gain (hfe = 100–750) and low distortion at 1 kHz, validated by typical static characteristic curves. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN general-purpose transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPS5172RLRMG | Pb-free variant with identical electrical specs and TO-92 package; differs only in packaging format (ammo pack vs. bulk) and marking (includes 'G' suffix). | No functional difference; selected when RoHS compliance documentation traceability is required for final assembly audit. | Choose MPS5172RLRMG if full Pb-free chain-of-custody reporting is mandated; otherwise MPS5172RLRM is functionally identical. |
| BC547B | hFE range 200–450 (vs. 100–500); VCEO = 45 V; RJA = 200°C/W; same TO-92 package and pinout. | Higher voltage rating allows use in 24 V systems; tighter hFE binning may simplify base resistor design but reduces margin for worst-case gain variation. | Choose BC547B only when higher VCEO is needed; MPS5172RLRM remains preferred for 25 V max systems requiring broader hFE tolerance. |
Compared with MPS5172RLRMG, the original part shares identical die and specifications but uses non-G-marked packaging; versus BC547B, MPS5172RLRM trades higher voltage headroom for wider hFE range and onsemi's documented thermal response data for transient thermal design.
Availability
MPS5172RLRM is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller interface stages, and relay driver applications requiring stable component supply, consistent parametric performance, and Pb-free manufacturing compliance.
Supply support for MPS5172RLRM 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications.
The MPS5172RLRM belongs to onsemi's general-purpose bipolar transistor product line, designed for cost-sensitive, high-reliability discrete switching and amplification in consumer, industrial, and computing equipment.
FAQ
What is the maximum continuous collector current rating for MPS5172RLRM?
The MPS5172RLRM is rated for 100 mA continuous collector current (IC) at TA = 25°C. Derating applies above 25°C at 5.0 mW/°C, reducing usable current in elevated ambient conditions. This rating is validated per onsemi's published maximum ratings table and supports typical low-power switching loads such as indicator LEDs and small relays.
Does MPS5172RLRM have Pb-free construction?
Yes, MPS5172RLRM is Pb-free and complies with RoHS Directive 2011/65/EU. The device uses lead-free terminations and packaging materials, and is qualified for standard lead-free reflow profiles. This is confirmed in the ordering information section of the official MPS5172/D datasheet and marked as "Pb−Free Package" in the package description.
What is the collector-emitter saturation voltage (VCE(sat)) specification for MPS5172RLRM?
The MPS5172RLRM has a maximum VCE(sat) of 0.25 V when tested at IC = 10 mA and IB = 1.0 mA. This value is specified under standard test conditions (TA = 25°C) and reflects the device's low-loss performance in saturated switching applications, directly enabling efficient low-voltage load control.
Is MPS5172RLRM pin-compatible with other TO-92 NPN transistors like BC547?
MPS5172RLRM uses standard TO-92 pinout (Emitter-Base-Collector on pins 1-2-3), matching BC547 and most industry-standard TO-92 NPN transistors. However, electrical parameters differ - notably VCEO (25 V vs. 45 V) and hFE range (100–500 vs. 200–450). Physical compatibility does not guarantee functional drop-in replacement without circuit validation.
What thermal resistance values are specified for MPS5172RLRM?
MPS5172RLRM specifies RJA = 200°C/W (junction-to-ambient) and RJC = 83.3°C/W (junction-to-case) at TA = 25°C. These values are critical for estimating junction temperature rise under steady-state or pulsed power dissipation and are provided in the Thermal Characteristics table of the official datasheet.
MPS5172RLRM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 Long Body, Formed Leads
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 25 V
- Vce Saturation (Max) @ Ib, Ic:
- 250mV @ 1mA, 10mA
- Current - Collector Cutoff (Max):
- 100nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 10mA, 10V
- Power - Max:
- 625 mW
- Frequency - Transition:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92 (TO-226)
MPS5172RLRM FAQ
1.How can I place an order for MPS5172RLRM through Aetrix?
Please submit a Request for Quotation (RFQ) for MPS5172RLRM 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 MPS5172RLRM reliable?
The price and inventory of MPS5172RLRM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPS5172RLRM is usually 5 days.
3.What payment methods are accepted for MPS5172RLRM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPS5172RLRM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPS5172RLRM?
MPS5172RLRM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPS5172RLRM 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 MPS5172RLRM?
For technical support, including MPS5172RLRM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPS5172RLRM requirements.
6.How does Aetrix verify that MPS5172RLRM is sourced from the original manufacturer or authorized distributors?
All MPS5172RLRM 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 MPS5172RLRM meets industry standards.
7.What is the process for return or replacement of MPS5172RLRM?
All MPS5172RLRM units undergo pre-shipment inspection (PSI). If there is an issue with MPS5172RLRM, 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 MPS5172RLRM part is unused and in its original packaging.
Return procedure for MPS5172RLRM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPS5172RLRM Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
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…
