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onsemi MPSA14_D75Z
- Part No.:
- MPSA14_D75Z
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
MPSA14_D75Z.pdf
- Description:
- TRANS NPN DARL 30V 1.2A TO-92-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,554
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Product details
Overview
MPSA14_D75Z from ON Semiconductor is an NPN Darlington transistor designed for high-current-switching applications requiring extreme DC current gain (hFE ≥ 10,000) at collector currents up to 100 mA, with VCE(sat) ≤ 1.5 V and VBE(on) ≈ 2.0 V - commonly used in relay drivers, lamp drivers, and low-speed power interface stages.
For engineers reviewing the MPSA14_D75Z datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed hFE > 10 k at 10 mA, TO-92 package thermal resistance (RθJA = 200 °C/W), VCES = 30 V rating, and compatibility with standard through-hole PCB layouts using emitter-first radial ammo packaging (D75Z).
Technical Context
This device implements a monolithic two-stage NPN Darlington configuration optimized for high β and low saturation voltage under moderate load conditions. It features a maximum continuous collector current of 1.2 A and operates across –55 °C to +150 °C junction temperature range.
Its electrical behavior is characterized by tight control of VBE(on) (2.0 V typical at IC = 100 mA), low leakage (ICBO ≤ 100 nA at VCB = 30 V), and fT = 125 MHz - enabling reliable use in DC-coupled switching rather than RF amplification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCES | 30 V - supports switching of 24 V industrial control loads with margin against transients. |
| IC (continuous) | 1.2 A - enables direct drive of small relays, solenoids, or LED arrays without external current boosting. |
| hFE | ≥10,000 at IC = 10 mA - allows microcontroller GPIOs (e.g., 5 mA output) to fully saturate the transistor with minimal base drive. |
| VCE(sat) | ≤1.5 V at IC = 100 mA, IB = 0.1 mA - limits power dissipation to <150 mW in saturated switching mode. |
| RθJA | 200 °C/W - requires no heatsink for ≤300 mW dissipation in still-air TO-92 mounting. |
| fT | 125 MHz - confirms usable bandwidth beyond audio frequencies but not suitable for RF signal amplification. |
Pinout & Package
Package: TO-92 (standard straight-lead, non-lead-clipped, radial ammo format per EOL code D75Z). Pin orientation follows JEDEC TO-92 outline with flat side facing viewer and leads downward: Emitter (first wire off), Collector (second), Base (third).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 (leftmost, when flat side faces viewer) | Emitter | Common return path; connects directly to ground or low-side load return in most switching configurations. |
| Lead 2 (center) | Collector | High-current output node; ties to load (e.g., relay coil anode or lamp cathode) and supply rail via series resistor or direct connection. |
| Lead 3 (rightmost) | Base | Control input; driven by logic-level signal (e.g., MCU GPIO) through current-limiting resistor to set operating point. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-high DC current gain | hFE ≥ 10,000 at 10 mA ensures full saturation with sub-mA base drive - reduces MCU port loading and simplifies bias network design. |
| Low VCE(sat) | ≤1.5 V at rated IC/IB minimizes conduction loss and self-heating during sustained on-state operation. |
| Wide operating temperature | –55 °C to +150 °C junction range supports deployment in automotive engine compartments and industrial enclosures without derating. |
| TO-92 mechanical compatibility | D75Z ammo packaging aligns with standard pick-and-place feeders and manual prototyping workflows - no adapter required. |
| Low leakage performance | ICBO ≤ 100 nA at 30 V enables stable off-state behavior in battery-powered systems with multi-year standby requirements. |
Applications
| Relay Driver Stage | Lamp/LED Array Switch |
|---|---|
|
Use Scenario: Driving 12 V/24 V electromagnetic relays in PLC I/O modules or HVAC control panels. IC Role / Device Role / Timing Role: High-gain switch that converts 3.3 V/5 V logic signals into sufficient collector current (≥100 mA) to energize relay coils. Use Value: Eliminates need for dual-transistor driver stages - single MPSA14_D75Z provides adequate hFE and VCE(sat) to guarantee relay pull-in under worst-case voltage drop. |
Use Scenario: Controlling incandescent or high-brightness LED strings in signage, instrumentation backlighting, or automotive interior lighting. IC Role / Device Role / Timing Role: Low-side constant-current switch managing up to 1 A peak load with minimal base drive overhead. Use Value: Enables direct GPIO control from low-power MCUs (e.g., STM32L0) without external level-shifting or buffer ICs - reducing BOM count and board area. |
| DC Motor Starter | Power Supply Enable Circuit |
|
Use Scenario: Starting brushed DC motors (e.g., 5–24 V, <500 mA) in robotics, actuators, or consumer appliances. IC Role / Device Role / Timing Role: Inrush-current-tolerant switch handling motor stall current while maintaining safe junction temperature. Use Value: RθJA = 200 °C/W and IC = 1.2 A rating allow brief stall conditions without thermal shutdown - critical for open-loop start-up sequences. |
Use Scenario: Enabling/disabling auxiliary rails (e.g., 5 V standby → 12 V main) in embedded power management subsystems. IC Role / Device Role / Timing Role: Logic-controlled pass element providing clean enable signaling with fast turn-on/turn-off response. Use Value: VBE(on) ≈ 2.0 V and hFE > 10 k ensure predictable threshold behavior across temperature - avoids erratic rail sequencing during cold/warm starts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN Darlington transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBTA14 | SOT-23 package (vs. TO-92); lower PD = 350 mW; RθJA = 357 °C/W; same hFE and VCES specs. | Surface-mount only; unsuitable for through-hole prototypes or high-temperature ambient environments (>70 °C). | Select MMBTA14 only for space-constrained PCBs where reflow assembly is mandatory and thermal load remains below 150 mW. |
| PZTA14 | SOT-223 package; higher PD = 1 W; RθJA = 125 °C/W; identical electrical characteristics otherwise. | Supports continuous 500 mA loads at elevated ambient temperatures; requires larger footprint and thermal pad layout. | Choose PZTA14 when sustained collector current exceeds 300 mA or ambient temperature exceeds 85 °C - especially in industrial motor control. |
Compared with MMBTA14 and PZTA14, MPSA14_D75Z delivers optimal balance of manufacturability (TO-92 D75Z ammo), thermal capability (625 mW, 200 °C/W), and legacy design compatibility - making it the preferred choice for cost-sensitive, medium-power through-hole switching where layout flexibility and serviceability matter.
Availability
MPSA14_D75Z is available at Aetrix Electronics and suitable for relay driver circuits, lamp/LED array switching, DC motor starter stages, power supply enable functions, and industrial I/O module designs requiring stable component supply and long-term obsolescence management.
Supply support for MPSA14_D75Z 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
ON Semiconductor (formerly Fairchild Semiconductor) is a global leader in energy-efficient semiconductor solutions, specializing in power management, analog, sensor, and discrete devices for automotive, industrial, and cloud infrastructure markets.
The MPSA14_D75Z belongs to ON Semiconductor's general-purpose bipolar transistor product line, engineered specifically for robust, low-cost, high-gain switching in industrial control, appliance, and legacy-compatible designs.
FAQ
What is the pin configuration of MPSA14_D75Z in TO-92 package?
The MPSA14_D75Z uses standard TO-92 pinout: when the flat side faces the viewer and leads point downward, Lead 1 (left) is Emitter, Lead 2 (center) is Collector, and Lead 3 (right) is Base. This matches JEDEC TO-92 outline and is confirmed by Fairchild's packaging documentation for EOL code D75Z (radial ammo, emitter-first orientation).
Does MPSA14_D75Z support 24 V load switching?
Yes - MPSA14_D75Z has VCES = 30 V and VCEO = 30 V, providing 6 V margin above 24 V nominal rails. Its 1.2 A IC rating and ≤1.5 V VCE(sat) ensure reliable switching of typical 24 V relay coils (40–100 mA) and solenoids without secondary protection components.
What is the maximum power dissipation of MPSA14_D75Z at room temperature?
MPSA14_D75Z has a total device dissipation (PD) of 625 mW at TA = 25 °C, with thermal derating of 5.0 mW/°C above that temperature. This value is validated in the Absolute Maximum Ratings table and applies to the TO-92 package variant shipped under D75Z ammo packaging.
Is MPSA14_D75Z RoHS compliant and lead-free?
Yes - MPSA14_D75Z conforms to RoHS Directive 2011/65/EU and is manufactured with lead-free terminations. This is verified through ON Semiconductor's official compliance documentation and material declarations for the MPSA14 family, including all TO-92 packaged variants.
Can MPSA14_D75Z replace MPSA13 in existing designs?
No - MPSA14_D75Z and MPSA13 are not interchangeable. While both are NPN Darlingtons, MPSA13 has VCES = 30 V but lower hFE (min 1,000 vs. 10,000) and higher VCE(sat). Substituting MPSA14_D75Z may cause unintended latch-up or excessive base current in circuits designed for MPSA13's lower gain.
MPSA14_D75Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Transistor Type:
- NPN - Darlington
- Current - Collector (Ic) (Max):
- 1.2 A
- Voltage - Collector Emitter Breakdown (Max):
- 30 V
- Vce Saturation (Max) @ Ib, Ic:
- 1.5V @ 100µA, 100mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 20000 @ 100mA, 5V
- Power - Max:
- 625 mW
- Frequency - Transition:
- 125MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
MPSA14_D75Z FAQ
1.How can I place an order for MPSA14_D75Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPSA14_D75Z 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 MPSA14_D75Z reliable?
The price and inventory of MPSA14_D75Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPSA14_D75Z is usually 5 days.
3.What payment methods are accepted for MPSA14_D75Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPSA14_D75Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPSA14_D75Z?
MPSA14_D75Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPSA14_D75Z 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 MPSA14_D75Z?
For technical support, including MPSA14_D75Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPSA14_D75Z requirements.
6.How does Aetrix verify that MPSA14_D75Z is sourced from the original manufacturer or authorized distributors?
All MPSA14_D75Z 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 MPSA14_D75Z meets industry standards.
7.What is the process for return or replacement of MPSA14_D75Z?
All MPSA14_D75Z units undergo pre-shipment inspection (PSI). If there is an issue with MPSA14_D75Z, 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 MPSA14_D75Z part is unused and in its original packaging.
Return procedure for MPSA14_D75Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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