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onsemi SPZT751T1G
- Part No.:
- SPZT751T1G
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
SPZT751T1G.pdf
- Description:
- TRANS PNP 60V 2A SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:1,705
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Product details
Overview
SPZT751T1G from onsemi is a PNP silicon epitaxial transistor in SOT-223 package, rated for −60 VCEO, −2.0 AC, and 0.8 W at TA = 25°C, with hFE ≥ 75 at −50 mA and VCE(sat) ≤ −0.3 V at −1.0 A/−100 mA, used in medium-power industrial switching and load control circuits.
For engineers reviewing the SPZT751T1G datasheet, pinout, applications, or equivalent options, key selection criteria include verified PNP polarity, SOT-223 thermal performance (RJA = 156°C/W), −60 V breakdown rating, and confirmed DC current gain behavior across −50 mA to −2.0 A operating range.
Technical Context
This device operates as a medium-power PNP bipolar junction transistor with fixed emitter-base and collector-base junction structures optimized for linear and saturated switching. Its design supports stable DC current gain (hFE ≥ 75 at low-to-moderate current) and low saturation voltage (VCE(sat) ≤ −0.3 V) under forced β = 10 conditions.
Thermal performance is defined by SOT-223 mounting on FR-4 PCB per minimum footprint, delivering 156°C/W junction-to-ambient resistance. It meets Pb-free, RoHS, and AEC-Q101 requirements when ordered with 'S' prefix - though SPZT751T1G itself carries standard industrial qualification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −60 V - Maximum safe collector-emitter voltage before breakdown in common-emitter configuration |
| IC | −2.0 A - Continuous DC collector current capability at TA = 25°C with derating above ambient |
| PD | 0.8 W - Total power dissipation limit on FR-4 board; requires thermal management beyond 25°C |
| hFE | ≥75 @ −50 mA - Confirmed DC current gain ensuring reliable base drive sizing for low-current switching |
| VCE(sat) | ≤ −0.3 V @ −1.0 A/−100 mA - Low saturation loss enabling efficient power-stage conduction |
| fT | 75 MHz - Transition frequency supporting moderate-speed switching up to ~10–20 MHz practical operation |
| RJA | 156 °C/W - Thermal resistance defining junction temperature rise per watt dissipated in free-air mounting |
Pinout & Package
The SPZT751T1G is housed in the SOT-223 (Case 318E, Style 1) surface-mount package with formed leads for thermal stress absorption and visual solder-joint inspection. The package provides enhanced thermal conduction versus smaller SOT-23/SOT-89 variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control terminal; forward-biased with negative voltage relative to emitter to enable conduction |
| 2 & 4 | Collector | High-current output node; electrically connected internally; used for heat sinking via exposed pad |
| 3 | Emitter | Common reference terminal; tied to higher potential in PNP operation; carries full load current |
Key Features
| Feature | Design Value |
|---|---|
| High-current PNP switching | Rated for −2.0 A continuous collector current with validated VCE(sat) performance |
| SOT-223 thermal robustness | Formed leads absorb soldering thermal stress; exposed collector tab improves heat transfer to PCB |
| Industrial reliability | Pb-free, RoHS-compliant construction with 150°C max junction temperature and −65°C to 150°C storage range |
| Complementary NPN pairing | Direct functional complement is PZT651T1G, enabling matched push-pull or H-bridge designs |
Applications
| Motor Drive Stage | Power Supply Control |
|---|---|
Use Scenario: Driving small DC brush motors or solenoid loads in industrial actuators requiring bidirectional or on/off control. IC Role / Device Role / Timing Role: PNP high-side switch controlling current flow from supply rail to load. Use Value: −60 VCEO and −2.0 A rating support 24 V/1 A motor loads with margin; low VCE(sat) minimizes conduction loss. | Use Scenario: Regulating output voltage in linear or hybrid switching regulators using discrete pass element control. IC Role / Device Role / Timing Role: Medium-power PNP pass transistor in series-regulator topology. Use Value: Stable hFE ≥ 75 ensures predictable base drive; SOT-223 thermal path sustains 0.8 W dissipation without heatsink. |
| Industrial I/O Module | LED Driver Circuit |
Use Scenario: Providing isolated 24 V digital output channels for PLC or sensor interface modules. IC Role / Device Role / Timing Role: Switching transistor interfacing microcontroller GPIO to external 24 V field devices. Use Value: −5.0 VEBO and −80 VCBO ensure immunity to back-EMF transients; SOT-223 allows visual solder inspection for field-reliability compliance. | Use Scenario: Constant-current sinking driver for high-brightness LED strings in signage or panel lighting. IC Role / Device Role / Timing Role: PNP-controlled current sink regulating LED current via emitter resistor feedback. Use Value: Precise VBE(on) = −1.0 V enables accurate current setting; fT = 75 MHz supports PWM dimming up to 20 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP medium-power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MJD2955T4G | Higher VCEO (−70 V), higher IC (−12 A), TO-220 package; RJA = 1.5°C/W with heatsink | Requires heatsink and through-hole assembly; unsuitable for space-constrained SMT layouts | Select when >2 A current or >60 V margin required and board real estate allows TO-220 |
| MMBT4403LT1G | Lower power: −40 VCEO, −0.6 AC, SOT-23 package; RJA = 300°C/W | Limited to <500 mA loads; inadequate for 1–2 A industrial switching | Select only for low-current signal-level inversion or biasing where SOT-23 footprint is mandatory |
Compared with MJD2955T4G and MMBT4403LT1G, SPZT751T1G uniquely balances SMT compatibility, 2 A capability, and −60 V rating in SOT-223 - offering optimal thermal performance per mm² among medium-power PNP transistors without requiring heatsinks or sacrificing manufacturability.
Availability
SPZT751T1G is available at Aetrix Electronics and suitable for industrial motor drives, programmable logic controller (PLC) output stages, and 24 V DC power supply regulation requiring stable component supply and long-term production continuity.
Supply support for SPZT751T1G 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 PZT751 series belongs to onsemi's general-purpose bipolar transistor product line, engineered specifically for cost-sensitive, medium-power switching and amplification tasks in industrial and consumer equipment.
FAQ
What is the maximum collector-emitter voltage rating for SPZT751T1G?
The SPZT751T1G has a guaranteed minimum V(BR)CEO of −60 Vdc at IC = −10 mA and IB = 0. This rating defines the absolute maximum reverse-biased voltage the transistor can withstand between collector and emitter before breakdown occurs. Exceeding this value risks permanent damage. The SPZT751T1G must be operated within this limit in all circuit configurations, including transient conditions.
Is SPZT751T1G pin-compatible with its NPN complement PZT651T1G?
No, SPZT751T1G and PZT651T1G are not pin-compatible. While both use the SOT-223 package, their internal pin assignments differ: SPZT751T1G assigns Base to Pin 1, Collector to Pins 2 & 4, and Emitter to Pin 3; PZT651T1G uses Base on Pin 1, Emitter on Pins 2 & 4, and Collector on Pin 3. Direct substitution without PCB revision will result in incorrect biasing and circuit failure. The SPZT751T1G must be placed according to its specific pinout.
Does SPZT751T1G meet AEC-Q101 automotive qualification?
The SPZT751T1G is not AEC-Q101 qualified. Only versions with an 'S' prefix (e.g., SPZT751T1G is *not* the automotive variant) are specified for automotive use and PPAP capable. The SPZT751T1G carries standard industrial qualification and is intended for commercial and industrial applications. For automotive-grade deployment, the S-prefix variant must be sourced and validated separately.
What is the typical DC current gain (hFE) of SPZT751T1G at 1 A collector current?
At IC = −1.0 A and VCE = −2.0 Vdc, the SPZT751T1G exhibits a minimum hFE of 75 per datasheet specifications. This value is confirmed under DC test conditions and reflects usable current amplification for base drive calculation. The SPZT751T1G maintains this gain level across temperature ranges from −55°C to 125°C, as shown in Figure 1 of the official datasheet.
Can SPZT751T1G be used in linear amplifier applications?
Yes, SPZT751T1G supports linear operation within its Safe Operating Area (SOA), as defined in Figure 4 of the datasheet. With VCE ≤ −20 V and IC ≤ −500 mA at DC, the SPZT751T1G remains within thermal and second-breakdown limits. However, due to its primary optimization for switching, designers should verify stability, distortion, and thermal rise in actual amplifier implementations - the SPZT751T1G is not characterized for audio-grade linearity or noise performance.
SPZT751T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 2 A
- Voltage - Collector Emitter Breakdown (Max):
- 60 V
- Vce Saturation (Max) @ Ib, Ic:
- 500mV @ 200mA, 2A
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 75 @ 1A, 2V
- Power - Max:
- 800 mW
- Frequency - Transition:
- 75MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223 (TO-261)
SPZT751T1G FAQ
1.How can I place an order for SPZT751T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SPZT751T1G 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 SPZT751T1G reliable?
The price and inventory of SPZT751T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SPZT751T1G is usually 5 days.
3.What payment methods are accepted for SPZT751T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SPZT751T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SPZT751T1G?
SPZT751T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SPZT751T1G 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 SPZT751T1G?
For technical support, including SPZT751T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SPZT751T1G requirements.
6.How does Aetrix verify that SPZT751T1G is sourced from the original manufacturer or authorized distributors?
All SPZT751T1G 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 SPZT751T1G meets industry standards.
7.What is the process for return or replacement of SPZT751T1G?
All SPZT751T1G units undergo pre-shipment inspection (PSI). If there is an issue with SPZT751T1G, 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 SPZT751T1G part is unused and in its original packaging.
Return procedure for SPZT751T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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