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Nexperia USA Inc. BSR30-QX
- Part No.:
- BSR30-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
BSR30-QX.pdf
- Description:
- TRANS PNP 60V 1A SOT-89
- Quantity:
- Payment:
- Shipping:
Inventory:8,930
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Product details
Overview
BSR30-QX from Nexperia is a PNP medium power transistor in SOT89 package, rated for −60 V VCEO, −1 A continuous collector current, and 1.35 W total power dissipation at Tamb ≤ 25 °C. It serves as a high-side switch or linear regulator pass device in automotive-grade battery-driven systems, with exposed heatsink for thermal management and AEC-Q101 qualification.
For engineers reviewing the BSR30-QX datasheet, BSR30-QX pinout, BSR30-QX application, or BSR30-QX equivalent, key selection criteria include its −60 V breakdown rating, DC current gain (hFE = 40–120 @ −100 mA), low VCE(sat) (−0.25 V @ −150 mA/−15 mA), thermal resistance to solder point (13 K/W), and SOT89 mechanical compatibility with FR4 PCBs.
Technical Context
This discrete PNP bipolar junction transistor operates in linear or saturated switching modes, with base-emitter and collector-emitter junctions optimized for stable DC gain across −50 °C to +150 °C ambient range. Its exposed collector tab enables direct thermal coupling to PCB copper, supporting sustained operation up to 150 °C junction temperature.
The device meets AEC-Q101 stress test requirements for automotive use, including HTGB, HTRB, and temperature cycling. Its fT of 100 MHz at −10 V VCE, −50 mA IC confirms suitability for moderate-frequency amplifier and driver applications-not RF or digital logic switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −60 V: Maximum safe collector-emitter voltage with base open; defines high-side switch blocking capability in 48 V automotive systems. |
| IC | −1 A continuous: Rated DC collector current; supports load switching up to ~12 W at 12 V with adequate heatsinking. |
| hFE | 40–120 @ −100 mA: DC current gain range at VCE = −5 V; determines required base drive for saturation in linear regulators. |
| VCE(sat) | −0.25 V @ −150 mA/−15 mA: Low saturation voltage reduces conduction loss and self-heating in high-side switch configurations. |
| Rth(j-sp) | 13 K/W: Junction-to-solder-point thermal resistance; enables predictable thermal design when mounted on 6 cm² tin-plated copper pad. |
| fT | 100 MHz @ −10 V, −50 mA: Transition frequency confirming usable bandwidth for audio amplifiers and MOSFET gate drivers. |
| Ptot | 1.35 W @ Tamb ≤ 25 °C: Total power dissipation limit; requires derating above 25 °C ambient per Rth(j-a) = 93 K/W. |
Pinout & Package
SOT89 plastic surface-mount package (4.5 mm × 2.5 mm × 1.5 mm body, 1.5 mm lead pitch) with exposed collector tab for thermal and electrical connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter | Current exit terminal; connected to system ground or low-side reference in high-side switch topology. |
| 2 | Collector | Main current path terminal; electrically and thermally tied to exposed metal tab for PCB heat sinking. |
| 3 | Base | Control input; requires current-limited drive (≤200 mA peak) to achieve full saturation under load. |
Key Features
| Feature | Design Value |
|---|---|
| Exposed collector tab | Direct thermal interface to PCB copper improves steady-state thermal performance by >70% vs. standard SOT-23. |
| AEC-Q101 qualification | Validated for automotive underhood environments including temperature cycling, humidity bias, and high-temperature gate bias. |
| High power dissipation | 1.35 W rating at 25 °C ambient enables single-device operation in 5–12 V linear regulators without external heatsink. |
| Wide operating temperature | −65 °C to +150 °C storage and operating range supports engine control units and battery management modules. |
| Low VBE(sat) | −1.2 V @ −500 mA/−50 mA ensures efficient base drive sourcing from standard 3.3 V or 5 V microcontrollers. |
Applications
| Linear Voltage Regulators | High-Side Switches |
|---|---|
|
Use Scenario: Adjustable 3.3 V/5 V output regulator using LM317-style topology with PNP pass transistor. IC Role / Device Role / Timing Role: Pass element controlling output voltage via emitter-follower configuration; base driven by error amplifier. Use Value: Low VCE(sat) minimizes dropout voltage; exposed tab maintains <100 °C junction temp at 500 mA load. |
Use Scenario: 12 V battery-powered load enable circuit for infotainment module power rail. IC Role / Device Role / Timing Role: High-side switch isolating downstream circuitry; base driven by MCU GPIO through current-limiting resistor. Use Value: −60 V VCEO withstands load dump transients; AEC-Q101 qualification ensures reliability in vehicle power systems. |
| Battery-Driven Devices | MOSFET Drivers |
|
Use Scenario: Power sequencing controller in portable diagnostic tool with Li-ion battery input (3.0–4.2 V). IC Role / Device Role / Timing Role: Reverse-polarity protection and enable switch upstream of DC-DC converter. Use Value: −5 V VEBO rating prevents emitter-base breakdown during hot-swap events; compact SOT89 footprint saves board space. |
Use Scenario: Level-shifting driver stage for N-channel high-side MOSFET in BLDC motor gate driver. IC Role / Device Role / Timing Role: Current amplifier boosting microcontroller output to deliver ≥50 mA gate charge pulse. Use Value: 100 MHz fT supports clean 20–50 kHz PWM edge transitions; low VCE(sat) reduces driver-stage conduction loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP medium power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC807-40,115 | Lower VCEO (−45 V), lower IC (−500 mA), SOT23 package, no exposed tab. | Not qualified to AEC-Q101; unsuitable for automotive underhood use or >45 V systems. | Select only for cost-sensitive consumer applications below 36 V with minimal thermal demand. |
| MMBT3906LT1G | Same VCEO (−40 V), lower IC (−200 mA), SOT23, no thermal tab, hFE 100–300 but lower power rating. | Limited to signal-level switching; cannot replace BSR30-QX in >200 mA load or linear regulator roles. | Use only for low-current biasing or logic inversion where thermal performance is non-critical. |
Compared with BC807-40 and MMBT3906LT1G, BSR30-QX delivers higher voltage margin, 2× continuous current, integrated thermal path, and automotive qualification-making it the sole choice for robust high-side switching in 12–48 V automotive subsystems.
Availability
BSR30-QX is available at Aetrix Electronics and suitable for linear voltage regulators, high-side switches, and battery-driven devices requiring stable component supply and long-term automotive-grade availability.
Supply support for BSR30-QX 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
Nexperia is a global semiconductor expert focused on essential semiconductors, delivering high-performance, reliable components for automotive, industrial, and consumer markets.
BSR30-QX belongs to Nexperia's AEC-Q101-qualified discrete transistor portfolio, engineered specifically for high-reliability power control in automotive power management and battery interface applications.
FAQ
What is the maximum allowable junction temperature for BSR30-QX?
The absolute maximum junction temperature is 150 °C, as specified in Table 5 (Limiting values). Operation at this temperature requires strict thermal design: Rth(j-a) = 93 K/W implies ambient must be ≤25 °C at full 1.35 W dissipation unless additional heatsinking is applied. Derating curves in the datasheet define safe operating area above 25 °C ambient.
Can BSR30-QX be used in a low-dropout linear regulator configuration?
Yes-its −0.25 V VCE(sat) at −150 mA/−15 mA enables dropout voltages under 0.3 V in emitter-follower LDO topologies. However, due to PNP architecture, output voltage is always ~0.7 V below input; true LDO behavior requires complementary NPN/PNP pairs or dedicated ICs for sub-0.1 V dropout.
Is the SOT89 package lead-free and RoHS compliant?
Yes-BSR30-QX is manufactured using lead-free solderable terminations and complies with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. The package outline drawing (Fig. 1) and ordering information confirm SnAgCu plating and halogen-free molding compound.
How does the exposed collector tab affect PCB layout?
The tab (Pin 2) must be connected to a minimum 6 cm² tin-plated copper area on the top layer for optimal thermal performance (Rth(j-sp) = 13 K/W). Avoid thermal reliefs or narrow traces; use multiple vias to inner-layer ground planes if internal copper is used. Solder mask should fully expose the tab area per Fig. 2 reflow footprint.
BSR30-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 1 A
- Voltage - Collector Emitter Breakdown (Max):
- 60 V
- Vce Saturation (Max) @ Ib, Ic:
- 500mV @ 50mA, 500mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 40 @ 100mA, 5V
- Power - Max:
- 1.35 W
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89
BSR30-QX FAQ
1.How can I place an order for BSR30-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BSR30-QX 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 BSR30-QX reliable?
The price and inventory of BSR30-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BSR30-QX is usually 5 days.
3.What payment methods are accepted for BSR30-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BSR30-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BSR30-QX?
BSR30-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BSR30-QX 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 BSR30-QX?
For technical support, including BSR30-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BSR30-QX requirements.
6.How does Aetrix verify that BSR30-QX is sourced from the original manufacturer or authorized distributors?
All BSR30-QX 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 BSR30-QX meets industry standards.
7.What is the process for return or replacement of BSR30-QX?
All BSR30-QX units undergo pre-shipment inspection (PSI). If there is an issue with BSR30-QX, 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 BSR30-QX part is unused and in its original packaging.
Return procedure for BSR30-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BSR30-QX Tags
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