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Diodes Incorporated AMBTA92Q-7
- Part No.:
- AMBTA92Q-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AMBTA92Q-7.pdf
- Description:
- TRANS PNP 300V 0.5A SOT-23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,380
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Product details
Overview
AMBTA92Q from Diodes Incorporated is a 300V PNP small-signal bipolar junction transistor in SOT23 package, rated for VCEO = −300 V, IC = −500 mA, and PD = 300 mW, with hFE = 25–40 at IC = −1.0 to −30 mA, designed for high-voltage switching and medium-power amplification in automotive power management circuits.
For engineers reviewing the AMBTA92Q datasheet, AMBTA92Q pinout, AMBTA92Q application, or AMBTA92Q equivalent, key selection criteria include its AEC-Q101 qualification, −300 V breakdown rating, SOT23 thermal resistance (RθJA = 417 °C/W), and complementary pairing with MMBTA42Q in high-side switch designs.
Technical Context
This PNP BJT operates in active, saturation, and cutoff regions with guaranteed VCEO and VCBO ratings of −300 V, enabling use in high-voltage collector circuits up to 300 V. Its fT = 50 MHz supports medium-frequency switching up to ~10 MHz in pulse applications.
Designed for automotive-grade reliability, it features ESD HBM = 4,000 V, operates across −55 °C to +150 °C, and is manufactured in IATF 16949-certified facilities with PPAP capability and full RoHS/"Green" compliance (Br+Cl < 1500 ppm, Sb < 1000 ppm).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −300 V: Supports high-side switching in 24 V/48 V automotive systems with ≥10× safety margin over nominal rail. |
| IC | −500 mA: Enables drive of moderate-current loads such as relay coils or LED strings without external buffering. |
| PD | 300 mW: Limits continuous dissipation to ≤300 mW on standard FR-4 PCB with 1 oz copper, requiring derating above 25 °C. |
| hFE | 25–40 @ IC = −1–30 mA: Provides predictable current gain for linear amplification or saturated switching with known base drive requirements. |
| VCE(sat) | ≤ −0.5 V @ IC = −20 mA, IB = −2 mA: Ensures low conduction loss in on-state, critical for efficiency in pulsed power control. |
| fT | 50 MHz: Validates usable bandwidth for PWM frequencies up to ~5–10 MHz in gate driver or signal conditioning stages. |
Pinout & Package
Package: SOT23 - surface-mount plastic package with matte tin-plated leads, moisture sensitivity level 1 (J-STD-020), UL 94V-0 flammability rating, and approximate weight of 0.008 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current source terminal for PNP operation | Connected to higher potential rail; must be biased positive relative to base and collector for forward-active mode. |
| 2 (Base) | Control input for minority-carrier injection | Receives negative current to turn on; requires series resistor to limit IB and ensure saturation under worst-case hFE. |
| 3 (Collector) | Current sink terminal | Connected to load and ground-return path; withstands up to −300 V reverse bias when off. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive temperature cycling, mechanical shock, and humidity testing per stress test standard. |
| VCEO > −300 V | Enables direct replacement of legacy high-voltage transistors in ignition drivers and fuel pump controllers. |
| Complementary NPN pair: MMBTA42Q | Allows matched push-pull or differential amplifier design with consistent thermal and gain tracking. |
| Halogen- and antimony-free "Green" construction | Meets EU Directive 2015/863/EU with Br+Cl < 1500 ppm and Sb < 1000 ppm for eco-compliant end-of-life handling. |
Applications
| Engine Control Unit (ECU) Ignition Driver | Automotive HVAC Blower Motor Control |
|---|---|
Use Scenario: Switching 12–48 V inductive ignition coil loads with fast turn-off and voltage flyback suppression. IC Role / Device Role / Timing Role: High-voltage PNP switch providing current sinking path during spark generation. Use Value: −300 V VCEO withstands inductive kickback spikes exceeding 200 V, reducing need for external clamping diodes. | Use Scenario: Controlling brushed DC blower motor speed via PWM-driven high-side switching. IC Role / Device Role / Timing Role: Medium-power PNP switch operating in saturation to deliver up to 500 mA motor current. Use Value: VCE(sat) ≤ −0.5 V minimizes heat generation at 100% duty cycle, supporting continuous operation in cabin environments. |
| LED Headlamp Power Stage | Body Control Module (BCM) Relay Interface |
Use Scenario: Driving high-brightness LED arrays in adaptive front-lighting systems with overvoltage protection. IC Role / Device Role / Timing Role: Constant-current switch regulating LED string current through emitter-follower configuration. Use Value: hFE stability across −55 °C to +150 °C ensures consistent brightness under extreme ambient conditions. | Use Scenario: Isolating microcontroller GPIO from 12 V relay coil circuits in door lock or window lift modules. IC Role / Device Role / Timing Role: Digital interface transistor translating logic-level signals into relay actuation current. Use Value: ESD HBM = 4,000 V protects against assembly-handling damage, improving first-pass yield in automated BCM assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP high-voltage switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBTA92 | Same die, non-automotive grade: no AEC-Q101 qualification, no PPAP support, wider parametric spread. | Limited to industrial or consumer applications without automotive reliability or traceability requirements. | Select when cost sensitivity outweighs automotive compliance needs and lifecycle assurance. |
| ZTX951 | Higher VCEO = −350 V, larger SOT89 package, RθJA = 150 °C/W, but no AEC-Q101 certification. | Suitable for higher-power analog amplifiers where thermal performance dominates over footprint constraints. | Choose only if board layout allows SOT89 and system does not require automotive change control or IATF 16949 sourcing. |
Compared with MMBTA92 and ZTX951, AMBTA92Q uniquely combines AEC-Q101 qualification, SOT23 footprint, and −300 V rating-making it the only drop-in solution for space-constrained automotive modules requiring production traceability and PPAP documentation.
Availability
AMBTA92Q is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and lighting systems requiring stable component supply with full AEC-Q101 compliance and long-term manufacturing continuity.
Supply support for AMBTA92Q 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and computing markets.
The AMBTA92Q belongs to Diodes' automotive-qualified small-signal transistor product line, engineered specifically for high-voltage switching and amplification in harsh-environment vehicle subsystems.
FAQ
What is the maximum allowable collector-emitter voltage for AMBTA92Q?
The absolute maximum VCEO is −300 V at TA = +25 °C. This rating applies under DC or pulsed conditions with duty cycle ≤2% and pulse width ≤300 µs. Derating is required above 25 °C per the power dissipation curve in Figure 1 of DS40184 Rev. 2–2.
Is AMBTA92Q pin-compatible with MMBTA92?
Yes-AMBTA92Q and MMBTA92 share identical SOT23 pinout (Emitter-Base-Collector on pins 1-2-3), same marking layout (2G2), and identical mechanical dimensions. However, AMBTA92Q adds AEC-Q101 qualification, tighter parametric screening, and IATF 16949 manufacturing controls not present in MMBTA92.
Can AMBTA92Q replace a BC807 in an automotive design?
No-BC807 has VCEO = −45 V and IC = −500 mA, making it unsuitable for 300 V applications. Substituting AMBTA92Q requires verifying PCB creepage/clearance per IPC-2221 for high-voltage spacing, updating base drive calculations for lower hFE, and validating thermal performance with its higher RθJA = 417 °C/W.
Does AMBTA92Q support lead-free reflow soldering?
Yes-AMBTA92Q uses matte tin-plated leads and is qualified for lead-free reflow per JEDEC J-STD-020, with moisture sensitivity level 1. It withstands peak reflow temperatures up to 260 °C for ≤60 seconds and is compatible with standard SnAgCu (SAC305) profiles.
AMBTA92Q-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 500 mA
- Voltage - Collector Emitter Breakdown (Max):
- 300 V
- Vce Saturation (Max) @ Ib, Ic:
- 500mV @ 2mA, 20mA
- Current - Collector Cutoff (Max):
- 250nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 40 @ 10mA, 10V
- Power - Max:
- 300 mW
- Frequency - Transition:
- 50MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
AMBTA92Q-7 FAQ
1.How can I place an order for AMBTA92Q-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AMBTA92Q-7 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 AMBTA92Q-7 reliable?
The price and inventory of AMBTA92Q-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AMBTA92Q-7 is usually 5 days.
3.What payment methods are accepted for AMBTA92Q-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AMBTA92Q-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AMBTA92Q-7?
AMBTA92Q-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AMBTA92Q-7 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 AMBTA92Q-7?
For technical support, including AMBTA92Q-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AMBTA92Q-7 requirements.
6.How does Aetrix verify that AMBTA92Q-7 is sourced from the original manufacturer or authorized distributors?
All AMBTA92Q-7 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 AMBTA92Q-7 meets industry standards.
7.What is the process for return or replacement of AMBTA92Q-7?
All AMBTA92Q-7 units undergo pre-shipment inspection (PSI). If there is an issue with AMBTA92Q-7, 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 AMBTA92Q-7 part is unused and in its original packaging.
Return procedure for AMBTA92Q-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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