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Diodes Incorporated DDTB142JC-7-F
- Part No.:
- DDTB142JC-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDTB142JC-7-F.pdf
- Description:
- TRANS PREBIAS PNP 50V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,915
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Product details
Overview
DDTB142JC-7-F from Diodes Incorporated is a PNP pre-biased transistor in SOT-23 package, featuring integrated 470Ω and 10kΩ bias resistors (R1/R2), −500mA continuous collector current, −50V VCBO, and −40V VCEO. It operates across −55°C to +150°C and is used in automotive signal switching, level translation, and discrete logic interface circuits where space-constrained biasing is required.
For engineers reviewing the DDTB142JC-7-F datasheet, DDTB142JC-7-F pinout, DDTB142JC-7-F application, or DDTB142JC-7-F equivalent, key selection criteria include verified R1/R2 resistor values, guaranteed VCE(sat) ≤ −0.3V at −50mA/−2.5mA, hFE range of 100–600, thermal resistance of 625°C/W on FR4, and AEC-Q101 qualification status for automotive use cases.
Technical Context
This device integrates base-emitter and base-collector bias resistors to eliminate external components in simple switching configurations. Its PNP topology enables high-side load control with TTL/CMOS-compatible input thresholds (VI(ON) = −2.0V, VI(OFF) = −0.3V) and fast turn-off via internal R2 pull-down.
Designed for DC-coupled digital interface and low-frequency switching (fT = 200MHz), it supports stable operation under pulsed loads up to −500mA with VCE(sat) tightly specified at −0.3V and GL = 56 at −50mA/−2.5mA drive conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −40V - Maximum safe collector-emitter voltage before breakdown under open-base condition |
| IC | −500mA - Continuous DC collector current rating defining maximum load drive capability |
| VCE(sat) | −0.3V @ IC = −50mA, IB = −2.5mA - Low saturation voltage enabling minimal power loss in switching mode |
| R1 / R2 | 470Ω / 10kΩ - Integrated base bias network eliminating two external resistors and reducing PCB footprint |
| hFE | 100–600 @ IC = −5mA, VCE = −5V - Guaranteed DC current gain range supporting reliable digital on/off control |
| PD | 200mW - Power dissipation limit on standard FR4 board, requiring thermal derating above +25°C ambient |
| RθJA | 625°C/W - Junction-to-ambient thermal resistance confirming need for layout-aware copper pour in high-duty-cycle apps |
Pinout & Package
Package: SOT-23 - Surface-mount plastic package (2.30–2.50mm length, 1.20–1.40mm width, 0.37–0.51mm height), UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | E | Current sink terminal; connected internally to R2 and external load return path |
| 2 (Base) | B | Control node tied to R1 (470Ω) and R2 (10kΩ); accepts −2.0V logic-high to activate |
| 3 (Collector) | C | High-side output node; connects to supply rail and switched load anode |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | 470Ω (R1) + 10kΩ (R2) eliminates two external resistors and reduces layout complexity |
| Automotive-grade construction | Manufactured in IATF 16949-certified facilities; supports PPAP documentation upon request |
| Green compliance | Halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb); fully RoHS 3 compliant |
| Thermal robustness | Rated for −55°C to +150°C operation with validated derating curve up to 150°C ambient |
Applications
| Automotive Door Module Switching | Industrial PLC Input Interface |
|---|---|
|
Use Scenario: Controlling 12V solenoid activation in door lock/unlock circuits using microcontroller GPIO. IC Role / Device Role / Timing Role: PNP pre-biased switch providing high-side drive with logic-level compatible input threshold (−2.0V). Use Value: Eliminates discrete base resistor network, reduces BOM count by two parts, and ensures consistent turn-on behavior across temperature. |
Use Scenario: Converting 24V industrial field signals to 3.3V/5V logic levels for FPGA or MCU inputs. IC Role / Device Role / Timing Role: Level-shifting active-low interface with built-in pull-down (R2) for noise-immune idle state. Use Value: Guarantees VI(OFF) ≤ −0.3V at −50µA leakage, preventing false triggering in electrically noisy factory environments. |
| Consumer Appliance Motor Control | Medical Diagnostic Equipment Signal Conditioning |
|
Use Scenario: Driving small brushed DC motors in smart home appliances using PWM from low-voltage controllers. IC Role / Device Role / Timing Role: Low-saturation PNP switch handling repetitive −500mA pulses with VCE(sat) ≤ −0.3V. Use Value: Limits conduction loss to ≤15mW per pulse cycle, minimizing self-heating in sealed enclosures without forced airflow. |
Use Scenario: Isolating analog sensor outputs from digital control logic in portable diagnostic devices. IC Role / Device Role / Timing Role: Discrete buffer stage with hFE ≥100 ensuring stable current transfer under varying load capacitance. Use Value: Maintains signal integrity over full −55°C to +150°C medical operating range without gain drift-induced offset errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP pre-biased transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DDTB142TC-7-F | Same die, but R2 = open (no emitter pull-down resistor); higher VI(OFF) (−0.3V vs. −0.3V same), no guaranteed turn-off path | Suitable only where external pull-down is acceptable; less robust in floating-input scenarios | Select when board layout allows dedicated R2 placement and cost-per-resistor is lower than part premium |
| NSV142JCT1G | PNP pre-biased (470Ω/10kΩ), AEC-Q101 qualified, identical SOT-23 pinout, but VCEO = −30V (vs. −40V) and IC = −400mA (vs. −500mA) | Valid for 12V automotive systems but not 24V/48V industrial rails requiring higher breakdown margin | Prefer for new AEC-Q101-compliant designs where −30V/−400mA suffices and supply chain diversification is needed |
Compared with DDTB142JC-7-F, DDTB142TC-7-F lacks internal R2 and requires external biasing, while NSV142JCT1G offers automotive qualification but trades off 10V VCEO headroom and 100mA current capacity-critical for 24V industrial switching reliability.
Availability
DDTB142JC-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and consumer appliance motor drivers requiring stable component supply and long-term obsolescence management support.
Supply support for DDTB142JC-7-F 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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
This part belongs to the DDTB (LO-R1) C series of pre-biased transistors designed specifically for space-constrained, high-reliability DC switching in automotive and industrial control systems.
FAQ
Is DDTB142JC-7-F still in active production?
No-Diodes Incorporated has marked DDTB142JC-7-F as obsolete per DS30403 Rev. 7 (June 2021). Aetrix Electronics maintains limited legacy stock and supports last-time-buy programs with full traceability and extended warranty for qualifying industrial and automotive customers.
What is the exact marking code on the top of the SOT-23 package?
The top-side marking is "P76", corresponding to DDTB142JC per the datasheet Table on Page 1. This code is laser-etched on the package and verified under 20x magnification; no date code or additional characters appear on functional units.
Can DDTB142JC-7-F replace a standard PNP transistor like MMBT2907A?
Yes-but only in non-critical biasing configurations. Unlike MMBT2907A, DDTB142JC-7-F includes fixed 470Ω/10kΩ resistors, so it cannot replicate arbitrary base drive conditions. It replaces discrete BJT+resistor combinations-not bare transistors requiring external bias tuning.
Does this part meet AEC-Q101 stress test requirements?
Diodes states that AEC-Q101 qualification is available for automotive-grade variants upon request and PPAP submission. The DDTB142JC-7-F itself is not pre-certified; however, its die and assembly process originate from IATF 16949-certified facilities, enabling qualification support for customer-specific automotive programs.
DDTB142JC-7-F 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:
- Obsolete
- Transistor Type:
- PNP - Pre-Biased
- Current - Collector (Ic) (Max):
- 500 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 470 Ohms
- Resistor - Emitter Base (R2):
- 10 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 56 @ 50mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 2.5mA, 50mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 200 MHz
- Power - Max:
- 200 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DDTB142JC-7-F FAQ
1.How can I place an order for DDTB142JC-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTB142JC-7-F 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 DDTB142JC-7-F reliable?
The price and inventory of DDTB142JC-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTB142JC-7-F is usually 5 days.
3.What payment methods are accepted for DDTB142JC-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTB142JC-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTB142JC-7-F?
DDTB142JC-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTB142JC-7-F 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 DDTB142JC-7-F?
For technical support, including DDTB142JC-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTB142JC-7-F requirements.
6.How does Aetrix verify that DDTB142JC-7-F is sourced from the original manufacturer or authorized distributors?
All DDTB142JC-7-F 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 DDTB142JC-7-F meets industry standards.
7.What is the process for return or replacement of DDTB142JC-7-F?
All DDTB142JC-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTB142JC-7-F, 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 DDTB142JC-7-F part is unused and in its original packaging.
Return procedure for DDTB142JC-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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