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Diodes Incorporated 2DB1694-7
- Part No.:
- 2DB1694-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
2DB1694-7.pdf
- Description:
- TRANS PNP 30V 1A SOT-323
- Quantity:
- Payment:
- Shipping:
Inventory:2,528
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Product details
Overview
2DB1694-7 from Diodes Incorporated is a low VCE(SAT) PNP bipolar junction transistor in SOT-323 package, rated for -30 V VCEO, -1 A continuous IC, 300 mW power dissipation (FR-4, min pad), hFE = 270–680 at -100 mA, and fT = 300 MHz - used in compact low-power switching and amplification circuits such as LED drivers and signal-level logic interfaces.
For engineers reviewing the 2DB1694-7 datasheet, 2DB1694-7 pinout, 2DB1694-7 application, or 2DB1694-7 equivalent, key selection criteria include verified PNP polarity, SOT-323 thermal performance under pulsed conditions, VCE(SAT) ≤ -380 mV at -500 mA/-25 mA drive, and compatibility with lead-free reflow profiles per J-STD-020D Level 1.
Technical Context
This PNP transistor employs epitaxial planar die construction to achieve low saturation voltage and stable DC current gain across temperature. Its -30 V VCEO and -6 V VEBO support operation in low-voltage rail-referenced switching nodes, while fT = 300 MHz enables use in audio-frequency amplification and fast digital switching up to ~10 MHz.
Thermal design relies on two defined mounting conditions: RθJA = 417 °C/W (minimum pad) and 250 °C/W (1 in² copper pad), with guaranteed operation from -55 °C to +150 °C. Saturation characteristics are specified under pulsed conditions (300 µs, ≤2% duty cycle) to avoid self-heating artifacts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -30 V - Maximum safe collector-emitter reverse bias before breakdown in common-emitter configuration |
| IC (cont.) | -1 A - Continuous collector current rating defining maximum steady-state switching load capability |
| VCE(SAT) | -180 to -380 mV - Verified saturation voltage range at -500 mA IC/-25 mA IB, critical for low-loss switching |
| hFE | 270–680 - DC current gain at -2 V VCE, -100 mA IC, enabling predictable base drive sizing |
| fT | 300 MHz - Unity-gain frequency confirming usable bandwidth for audio and medium-speed digital signals |
| RθJA | 417 °C/W - Junction-to-ambient thermal resistance on standard FR-4 PCB, defining max power vs. ambient temperature |
| Package | SOT-323 - Ultra-small surface-mount outline (2.1 mm × 1.3 mm × 0.9 mm), compatible with high-density PCB layouts |
Pinout & Package
SOT-323 plastic package with matte tin-plated Alloy 42 leadframe; moisture sensitivity level 1 per J-STD-020D; weight ≈ 0.006 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Emitter (E) | Current source terminal for PNP operation | Connected to higher potential rail; carries full load current in switching applications |
| Base (B) | Control input for minority-carrier injection | Requires negative current relative to emitter to turn on; typical drive IB = IC/20 |
| Collector (C) | Current sink terminal | Connected to load and ground reference; voltage swing limited to -30 V max |
Key Features
| Feature | Design Value |
|---|---|
| Low VCE(SAT) | ≤ -380 mV at -500 mA ensures < 0.2 W conduction loss in 1 A switching paths |
| Epitaxial planar die | Enables tight parameter distribution and stable hFE over temperature (-55 °C to +150 °C) |
| SOT-323 footprint | 0.9 mm height and 2.1 mm × 1.3 mm area support ultra-compact portable and wearable PCB designs |
| RoHS-compliant & "Green" | No purposefully added lead; UL 94V-0 mold compound meets environmental compliance for global markets |
Applications
| LED Driver Circuit | Level-Shifting Interface |
|---|---|
Use Scenario: Driving 20–100 mA indicator LEDs from 3.3 V or 5 V microcontroller GPIO pins. IC Role / Device Role / Timing Role: PNP switch sinking current from LED anode to VCC, enabling active-high control logic. Use Value: VCE(SAT) ≤ -380 mV minimizes voltage drop and heat generation at 100 mA, preserving LED forward voltage margin. | Use Scenario: Translating 1.8 V logic outputs to 3.3 V or 5 V domains in mixed-voltage systems. IC Role / Device Role / Timing Role: Active-pull-up level shifter using emitter-follower configuration with resistor biasing. Use Value: fT = 300 MHz supports clean edge transitions up to 10 Mbps without distortion. |
| Low-Power Audio Amplifier | Power Rail Sequencing Switch |
Use Scenario: Class-A preamplifier stage for microphone or sensor signal conditioning in battery-powered devices. IC Role / Device Role / Timing Role: Common-emitter amplifier with fixed bias, delivering gain >200 at 1 kHz. Use Value: hFE = 270–680 ensures stable bias point across production lots and temperature extremes. | Use Scenario: Enabling/disabling auxiliary 3.3 V or 5 V rails during system power-up or fault recovery. IC Role / Device Role / Timing Role: High-side switch controlling VOUT with base driven by enable signal referenced to VIN. Use Value: -30 V VCEO and -30 V VCBO provide 10 V margin above typical 24 V industrial supply rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP low-saturation transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZUMT720 | Direct replacement per Diodes' obsolescence notice; same SOT-323, -30 V VCEO, but hFE min = 250 and VCE(SAT) max = -300 mV @ -500 mA | Identical pinout and footprint; optimized for lower saturation voltage in high-efficiency switching | Select ZUMT720 when tighter VCE(SAT) tolerance and updated process consistency are required |
| MMBT3906 | Same SOT-23 package (not SOT-323); -40 V VCEO, -200 mA IC, VCE(SAT) = -400 mV @ -10 mA - lower current and larger footprint | Not drop-in; requires PCB redesign; suited for lower-current general-purpose switching | Choose MMBT3906 only if board space allows SOT-23 and load current remains below 200 mA |
Compared with ZUMT720, 2DB1694-7 offers broader hFE range but higher VCE(SAT); versus MMBT3906, it delivers 5× higher current rating in a smaller footprint but lacks legacy stock availability.
Availability
2DB1694-7 is available at Aetrix Electronics and suitable for LED driver circuits, level-shifting interfaces, low-power audio amplifiers, and power rail sequencing switches requiring stable component supply despite its obsolete status.
Supply support for 2DB1694-7 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 industrial, computing, and consumer applications.
The 2DB1694-7 belongs to Diodes' legacy SOT-323 PNP transistor product line, designed specifically for space-constrained, low-power switching and amplification where thermal efficiency and RoHS compliance are mandatory.
FAQ
Is 2DB1694-7 still in production?
No - Diodes Incorporated officially discontinued 2DB1694-7 and recommends ZUMT720 as its direct replacement. Aetrix Electronics maintains limited legacy stock with full traceability and provides engineering support for transition planning to ZUMT720 or other qualified alternatives.
What is the correct pinout orientation for 2DB1694-7 in SOT-323?
Top view (marking side up): left pin = Emitter (E), center pin = Base (B), right pin = Collector (C). This matches the schematic diagram on page 2 of DS31640 Rev. 3–4 and is consistent with standard SOT-323 PNP marking conventions.
Can 2DB1694-7 be used in place of an NPN transistor like 2DD2656?
No - 2DB1694-7 is a PNP device and 2DD2656 is its complementary NPN counterpart; they are not interchangeable. Swapping polarity without circuit redesign causes inversion of logic states and potential latch-up or damage due to incorrect biasing.
What is the maximum allowable soldering temperature profile for 2DB1694-7?
As a Level 1 moisture-sensitive device per J-STD-020D, 2DB1694-7 supports standard lead-free reflow with peak temperature ≤ 260 °C, ramp rate ≤ 3 °C/s, and time above 217 °C ≤ 60 seconds - no baking required prior to assembly.
2DB1694-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 1 A
- Voltage - Collector Emitter Breakdown (Max):
- 30 V
- Vce Saturation (Max) @ Ib, Ic:
- 380mV @ 25mA, 500mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 270 @ 100mA, 2V
- Power - Max:
- 300 mW
- Frequency - Transition:
- 300MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
2DB1694-7 FAQ
1.How can I place an order for 2DB1694-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 2DB1694-7 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 2DB1694-7 reliable?
The price and inventory of 2DB1694-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2DB1694-7 is usually 5 days.
3.What payment methods are accepted for 2DB1694-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2DB1694-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2DB1694-7?
2DB1694-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2DB1694-7 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 2DB1694-7?
For technical support, including 2DB1694-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2DB1694-7 requirements.
6.How does Aetrix verify that 2DB1694-7 is sourced from the original manufacturer or authorized distributors?
All 2DB1694-7 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 2DB1694-7 meets industry standards.
7.What is the process for return or replacement of 2DB1694-7?
All 2DB1694-7 units undergo pre-shipment inspection (PSI). If there is an issue with 2DB1694-7, 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 2DB1694-7 part is unused and in its original packaging.
Return procedure for 2DB1694-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
2DB1694-7 Tags
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