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Diodes Incorporated DSS4160TQ-7
- Part No.:
- DSS4160TQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DSS4160TQ-7.pdf
- Description:
- TRANS NPN 60V 1A SOT-23-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,244
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Product details
Overview
DSS4160TQ-7 from Diodes Incorporated is a 60V NPN low-saturation transistor in SOT23 package, designed for high-reliability automotive switching applications. It delivers 1A continuous collector current, 280mV VCE(sat) at 1A, 280mΩ equivalent on-resistance, and AEC-Q101 qualification - enabling robust load switching in engine control units and body electronics.
For engineers reviewing the DSS4160TQ-7 datasheet, DSS4160TQ-7 pinout, DSS4160TQ-7 application, or DSS4160TQ-7 equivalent, key selection criteria include its 60V VCEO, 1A IC, low 280mV saturation voltage, AEC-Q101 qualification, and SOT23 thermal performance with RθJA = 172°C/W.
Technical Context
This NPN bipolar junction transistor operates as a high-current, low-VCE(sat) switch in DC-coupled power paths. Its hFE of 100 at 1A/5V supports stable base-driven operation, while fT = 150MHz enables fast switching in PWM-controlled loads up to ~100kHz.
Thermally, it sustains 725mW at TA = 25°C on 15mm × 15mm 1oz copper, with derating to zero at 150°C ambient. ESD ratings (4kV HBM, 400V MM) meet automotive board-level robustness requirements without external protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 60V - Supports 48V automotive systems with 20% margin against transients. |
| IC (continuous) | 1A - Drives solenoids, relays, or LED arrays directly without heatsinking. |
| VCE(sat) | 280mV @ 1A/100mA - Minimizes conduction loss (0.28W) and self-heating in sustained ON-state. |
| RCE(sat) | 280mΩ - Enables accurate current-sense resistor placement in emitter path. |
| hFE | 100 @ 1A - Allows simple fixed-base-drive design with ≤100mA IB requirement. |
| fT | 150MHz - Ensures <1µs turn-on/off timing for PWM dimming and motor commutation. |
| RθJA | 172°C/W - Requires minimal PCB copper area for thermal management in space-constrained modules. |
Pinout & Package
Package: SOT23 - Surface-mount plastic package with matte tin-plated leads, moisture sensitivity level 1, UL 94V-0 rated molding compound, weight ≈ 0.008g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current return path | Connected to ground or low-side return; used for current sensing when placed in emitter leg. |
| 2 (Base) | Control input | Driven by microcontroller GPIO or driver IC; requires ≥100mA peak for full saturation at 1A IC. |
| 3 (Collector) | High-side load connection | Switches 60V-tolerant loads; soldered to thermal pad on PCB for heat dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood environments (-40°C to +125°C case, -55°C to +150°C junction). |
| Low VCE(sat) (280mV @ 1A) | Reduces power loss by >40% vs. standard general-purpose transistors at same current. |
| 280mΩ RCE(sat) | Enables precise current limiting via small-value emitter resistors without significant voltage drop. |
| 4kV HBM ESD rating | Eliminates need for external ESD protection diodes in typical automotive PCB layouts. |
| SOT23 footprint compatibility | Direct replacement for legacy SOT23 NPN switches (e.g., MMBT4401, DXTN07100) with improved saturation. |
Applications
| Engine Control Unit (ECU) Injector Driver | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Switching 12V fuel injector coils with 1–2ms pulse width and 1A peak current. IC Role / Device Role / Timing Role: Low-loss NPN switch replacing mechanical relay; provides precise current control during injection event. Use Value: 280mV VCE(sat) limits coil drive loss to 280mW, reducing thermal stress on PCB traces and improving pulse fidelity. |
Use Scenario: Controlling interior lighting, door locks, and window lift motors in 12V vehicle architecture. IC Role / Device Role / Timing Role: High-reliability load switch interfacing MCU GPIO to inductive/resistive loads. Use Value: AEC-Q101 qualification ensures 15-year field reliability; 60V VCEO withstands load-dump transients per ISO 7637-2. |
| LED Headlamp Dimming Circuit | Start-Stop System Solenoid Interface |
Use Scenario: PWM dimming of high-brightness LED strings in adaptive front-lighting systems (AFS). IC Role / Device Role / Timing Role: Fast-switching NPN transistor operating at 1–10kHz PWM frequency with minimal dead-time distortion. Use Value: 150MHz fT and 63ns ton ensure clean duty-cycle reproduction and reduced thermal cycling in LEDs. |
Use Scenario: Driving 12V starter solenoid engagement coil during engine restart in micro-hybrid vehicles. IC Role / Device Role / Timing Role: Robust switching element handling 1A inrush and 500mA hold current with transient immunity. Use Value: 2A ICM peak rating accommodates solenoid inrush spikes; 4kV HBM protects against ignition noise coupling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZXTN25040DFHTA | Higher VCEO (100V), lower VCE(sat) (150mV @ 1A), but SOT23-6 package with exposed pad - requires different layout. | Better for 48V systems or higher-voltage industrial loads; not drop-in due to pinout and thermal pad. | Select if system voltage exceeds 60V or thermal budget is tighter; re-layout required. |
| MMBT4401-7-F | Lower VCEO (40V), higher VCE(sat) (750mV @ 150mA), no AEC-Q101 qualification. | Only suitable for non-automotive 5–12V logic-level switching; fails load-dump and temperature requirements. | Use only in cost-sensitive consumer designs where AEC-Q101 and 60V rating are unnecessary. |
Compared with ZXTN25040DFHTA and MMBT4401-7-F, DSS4160TQ-7 uniquely balances AEC-Q101 compliance, 60V capability, and 280mV saturation in standard SOT23 - making it optimal for volume automotive 12V/24V switching where layout reuse and qualification traceability are mandatory.
Availability
DSS4160TQ-7 is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and start-stop system interfaces requiring stable component supply and AEC-Q101 traceability.
Supply support for DSS4160TQ-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 automotive, industrial, and computing markets.
DSS4160TQ-7 belongs to Diodes' AEC-Q101-qualified low-saturation transistor family, engineered specifically for automotive power switching where low conduction loss and transient robustness are critical.
FAQ
What is the maximum safe operating temperature for DSS4160TQ-7?
The DSS4160TQ-7 has a junction temperature range of –55°C to +150°C. Its maximum continuous ambient temperature is +125°C when mounted on 15mm × 15mm 1oz copper, based on RθJA = 172°C/W and PD = 725mW. Derating begins linearly above 25°C ambient, reaching zero power at 150°C.
Is DSS4160TQ-7 pin-compatible with standard SOT23 NPN transistors like MMBT4401?
Yes - DSS4160TQ-7 uses the standard SOT23 pinout (Emitter-Base-Collector on pins 1–2–3), matching MMBT4401, PN2222A, and other 3-pin SOT23 NPN devices. However, its higher current capability and lower VCE(sat) may require verification of base drive strength and thermal layout.
Does DSS4160TQ-7 require external flyback protection when driving inductive loads?
No external flyback diode is required for basic operation, but Diodes Incorporated recommends using a Schottky clamp (e.g., 1N5819) across the load for enhanced reliability in automotive environments. The transistor's 60V VCEO rating provides margin against typical inductive kickback, but clamping improves long-term robustness under repeated transients.
How does the "Q" suffix in DSS4160TQ-7 differ from DSS4160T-7?
The "Q" suffix denotes automotive-grade qualification: both parts share identical electrical and thermal specs, but DSS4160TQ-7 undergoes additional AEC-Q101 stress testing, PPAP documentation, and traceable lot control per IATF 16949. DSS4160T-7 is the industrial-grade version without automotive certification.
DSS4160TQ-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:
- NPN
- Current - Collector (Ic) (Max):
- 1 A
- Voltage - Collector Emitter Breakdown (Max):
- 60 V
- Vce Saturation (Max) @ Ib, Ic:
- 280mV @ 100mA, 1A
- Current - Collector Cutoff (Max):
- 100nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 500mA, 5V
- Power - Max:
- 725 mW
- Frequency - Transition:
- 150MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DSS4160TQ-7 FAQ
1.How can I place an order for DSS4160TQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DSS4160TQ-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 DSS4160TQ-7 reliable?
The price and inventory of DSS4160TQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DSS4160TQ-7 is usually 5 days.
3.What payment methods are accepted for DSS4160TQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DSS4160TQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DSS4160TQ-7?
DSS4160TQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DSS4160TQ-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 DSS4160TQ-7?
For technical support, including DSS4160TQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DSS4160TQ-7 requirements.
6.How does Aetrix verify that DSS4160TQ-7 is sourced from the original manufacturer or authorized distributors?
All DSS4160TQ-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 DSS4160TQ-7 meets industry standards.
7.What is the process for return or replacement of DSS4160TQ-7?
All DSS4160TQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DSS4160TQ-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 DSS4160TQ-7 part is unused and in its original packaging.
Return procedure for DSS4160TQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DSS4160TQ-7 Tags
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