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Diodes Incorporated ZDT795AQTA
- Part No.:
- ZDT795AQTA
- Manufacturer:
- Diodes Incorporated
- Category:
- Bipolar Transistor Arrays
- Package:
- SOT-223-8
- Datasheet:
-
ZDT795AQTA.pdf
- Description:
- TRANS 2PNP DUAL 140V 500MA SM-8
- Quantity:
- Payment:
- Shipping:
Inventory:8,877
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Product details
Overview
ZDT795AQTA from Diodes Incorporated is a dual PNP medium-power bipolar junction transistor (BJT) in SM-8 package, rated for -140V VCEO, -0.5A continuous collector current per emitter, and 2.25W power dissipation at TA = +25°C. It is AEC-Q101 qualified and manufactured in IATF16949-certified facilities for automotive load switching and voltage regulation circuits.
For engineers reviewing the ZDT795AQTA datasheet, ZDT795AQTA pinout, ZDT795AQTA application, or ZDT795AQTA equivalent, key selection criteria include its dual PNP configuration, high-voltage breakdown (-140V), low VCE(sat) (-0.25V at IC = -500mA), RoHS-compliant green packaging, and thermal resistance of 55.6°C/W (junction-to-ambient).
Technical Context
This device integrates two independent PNP transistors in a single SM-8 (SOT-223-8L) thermally enhanced package with shared collector leads. Each transistor supports -140V VCEO and delivers hFE of 300–800 at IC = -10mA, enabling robust current amplification in high-side switching configurations.
Its transient thermal impedance profile supports pulsed operation up to 1A peak current, while the 30.7°C/W junction-to-leads resistance facilitates efficient heat transfer through the collector pad. The -7V VEBO and 100MHz fT support fast turn-on and stable biasing in analog control loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -140V - Enables use in 48V automotive systems with margin against load-dump transients |
| IC (cont.) | -0.5A per transistor - Supports medium-power relay drivers and LED matrix controllers |
| PD | 2.25W (single die) - Requires ≥25mm × 25mm 2oz copper pad for full-rated operation |
| hFE | 300–800 @ IC = -10mA - Ensures reliable base drive efficiency across production lots |
| VCE(sat) | -0.25V @ IC = -500mA, IB = -50mA - Minimizes conduction loss in high-current switching nodes |
| fT | 100MHz - Sufficient for PWM frequencies up to ~10MHz in feedback-controlled regulators |
| RθJA | 55.6°C/W - Defines maximum ambient temperature limit for safe continuous operation |
Pinout & Package
Package: SM-8 (8-lead SOT-223 variant), molded plastic with UL 94V-0 rating, matte tin-plated leads, 0.117g mass, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| B1 | Base of Transistor 1 | Direct control input for first PNP; requires current-limited drive to avoid saturation delay |
| E1 | Emitter of Transistor 1 | High-side reference node; connects to supply rail in common-emitter switching |
| C1/C2 | Shared Collector Terminal | Thermally optimized pad; must be soldered to ≥25mm² copper area for rated power handling |
| B2 | Base of Transistor 2 | Independent control input; electrically isolated from B1 for dual-channel operation |
| E2 | Emitter of Transistor 2 | Second high-side output node; enables dual-load control without cross-coupling |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood applications including engine control modules and body electronics |
| Dual PNP topology | Reduces board space vs. discrete dual-transistor solutions; eliminates inter-device parameter mismatch |
| Green compound & lead-free finish | Complies with EU RoHS 3 (2015/863/EU) and halogen/antimony limits (<900ppm Br/Cl, <1000ppm Sb) |
| Low RθJL | 30.7°C/W junction-to-leads enables direct thermal path to PCB ground plane via collector pad |
| ESD robustness | 4kV HBM rating ensures reliability during automated assembly and field service handling |
Applications
| Automotive Body Control Module | Industrial Relay Driver |
|---|---|
Use Scenario: Controlling door lock actuators and interior lighting loads in 12V/48V vehicle architectures. IC Role / Device Role / Timing Role: Dual high-side switch providing independent current paths for two resistive/inductive loads. Use Value: -140V VCEO withstands ISO 7637-2 pulse 5a transients; -0.25V VCE(sat) reduces thermal stress at 500mA load current. | Use Scenario: Driving 24V industrial relays in PLC I/O modules with galvanically isolated outputs. IC Role / Device Role / Timing Role: Medium-power interface between microcontroller GPIO and relay coil, replacing discrete BJT arrays. Use Value: Dual configuration halves component count; hFE ≥300 ensures full saturation with ≤5mA base drive. |
| LED Matrix Power Controller | DC-DC Converter Bias Circuit |
Use Scenario: Segment-level current regulation in automotive exterior lighting (tail lamps, DRLs) using multiplexed LED strings. IC Role / Device Role / Timing Role: High-side current sink for constant-current LED segments, operating in linear or PWM mode. Use Value: 2.25W power rating supports continuous 500mA operation with minimal heatsinking; fT = 100MHz allows clean PWM edge response. | Use Scenario: Providing stable bias current to error amplifiers and reference circuits in isolated flyback converters. IC Role / Device Role / Timing Role: Precision current source for op-amp bias networks requiring low noise and thermal stability. Use Value: Tight hFE spread (300–800) and -7V VEBO enable accurate current mirroring over -40°C to +125°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual PNP medium-power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZXT13P20DE6TA | Single PNP, SOT-26 package, VCEO = -20V, IC = -1.5A | Lacks dual topology; lower voltage rating unsuitable for 48V automotive transients | Select only for cost-sensitive 12V-only designs where dual channel not required |
| DMT3005LPSQ-13 | Dual PNP, TSOP-6 package, VCEO = -30V, IC = -0.3A, RθJA = 125°C/W | Lower voltage/current ratings and higher thermal resistance limit use in high-stress environments | Acceptable for non-automotive consumer applications with derated ambient temperature |
Compared with ZDT795AQTA, ZXT13P20DE6TA offers higher current but lacks dual functionality and automotive qualification, while DMT3005LPSQ-13 provides dual PNP operation but cannot sustain 48V system transients or deliver equivalent thermal performance in demanding layouts.
Availability
ZDT795AQTA is available at Aetrix Electronics and suitable for automotive body control modules, industrial relay drivers, LED matrix controllers, and DC-DC converter bias circuits requiring stable component supply with AEC-Q101 compliance and long-term lifecycle assurance.
Supply support for ZDT795AQTA 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 North America.
The ZDT795AQTA belongs to Diodes' Zetex automotive-qualified BJT portfolio, engineered specifically for high-reliability, high-voltage switching in harsh-environment applications such as engine management, chassis control, and electrified powertrain subsystems.
FAQ
What is the maximum allowable junction temperature for ZDT795AQTA?
The absolute maximum junction temperature is +150°C, with continuous operation limited by thermal derating above +25°C ambient. At 100°C ambient, maximum power dissipation drops to 1.35W (single die) due to the 55.6°C/W RθJA rating and linear derating curve shown in the datasheet Figure 2.
Can ZDT795AQTA be used in parallel configurations for higher current?
No-ZDT795AQTA is not designed for paralleling. Its dual-transistor structure shares a common collector terminal but has no internal matching or thermal coupling provisions. External paralleling would cause current imbalance due to hFE and VBE tolerances, risking thermal runaway without individual emitter resistors and matched layout.
Is the SM-8 package compatible with standard SOT-223 reflow profiles?
Yes-the SM-8 footprint aligns with IPC-7351B SOIC-8 and SOT-223-8 land patterns. Reflow must follow J-STD-020 Level 1 moisture sensitivity guidelines, with peak temperature ≤260°C and time above liquidus 60–90 seconds. The 0.117g mass and 1.6mm thickness require verified thermal mass compensation in stencil design.
Does ZDT795AQTA support linear (analog) operation, or is it intended only for switching?
ZDT795AQTA supports both modes: its fT = 100MHz and hFE consistency across IC = 10mA–500mA make it suitable for Class-A amplifier stages, while VCE(sat) ≤ -0.3V and low RθJL optimize it for high-efficiency switching. Linear use requires strict thermal management due to power dissipation limits.
ZDT795AQTA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-223-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- 2 PNP (Dual)
- Current - Collector (Ic) (Max):
- 500mA
- Voltage - Collector Emitter Breakdown (Max):
- 140V
- Vce Saturation (Max) @ Ib, Ic:
- 250mV @ 50mA, 500mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 300 @ 10mA, 2V
- Power - Max:
- 2.25W
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SM-8
ZDT795AQTA FAQ
1.How can I place an order for ZDT795AQTA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZDT795AQTA 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 ZDT795AQTA reliable?
The price and inventory of ZDT795AQTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZDT795AQTA is usually 5 days.
3.What payment methods are accepted for ZDT795AQTA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZDT795AQTA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZDT795AQTA?
ZDT795AQTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZDT795AQTA 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 ZDT795AQTA?
For technical support, including ZDT795AQTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZDT795AQTA requirements.
6.How does Aetrix verify that ZDT795AQTA is sourced from the original manufacturer or authorized distributors?
All ZDT795AQTA 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 ZDT795AQTA meets industry standards.
7.What is the process for return or replacement of ZDT795AQTA?
All ZDT795AQTA units undergo pre-shipment inspection (PSI). If there is an issue with ZDT795AQTA, 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 ZDT795AQTA part is unused and in its original packaging.
Return procedure for ZDT795AQTA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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