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Diodes Incorporated DZT951-13
- Part No.:
- DZT951-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
DZT951-13.pdf
- Description:
- TRANS PNP 60V 5A SOT-223-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,848
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Product details
Overview
DZT951-13 from Diodes Incorporated is a PNP epitaxial planar silicon transistor in SOT-223 package, rated for -60 V VCEO, -5 A IC, and 3 W power dissipation on standard PCB layout. It serves as a medium-power switching or linear amplification device in DC-DC converters, motor drivers, and load-switching circuits.
For engineers reviewing the DZT951-13 datasheet, DZT951-13 pinout, DZT951-13 application, or DZT951-13 equivalent, key selection criteria include verified VCE(SAT) ≤ -155 mV at IC = -2 A / IB = -200 mA, hFE ≥ 75 at IC = -5 A, and guaranteed -55°C to +150°C operating range with RoHS-compliant matte tin plating.
Technical Context
This PNP bipolar junction transistor uses epitaxial planar die construction for stable gain and low saturation voltage across wide current ranges. Its SOT-223 thermal pad enables effective heat transfer to PCB copper, supporting continuous 5 A operation under defined layout conditions.
It delivers fT = 120 MHz at IC = -100 mA, enabling use in medium-frequency switching applications. Cobo = 74 pF at VCB = -10 V supports predictable turn-off behavior in hard-switched topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -60 V - Maximum safe collector-emitter voltage before breakdown in common-emitter configuration |
| IC | -5 A - Continuous DC collector current rating under specified PCB thermal conditions |
| Ptot | 3 W - Power dissipation limit on FR-4 board with ≥4 in² copper area |
| VCE(SAT) | -155 mV @ IC = -2 A, IB = -200 mA - Low saturation voltage ensures <0.31 W conduction loss per switch event |
| hFE | 75 min @ IC = -5 A, VCE = -1 V - Confirmed DC current gain for high-current linear or switching bias design |
| fT | 120 MHz @ IC = -100 mA, VCE = -10 V - Enables reliable operation up to ~10–20 MHz practical switching frequencies |
| Tj Range | -55°C to +150°C - Validated junction temperature range for industrial and automotive under-hood environments |
Pinout & Package
Package: SOT-223 - Surface-mount plastic package with exposed thermal pad (Collector-connected tab), UL 94V-0 rated molding compound, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitting terminal for majority carriers (holes) | Connected to higher potential node in PNP switching; requires low-impedance return path |
| 2 (Base) | Control electrode for carrier injection | Requires current-limited drive (e.g., 200 mA max) to ensure full saturation without overdrive loss |
| 3 (Collector) | Current collection terminal (tab) | Internally connected to exposed metal pad; must be soldered to large copper pour for thermal management |
| 4 (Collector / Thermal Pad) | Primary heat conduction path | Electrically identical to Pin 3; mandatory connection to PCB ground or heatsink plane |
Key Features
| Feature | Design Value |
|---|---|
| Epitaxial planar die construction | Ensures tight parameter distribution (e.g., ±15% hFE) and repeatable VCE(SAT) across production lots |
| SOT-223 thermal pad integration | Enables 3 W dissipation on standard FR-4 without external heatsink when using ≥4 in² copper |
| RoHS-compliant matte tin plating | Supports lead-free reflow (J-STD-020C Level 1) and eliminates post-assembly cleaning requirements |
| Complementary NPN pairing (DZT851) | Allows matched push-pull or H-bridge designs with symmetrical VCE(SAT) and fT characteristics |
Applications
| DC-DC Converter High-Side Switch | Industrial Motor Driver Stage |
|---|---|
Use Scenario: Used as high-side switch in non-synchronous buck converter supplying 12 V/3 A to PLC I/O modules. IC Role / Device Role / Timing Role: PNP switching transistor controlling power rail delivery; driven by microcontroller GPIO via base resistor network. Use Value: VCE(SAT) ≤ -155 mV at -2 A reduces conduction loss to <0.31 W, improving efficiency over discrete alternatives with >200 mV drop. | Use Scenario: Drives 24 V DC brushed motor (Ipeak = 4.5 A) in factory automation actuator. IC Role / Device Role / Timing Role: Medium-power PNP switch in half-H bridge configuration with freewheeling diode protection. Use Value: Guaranteed hFE ≥ 75 at -5 A ensures reliable saturation with 500 mA base drive, eliminating risk of second breakdown during stall events. |
| LED Current Regulator | Power Supply OR-ing Circuit |
Use Scenario: Linear constant-current source for high-brightness LED string (350 mA, 24 V) in signage control unit. IC Role / Device Role / Timing Role: Pass transistor in emitter-follower configuration, regulated by op-amp feedback loop. Use Value: Low VBE(ON) (-935 mV typ at -5 A) enables precise current setpoint accuracy within ±2% over temperature. | Use Scenario: Back-to-back PNP configuration for redundant 48 V input OR-ing in telecom power shelf. IC Role / Device Role / Timing Role: Reverse-polarity protected power path switch with fast turn-off (toff = 350 ns). Use Value: Cobo = 74 pF and toff ≤ 350 ns minimize shoot-through risk during input switchover transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP medium-power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MJD951T4G | VCEO = -60 V, IC = -5 A, but SOT-223-3 (no thermal pad); Ptot = 1.5 W (derated) | Limited to lower duty-cycle or forced-air cooled use; unsuitable for sustained 3 W operation | Select only if thermal budget allows <1.5 W dissipation and PCB layout lacks thermal pad routing capability |
| ZTX951 | VCEO = -60 V, IC = -3 A, TO-92 package; hFE min = 100 @ -1 A | Lower current rating and no surface-mount thermal interface; not suitable for automated assembly | Choose only for prototyping or low-volume through-hole builds where SMT is unavailable |
Compared with MJD951T4G and ZTX951, DZT951-13 uniquely combines 3 W thermal capability via SOT-223 thermal pad, full -5 A rating, and RoHS-compliant matte tin plating-making it the only option qualified for high-reliability, volume-manufactured medium-power switching.
Availability
DZT951-13 is available at Aetrix Electronics and suitable for DC-DC converters, industrial motor drivers, and LED current regulators requiring stable component supply across extended product lifecycles.
Supply support for DZT951-13 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 centers across Asia and manufacturing in China, Taiwan, and the US.
The DZT951 belongs to Diodes' high-reliability bipolar transistor family, engineered specifically for industrial-grade medium-power switching and amplification where thermal robustness and parametric consistency are critical.
FAQ
What is the maximum allowable PCB copper area required to achieve the 3 W power rating?
The 3 W rating assumes mounting on FR-4 with ≥4 square inches of copper (minimum), per datasheet Note 4. Layout must follow IPC-SM-782 recommended pad dimensions (page 4), including direct connection of the exposed collector tab to internal or external copper planes. Derating applies below this copper area.
Is DZT951-13 pin-compatible with DZT851?
No-DZT951-13 (PNP) and DZT851 (NPN) are complementary types with identical SOT-223 mechanical footprint and pinout order (Emitter-Base-Collector-Tab), but opposite polarity. They can be used in matched pairs in push-pull or H-bridge circuits, provided drive logic accounts for polarity inversion.
Does the "Green" designation affect electrical performance?
No-the "Green" label refers solely to Diodes Incorporated's environmental policy: halogen-free molding compound and absence of antimony trioxide flame retardant. Electrical parameters-including VCE(SAT), hFE, and fT-are identical to non-Green versions and fully characterized per DS30786 Rev. 3.
Can DZT951-13 be used in linear amplifier mode?
Yes-its hFE stability (100–300 across IC = 10 mA to 10 A) and low VCE(SAT) support Class-A and Class-AB linear operation. However, thermal design must accommodate continuous power dissipation; derate linear use to ≤1.5 W without active cooling due to junction temperature limits.
DZT951-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 5 A
- Voltage - Collector Emitter Breakdown (Max):
- 60 V
- Vce Saturation (Max) @ Ib, Ic:
- 460mV @ 500mA, 5A
- Current - Collector Cutoff (Max):
- 50nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 2A, 1V
- Power - Max:
- 1 W
- Frequency - Transition:
- 120MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223-3
DZT951-13 FAQ
1.How can I place an order for DZT951-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DZT951-13 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 DZT951-13 reliable?
The price and inventory of DZT951-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DZT951-13 is usually 5 days.
3.What payment methods are accepted for DZT951-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DZT951-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DZT951-13?
DZT951-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DZT951-13 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 DZT951-13?
For technical support, including DZT951-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DZT951-13 requirements.
6.How does Aetrix verify that DZT951-13 is sourced from the original manufacturer or authorized distributors?
All DZT951-13 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 DZT951-13 meets industry standards.
7.What is the process for return or replacement of DZT951-13?
All DZT951-13 units undergo pre-shipment inspection (PSI). If there is an issue with DZT951-13, 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 DZT951-13 part is unused and in its original packaging.
Return procedure for DZT951-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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