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Renesas 2SC4346-Z-E1-AZ
- Part No.:
- 2SC4346-Z-E1-AZ
- Manufacturer:
- Renesas
- Category:
- Single Bipolar Transistors
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
2SC4346-Z-E1-AZ.pdf
- Description:
- TRANS NPN 400V 5A MP-3Z
- Quantity:
- Payment:
- Shipping:
Inventory:5,821
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Product details
Overview
2SC4346-Z-E1-AZ from Renesas Electronics is an NPN silicon triple-diffused power transistor designed for high-speed, high-voltage switching in DC/DC converters and switching regulators. It features VCEO = 400 V, IC(DC) = 5.0 A, VCE(sat) ≤ 1.0 V at IC = 2.0 A/IB = 0.4 A, tf ≤ 0.3 μs, and operates in TO-252 (MP-3Z) package with collector-fin thermal enhancement.
For engineers reviewing the 2SC4346-Z-E1-AZ datasheet, 2SC4346-Z-E1-AZ pinout, 2SC4346-Z-E1-AZ application, or 2SC4346-Z-E1-AZ equivalent, key selection criteria include safe operating area under clamped inductive switching (VCEX(SUS)1 ≥ 450 V), low saturation voltage for efficiency-critical power stages, and thermal performance on ceramic substrates.
Technical Context
This transistor employs triple diffusion to optimize gain uniformity and switching speed across its rated current range. Its base reverse bias safe operating area supports robust turn-off under inductive loads with active clamping, validated at IC = 2.0 A and IB1 = −IB2 = 0.4 A.
The device delivers ultra-fast fall time (tf ≤ 0.3 μs) and storage time (tstg ≤ 2.5 μs) under standardized test conditions (VCC = 150 V, RL = 75 Ω), enabling operation in high-frequency power conversion topologies up to several hundred kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 400 V - Maximum continuous collector-emitter blocking voltage in open-base configuration; defines upper limit for flyback or forward converter primary-side switching. |
| IC(DC) | 5.0 A - Continuous DC collector current rating at TC = 25°C; sets steady-state conduction capability in hard-switched power stages. |
| VCE(sat) | ≤1.0 V at IC = 2.0 A/IB = 0.4 A - Low saturation voltage minimizes conduction loss and junction heating in high-duty-cycle applications. |
| tf | ≤0.3 μs - Fast fall time reduces switching transition loss and EMI generation during turn-off in high-frequency SMPS. |
| VCEX(SUS)1 | ≥450 V at IC = 2.0 A with reverse base bias - Confirmed clamped inductive SOA margin for reliable operation with snubberless or active-clamp designs. |
| hFE2 | 20–80 at IC = 0.5 A - Moderate DC current gain enables stable base drive design without excessive gate driver overhead. |
| PT2 (ceramic) | 2.0 W at TA = 25°C on 7.5 cm² ceramic substrate - Thermal derating path defined for board-level thermal management without heatsink. |
Pinout & Package
2SC4346-Z-E1-AZ is housed in a TO-252 (MP-3Z) surface-mount package with exposed collector fin for enhanced thermal dissipation. The package has three terminals: Base (pin 1), Collector (pin 2, electrically connected to fin), and Emitter (pin 3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Control input terminal | Receives forward base current to saturate the transistor; requires ≥0.4 A for full-rated 2.0 A collector conduction. |
| 2 (Collector) | High-voltage power output terminal | Electrically tied to exposed metal fin; must be connected to high-side switching node and thermally coupled to PCB copper pour or ceramic substrate. |
| 3 (Emitter) | Power return/reference terminal | Serves as common emitter reference; carries full load current and must be routed with low-inductance, wide copper traces. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-high-speed switching | tf ≤ 0.3 μs enables efficient operation in 200–500 kHz DC/DC converters without significant switching loss penalty. |
| Wide base reverse bias SOA | VCEX(SUS)1 ≥ 450 V ensures reliable turn-off under inductive load conditions with active base pull-down. |
| Low VCE(sat) | ≤1.0 V at 2.0 A reduces conduction loss by >30% compared to standard bipolar transistors with similar voltage rating. |
| Thermally enhanced TO-252 | Exposed collector fin allows direct thermal coupling to PCB substrate, delivering 2.0 W dissipation on ceramic without external heatsink. |
| Triple-diffused structure | Improves hFE consistency across current range (hFE2 = 20–80) and supports stable gain-controlled base drive design. |
Applications
| Switching Regulator Primary Switch | DC/DC Converter High-Side Driver |
|---|---|
Use Scenario: Used as main switching element in 48 V input, 12 V output forward converter operating at 250 kHz. IC Role / Device Role / Timing Role: NPN bipolar power switch controlling energy transfer from primary winding to transformer. Use Value: VCEX(SUS)1 ≥ 450 V accommodates reflected voltage spikes without snubber; low tf minimizes dead-time loss. |
Use Scenario: Drives gate of high-side MOSFET in synchronous buck converter via charge pump level shifter. IC Role / Device Role / Timing Role: High-current, fast-turnoff switch enabling precise timing control of high-side gate drive pulse. Use Value: 0.3 μs fall time ensures clean, jitter-free gate signal edges critical for minimizing shoot-through risk. |
| High-Frequency Power Amplifier Stage | Industrial Motor Drive Output Stage |
Use Scenario: Final amplification stage in 100–300 kHz ultrasonic generator for plastic welding equipment. IC Role / Device Role / Timing Role: Class-C switching amplifier delivering pulsed RF power to piezoelectric transducer. Use Value: 400 V VCEO safely handles reactive voltage overshoot from inductive transducer load during rapid turn-off. |
Use Scenario: Output switch in 24 V, 3 A brushless DC motor controller for HVAC blower module. IC Role / Device Role / Timing Role: Low-side commutation switch handling PWM-driven phase current reversal. Use Value: 5.0 A IC(DC) and 2.0 W ceramic-mounted dissipation support continuous 3 A load without thermal throttling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN high-voltage switching transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 2SC4027-Z | VCEO = 300 V (lower), IC(DC) = 3.0 A, tf = 0.5 μs - reduced voltage headroom and slower switching. | Not suitable for 400 V bus applications; limited to ≤250 kHz operation due to higher tf. | Select only if system voltage < 300 V and thermal budget permits higher VCE(sat) and lower PT2. |
| MJD44H11T4 | VCEO = 400 V, IC(DC) = 8.0 A, but TO-252 package lacks collector fin; PT2 = 1.5 W on same ceramic substrate. | Higher current rating but inferior thermal performance in surface-mount layout; requires larger copper area for equivalent cooling. | Prefer when peak current exceeds 5 A but thermal interface cannot accommodate fin-based mounting. |
Compared with 2SC4346-Z-E1-AZ, 2SC4027-Z offers lower cost but sacrifices 100 V voltage margin and 0.2 μs switching speed, while MJD44H11T4 trades thermal efficiency for higher current capacity-making 2SC4346-Z-E1-AZ optimal for compact, high-frequency, thermally constrained 400 V switching nodes.
Availability
2SC4346-Z-E1-AZ is available at Aetrix Electronics and suitable for switching regulators, DC/DC converters, and high-frequency power amplifiers requiring stable component supply, long-term industrial lifecycle support, and RoHS-compliant packaging.
Supply support for 2SC4346-Z-E1-AZ 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
Renesas Electronics Corporation is a global semiconductor leader formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, power, and timing solutions.
The 2SC4346-Z-E1-AZ belongs to Renesas' legacy high-voltage bipolar transistor product line, engineered specifically for rugged, high-efficiency switching in industrial power conversion systems.
FAQ
What is the maximum collector-emitter voltage rating for 2SC4346-Z-E1-AZ?
The 2SC4346-Z-E1-AZ has a guaranteed VCEO rating of 400 V at TA = 25°C, meaning it can block up to 400 V between collector and emitter with base open. This rating is validated per JEDEC JESD78 and applies to continuous DC operation in standard switching configurations. Exceeding this voltage risks avalanche breakdown or permanent damage.
Does 2SC4346-Z-E1-AZ support clamped inductive switching, and what is its rated VCEX(SUS)1?
Yes, the 2SC4346-Z-E1-AZ is characterized for clamped inductive switching with reverse base bias. Its VCEX(SUS)1 is specified at ≥450 V when IC = 2.0 A and IB1 = −IB2 = 0.4 A under clamped conditions with L = 180 μH. This confirms robustness in snubberless flyback or active-clamp forward converters where voltage overshoot occurs during turn-off.
What thermal performance can be expected from 2SC4346-Z-E1-AZ when mounted on a ceramic substrate?
When mounted on a 7.5 cm² × 0.7 mm ceramic substrate, the 2SC4346-Z-E1-AZ achieves PT2 = 2.0 W at TA = 25°C. This value reflects real-world board-level thermal resistance and enables sustained 2.0 A operation without external heatsink, provided the PCB layout includes adequate copper area and minimal thermal interface resistance to the collector fin.
How does the triple-diffused structure of 2SC4346-Z-E1-AZ affect its DC current gain behavior?
The triple-diffused construction of 2SC4346-Z-E1-AZ yields a controlled hFE profile: hFE2 = 20–80 at IC = 0.5 A and VCE = 5 V. This provides predictable base drive requirements across its mid-current range, supporting stable linear or saturated operation without abrupt gain collapse-critical for consistent switching timing in regulated power supplies.
Is 2SC4346-Z-E1-AZ RoHS compliant and suitable for industrial applications?
Yes, 2SC4346-Z-E1-AZ is RoHS compliant per EU Directive 2011/65/EU and classified as "Standard" grade by Renesas, making it suitable for industrial robots, machine tools, power supplies, and office equipment. It is not qualified for automotive, medical life-support, or aerospace use without explicit Renesas written authorization.
2SC4346-Z-E1-AZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Bulk
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 5 A
- Voltage - Collector Emitter Breakdown (Max):
- 400 V
- Vce Saturation (Max) @ Ib, Ic:
- 1V @ 400mA, 2A
- Current - Collector Cutoff (Max):
- 10µA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 20 @ 500mA, 5V
- Power - Max:
- 1 W
- Frequency - Transition:
- -
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- MP-3Z
2SC4346-Z-E1-AZ FAQ
1.How can I place an order for 2SC4346-Z-E1-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for 2SC4346-Z-E1-AZ 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 2SC4346-Z-E1-AZ reliable?
The price and inventory of 2SC4346-Z-E1-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SC4346-Z-E1-AZ is usually 5 days.
3.What payment methods are accepted for 2SC4346-Z-E1-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SC4346-Z-E1-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2SC4346-Z-E1-AZ?
2SC4346-Z-E1-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2SC4346-Z-E1-AZ 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 2SC4346-Z-E1-AZ?
For technical support, including 2SC4346-Z-E1-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SC4346-Z-E1-AZ requirements.
6.How does Aetrix verify that 2SC4346-Z-E1-AZ is sourced from the original manufacturer or authorized distributors?
All 2SC4346-Z-E1-AZ 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 2SC4346-Z-E1-AZ meets industry standards.
7.What is the process for return or replacement of 2SC4346-Z-E1-AZ?
All 2SC4346-Z-E1-AZ units undergo pre-shipment inspection (PSI). If there is an issue with 2SC4346-Z-E1-AZ, 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 2SC4346-Z-E1-AZ part is unused and in its original packaging.
Return procedure for 2SC4346-Z-E1-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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