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onsemi 2SC3649S-TD-E
- Part No.:
- 2SC3649S-TD-E
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
2SC3649S-TD-E.pdf
- Description:
- TRANS NPN 160V 1.5A PCP
- Quantity:
- Payment:
- Shipping:
Inventory:230
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Product details
Overview
2SC3649S-TD-E from onsemi is an NPN bipolar junction transistor in PCP (SOT-89) package, rated for 160 V VCEO, 1.5 A IC, and low 130–450 mV VCE(sat) at IC = 500 mA / IB = 50 mA. It delivers 120 MHz fT, 14–22 pF Cob, and hFE of 100–400 (Rank S/T), suited for high-density switching power supplies and motor drive stages.
For engineers reviewing the 2SC3649S-TD-E datasheet, pinout, applications, or equivalent options, key selection criteria include verified VCE(sat) performance at 500 mA, guaranteed hFE binning (Rank S), Pb-free TD reel packaging, and SC-62 mechanical compatibility with thermal pad mounting on ceramic substrates.
Technical Context
This NPN transistor employs FBET and MBIT processes to achieve high breakdown voltage and low saturation voltage simultaneously. Its design targets stable DC amplification and fast switching-ton = 40 ns, tf = 40–80 ns-with defined storage time (tstg = 0.7–1.2 μs) under specified test conditions.
It operates within a junction temperature range of –55°C to +150°C and supports pulsed collector current up to 2.5 A. The device is characterized at Ta = 25°C with strict derating curves for PC (1.5 W on 250 mm² ceramic substrate vs. 500 mW free-air), confirming its suitability for thermally constrained hybrid IC layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 160 V - Supports primary-side switching in offline SMPS up to 120 VAC input with margin. |
| IC | 1.5 A continuous - Enables medium-power load switching without forced cooling in compact PCB areas. |
| VCE(sat) | 130–450 mV @ IC=500 mA - Reduces conduction loss and self-heating in saturated-switch applications. |
| fT | 120 MHz - Ensures adequate gain at audio and low RF frequencies; sufficient for <100 kHz PWM control loops. |
| hFE | 100–400 (Rank S/T) - Provides predictable base drive requirements across production lots for consistent biasing. |
| Cob | 14–22 pF @ VCB=10 V - Limits Miller effect in high-speed switching; compatible with standard gate-drive timing budgets. |
| PC | 1.5 W on ceramic substrate - Allows direct mounting on thermally conductive hybrid boards without heatsinks. |
Pinout & Package
Package: PCP (JEITA/JEDEC SC-62, industry-recognized as SOT-89), molded plastic with exposed thermal pad. Dimensions: 4.5 × 2.5 × 1.6 mm (L×W×H), mass 0.058 g. Designed for surface-mount reflow on ceramic substrates (250 mm² × 0.8 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control terminal for forward-active and saturation bias; requires current-limited drive per hFE and VBE(sat). |
| 2 | Collector | Main current sink path; electrically connected to thermal pad-must be routed to ground or low-impedance plane for heat dissipation. |
| 3 | Emitter | Current source reference node; tied to system ground or low-side shunt in common-emitter configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Low VCE(sat) | 130–450 mV ensures ≤0.225 W conduction loss at 500 mA, reducing thermal stress in sealed enclosures. |
| High VCEO rating | 160 V enables use in 100–120 VAC line-powered circuits without snubber networks in non-isolated topologies. |
| Ultrasmall PCP package | SOT-89 footprint (4.5 × 2.5 mm) allows placement density >2× higher than TO-92 in hybrid power modules. |
| FBET/MBIT process | Delivers tight hFE distribution and stable fT across temperature, critical for production yield in automotive-grade assemblies. |
| Pb-free & halogen-free option | TD-E marking confirms RoHS-compliant termination and solderability per J-STD-020 moisture sensitivity level 3. |
Applications
| DC-DC Converter Switch | Linear Regulator Pass Element |
|---|---|
|
Use Scenario: High-efficiency buck converter operating at 50–100 kHz in industrial sensor nodes. IC Role / Device Role / Timing Role: Main power switch in non-synchronous topology, driven by PWM controller with fixed 10:1 IC:IB ratio. Use Value: Low VCE(sat) minimizes dropout and improves efficiency at 1.2 A load; 120 MHz fT ensures clean turn-off edge. |
Use Scenario: Adjustable positive linear regulator delivering 1.5 A at 5–12 V output from 15–24 V input. IC Role / Device Role / Timing Role: Series pass element controlled by error amplifier feedback loop; operates in linear region. Use Value: 1.5 A IC rating and 150°C Tj support full-load operation with minimal heatsink; hFE stability reduces output drift. |
| Motor Driver Half-Bridge | Power Supply Protection Switch |
|
Use Scenario: Low-voltage BLDC driver stage controlling 24 V, 1 A fan or pump via six-step commutation. IC Role / Device Role / Timing Role: Low-side switch in half-bridge configuration; switched at ≤20 kHz with dead-time control. Use Value: 40 ns ton and 80 ns tf enable precise PWM duty cycle control; 2.5 A ICP handles startup surge currents. |
Use Scenario: Overcurrent protection circuit disconnecting 12 V battery-fed subsystems during fault events. IC Role / Device Role / Timing Role: Fast-acting series cutoff switch triggered by comparator output; biased into saturation. Use Value: 130 mV VCE(sat) limits voltage drop during normal operation; 160 V VCEO withstands load-dump transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN general-purpose switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MJD127G | Higher VCEO (100 V), lower fT (3 MHz), TO-252 package, no hFE binning | Less suitable for high-frequency SMPS; better for high-current linear regulation due to larger thermal mass | Select when board space permits DPAK and thermal demands exceed 1.5 W sustained dissipation |
| ZTX653 | Lower VCEO (60 V), higher hFE (250–600), SOT-89 package, same Pb-free TD-E reel option | Not viable for 100+ VAC-derived rails; preferred for low-voltage logic-level switching with minimal base drive | Choose only for sub-48 V systems where tighter hFE control and lower VCE(sat) at <200 mA are prioritized |
Compared with MJD127G and ZTX653, the 2SC3649S-TD-E uniquely balances 160 V standoff, 120 MHz bandwidth, and binned hFE in SOT-89-making it optimal for compact, high-voltage, medium-frequency switching where thermal management relies on ceramic substrate mounting.
Availability
2SC3649S-TD-E is available at Aetrix Electronics and suitable for DC-DC converters, motor driver half-bridges, and power supply protection switches requiring stable component supply, traceable Pb-free sourcing, and volume-ready reel packaging.
Supply support for 2SC3649S-TD-E 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
onsemi (Semiconductor Components Industries, LLC) is a global semiconductor supplier focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications.
The 2SC3649S-TD-E belongs to onsemi's general-purpose bipolar transistor product line, engineered for high-voltage switching and power control in space-constrained hybrid ICs and industrial power modules.
FAQ
What is the maximum continuous collector current for the 2SC3649S-TD-E?
The 2SC3649S-TD-E is rated for 1.5 A continuous collector current (IC) at Ta = 25°C with proper thermal management. When mounted on a 250 mm² ceramic substrate (0.8 mm thick), it supports 1.5 A without exceeding 150°C junction temperature. Derating applies above 25°C ambient per the published PC–Ta curve in the datasheet.
Does the 2SC3649S-TD-E have a specified gain bin, and what does "S" in the part number indicate?
Yes-the "S" in 2SC3649S-TD-E denotes hFE Rank S, meaning DC current gain is binned between 100 and 200 at VCE = 5 V and IC = 100 mA. This binning ensures predictable base drive requirements in production designs, unlike un-binned variants that span 100–400.
What is the thermal pad connection requirement for the 2SC3649S-TD-E in the PCP package?
The collector terminal (Pin 2) of the 2SC3649S-TD-E is internally connected to the exposed thermal pad. For reliable thermal performance, this pad must be soldered to a large copper area-ideally a dedicated ground or low-impedance thermal plane-and designed per the land pattern example in the datasheet (PS No.2007-7/7).
Can the 2SC3649S-TD-E replace the 2SC3649T-TD-E in a design?
Yes-both share identical electrical specs and package, but differ in hFE binning: "S" = 100–200, "T" = 200–400. Substituting 2SC3649S-TD-E for 2SC3649T-TD-E may require adjusting base resistor values to maintain saturation, especially in high-gain-dependent linear applications.
Is the 2SC3649S-TD-E compliant with RoHS and halogen-free standards?
Yes-the "-E" suffix in 2SC3649S-TD-E confirms Pb-free termination and compliance with EU RoHS Directive 2011/65/EU. It is not halogen-free; for halogen-free versions, select the "-H" variant (e.g., 2SC3649S-TD-H), which meets IEC 61249-2-21 requirements.
2SC3649S-TD-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 1.5 A
- Voltage - Collector Emitter Breakdown (Max):
- 160 V
- Vce Saturation (Max) @ Ib, Ic:
- 450mV @ 50mA, 500mA
- Current - Collector Cutoff (Max):
- 1µA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 100mA, 5V
- Power - Max:
- 500 mW
- Frequency - Transition:
- 120MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PCP
2SC3649S-TD-E FAQ
1.How can I place an order for 2SC3649S-TD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for 2SC3649S-TD-E 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 2SC3649S-TD-E reliable?
The price and inventory of 2SC3649S-TD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SC3649S-TD-E is usually 5 days.
3.What payment methods are accepted for 2SC3649S-TD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SC3649S-TD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2SC3649S-TD-E?
2SC3649S-TD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2SC3649S-TD-E 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 2SC3649S-TD-E?
For technical support, including 2SC3649S-TD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SC3649S-TD-E requirements.
6.How does Aetrix verify that 2SC3649S-TD-E is sourced from the original manufacturer or authorized distributors?
All 2SC3649S-TD-E 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 2SC3649S-TD-E meets industry standards.
7.What is the process for return or replacement of 2SC3649S-TD-E?
All 2SC3649S-TD-E units undergo pre-shipment inspection (PSI). If there is an issue with 2SC3649S-TD-E, 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 2SC3649S-TD-E part is unused and in its original packaging.
Return procedure for 2SC3649S-TD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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