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onsemi 1N4935RLG
- Part No.:
- 1N4935RLG
- Manufacturer:
- onsemi
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4935RLG.pdf
- Description:
- DIODE GEN PURP 200V 1A AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,021
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Product details
Overview
1N4935RLG from onsemi is a 1.0 A, 200 V axial-lead fast recovery rectifier diode with 150 ns typical reverse recovery time, 1.2 V max forward voltage at 1.0 A and 25°C, and 65°C/W junction-to-ambient thermal resistance. It serves as a primary output rectifier in offline AC/DC power supplies and flyback converters operating up to 250 kHz.
For engineers reviewing the 1N4935RLG datasheet, pinout, applications, or equivalent options, key selection criteria include its 200 V PIV rating, fast 150–300 ns trr range, low 1.05–1.2 V VF, robust 30 A non-repetitive surge capability, and Pb-free DO-41 axial package compatibility with wave and hand soldering at 260°C for 10 seconds.
Technical Context
This device belongs to onsemi's family of glass-passivated fast recovery rectifiers optimized for high-frequency switching applications including DC power supplies, inverters, choppers, and ultrasonic drivers. Its design emphasizes low reverse recovery charge (Qrr) and minimal RF interference during commutation.
The 1N4935RLG operates across −65°C to +150°C junction temperature range with derated average forward current above 75°C ambient. Its DO-41 package features cathode polarity band marking and corrosion-resistant, solderable leads compliant with JEDEC Case 59-10 mechanical outline.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Repetitive Reverse Voltage | 200 V - supports DC blocking in 170 VAC-derived supplies with safety margin |
| Average Forward Current (TA = 75°C) | 1.0 A - continuous conduction capability in compact PCB-mounted designs |
| Reverse Recovery Time (trr) | 150–300 ns - enables efficient operation up to 250 kHz switching frequency |
| Forward Voltage (IF = 1.0 A, TA = 25°C) | 1.05–1.2 V - limits conduction loss to ≤1.2 W at rated DC load |
| Non-Repetitive Peak Surge Current | 30 A - withstands inrush and transient overloads without failure |
| Junction-to-Ambient Thermal Resistance | 65°C/W - defines minimum heatsinking requirement for thermal stability |
| Operating Junction Temperature | −65°C to +150°C - suitable for industrial and automotive under-hood environments |
Pinout & Package
Package: Axial-lead DO-41 (JEDEC Case 59-10), epoxy-molded, glass-passivated die, cathode indicated by band. Dimensions: 4.10–5.20 mm length × 2.00–2.70 mm diameter, 0.71–0.86 mm lead diameter, 25.4 mm lead length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Output terminal for forward conduction | Connects to positive rail in half-wave rectification; carries full load current during conduction |
| Anode (unbanded end) | Input terminal for forward conduction | Connects to transformer secondary or switching node; reverse-biased during off-state |
Key Features
| Feature | Design Value |
|---|---|
| Fast recovery time | 150 ns typical - reduces switching losses and EMI in high-frequency converters |
| Pb-free construction | RoHS-compliant DO-41 package - meets global environmental compliance requirements |
| High surge current rating | 30 A IFSM - accommodates cold-start surges and line transients without degradation |
| Low forward voltage | 1.05 V typical at 1 A - improves system efficiency in low-voltage output stages |
| Corrosion-resistant terminals | Solderable leads with 260°C/10 s tolerance - ensures reliable assembly in automated and manual processes |
Applications
| AC/DC Power Supply Rectification | Inverter Output Stage |
|---|---|
Use Scenario: Single-phase bridge or half-wave rectification in universal-input offline SMPS delivering 5–24 V DC outputs. IC Role / Device Role / Timing Role: Primary silicon rectifier conducting during positive half-cycles; blocks reverse voltage during negative half-cycles. Use Value: 200 V PIV and 1.0 A IO support 170 VAC RMS input with margin; 150 ns trr minimizes switching loss at 65–100 kHz operation. | Use Scenario: Freewheeling path in H-bridge motor inverters driving 24–48 V DC brushed or BLDC motors. IC Role / Device Role / Timing Role: Clamp inductive kickback energy during MOSFET turn-off; conducts only during dead-time and flyback intervals. Use Value: 30 A IFSM handles peak motor current spikes; fast trr prevents cross-conduction and shoot-through risk. |
| Ultrasonic Driver Protection | Chopper Circuit Snubber |
Use Scenario: Output stage protection in 20–100 kHz ultrasonic cleaning or welding generators. IC Role / Device Role / Timing Role: Reverse-polarity clamp and freewheeling path for resonant tank current reversal. Use Value: Low Qrr and 150 ns trr suppress voltage overshoot during rapid polarity reversal; glass passivation ensures reliability at elevated temperatures. | Use Scenario: Energy recirculation path in step-down chopper regulators used in battery-powered industrial tools. IC Role / Device Role / Timing Role: Provides low-loss return path for inductor current when main switch opens. Use Value: 1.2 V VF limits conduction loss during high-duty-cycle operation; DO-41 axial form factor simplifies through-hole layout and thermal relief. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R02FL | 1 A, 200 V, 125 ns trr, TO-220AC package | Higher thermal mass; requires heatsink for >0.5 A continuous use | Preferred where higher surge immunity and board-level heat spreading are needed |
| ES1D-E3/57T | 1 A, 200 V, 35 ns trr, SMA surface-mount package | Ultra-fast but lower surge rating (25 A); no axial lead option | Selected for space-constrained, high-frequency (>500 kHz) designs with SMT assembly |
Compared with STTH1R02FL and ES1D-E3/57T, the 1N4935RLG offers balanced speed (150 ns), surge robustness (30 A), and axial through-hole mounting-making it optimal for cost-sensitive, medium-frequency industrial power supplies where manual rework and thermal cycling reliability are priorities.
Availability
1N4935RLG is available at Aetrix Electronics and suitable for AC/DC power supplies, motor inverters, ultrasonic drivers, and chopper-based battery converters requiring stable component supply and long-term manufacturability.
Supply support for 1N4935RLG 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and IoT applications.
The 1N493x series was developed specifically for high-reliability, medium-power fast recovery rectification in cost-sensitive industrial and consumer power systems where axial-leaded packaging and proven thermal performance are essential.
FAQ
What is the maximum reverse voltage rating for the 1N4935RLG?
The 1N4935RLG has a peak repetitive reverse voltage (VRRM) rating of 200 V. This value represents the maximum instantaneous reverse voltage the device can block repeatedly without breakdown under specified operating conditions. It is validated per JEDEC standards and applies across the full −65°C to +150°C junction temperature range. The 1N4935RLG must not be subjected to reverse voltages exceeding this rating in normal operation.
Does the 1N4935RLG have a Pb-free package?
Yes, the 1N4935RLG is a Pb-free device compliant with RoHS Directive 2011/65/EU. Its DO-41 axial package uses lead-free terminations and conforms to onsemi's Pb-free manufacturing standard. The "G" suffix in the part number explicitly denotes Pb-free construction, and the device is shipped in tape-and-reel format containing 5,000 units per reel.
What is the thermal resistance of the 1N4935RLG?
The 1N4935RLG has a typical junction-to-ambient thermal resistance (RJA) of 65°C/W when mounted on a standard printed circuit board. This value assumes JEDEC-standard PCB layout conditions and is critical for calculating maximum allowable power dissipation at a given ambient temperature. Derating curves in the official datasheet confirm 1.0 A average forward current at TA = 75°C.
How does the 1N4935RLG differ from the 1N4934RLG and 1N4936RLG?
The 1N4935RLG differs from 1N4934RLG (100 V VRRM) and 1N4936RLG (400 V VRRM) solely in its peak repetitive reverse voltage rating-200 V versus 100 V and 400 V respectively. All three share identical forward characteristics (1.0 A IO, 1.2 V VF), recovery time (150 ns typ), package (DO-41), and thermal specs (65°C/W RJA). Selection depends strictly on required blocking voltage margin for the target application.
Can the 1N4935RLG be used in place of a standard 1N4007 rectifier?
No-the 1N4935RLG is not a direct replacement for the 1N4007. While both are 1 A axial diodes, the 1N4007 is a general-purpose rectifier with 1000 V VRRM and 30 μs recovery time, whereas the 1N4935RLG is a fast recovery device rated at 200 V VRRM and 150 ns trr. Substituting the 1N4935RLG in a 1N4007 application risks reverse breakdown; using the 1N4007 in place of the 1N4935RLG causes excessive switching loss and EMI in high-frequency circuits.
1N4935RLG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 300 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
- Operating Temperature - Junction:
- -65°C ~ 150°C
1N4935RLG FAQ
1.How can I place an order for 1N4935RLG through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4935RLG 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 1N4935RLG reliable?
The price and inventory of 1N4935RLG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4935RLG is usually 5 days.
3.What payment methods are accepted for 1N4935RLG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4935RLG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4935RLG?
1N4935RLG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4935RLG 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 1N4935RLG?
For technical support, including 1N4935RLG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4935RLG requirements.
6.How does Aetrix verify that 1N4935RLG is sourced from the original manufacturer or authorized distributors?
All 1N4935RLG 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 1N4935RLG meets industry standards.
7.What is the process for return or replacement of 1N4935RLG?
All 1N4935RLG units undergo pre-shipment inspection (PSI). If there is an issue with 1N4935RLG, 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 1N4935RLG part is unused and in its original packaging.
Return procedure for 1N4935RLG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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