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SR34_R1_00001
Panjit International Inc.
DIODE SCHOTTKY 40V 3A SMB
20366 Pcs New Original In Stock
Diode 40 V 3A Surface Mount SMB (DO-214AA)
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5.0 / 5.0
- (188 Ratings)
SR34_R1_00001
Product Overview
12964918
DiGi Electronics Part Number
SR34_R1_00001-DGManufacturer
Panjit International Inc.
SR34_R1_00001
Description
DIODE SCHOTTKY 40V 3A SMBInventory
20366 Pcs New Original In Stock
Diode 40 V 3A Surface Mount SMB (DO-214AA)
Quantity
Minimum 1
Minimum 1
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SR34_R1_00001 Technical Specifications
Category
Diodes, Rectifiers, Single Diodes
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
Technology
Schottky
Voltage - DC Reverse (Vr) (Max)
40 V
Current - Average Rectified (Io)
3A
Voltage - Forward (Vf) (Max) @ If
500 mV @ 3 A
Speed
Fast Recovery =< 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr
200 µA @ 40 V
Capacitance @ Vr, F
-
Mounting Type
Surface Mount
Package / Case
DO-214AA, SMB
Supplier Device Package
SMB (DO-214AA)
Operating Temperature - Junction
-55°C ~ 150°C
Base Product Number
SR34
Datasheet & Documents
HTML Datasheet
SR34_R1_00001-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8541.10.0080
Additional Information
Other Names
3757-SR34_R1_00001DKR
3757-SR34_R1_00001TR
Standard Package
800
Alternative Parts
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
DiGi Electronics provides support that makes ongoing customer relationships easy.
Dec 02, 2025
I highly recommend DiGi Electronics for their transparent pricing and excellent after-sales service.
Dec 02, 2025
The products from DiGi Electronics have proven to be highly resilient, maintaining performance even after extended use in demanding conditions.
Dec 02, 2025
Their shipments arrive faster than any other in the industry, saving me critical minutes.
Dec 02, 2025
DiGi Electronics offers incredible value for money, making high-quality tech accessible to everyone.
Dec 02, 2025
Affordable prices and helpful staff keep me coming back.
Dec 02, 2025
The support staff is knowledgeable and always willing to assist.
Dec 02, 2025
The secure packaging prevented any damage, even when the courier was a bit rough.
Dec 02, 2025
The affordability of their products is complemented by packaging that is built to last.
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Frequently Asked Questions (FAQ)
When designing a 3A power path for a 36V industrial sensor interface, can the SR34_R1_00001 Schottky diode safely handle transient voltage spikes above its 40V reverse rating, and what protection strategies should I implement to avoid catastrophic failure?
The SR34_R1_00001 is rated for a maximum DC reverse voltage of 40V, and exceeding this—even briefly—can lead to avalanche breakdown and permanent damage. In industrial environments with inductive loads or hot-plug events, transient spikes often exceed 50V. To mitigate risk, pair the SR34_R1_00001 with a TVS diode (e.g., SMAJ33A) rated for 33V clamping and place it upstream of the diode. Additionally, ensure your system’s nominal operating voltage stays well below 32V (80% derating) to provide margin. Never rely solely on the SR34_R1_00001 for surge protection—it is not an avalanche-rated device.
I'm replacing a Vishay VS-30BQ040PBF in a 24V DC/DC converter output stage—will the Panjit SR34_R1_00001 provide comparable efficiency and thermal performance, or could it introduce unexpected losses?
The SR34_R1_00001 has a lower forward voltage (500mV @ 3A) compared to the VS-30BQ040PBF (550mV @ 3A), which suggests slightly better conduction efficiency. However, the SR34_R1_00001 lacks published junction-to-ambient thermal resistance (RθJA) data under real PCB conditions, while Vishay provides detailed thermal curves. In practice, this means you must validate thermal performance in your layout—use a 2-layer board with adequate copper pour and thermal vias under the SMB pad. Monitor junction temperature during full-load testing; if exceeding 125°C, consider adding a small heatsink or switching to a diode with published thermal data like the STPS3H100A.
Can I use the SR34_R1_00001 in a synchronous buck converter’s freewheeling path instead of a standard rectifier diode, and what are the risks related to reverse recovery and switching noise?
While the SR34_R1_00001 is a fast-recovery Schottky diode (≤500ns), it is not ideal for synchronous buck freewheeling applications where the low-side MOSFET actively conducts. Using it here creates a 'diode emulation' mode that increases conduction losses and reduces efficiency versus true synchronous rectification. More critically, during dead-time intervals, the SR34_R1_00001 may experience high dV/dt stress, leading to electromagnetic interference (EMI) and potential false triggering. If you must use it temporarily (e.g., for startup or fault protection), ensure dead times are minimized and include snubber networks. For production designs, prefer integrated synchronous controllers or MOSFETs with body diodes better suited to high-frequency switching.
My design operates in a high-humidity outdoor environment—does the SR34_R1_00001’s MSL 1 rating guarantee long-term reliability, and should I still apply conformal coating despite the unlimited floor life?
MSL 1 indicates the SR34_R1_00001 can be exposed to ambient conditions indefinitely without moisture absorption issues during storage and reflow—but it does *not* imply immunity to corrosion or electrochemical migration in harsh operating environments. In high-humidity or salt-spray conditions, the exposed metal leads and solder joints remain vulnerable. We recommend applying a thin, non-conformal acrylic or silicone-based coating (e.g., HumiSeal 1B31) to prevent dendrite growth and leakage currents. Additionally, ensure your PCB finish (e.g., ENIG or OSP) is compatible with long-term outdoor use. The SR34_R1_00001 itself is RoHS3 compliant and lead-free, so avoid fluxes that leave corrosive residues.
I need to parallel two SR34_R1_00001 diodes to achieve 6A current handling in a solar charge controller—will this work reliably, or could thermal runaway cause one diode to fail prematurely?
Paralleling the SR34_R1_00001 diodes is risky without careful design. Schottky diodes have a negative temperature coefficient for forward voltage above ~1A, meaning as one diode heats up, its Vf drops, drawing more current and creating a thermal runaway condition. Even with matched parts, minor layout asymmetries (trace length, copper area) exacerbate imbalance. If you must parallel them, use individual current-sharing resistors (0.1Ω, 1W, 1% tolerance) in series with each anode, and mount both on a shared, thermally balanced copper island. Better yet, select a single higher-current diode like the SR54L (4A, 40V) or SB540 (5A, 40V) to eliminate imbalance risks entirely. Always test under worst-case ambient temperature and airflow.
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SR34_R1_00001 CAD Models
Panjit International Inc. SR34_R1_00001 PCB symbols & footprints
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