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Diodes Incorporated 1SMB5913B-13
- Part No.:
- 1SMB5913B-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
1SMB5913B-13.pdf
- Description:
- DIODE ZENER 3.3V 550MW SMB
- Quantity:
- Payment:
- Shipping:
Inventory:3,219
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Product details
Overview
1SMB5913B-13 from Diodes Incorporated is a 3.0W surface-mount power Zener diode with nominal zener voltage 3.3V (±5%), 113.6mA maximum zener current, 10Ω typical zener impedance at 113.6mA, and ESD rating >16kV HBM. It serves as a precision voltage reference and overvoltage clamp in DC power rail regulation circuits.
For engineers reviewing the 1SMB5913B-13 datasheet, 1SMB5913B-13 pinout, 1SMB5913B-13 application, or 1SMB5913B-13 equivalent, key selection criteria include zener voltage tolerance, thermal resistance (226°C/W), power derating above +25°C, and SMB package compatibility with automated SMT assembly.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across load variations and line transients. Its 3.3V nominal zener voltage places it in the low-voltage regulation range where temperature coefficient is negative and typically −5 mV/°C.
The device uses a planar epitaxial construction with copper alloy leadframe and matte tin plating, enabling solderability per MIL-STD-202 Method 208 and moisture sensitivity level 1 compliance. Thermal performance is specified for FR-4 PCB mounting with Diodes Inc.'s AP02001 pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.3V nominal, ±5% tolerance (3.13–3.47V) - ensures tight regulation in 3.3V supply monitoring and clamping. |
| Power Dissipation (PD) | 3.0W @ TL = +75°C - supports sustained clamping in high-energy transient events on power rails. |
| Zener Impedance (ZZT) | 10Ω @ IZT = 113.6mA - low dynamic impedance maintains voltage stability under fast load-current changes. |
| Thermal Resistance (RθJA) | 226°C/W - defines junction-to-ambient temperature rise under 550mW operation at +25°C ambient. |
| ESD Rating | Class 3 (>16kV) per HBM - protects downstream circuitry during handling and board-level electrostatic discharge events. |
| Reverse Leakage (IR) | 100µA @ VR = 1V - confirms low off-state conduction critical for standby power integrity. |
| Forward Voltage (VF) | 1.5V @ IF = 200mA - enables use as a low-drop rectifier or polarity protection element when forward-biased. |
Pinout & Package
Package: SMB (Surface Mount Body), molded plastic case per UL 94V-0, cathode indicated by band. Dimensions: 4.30mm × 2.30mm × 1.80mm (L×W×H), weight ≈0.096g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; reference node in reverse-bias regulation | Connected to lower-potential side of regulated node; determines polarity of clamping action. |
| Cathode | Current exit terminal in forward bias; zener breakdown terminal in reverse bias | Marked with band; connected to higher-potential rail to enable voltage clamping at 3.3V. |
Key Features
| Feature | Design Value |
|---|---|
| 3.0W Power Handling | Enables robust transient suppression in 12V/24V industrial power supplies without external heatsinking. |
| ±5% Zener Tolerance | Reduces need for post-assembly calibration in voltage reference circuits for ADC references or supervisor ICs. |
| SMB Package with Level 1 MSL | Supports reflow soldering without baking; compatible with high-throughput pick-and-place equipment. |
| Lead-Free & Halogen-Free | Meets RoHS 2 and JEDEC J-STD-020 requirements for green electronics manufacturing and export compliance. |
| 16kV HBM ESD Robustness | Eliminates need for additional ESD protection components in USB, GPIO, or sensor interface lines. |
Applications
| Industrial Power Monitoring | Automotive Body Control Module |
|---|---|
|
Use Scenario: Monitoring 3.3V microcontroller supply rail for brown-out detection. IC Role / Device Role / Timing Role: Precision voltage reference for reset supervisor IC input. Use Value: ±5% VZ tolerance ensures reliable reset assertion within 3.0–3.6V window without trimming. |
Use Scenario: Clamping CAN transceiver VCC rail against load-dump transients. IC Role / Device Role / Timing Role: Overvoltage protection element shunting surge energy to ground. Use Value: 3.0W dissipation handles 100ms 12V–14V surges without degradation per ISO 7637-2 Pulse 5a. |
| Medical Sensor Signal Conditioning | Consumer IoT Battery Management |
|
Use Scenario: Biasing op-amp input stage in low-noise analog front-end for ECG amplifier. IC Role / Device Role / Timing Role: Low-noise voltage reference stabilizing common-mode voltage. Use Value: 10Ω ZZT minimizes noise injection into high-gain signal path at DC–10kHz bandwidth. |
Use Scenario: Regulating charging voltage reference for Li-ion battery fuel gauge IC. IC Role / Device Role / Timing Role: Stable reference source for ADC measurement of cell voltage. Use Value: 226°C/W RθJA allows operation up to +85°C ambient without derating in compact wearable PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C3V3 | 250mW power rating, SOT-23 package, 3.3V ±5%, ZZT = 95Ω @ 5mA | Lower power handling limits use to signal-level clamping; unsuitable for rail-level surge suppression. | Select when space-constrained PCBs require SOT-23 footprint and only 5mA test current is needed. |
| 1N5333B | 5W power rating, DO-204AL package, 3.3V ±5%, ZZT = 0.5Ω @ 380mA, RθJA = 20°C/W | Through-hole mounting and higher thermal mass support continuous 5W dissipation but require manual assembly. | Select when system-level reliability demands higher surge margin and board layout permits axial/DO-204AL placement. |
Compared with BZX84-C3V3 and 1N5333B, the 1SMB5913B-13 uniquely balances 3.0W SMT power handling, SMB footprint compatibility, and 10Ω low-impedance regulation-making it optimal for automated production of mid-power industrial and automotive control modules.
Availability
1SMB5913B-13 is available at Aetrix Electronics and suitable for industrial power monitoring, automotive body control modules, medical sensor signal conditioning, and consumer IoT battery management requiring stable component supply across extended temperature ranges and high-volume production cycles.
Supply support for 1SMB5913B-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 and manufacturing operations across Asia and the Americas.
This part belongs to the 1SMB59xxB series of 3.0W surface-mount Zener diodes engineered for precision voltage regulation and transient suppression in space-constrained, high-reliability power systems.
FAQ
What is the maximum continuous zener current for 1SMB5913B-13 at +75°C?
The maximum zener current is calculated as PD/VZ = 3.0W / 3.3V ≈ 909mA at TL = +75°C. However, the datasheet specifies IZM = 113.6mA at TA = +25°C using the standard test condition; actual continuous current must be reduced per thermal derating curves in Figure 6 to avoid exceeding 150°C junction temperature.
Can 1SMB5913B-13 be used in place of a 3.3V TVS diode for ESD protection?
No - while it has >16kV HBM ESD rating, its 3.0W power rating and 10Ω impedance are optimized for steady-state regulation, not fast transient suppression. A dedicated TVS like SMBJ3.3A offers sub-nanosecond response and 600W peak pulse power, making it appropriate for IEC 61000-4-2 ESD protection.
Does the SMB package support reflow soldering per JEDEC J-STD-020?
Yes - the device is rated Moisture Sensitivity Level 1, meaning it can be stored indefinitely at ≤30°C/60% RH and subjected to standard Pb-free reflow profiles (peak 260°C) without baking or special handling, per J-STD-020 Rev D.
How does temperature affect the 3.3V zener voltage of this diode?
At 3.3V, the zener exhibits a negative temperature coefficient of approximately −5 mV/°C (per Figure 2). This means VZ decreases by ~5mV per °C rise in junction temperature - a critical factor when designing precision references operating across −40°C to +125°C ambient ranges.
1SMB5913B-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 3.3 V
- Tolerance:
- ±5%
- Power - Max:
- 550 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 100 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
1SMB5913B-13 FAQ
1.How can I place an order for 1SMB5913B-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1SMB5913B-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 1SMB5913B-13 reliable?
The price and inventory of 1SMB5913B-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1SMB5913B-13 is usually 5 days.
3.What payment methods are accepted for 1SMB5913B-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1SMB5913B-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1SMB5913B-13?
1SMB5913B-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1SMB5913B-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 1SMB5913B-13?
For technical support, including 1SMB5913B-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1SMB5913B-13 requirements.
6.How does Aetrix verify that 1SMB5913B-13 is sourced from the original manufacturer or authorized distributors?
All 1SMB5913B-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 1SMB5913B-13 meets industry standards.
7.What is the process for return or replacement of 1SMB5913B-13?
All 1SMB5913B-13 units undergo pre-shipment inspection (PSI). If there is an issue with 1SMB5913B-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 1SMB5913B-13 part is unused and in its original packaging.
Return procedure for 1SMB5913B-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1SMB5913B-13 Tags
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