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Diodes Incorporated BZX84C13W-7
- Part No.:
- BZX84C13W-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84C13W-7.pdf
- Description:
- DIODE ZENER 13V 200MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:2,683
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Product details
Overview
BZX84C13W-7 from Diodes Incorporated is a 13 V, 200 mW surface-mount Zener diode in SOT-323 package, rated for 5 mA test current with 12.4–14.1 V zener voltage tolerance, 30 Ω maximum zener impedance at IZT, and ±0.1 µA maximum reverse leakage at 8.0 V. It provides precision voltage regulation in low-power biasing and reference circuits.
For engineers reviewing the BZX84C13W-7 datasheet, BZX84C13W-7 pinout, BZX84C13W-7 application, or BZX84C13W-7 equivalent, key selection criteria include zener voltage tolerance (±0.8 V), thermal resistance (625 K/W), operating temperature range (−65 to +125 °C), RoHS-compliant lead-free plating, and SOT-323 footprint compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load or supply conditions. Its planar die construction ensures consistent breakdown characteristics and low dynamic impedance (30 Ω @ 5 mA).
The device exhibits a positive temperature coefficient of +7.0 to +11.0 mV/°C at 5 mA, enabling predictable drift behavior in temperature-sensitive references. It is rated for 200 mW power dissipation on FR4 board with recommended pad layout and derates linearly above 25 °C ambient per the published curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13.0 V nominal, 12.4–14.1 V min/max at 5 mA - defines regulated output voltage window under standard test conditions |
| Power Dissipation (PD) | 200 mW - maximum continuous power handling on FR4 board with specified pad layout |
| Zener Impedance (ZZT) | 30 Ω max @ 5 mA - indicates voltage stability under small-signal AC variations |
| Reverse Leakage (IR) | 0.1 µA max @ 8.0 V - ensures minimal quiescent current in standby bias networks |
| Thermal Resistance (RθJA) | 625 K/W - determines junction temperature rise per milliwatt dissipated in still air |
| Temp Coefficient (αVZ) | +7.0 to +11.0 mV/°C @ 5 mA - quantifies voltage drift direction and magnitude over temperature |
Pinout & Package
Package: SOT-323 - ultra-small surface-mount plastic case (2.0 × 1.25 × 0.9 mm), UL 94V-0 rated, moisture sensitivity level 1, lead-free matte tin plating over Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward conduction terminal / cathode reference ground point in reverse-bias configuration | Connected to lower-potential node when used as shunt regulator; polarity must match schematic symbol orientation |
| Cathode (K) | Zener breakdown terminal / regulated output node | Connected to input supply via series resistor; maintains stable voltage relative to anode during reverse conduction |
| Case / Exposed Pad | Non-electrical mechanical termination | No internal connection; serves only structural and thermal interface function; not electrically isolated |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures repeatable breakdown voltage distribution and low parameter spread across production lots |
| SOT-323 ultra-small package | Enables placement in space-constrained designs such as portable sensors and wearables without sacrificing thermal margin |
| Lead-free / RoHS-compliant plating | Meets global environmental compliance requirements without compromising solderability or intermetallic reliability |
| "Green" molding compound | Halogen-free encapsulation material compliant with IPC-4101D and JEDEC J-STD-020D standards |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 13 V reference for analog comparators or ADC voltage dividers in battery-powered instrumentation. IC Role / Device Role / Timing Role: Shunt voltage reference element establishing precise threshold voltage independent of supply variation. Use Value: Maintains ±0.8 V regulation window at 5 mA, enabling <1% error in 12-bit measurement systems. | Use Scenario: Protecting microcontroller I/O pins from transient overvoltage events exceeding 13 V. IC Role / Device Role / Timing Role: Fast-acting clamping diode diverting surge current away from sensitive inputs. Use Value: Limits voltage to ≤14.1 V peak with <0.1 µA leakage below clamp threshold, minimizing standby power impact. |
| Current Source Bias | Temperature-Compensated Reference |
Use Scenario: Generating constant bias current for op-amp input stages using a series resistor and BZX84C13W-7. IC Role / Device Role / Timing Role: Stable voltage node enabling Ohm's law-based current generation (I = (VIN − 13 V)/R). Use Value: Delivers <2% current variation over −40 to +85 °C due to known +7–11 mV/°C TC and tight VZ tolerance. | Use Scenario: Paired with complementary negative-TC diode to build zero-TC reference in precision sensor signal chains. IC Role / Device Role / Timing Role: Positive-temperature-coefficient voltage source enabling cancellation of thermal drift in composite references. Use Value: Enables design of <5 ppm/°C references when combined with −2 mV/°C components, verified in Diodes Inc. AN-2003. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5243B-7-F | Zener voltage 13 V (12.35–13.65 V), 225 mW PD, 30 Ω ZZT, SOT-23 package | Larger footprint; higher power rating but same regulation performance | Select when board layout allows SOT-23 and higher thermal margin is needed |
| BZX84-C13 | Same electrical specs but non-RoHS, SnPb plating; obsolete marking code KP3 without "-W" suffix | Not compliant with current environmental directives; limited lifecycle availability | Avoid for new designs requiring RoHS or long-term supply continuity |
Compared with MMBZ5243B-7-F and BZX84-C13, BZX84C13W-7 offers identical regulation accuracy in a smaller SOT-323 footprint with guaranteed green molding compound and full RoHS compliance-critical for compact, environmentally certified designs.
Availability
BZX84C13W-7 is available at Aetrix Electronics and suitable for power supply reference, overvoltage clamp, and current source bias applications requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.
Supply support for BZX84C13W-7 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, manufacturing, and sales operations across Asia, Europe, and North America.
The BZX84 series belongs to Diodes Inc.'s general-purpose Zener diode product line, engineered specifically for cost-sensitive, space-constrained voltage regulation and protection functions in consumer, industrial, and computing applications.
FAQ
What is the maximum reverse voltage before breakdown for BZX84C13W-7?
The BZX84C13W-7 begins controlled reverse breakdown at 12.4 V (minimum specified zener voltage) and fully regulates up to 14.1 V (maximum) at 5 mA test current. Below 12.4 V, reverse leakage remains ≤0.1 µA at 8.0 V, confirming sharp knee behavior typical of planar Zeners.
Can BZX84C13W-7 be used in parallel for higher current handling?
No-parallel operation is not recommended due to mismatched zener voltage tolerances (±0.8 V) and positive temperature coefficients, which cause current hogging and thermal runaway. For higher current, use a single higher-power Zener or active regulation instead.
Is the SOT-323 package compatible with standard reflow profiles?
Yes-the SOT-323 package supports standard lead-free reflow profiles (J-STD-020D Level 1), with peak temperatures up to 260 °C. Its low mass (0.006 g) and matte tin finish ensure reliable wetting and joint integrity without tombstoning or voiding.
Does BZX84C13W-7 require a series current-limiting resistor in all applications?
Yes-a series resistor is mandatory to limit forward or reverse current to safe levels. For 13 V regulation at 5 mA, a minimum 220 Ω resistor is required with a 14 V supply; calculation must account for worst-case VZ tolerance and ambient temperature derating per the power curve.
BZX84C13W-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 13 V
- Tolerance:
- ±6%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BZX84C13W-7 FAQ
1.How can I place an order for BZX84C13W-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C13W-7 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 BZX84C13W-7 reliable?
The price and inventory of BZX84C13W-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C13W-7 is usually 5 days.
3.What payment methods are accepted for BZX84C13W-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C13W-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C13W-7?
BZX84C13W-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C13W-7 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 BZX84C13W-7?
For technical support, including BZX84C13W-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C13W-7 requirements.
6.How does Aetrix verify that BZX84C13W-7 is sourced from the original manufacturer or authorized distributors?
All BZX84C13W-7 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 BZX84C13W-7 meets industry standards.
7.What is the process for return or replacement of BZX84C13W-7?
All BZX84C13W-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C13W-7, 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 BZX84C13W-7 part is unused and in its original packaging.
Return procedure for BZX84C13W-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C13W-7 Tags
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Diodes Incorporated
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