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Taiwan Semiconductor Corporation BZX585B13
- Part No.:
- BZX585B13
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585B13.pdf
- Description:
- DIODE ZENER 13V 200MW SOD523F
- Quantity:
- Payment:
- Shipping:
Inventory:6,107
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Product details
Overview
BZX585B13 from Taiwan Semiconductor is a surface-mount Zener diode with nominal zener voltage 13 V, ±2% tolerance, 200 mW power dissipation, and SOD-523F package. It provides precise voltage regulation in low-power signal conditioning, reference, and protection circuits across consumer, industrial, and automotive electronics.
For engineers reviewing the BZX585B13 datasheet, BZX585B13 pinout, BZX585B13 application, or BZX585B13 equivalent, key selection criteria include its 13 V zener voltage at 5 mA test current, 160 Ω dynamic impedance, 0.09 μA reverse leakage at 10 V, temperature coefficient of +7.0 mV/°C, and MSL-1 moisture sensitivity rating for reflow compatibility.
Technical Context
The BZX585B13 operates as a two-terminal voltage reference device, conducting in reverse breakdown to clamp or regulate voltage. Its zener voltage is specified at IZT = 5 mA with 12.74 V minimum and 13.26 V maximum, and it exhibits a positive temperature coefficient (+7.0 mV/°C), indicating increasing VZ with junction temperature.
Thermal resistance RθJA is 680 °C/W, limiting usable ambient temperature range under full power. The device is rated for 150 °C maximum junction temperature and supports high-temperature soldering (260 °C/10 s), confirming suitability for standard lead-free reflow profiles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13 V nominal, 12.74–13.26 V at 5 mA - defines stable regulation point for precision biasing |
| Power Dissipation (PD) | 200 mW - limits continuous reverse power handling in compact SOD-523F footprint |
| Zener Impedance (ZZT) | 160 Ω at 5 mA - indicates moderate AC regulation stability under small-signal conditions |
| Reverse Leakage (IR) | 0.09 μA max at 10 V - ensures minimal quiescent current in high-impedance reference nodes |
| Temperature Coefficient (TC) | +7.0 mV/°C - enables predictable VZ drift compensation in temperature-varying environments |
| Package | SOD-523F - 1.6 × 0.8 mm surface-mount outline with MSL-1 rating for single-reflow assembly |
| RoHS/ELV Compliance | Pb-free, halogen-free per IEC 61249-2-21 - meets global environmental and automotive material requirements |
Pinout & Package
SOD-523F is a two-terminal surface-mount package with anode and cathode marked by polarity band on the cathode end. Dimensions: 1.6 mm × 0.8 mm × 0.6 mm (L × W × H); weight ≈ 1.36 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward conduction terminal | Connected to lower-potential node; conducts forward current when biased >0.7 V |
| Cathode (K) | Zener breakdown terminal | Connected to higher-potential node; regulates voltage when reverse-biased above 13 V |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables tight reference accuracy without post-production trimming in low-cost designs |
| MSL-1 moisture sensitivity | Allows unlimited floor life and single reflow without baking, reducing manufacturing overhead |
| 260°C/10s soldering guarantee | Supports robust lead-free reflow processes without parametric shift or delamination |
| Halogen-free epoxy compound | Meets stringent automotive and industrial material compliance standards (IEC 61249-2-21) |
| Green compound marking | Facilitates visual identification and traceability on assembled PCBs |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
Use Scenario: Providing stable 13 V reference for LDO feedback networks or ADC voltage references in battery-powered IoT sensors. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference, absorbing excess current to maintain regulated node voltage. Use Value: Delivers 13 V ±2% accuracy with <0.1 μA leakage, minimizing loading on high-impedance sensor signal paths. | Use Scenario: Clamping transient surges on 12 V automotive CAN bus lines or industrial I/O ports. IC Role / Device Role / Timing Role: Reverse-biased voltage clamp limiting line voltage to 13.3 V peak during ESD or load-dump events. Use Value: Fast response (<1 ns) and 200 mW surge capability protect downstream transceivers without adding series resistance. |
| Signal Level Shifting | Temperature-Compensated Biasing |
Use Scenario: Biasing op-amp input stages in analog front-ends requiring fixed 13 V common-mode offset. IC Role / Device Role / Timing Role: DC level translator establishing known reference potential for differential signal conditioning. Use Value: Stable 13 V output with +7.0 mV/°C TC allows predictable offset tracking across –40°C to +125°C operating range. | Use Scenario: Compensating base-emitter voltage drift in precision current sources using bipolar transistors. IC Role / Device Role / Timing Role: Zener diode paired with NTC thermistor or complementary transistor to counteract VBE temperature dependence. Use Value: Positive TC (+7.0 mV/°C) offsets typical negative VBE drift (~−2 mV/°C), enabling near-zero net TC bias networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5242BS-7-F | 13 V nominal, ±5% tolerance, 200 mW, SOD-323 package, 170 Ω ZZT, −2.5 mV/°C TC | Negative TC requires opposite compensation strategy; larger SOD-323 footprint increases board area | Select when cost sensitivity outweighs tolerance and TC requirements; verify layout clearance for larger package |
| BZX384-B13 | 13 V nominal, ±2% tolerance, 300 mW, SOD-323 package, 130 Ω ZZT, +7.5 mV/°C TC | Higher power rating allows greater surge margin but requires derating above 75°C ambient | Prefer for higher-reliability transient suppression where 300 mW headroom improves robustness |
Compared with MMBZ5242BS-7-F and BZX384-B13, the BZX585B13 offers tighter tolerance and identical TC sign, while its SOD-523F size saves 35% board area versus SOD-323 alternatives-critical for space-constrained wearables and miniaturized modules.
Availability
BZX585B13 is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, signal level shifting, and temperature-compensated biasing applications requiring stable component supply and RoHS-compliant sourcing.
Supply support for BZX585B13 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete devices, analog ICs, and power management solutions for industrial, automotive, and consumer markets.
The BZX585B13 belongs to TSC's Small Signal Product family, engineered for precision voltage regulation and protection in compact, high-reliability surface-mount applications where thermal stability, tight tolerance, and environmental compliance are critical.
FAQ
What is the zener voltage tolerance of the BZX585B13?
The BZX585B13 has a zener voltage tolerance of ±2% at 5 mA test current, with a guaranteed range of 12.74 V to 13.26 V. This tight tolerance supports precision reference applications without external calibration. The BZX585B13 maintains this specification across its qualified operating temperature range and is verified per Taiwan Semiconductor's C1607 revision testing protocol.
Is the BZX585B13 compatible with lead-free reflow soldering?
Yes, the BZX585B13 is qualified for lead-free reflow soldering at 260°C for 10 seconds, meeting JEDEC J-STD-020 requirements. Its SOD-523F package and halogen-free epoxy ensure reliability under standard Pb-free thermal profiles. The BZX585B13 also carries MSL-1 rating, eliminating the need for pre-baking before assembly.
What is the maximum junction temperature rating for the BZX585B13?
The BZX585B13 has a maximum junction temperature (TJ) rating of 150°C, consistent with its silicon die construction and SOD-523F thermal design. Derating begins above 75°C ambient due to its 680 °C/W junction-to-ambient thermal resistance. The BZX585B13 must be operated within this limit to ensure long-term parametric stability and reliability.
Does the BZX585B13 have a positive or negative temperature coefficient?
The BZX585B13 has a positive temperature coefficient of +7.0 mV/°C at 5 mA, meaning its zener voltage increases linearly with rising junction temperature. This behavior is confirmed in the official electrical characteristics table and supports temperature-compensated circuit designs. The BZX585B13's TC value is measured and specified per Taiwan Semiconductor's C1607 datasheet revision.
What packaging options are available for the BZX585B13?
The BZX585B13 is supplied in 7-inch reels containing 8,000 units (standard packing code RSG). All units use green compound encapsulation and comply with RoHS Directive 2011/65/EU and WEEE 2002/96/EC. The BZX585B13's SOD-523F package dimensions and reel specifications are fully documented in the mechanical data section of the C1607 datasheet.
BZX585B13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 13 V
- Tolerance:
- ±2%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 90 nA @ 8 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523F
BZX585B13 FAQ
1.How can I place an order for BZX585B13 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585B13 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 BZX585B13 reliable?
The price and inventory of BZX585B13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585B13 is usually 5 days.
3.What payment methods are accepted for BZX585B13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585B13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585B13?
BZX585B13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585B13 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 BZX585B13?
For technical support, including BZX585B13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585B13 requirements.
6.How does Aetrix verify that BZX585B13 is sourced from the original manufacturer or authorized distributors?
All BZX585B13 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 BZX585B13 meets industry standards.
7.What is the process for return or replacement of BZX585B13?
All BZX585B13 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585B13, 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 BZX585B13 part is unused and in its original packaging.
Return procedure for BZX585B13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX585B13 Tags
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