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onsemi 1N6004B
- Part No.:
- 1N6004B
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N6004B.pdf
- Description:
- DIODE ZENER 15V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:6,600
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Product details
Overview
1N6004B from Fairchild Semiconductor is a 15 V ±5% Zener diode in DO-35 glass package, rated for 500 mW power dissipation at TL ≤ 75°C with 4.0 mW/°C derating, 32 mA maximum Zener current (IZM), and 600 Ω dynamic impedance (ZZ) at 5 mA test current - used for precision voltage regulation in low-power analog reference and overvoltage clamp circuits.
For engineers reviewing the 1N6004B datasheet, pinout, applications, or equivalent options, key selection criteria include its 15 V nominal Zener voltage, tight 5% tolerance, DO-35 axial leaded package, low leakage current (0.1 mA at 11 V reverse), and thermal stability across –65°C to +200°C operating range.
Technical Context
The 1N6004B operates as a silicon planar Zener diode with controlled avalanche breakdown at 15 V, specified under thermal equilibrium conditions at 30°C ±1°C lead temperature and 3/8″ lead length. Its Zener voltage is defined at 5 mA test current (IZ), with dynamic impedance measured at that same bias point.
It exhibits 600 Ω Zener impedance (ZZ) at IZ = 5 mA and 600 Ω knee impedance (ZZK) at IZK = 250 μA, with reverse leakage current limited to 0.1 mA at VR = 11 V - confirming stable regulation performance in low-current reference designs where thermal drift and noise must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.25–15.75 V @ 5 mA - defines precise clamping threshold for 15 V rail stabilization |
| Power Dissipation (PD) | 500 mW @ TL ≤ 75°C - sets maximum continuous power handling in standard PCB mounting |
| Zener Impedance (ZZ) | 600 Ω @ IZ = 5 mA - indicates moderate AC impedance affecting regulation accuracy under varying load |
| Max Zener Current (IZM) | 32 mA - determines absolute upper DC current limit before thermal runaway risk |
| Reverse Leakage (IR) | 0.1 mA @ VR = 11 V - ensures minimal parasitic current in standby or high-impedance sensing nodes |
| Operating Temp Range | –65°C to +200°C - supports deployment in automotive under-hood and industrial high-temp environments |
Pinout & Package
DO-35 glass axial-leaded package with cathode indicated by color band; two-terminal device requiring no orientation-specific PCB footprint beyond standard 0.4" lead spacing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node when used in reverse-bias regulation |
| Cathode | Zener breakdown terminal / regulated output node | Provides stable 15 V reference when reverse-biased above breakdown; marked by color band |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables accurate 15 V reference without post-production trimming in cost-sensitive analog circuits |
| DO-35 glass package | Provides hermetic sealing and stable long-term parameter drift for reliability-critical applications |
| Low 0.1 mA leakage at 11 V | Minimizes error current in high-impedance voltage divider or sensor bias networks |
| 600 Ω dynamic impedance | Delivers predictable regulation deviation under ±1 mA load variation around 5 mA nominal bias |
| –65°C to +200°C operation | Supports direct placement near heat sources (e.g., power MOSFETs) without derating penalties |
Applications
| Voltage Reference for ADC/DAC | Overvoltage Clamp in Sensor Interface |
|---|---|
Use Scenario: Provides stable 15 V reference for 12-bit SAR ADC input scaling and DAC output buffering in industrial data acquisition modules. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to generate fixed reference potential independent of supply ripple. Use Value: Tight 5% VZ tolerance and low ZZ ensure <±0.5 LSB reference error across temperature and line variations. |
Use Scenario: Clamps transient spikes on 12 V sensor supply lines (e.g., automotive pressure sensors) to protect downstream op-amps and microcontroller inputs. IC Role / Device Role / Timing Role: Passive overvoltage protection element absorbing surge energy via controlled avalanche conduction. Use Value: 32 mA IZM rating allows safe dissipation of 480 mW transients without degradation, matching typical ISO 7637-2 pulse 1/2a energy limits. |
| Low-Power Bias Generator | Regulated Supply for Op-Amp Rails |
Use Scenario: Generates clean ±15 V dual-rail supplies for low-noise instrumentation amplifiers using resistor-Zener networks. IC Role / Device Role / Timing Role: Precision voltage source establishing stable bias points for amplifier quiescent current setting. Use Value: 600 Ω ZZ minimizes interaction between bias current changes and reference voltage shift during signal swing. |
Use Scenario: Supplies regulated 15 V to rail-to-rail op-amps in battery-powered portable test equipment with variable input voltage. IC Role / Device Role / Timing Role: Standalone shunt regulator maintaining constant output despite 9–18 V input variation. Use Value: 500 mW PD rating supports up to 33 mA load current at full regulation, sufficient for dual-op-amp stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4744A (ON Semiconductor) | 14 V nominal VZ, ±5%, DO-41 package, 1 W PD, 20 Ω ZZ @ 25 mA | Higher power and lower impedance but requires larger footprint and higher bias current | Select when >33 mA load current or lower dynamic impedance is required; not drop-in due to DO-41 vs DO-35 |
| BZX55-C15 (Vishay) | 15 V nominal VZ, ±5%, DO-35 package, 500 mW PD, 100 Ω ZZ @ 5 mA | Lower ZZ improves regulation accuracy but tighter process control increases cost | Prefer for high-precision references where 100 Ω vs 600 Ω ZZ directly impacts system gain error |
Compared with 1N6004B, the 1N4744A offers higher power and lower impedance but demands different layout and biasing, while the BZX55-C15 matches the DO-35 form factor and voltage but delivers four times lower dynamic impedance for improved regulation fidelity.
Availability
1N6004B is available at Aetrix Electronics and suitable for voltage reference design, overvoltage protection, low-power bias generation, and op-amp rail regulation requiring stable component supply with consistent parametric performance across production lots.
Supply support for 1N6004B 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
Fairchild Semiconductor was a U.S.-based semiconductor company specializing in power management, analog, and discrete components before its acquisition by ON Semiconductor in 2016; known for robust, industry-standard diodes and MOSFETs.
The 1N6004B belongs to Fairchild's legacy 1N5985B–1N6025B Zener diode family, engineered for general-purpose voltage regulation and clamping in commercial and industrial systems where reliability and parametric consistency are prioritized over ultra-low impedance.
FAQ
What is the nominal Zener voltage and tolerance of the 1N6004B?
The 1N6004B has a nominal Zener voltage of 15 V with a guaranteed tolerance of ±5%, meaning its actual breakdown voltage falls between 14.25 V and 15.75 V when tested at 5 mA. This specification is verified per Fairchild's 1N5985B–1N6025B datasheet Rev. C2 and applies strictly under thermal equilibrium at 30°C ±1°C lead temperature. The 1N6004B maintains this tolerance across its full operating temperature range.
What package type does the 1N6004B use, and how is polarity identified?
The 1N6004B uses a DO-35 glass axial-leaded package with cathode polarity marked by a visible color band on the body. This marking aligns with JEDEC standards and is confirmed in Fairchild's top-mark information table, where the 1N6004B is shown with "LOGO / 00 / 4B" laser marking. The anode and cathode leads are unidirectional, and correct orientation is essential for proper reverse-bias operation in regulation or clamping roles.
What is the maximum Zener current (IZM) and how is it determined for the 1N6004B?
The 1N6004B has a maximum Zener current (IZM) of 32 mA, derived from its 500 mW power rating and nominal 15 V Zener voltage (P = V × I → I = 500 mW / 15 V ≈ 33 mA, rounded down to 32 mA per datasheet). This value is validated under worst-case thermal conditions and accounts for derating above 75°C. Exceeding 32 mA risks thermal instability, making it critical to size series resistors accordingly in all 1N6004B applications.
How does the Zener impedance (ZZ) of the 1N6004B affect regulation performance?
The 1N6004B exhibits 600 Ω Zener impedance (ZZ) measured at 5 mA test current, directly impacting output voltage variation under changing load current. For example, a ±1 mA load shift causes ±0.6 V change in regulated output - a key design constraint in precision references. This value is measured per Fairchild's test condition and distinguishes the 1N6004B from lower-impedance alternatives like the BZX55-C15 (100 Ω), which would yield only ±0.1 V shift for the same load delta.
Can the 1N6004B be used in automotive under-hood applications?
Yes, the 1N6004B supports automotive under-hood use due to its specified operating temperature range of –65°C to +200°C and hermetically sealed DO-35 glass package. Its 0.1 mA leakage at 11 V reverse voltage and stable 5% VZ tolerance across temperature make it suitable for engine control module voltage supervisors and sensor signal conditioning - provided board-level thermal management keeps lead temperature ≤75°C to maintain full 500 mW power rating.
1N6004B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 32 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 11 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
1N6004B FAQ
1.How can I place an order for 1N6004B through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6004B 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 1N6004B reliable?
The price and inventory of 1N6004B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6004B is usually 5 days.
3.What payment methods are accepted for 1N6004B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6004B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6004B?
1N6004B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6004B 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 1N6004B?
For technical support, including 1N6004B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6004B requirements.
6.How does Aetrix verify that 1N6004B is sourced from the original manufacturer or authorized distributors?
All 1N6004B 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 1N6004B meets industry standards.
7.What is the process for return or replacement of 1N6004B?
All 1N6004B units undergo pre-shipment inspection (PSI). If there is an issue with 1N6004B, 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 1N6004B part is unused and in its original packaging.
Return procedure for 1N6004B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6004B Tags
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