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onsemi 1N5340B
- Part No.:
- 1N5340B
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5340B.pdf
- Description:
- DIODE ZENER 6V 5W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,524
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Product details
Overview
1N5340B from onsemi is a 5 W axial-lead Zener diode with nominal zener voltage of 6.0 V, ±5% tolerance, 200 Ω maximum zener impedance at 1 mA test current, and 12.7 V maximum reverse leakage voltage. It delivers stable voltage regulation in DC power supply rails, overvoltage protection circuits, and reference voltage generation for analog signal conditioning in industrial control modules.
For engineers reviewing the 1N5340B datasheet, pinout, applications, or equivalent options, key selection criteria include its 6.0 V nominal zener voltage, 1 A maximum surge current rating at 8.3 ms, 25 °C/W junction-to-lead thermal resistance, and Pb-free Surmetic 40 plastic package compatibility with wave and reflow soldering.
Technical Context
The 1N5340B operates as a silicon-oxide passivated junction Zener regulator, optimized for steady-state and transient voltage clamping in low-to-medium power linear supplies. Its design supports precise 6.0 V regulation across temperature via tight ±5% initial tolerance and controlled temperature coefficient behavior in the 6 V range.
It features Class 3 ESD immunity (>16 kV HBM), 180 W non-repetitive surge capability at 8.3 ms, and guaranteed limits on six electrical parameters including VZ, IZM, ZZT, ZZK, IR, and VR. The device is rated for operation from −65 °C to +200 °C, with DC max junction temperature limited to 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 6.0 V - precise regulation point for 5–6 V logic supply references and bias networks |
| Zener Voltage Range | 5.70–6.30 V - ±5% tolerance ensures predictable clamping threshold in production |
| Zener Impedance | 200 Ω max @ 1 mA - low dynamic resistance maintains regulation accuracy under load variation |
| Max Surge Current | 1 A @ 8.3 ms - withstands common AC line transients and inductive switch-off spikes |
| Power Dissipation | 5 W @ TL = 25 °C - enables robust operation in compact heatsinkless designs with 3/8″ lead length |
| Junction-to-Lead RθJL | 25 °C/W - defines thermal path efficiency for lead-mounted thermal management |
| Reverse Leakage | 0.19 mA @ 12.7 V - minimal standby current preserves efficiency in always-on protection circuits |
Pinout & Package
Package: Axial-lead Surmetic 40 plastic case (JEDEC CASE 017AA), void-free transfer-molded thermosetting material, cathode indicated by band. Dimensions: 8.38–8.89 mm body length × 3.30–3.68 mm diameter, 25.4–31.75 mm lead length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side of regulated circuit; establishes reference ground for shunt regulation |
| Cathode | Zener breakdown terminal / voltage clamp input | Connected to higher-potential rail; conducts when voltage exceeds 6.0 V, diverting excess current to ground |
Key Features
| Feature | Design Value |
|---|---|
| Silicon-oxide passivated junction | Enables stable long-term VZ drift performance and high reliability in humid or corrosive environments |
| Class 3 ESD rating (>16 kV HBM) | Eliminates need for external ESD protection in board-level handling and end-use applications |
| Surge rating up to 180 W @ 8.3 ms | Provides single-event transient immunity without derating or parallel clamping devices |
| Pb-free Surmetic 40 package | Complies with RoHS and JEDEC J-STD-020 reflow profiles; compatible with automated assembly |
| Guaranteed six-parameter limits | Reduces incoming inspection burden and eliminates post-manufacturing binning for critical designs |
Applications
| Industrial Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Regulating auxiliary 5.5–6.5 V rail in programmable logic controller (PLC) power stage. IC Role / Device Role / Timing Role: Shunt voltage regulator maintaining stable reference for LDO input and microcontroller reset circuitry. Use Value: Delivers ±5% output stability over −40 °C to +85 °C ambient with no active feedback loop required. | Use Scenario: Clamping transient surges on 12 V automotive sensor interface lines exposed to load dump. IC Role / Device Role / Timing Role: Passive overvoltage clamp limiting peak voltage to 12.7 V during 8.3 ms pulses. Use Value: Absorbs up to 180 W surge energy without failure, protecting downstream CAN transceivers and ADC inputs. |
| Reference Voltage Generator | DC Bias Network Stabilizer |
Use Scenario: Providing precision 6.0 V reference for 12-bit analog front-end in industrial temperature transmitter. IC Role / Device Role / Timing Role: Low-drift voltage source feeding op-amp non-inverting input in ratiometric sensor excitation circuit. Use Value: Maintains <2 mV/°C tempco in 5–10 V range, enabling sub-0.1% full-scale accuracy over operating temperature. | Use Scenario: Stabilizing base bias voltage for PNP transistor driver in motor control H-bridge gate circuit. IC Role / Device Role / Timing Role: Zener shunt element fixing emitter voltage to ensure consistent transistor turn-on threshold. Use Value: Limits bias drift to <±30 mV across 0–70 °C, preventing shoot-through and improving PWM fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5340 | Same 6.0 V nominal VZ, but ±10% tolerance (vs. ±5% for 1N5340B); no guaranteed six-parameter limits | Acceptable where tighter regulation not required; higher VZ spread increases risk of out-of-spec operation in precision references | Select 1N5340 only for cost-sensitive, non-critical clamping where ±10% VZ variation is acceptable |
| MMBZ5234B | Surface-mount SOT-23 package; same 6.0 V nominal VZ and ±5% tolerance; lower 0.5 W power rating | Used in space-constrained PCBs; unsuitable for >500 mW continuous dissipation or surge-heavy environments | Choose MMBZ5234B only for low-power, high-density layouts where axial leads are impractical |
Compared with 1N5340 and MMBZ5234B, the 1N5340B offers superior surge resilience (180 W vs. ≤10 W), higher power handling (5 W vs. 0.5 W), and tighter parametric guarantees-making it the preferred choice for industrial-grade voltage regulation where reliability under stress is mandatory.
Availability
1N5340B is available at Aetrix Electronics and suitable for industrial power supply regulation, overvoltage protection circuits, reference voltage generation, and DC bias network stabilization requiring stable component supply across extended temperature ranges and high-surge environments.
Supply support for 1N5340B 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
onsemi (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The 1N53 Series belongs to onsemi's legacy Zener regulator product line, engineered specifically for ruggedized, high-reliability voltage reference and clamping in harsh-environment power systems where long-term stability and surge survivability are critical.
FAQ
What is the nominal zener voltage and tolerance of the 1N5340B?
The 1N5340B has a nominal zener voltage of 6.0 V with a guaranteed tolerance of ±5%, meaning its actual zener voltage falls between 5.70 V and 6.30 V at 1 mA test current. This tight tolerance is specified per JEDEC standards and confirmed in onsemi's Rev. 19 datasheet. The 1N5340B achieves this consistency through silicon-oxide passivated junction technology and 100% electrical screening across six parameters.
Can the 1N5340B be used in surface-mount designs?
No, the 1N5340B is an axial-lead device housed in the Surmetic 40 plastic package (JEDEC CASE 017AA) and is not compatible with surface-mount assembly processes. For SMT alternatives with identical 6.0 V regulation, consider the MMBZ5234B (SOT-23) or NZ9F6V0T5G (SOD-923), though both have lower power ratings. The 1N5340B requires through-hole mounting with 3/8″ lead length for thermal compliance.
What is the maximum surge current rating for the 1N5340B and under what conditions?
The 1N5340B is rated for a maximum non-repetitive surge current of 1 A at a pulse width of 8.3 ms, corresponding to 180 W peak power. This rating assumes TA = 25 °C and proper lead mounting per datasheet Note 4. The surge capability is validated per Figure 5 in the onsemi datasheet and applies only to single-event transients-not repetitive or sustained overload conditions.
How does the 1N5340B's zener impedance affect its regulation performance?
With a maximum zener impedance (ZZT) of 200 Ω at 1 mA test current, the 1N5340B exhibits low dynamic resistance, ensuring minimal output voltage deviation under varying load currents. This value directly determines regulation error: for example, a 10 mA change in zener current causes ≤2 V shift in VZ. Lower ZZT improves stability in precision reference applications compared to higher-impedance Zeners like the 1N4735A (15 Ω at 20 mA but 500 Ω at 1 mA).
Is the 1N5340B RoHS-compliant and what packaging options are available?
Yes, the 1N5340B is RoHS-compliant and offered exclusively in Pb-free packaging, denoted by the "G" suffix (e.g., 1N5340BG). It ships in 1000-unit boxes or 4000-unit tape-and-reel formats. The Surmetic 40 plastic case meets JEDEC moisture sensitivity level (MSL) 1 requirements and is qualified for standard reflow and wave soldering per onsemi's Soldering and Mounting Techniques Reference Manual.
1N5340B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 6 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 1 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 3 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1 A
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
1N5340B FAQ
1.How can I place an order for 1N5340B through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5340B 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 1N5340B reliable?
The price and inventory of 1N5340B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5340B is usually 5 days.
3.What payment methods are accepted for 1N5340B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5340B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5340B?
1N5340B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5340B 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 1N5340B?
For technical support, including 1N5340B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5340B requirements.
6.How does Aetrix verify that 1N5340B is sourced from the original manufacturer or authorized distributors?
All 1N5340B 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 1N5340B meets industry standards.
7.What is the process for return or replacement of 1N5340B?
All 1N5340B units undergo pre-shipment inspection (PSI). If there is an issue with 1N5340B, 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 1N5340B part is unused and in its original packaging.
Return procedure for 1N5340B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5340B Tags
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MM5Z5V1ST1G
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