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Microchip Technology 1N5916BUR-1/TR
- Part No.:
- 1N5916BUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AB, MELF (Glass)
- Datasheet:
-
1N5916BUR-1/TR.pdf
- Description:
- DIODE ZENER 4.3V 1.25W DO213AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,413
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Product details
Overview
1N5916BUR-1 from Microsemi is a 1.5 W surface-mount Zener diode in DO-213AB (MELF) glass package, rated for 4.3 V ±5% Zener voltage at 87.2 mA test current, with 6.0 Ω dynamic impedance, 1.0 µA reverse leakage at 1.0 V, and 348 mA maximum Zener current. It serves voltage regulation in high-density power supply rails and precision reference circuits.
For engineers reviewing the 1N5916BUR-1 datasheet, 1N5916BUR-1 pinout, 1N5916BUR-1 application, or 1N5916BUR-1 equivalent, key selection criteria include Zener tolerance (±5%), hermetic glass construction, MIL-PRF-19500 screening availability, low thermal resistance (RθJEC = 40 °C/W), and ESD immunity per MIL-STD-750 Method 1020.
Technical Context
This device operates as a two-terminal voltage reference in reverse-biased breakdown mode, with specified knee current (IZK = 1.0 mA) and regulated impedance (ZZK = 500 Ω) near onset of conduction. Its metallurgically bonded tungsten slugs and voidless glass seal ensure stable parametric performance across -65 °C to +175 °C junction temperature range.
The 1N5916BUR-1 delivers stable regulation under varying load and temperature due to its low Zener voltage temperature coefficient (not explicitly listed but consistent with 4.3 V family behavior), hermetic capacitance control (see Figure 2), and radiation-hardened structure per MicroNote 050 - making it suitable for aerospace and industrial systems requiring long-term reliability without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.3 V ±5% at IZT = 87.2 mA - defines nominal regulation point with tight tolerance for stable reference generation |
| Power Dissipation | 1.5 W @ TEC ≤ 115 °C - supports continuous operation in compact layouts with end-cap heatsinking |
| Dynamic Impedance (ZZT) | 6.0 Ω - ensures minimal output voltage variation under changing load current |
| Reverse Leakage (IR) | 5.0 µA max at VR = 1.0 V - guarantees low standby power loss in bias networks |
| Thermal Resistance (RθJEC) | 40 °C/W - enables efficient heat transfer from junction to end cap in MELF package |
| Forward Voltage (VF) | 1.2 V max @ IF = 200 mA - confirms low-loss forward conduction during transient clamping or polarity protection |
| Junction Temperature Range | -65 °C to +175 °C - supports operation in extended-environment industrial and aerospace applications |
Pinout & Package
DO-213AB (MELF) glass package: cylindrical hermetically sealed body with metallurgically bonded tungsten slugs; cathode indicated by single band; tin/lead or RoHS-compliant matte tin plating; weight ≈ 0.05 g; dimensions BD = 2.39–2.67 mm, BL = 4.80–5.21 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive terminal in forward bias; negative terminal in Zener regulation | Connected to lower-potential node during voltage regulation; must be held ≤ (cathode voltage − 4.3 V) to maintain breakdown |
| Cathode | Negative terminal in forward bias; positive terminal in Zener regulation | Marked with band; connected to higher-potential rail; carries full Zener current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Eliminates moisture ingress and parameter drift over time; supports >20-year field life in harsh environments |
| Metallurgically enhanced internal contacts | Reduces interfacial thermal resistance and improves power cycling endurance vs standard wire-bonded Zeners |
| MIL-PRF-19500 screening option | Enables qualification for military/aerospace programs requiring lot traceability, burn-in, and parametric stability testing |
| ESD immunity (MIL-STD-750 Method 1020) | Withstands human-body-model ESD events without parameter shift - critical for handling in automated SMT lines |
| Low capacitance profile | Capacitance optimized per Zener voltage (see Figure 2); 4.3 V variant exhibits <2 pF typical - preserves high-frequency signal integrity |
Applications
| Industrial Power Supply Regulation | Avionics Reference Voltage Generation |
|---|---|
Use Scenario: Stabilizing +5 V auxiliary rail in programmable logic controller (PLC) backplane power distribution. IC Role / Device Role / Timing Role: Two-terminal shunt regulator maintaining precise 4.3 V reference for ADC biasing and op-amp level-shifting. Use Value: Tight ±5% VZ tolerance and low 6.0 Ω ZZT minimize output deviation across 10–100 mA load range and -40 °C to +85 °C ambient. |
Use Scenario: Providing primary reference for analog sensor conditioning circuitry in flight control computer modules. IC Role / Device Role / Timing Role: Hermetic Zener reference source operating in uncontrolled thermal zones with no active cooling. Use Value: Radiation hardness per MicroNote 050 and -65 °C to +175 °C TJ rating ensure functional integrity during extended mission profiles. |
| Test Equipment Calibration Circuit | High-Density Telecom DC-DC Feedback Network |
Use Scenario: Serving as secondary voltage standard in portable multimeter auto-ranging front-end. IC Role / Device Role / Timing Role: Precision shunt element in feedback path of adjustable reference amplifier stage. Use Value: Low 1.0 µA IR at 1.0 V and stable VZ over time reduce calibration drift and extend recalibration intervals. |
Use Scenario: Regulating feedback node in isolated 48 V to 3.3 V flyback converter for 5G baseband processing unit. IC Role / Device Role / Timing Role: Compact, low-parasitic Zener clamp on optocoupler input side to stabilize TL431 reference voltage. Use Value: DO-213AB MELF footprint minimizes PCB area vs axial DO-41; hermetic seal prevents humidity-induced VZ hysteresis in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5916BRLG | Same Zener voltage (4.3 V), ±5% tolerance, and DO-213AB package; RoHS-compliant matte tin plating vs Pb/Sn in 1N5916BUR-1 | No MIL-PRF-19500 screening option; intended for commercial-grade industrial use only | Select when RoHS compliance is mandatory and military screening is unnecessary |
| SMBG5916B | Same electrical specs but in SMB (DO-214AA) tabbed SMT package; RθJA = 100 °C/W vs 120 °C/W for 1N5916BUR-1 on FR4 | Higher thermal mass and different pad layout; not interchangeable without board redesign | Select when board space allows larger footprint and higher power dissipation margin is needed |
Compared with 1N5916BRLG and SMBG5916B, the 1N5916BUR-1 uniquely combines hermetic MELF packaging, MIL-PRF-19500 screening capability, and lowest-profile SMT Zener form factor - making it optimal for high-reliability, space-constrained, and thermally demanding applications where long-term parametric stability is non-negotiable.
Availability
1N5916BUR-1 is available at Aetrix Electronics and suitable for industrial power supply regulation, avionics reference voltage generation, and test equipment calibration circuits requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for 1N5916BUR-1 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
Microsemi Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, RF, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N5916BUR-1 belongs to Microsemi's legacy 1N59xxBUR-1 Zener series designed specifically for high-density, high-reliability surface-mount voltage regulation - emphasizing hermetic sealing, metallurgical bond integrity, and MIL-spec screening readiness.
FAQ
What is the Zener voltage tolerance for the 1N5916BUR-1?
The 1N5916BUR-1 has a Zener voltage tolerance of ±5%, specified at 4.3 V with 87.2 mA test current (IZT). This tolerance is confirmed in the Electrical Characteristics table on page 3 of the T4-LDS-0300-1 datasheet and applies to all units meeting the 'B' tolerance designation in the part nomenclature. The 1N5916BUR-1 maintains this tolerance across its rated junction temperature range.
Is the 1N5916BUR-1 RoHS compliant?
The 1N5916BUR-1 is not RoHS compliant by default; its standard termination is tin/lead (SnPb). RoHS-compliant versions are available under alternate part numbers such as 1N5916BRLG (with 'e3' suffix indicating matte tin plating). The 'UR' in 1N5916BUR-1 denotes metallurgically bonded MELF construction, not RoHS status - confirmation requires checking the specific suffix and ordering documentation for the 1N5916BUR-1.
Can the 1N5916BUR-1 be used in place of the axial-leaded 1N5916B?
Yes - the 1N5916BUR-1 is explicitly described as the surface-mount equivalent of the JEDEC-registered 1N5916B axial-leaded Zener diode, sharing identical electrical characteristics including 4.3 V Zener voltage, 6.0 Ω ZZT, and 348 mA IZM. However, mechanical replacement requires PCB redesign due to DO-213AB MELF vs DO-41 package differences; it is functionally equivalent but not mechanically drop-in.
What is the maximum steady-state power dissipation for the 1N5916BUR-1?
The 1N5916BUR-1 has a steady-state power dissipation rating of 1.5 W when the end cap temperature (TEC) is maintained at ≤115 °C, and 1.25 W at TA = 25 °C on FR4 board with recommended footprint. These values are listed in the Maximum Ratings table on page 1 of the T4-LDS-0300-1 datasheet and define safe continuous operation limits for the 1N5916BUR-1 under specified thermal conditions.
Does the 1N5916BUR-1 require MIL-PRF-19500 screening to operate reliably?
No - the 1N5916BUR-1 functions reliably in commercial and industrial applications without MIL-PRF-19500 screening. Screening is an optional enhancement available per source control drawing (SCD) and adds tests like burn-in, parametric verification, and lot traceability. The base 1N5916BUR-1 already features hermetic glass sealing, metallurgical bonding, and ESD immunity - all contributing to inherent reliability independent of screening.
1N5916BUR-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AB, MELF (Glass)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 4.3 V
- Tolerance:
- ±5%
- Power - Max:
- 1.25 W
- Impedance (Max) (Zzt):
- 6 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AB (MELF, LL41)
1N5916BUR-1/TR FAQ
1.How can I place an order for 1N5916BUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5916BUR-1/TR 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 1N5916BUR-1/TR reliable?
The price and inventory of 1N5916BUR-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5916BUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N5916BUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5916BUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5916BUR-1/TR?
1N5916BUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5916BUR-1/TR 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 1N5916BUR-1/TR?
For technical support, including 1N5916BUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5916BUR-1/TR requirements.
6.How does Aetrix verify that 1N5916BUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N5916BUR-1/TR 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 1N5916BUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N5916BUR-1/TR?
All 1N5916BUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5916BUR-1/TR, 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 1N5916BUR-1/TR part is unused and in its original packaging.
Return procedure for 1N5916BUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5916BUR-1/TR Tags
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