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Microchip Technology 1N4608/TR
- Part No.:
- 1N4608/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N4608/TR.pdf
- Description:
- DIODE GEN PURP 85V 200MA DO35
- Quantity:
- Payment:
- Shipping:
Inventory:4,123
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Product details
Overview
1N4608/TR from BKC is a silicon switching diode in DO-35 glass package, rated for 85 V peak inverse voltage, 500 mA continuous forward current, and 10 ns reverse recovery time, used in high-speed rectification and signal clamping circuits.
For engineers reviewing the 1N4608/TR datasheet, 1N4608/TR pinout, 1N4608/TR application, or 1N4608/TR equivalent, key selection criteria include fast switching (trr = 10 ns), low forward voltage (VF ≤ 1.10 V @ 400 mA), controlled leakage (IR ≤ 100 µA @ 50 V), and DO-35 thermal performance (Ptot = 500 mW @ TL = 50 °C).
Technical Context
This diode employs metallurgically bonded construction with Sigma Bond™ plating to ensure reliable solderability and thermal stability across -65 °C to +150 °C operating range. Its fast recovery enables use in high-frequency switching topologies where minimal charge storage is critical.
The DO-35 glass package provides hermetic sealing and consistent junction-to-lead thermal resistance. Electrical behavior is specified at 25 °C with defined test conditions: IF = 400 mA for VF, IR = 25 µA for PIV, VR = 50 V for IR, and trr measured per Method 4031-A (IF = 10 mA, VR = 6 V, RL = 100 Ω).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PIV | 85 V minimum - ensures safe blocking of transient voltages up to this level in clamp or flyback circuits |
| trr | 10 ns - enables operation in switching supplies above 10 MHz without significant recovery loss |
| VF @ 400 mA | ≤1.10 V - limits conduction loss to <440 mW at rated DC forward current |
| IR @ 50 V | ≤100 µA - maintains low standby power in high-impedance bias networks |
| IFdc | 500 mA - supports continuous operation in low-power DC-DC feedback paths and logic-level clamps |
| Ptot @ TL=50°C | 500 mW - defines maximum dissipation with 3/8" lead length, guiding heatsinking in PCB layout |
Pinout & Package
DO-35 glass axial package: cylindrical glass body (Ø 1.53–2.28 mm, L 3.05–5.08 mm), tinned copper alloy leads (Ø 0.458–0.558 mm), hermetically sealed, lead-free compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to higher-potential node during conduction; polarity must be observed in series-switching or clamp configurations |
| Cathode | Forward current exit point / PIV reference | Marked by band on glass body; ties to circuit ground or lower potential to enable reverse-blocking function |
Key Features
| Feature | Design Value |
|---|---|
| Sigma Bond™ plating | Ensures repeatable, void-free solder joints without flux activation issues on OSP or ENIG finishes |
| Metallurgical bond | Provides stable junction integrity under thermal cycling (−65 °C to +150 °C) and mechanical vibration |
| DO-35 hermetic seal | Prevents moisture ingress and parameter drift over 10+ year deployments in industrial environments |
| Six sigma quality | Guarantees ≤3.4 ppm defect rate in forward voltage and leakage screening, reducing field failure risk |
Applications
| High-Speed Logic Clamping | Low-Power Flyback Snubber |
|---|---|
Use Scenario: Protecting TTL/CMOS inputs from overshoot during signal transitions in 10–50 MHz digital systems. IC Role / Device Role / Timing Role: Fast-switching clamp diode shunting transients to rail while preserving signal edge integrity. Use Value: 10 ns trr prevents pulse distortion; 85 V PIV accommodates ±5 V to ±12 V logic swing margins. | Use Scenario: Absorbing leakage inductance energy in 5–24 V output flyback converters below 5 W. IC Role / Device Role / Timing Role: Secondary-side snubber diode conducting brief high-dV/dt spikes during MOSFET turn-off. Use Value: Low IR (≤100 µA) minimizes standby loss; DO-35 package withstands repeated surge pulses up to 1 A. |
| Signal-Level Peak Detection | EMI Filter Feedthrough |
Use Scenario: Capturing RF envelope peaks in AM demodulation or RSSI sensing circuits at 1–100 MHz. IC Role / Device Role / Timing Role: Switching diode acting as half-wave rectifier in passive detector stage before op-amp buffer. Use Value: 1.10 V VF limit ensures accurate low-amplitude detection; fast trr avoids integration lag at >10 MHz. | Use Scenario: Suppressing common-mode noise on low-voltage sensor lines entering shielded enclosures. IC Role / Device Role / Timing Role: Bidirectional ESD/EMI clamp between signal and chassis ground in I/O protection networks. Use Value: Symmetrical breakdown (85 V PIV) and low capacitance (<2 pF typical) preserve signal rise time up to 100 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar silicon switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4148WS | Same DO-35 package; trr = 4 ns (faster), PIV = 100 V, VF = 1.25 V @ 10 mA | Better for >50 MHz signal routing; higher VF reduces efficiency in power-path roles | Choose 1N4148WS when trr < 5 ns is required; verify VF impact in high-current clamps |
| 1N4448 | DO-35; trr = 4 ns, PIV = 75 V, IR = 25 nA @ 20 V (lower leakage) | Preferred in ultra-low-leakage bias networks; insufficient PIV margin for 48 V systems | Select 1N4448 only if PIV ≥ 75 V suffices and IR < 50 nA is mandatory |
Compared with 1N4608/TR, 1N4148WS offers faster switching but higher forward drop, while 1N4448 delivers lower leakage at reduced PIV-neither is pin-compatible without verifying layout clearance and thermal derating.
Availability
1N4608/TR is available at Aetrix Electronics and suitable for high-speed logic clamping, low-power flyback snubbing, and signal-level peak detection requiring stable component supply across industrial control, instrumentation, and communications hardware.
Supply support for 1N4608/TR 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
BKC is a U.S.-based discrete semiconductor manufacturer specializing in high-reliability diodes and rectifiers for industrial and military-grade applications.
The 1N4608/TR belongs to BKC's silicon switching diode product line, engineered for fast transient response and robust thermal performance in space-constrained analog and mixed-signal circuits.
FAQ
What is the maximum reverse voltage rating for the 1N4608/TR?
The 1N4608/TR has a minimum peak inverse voltage (PIV) rating of 85 V, verified at 5 µA leakage current and −55 °C. This value defines the highest repetitive reverse voltage the diode can block without breakdown in normal operation, making it suitable for 48 V system clamping and 24 V flyback snubbers where transient margins exceed 3× nominal rail voltage.
What is the forward voltage drop of the 1N4608/TR at 400 mA?
The 1N4608/TR exhibits a maximum forward voltage drop of 1.10 V when conducting 400 mA DC current at 25 °C. This specification directly determines conduction loss (P = VF × IF ≈ 440 mW), which must be evaluated against the 500 mW total power dissipation limit and thermal environment in the final PCB layout.
How fast is the reverse recovery time of the 1N4608/TR?
The 1N4608/TR has a reverse recovery time (trr) of 10 ns, measured per Method 4031-A (IF = 10 mA, VR = 6 V, RL = 100 Ω). This speed enables reliable operation in switching circuits up to ~10 MHz, including clock signal clamping and low-power SMPS snubbing where stored charge must clear before next cycle.
What package type does the 1N4608/TR use?
The 1N4608/TR uses the DO-35 glass axial package: hermetically sealed cylindrical glass body (diameter 1.53–2.28 mm, length 3.05–5.08 mm) with tinned copper alloy leads (diameter 0.458–0.558 mm). This package provides stable electrical parameters over temperature and long-term reliability in humid or chemically aggressive environments.
What is the operating temperature range of the 1N4608/TR?
The 1N4608/TR operates reliably from −65 °C to +150 °C, matching its storage temperature range. This wide range supports deployment in automotive under-hood modules, industrial motor drives, and outdoor telecom equipment where ambient extremes demand robust junction stability and metallurgical bond integrity.
1N4608/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 85 V
- Current - Average Rectified (Io):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 400 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 10 ns
- Current - Reverse Leakage @ Vr:
- 100 µA @ 50 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
- Operating Temperature - Junction:
- -65°C ~ 150°C
1N4608/TR FAQ
1.How can I place an order for 1N4608/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4608/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 1N4608/TR reliable?
The price and inventory of 1N4608/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4608/TR is usually 5 days.
3.What payment methods are accepted for 1N4608/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4608/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4608/TR?
1N4608/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4608/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 1N4608/TR?
For technical support, including 1N4608/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4608/TR requirements.
6.How does Aetrix verify that 1N4608/TR is sourced from the original manufacturer or authorized distributors?
All 1N4608/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 1N4608/TR meets industry standards.
7.What is the process for return or replacement of 1N4608/TR?
All 1N4608/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4608/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 1N4608/TR part is unused and in its original packaging.
Return procedure for 1N4608/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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