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Microchip Technology 1N4608
- Part No.:
- 1N4608
- Manufacturer:
- Microchip Technology
- Category:
- Single Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N4608.pdf
- Description:
- DIODE GEN PURP 85V 200MA DO35
- Quantity:
- Payment:
- Shipping:
Inventory:3,570
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Product details
Overview
1N4608 from BKC is a silicon switching diode in DO-35 glass package, rated for 85 V peak inverse voltage, 200 mA average rectified current, and 10 ns reverse recovery time, used in high-speed signal routing and low-power rectification circuits.
For engineers reviewing the 1N4608 datasheet, 1N4608 pinout, 1N4608 application, or 1N4608 equivalent, key selection criteria include fast switching (trr = 10 ns), low forward voltage (VF ≤ 1.10 V @ 400 mA), controlled forward characteristic, and operation up to +150 °C ambient.
Technical Context
The 1N4608 is a planar-diffused, metallurgically bonded silicon PN junction diode optimized for general-purpose switching with minimal charge storage. Its 10 ns reverse recovery time enables use in 1–10 MHz oscillator and pulse shaping circuits.
Designed for through-hole mounting in DO-35, the device exhibits stable leakage (IR ≤ 100 µA @ 50 V) and thermal robustness across –65 °C to +150 °C operating range, supporting reliability-critical instrumentation and telecom interface stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Inverse Voltage | 85 V minimum - ensures blocking capability in 48 V DC-DC flyback snubbers and signal clamping above 60 V transients |
| Average Rectified Current | 200 mA - supports continuous operation in low-current power supply outputs and bias networks |
| Reverse Recovery Time | 10 ns - enables clean edge transitions in 5–10 MHz clock distribution and digital logic interfacing |
| Forward Voltage Drop | ≤1.10 V @ 400 mA - minimizes conduction loss in low-voltage signal steering paths |
| Reverse Leakage Current | ≤100 µA @ 50 V - maintains signal integrity in high-impedance sample-and-hold and analog switch applications |
| Operating Temperature Range | –65 °C to +150 °C - qualified for under-hood automotive sensors and industrial control modules |
Pinout & Package
DO-35 glass axial package: 3.05–5.08 mm length, 1.53–2.28 mm diameter, 0.458–0.558 mm lead diameter, leads tinned per BKC's Sigma Bond™ plating for solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward current entry point | Connected to lower-potential side in rectifier or cathode-follower clamp configurations |
| Cathode (K) | Forward current exit / PIV reference | Marked with band; ties to higher-potential rail in reverse-biased protection or logic-level translation |
Key Features
| Feature | Design Value |
|---|---|
| Six sigma quality manufacturing | Statistical process control ensures <0.002 ppm defect rate in high-volume production assemblies |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling (–65 °C ↔ +150 °C, 1000 cycles) |
| Sigma Bond™ plating | Guarantees void-free solder joint formation on ENIG and HASL PCB finishes without flux optimization |
| Fast 10 ns trr | Reduces switching loss and ringing in 5–20 MHz pulse generators and RF detector front-ends |
Applications
| High-Speed Logic Clamping | Low-Power Signal Rectification |
|---|---|
Use Scenario: Protecting CMOS input pins from ESD-induced overshoot in UART/RS-232 level translators. IC Role / Device Role / Timing Role: Fast-switching clamp diode shunting transient energy to VCC or GND rails. Use Value: 10 ns trr prevents latch-up during sub-100 ns spikes; 85 V PIV accommodates ±30 V fault margins. |
Use Scenario: Generating DC bias from AC-coupled sensor signals in precision analog front-ends. IC Role / Device Role / Timing Role: Half-wave rectifier converting mV-level AC waveforms into unidirectional DC offsets. Use Value: Low VF (≤1.10 V) preserves small-signal amplitude; 100 µA IR avoids loading high-Z op-amp inputs. |
| RF Detector Diode | Timing Circuit Snubber |
Use Scenario: Demodulating 1–10 MHz carrier signals in AM receiver IF stages and proximity sensor oscillators. IC Role / Device Role / Timing Role: Zero-bias envelope detector exploiting low junction capacitance and fast recovery. Use Value: 10 ns trr enables accurate demodulation up to 10 MHz; DO-35 geometry minimizes parasitic inductance. |
Use Scenario: Suppressing voltage spikes across relay coils and solenoid drivers in PLC I/O modules. IC Role / Device Role / Timing Role: Freewheeling diode providing low-loss current path during inductive turn-off. Use Value: 200 mA Iavg rating matches typical 12–24 V coil hold currents; 85 V PIV covers 2× supply transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar silicon switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4150 | Same DO-35 package; PIV = 50 V (vs. 85 V); trr = 4 ns (faster) | Limited to ≤30 V circuits; preferred in ultra-fast 20+ MHz logic clamping where lower PIV is acceptable | Select 1N4150 only when PIV margin <50 V suffices and trr <5 ns is mandatory |
| 1N4607 | Identical PIV (85 V), trr (10 ns), and package; IFdc = 200 mA (vs. 500 mA in some variants) | Functionally interchangeable in most 1N4608 designs; verified compatibility in BKC's cross-reference matrix | 1N4607 is a direct form-fit-function alternative with identical electrical specs and DO-35 footprint |
Compared with 1N4150 and 1N4607, the 1N4608 provides the highest PIV margin among the three while retaining 10 ns speed-making it optimal for 48 V systems and mixed-signal interfaces requiring both robustness and responsiveness.
Availability
1N4608 is available at Aetrix Electronics and suitable for high-speed logic clamping, low-power signal rectification, RF detection, and timing circuit snubbing requiring stable component supply and long-term obsolescence management.
Supply support for 1N4608 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 (Boca Components, Inc.) is a U.S.-based semiconductor manufacturer specializing in high-reliability discrete diodes and rectifiers for industrial, automotive, and aerospace applications.
The 1N4608 belongs to BKC's silicon switching diode product line, engineered for fast switching, thermal stability, and consistent solderability in mission-critical signal-path and power-control functions.
FAQ
What is the maximum continuous forward current rating for the 1N4608?
The 1N4608 has a continuous forward current (IFdc) rating of 200 mA under standard conditions. Some BKC documentation lists 500 mA for specific test conditions, but the guaranteed minimum for design margin is 200 mA at TL = 50 °C with 3/8″ lead length. Always verify thermal layout when operating near this limit.
Does the 1N4608 have a specified junction capacitance value?
No junction capacitance (Cj) value is published in the official 1N4608 datasheet or BKC application notes. The device is optimized for low charge storage (trr = 10 ns), but designers requiring precise Cj should measure or select alternatives like the 1N4148, which specifies 4 pF at VR = 0 V.
Is the 1N4608 RoHS compliant and halogen-free?
Yes, the 1N4608 meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. BKC confirms compliance in its material declarations, with lead-free terminations and glass passivation compatible with lead-free reflow profiles.
Can the 1N4608 replace the 1N4148 in high-frequency applications?
The 1N4608 offers comparable trr (10 ns vs. 4 ns for 1N4148) and higher PIV (85 V vs. 100 V), but its VF is higher (≤1.10 V vs. ≤1.0 V). It can replace the 1N4148 in ≤5 MHz applications where PIV > 80 V is required, but not in ultra-fast 20+ MHz switching due to slower recovery.
What is the thermal resistance junction-to-lead (RθJL) for the 1N4608?
RθJL is not explicitly specified for the 1N4608. However, based on its 500 mW total power dissipation rating at TL = 50 °C and DO-35 package geometry, typical RθJL falls between 120–150 °C/W. For thermal design, assume worst-case 150 °C/W unless validated by BKC's thermal characterization report.
1N4608 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- 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 FAQ
1.How can I place an order for 1N4608 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4608 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 reliable?
The price and inventory of 1N4608 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4608 is usually 5 days.
3.What payment methods are accepted for 1N4608?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4608 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4608?
1N4608 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4608 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?
For technical support, including 1N4608 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4608 requirements.
6.How does Aetrix verify that 1N4608 is sourced from the original manufacturer or authorized distributors?
All 1N4608 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 meets industry standards.
7.What is the process for return or replacement of 1N4608?
All 1N4608 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4608, 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 part is unused and in its original packaging.
Return procedure for 1N4608:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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