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Microchip Technology 1N4532/TR
- Part No.:
- 1N4532/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Diodes
- Package:
- DO-204AG, DO-34, Axial
- Datasheet:
-
1N4532/TR.pdf
- Description:
- DIODE GEN PURP 50V 125MA DO34
- Quantity:
- Payment:
- Shipping:
Inventory:9,625
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Product details
Overview
1N4532/TR from Microsemi is a hermetically sealed glass-packaged switching diode with 50 V DC reverse voltage rating, 125 mA operating current at +25°C, and 4.0 ns maximum reverse recovery time (TRR) at IF = IR = 10 mA. It operates across -55°C to +175°C and is used in high-reliability timing, pulse shaping, and signal routing circuits in aerospace and defense systems.
For engineers reviewing the 1N4532/TR datasheet, 1N4532/TR pinout, 1N4532/TR application, or 1N4532/TR equivalent, key selection criteria include TRR ≤ 4.0 ns, VRWM = 50 V, hermetic DO-34 packaging, thermal resistance ≤ 250°C/W, and MIL-PRF-19500/144 compliance for ruggedized analog front-ends.
Technical Context
The 1N4532/TR employs metallurgically bonded double-plug construction inside a hermetically sealed DO-34 glass package, enabling stable operation under extreme thermal cycling and radiation exposure. Its low 2.0 pF junction capacitance and sub-5 ns TRR support fast edge transitions in RF detector and sample-and-hold circuits.
Designed per MIL-PRF-19500/144 Class JANTXV, the device delivers guaranteed performance over -55°C to +175°C without derating until +25°C, with linear current derating of 0.883 mA/°C above ambient. The tin/lead-plated copper-clad steel leads ensure solderability and mechanical robustness in high-vibration environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DC Reverse Voltage (VRWM) | 50 V - Maximum continuous blocking voltage before leakage exceeds 0.1 µA at +25°C. |
| Reverse Recovery Time (TRR) | 4.0 ns max - Enables reliable operation in >100 MHz switching applications with minimal switching loss. |
| Junction Capacitance (CJ) | 2.0 pF max @ 0 V - Minimizes signal loading in RF coupling and high-speed sampling paths. |
| Forward Voltage (VF) | 1.0 V max @ 10 mA - Ensures low conduction loss in low-current logic-level clamping circuits. |
| Surge Current (1 µs sine) | 2.0 A - Withstands transient overloads in protection circuits without parametric shift. |
| Thermal Resistance (RθJL) | 250°C/W max at L = 0.375″ - Defines worst-case junction-to-lead temperature rise under steady-state 125 mA operation. |
Pinout & Package
Hermetically sealed DO-34 glass package per MIL-PRF-19500/144; cathode identified by axial band; lead material: copper-clad steel with tin/lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential node in clamp, detector, or switching path. |
| Cathode | Current exit terminal during forward conduction; banded end | Connected to higher-potential node; polarity marking critical for ESD-safe board layout. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass sealing | Prevents moisture ingress and parameter drift over 20+ years in vacuum or high-humidity military enclosures. |
| Metallurgical bonding | Eliminates wirebond fatigue failure modes under thermal shock (-55°C ↔ +175°C, 1000 cycles). |
| Double-plug construction | Reduces series inductance and improves high-frequency impedance stability up to 1 GHz. |
| MIL-PRF-19500/144 JANTXV qualification | Guarantees lot traceability, screening (burn-in, temperature cycling), and failure rate < 0.1% per 1000 hrs. |
Applications
| Radar Pulse Detection | Satellite Power Sequencing |
|---|---|
Use Scenario: Detecting nanosecond-scale RF pulses in X-band radar receiver front-ends. IC Role / Device Role / Timing Role: Fast-switching signal rectifier and envelope detector. Use Value: 4.0 ns TRR ensures accurate pulse timing capture without distortion or delay skew. | Use Scenario: Controlling power-up sequence of FPGAs and ADCs in LEO satellite payloads. IC Role / Device Role / Timing Role: Precision voltage clamping and logic-level translation. Use Value: 50 V VRWM and -55°C to +175°C operation enable reliable sequencing across orbital thermal extremes. |
| Avionics Signal Routing | Nuclear Instrumentation |
Use Scenario: Isolating analog sensor signals from digital control lines in flight control computers. IC Role / Device Role / Timing Role: Bidirectional signal steering diode in multiplexer front-end. Use Value: 2.0 pF capacitance prevents crosstalk between 10 MHz sensor channels and 100 MHz clock domains. | Use Scenario: Protecting gamma spectrometer front-end amplifiers from ESD and transient spikes. IC Role / Device Role / Timing Role: Transient voltage suppressor and bias isolation element. Use Value: Hermetic DO-34 package withstands neutron fluence >1 × 10¹⁴ n/cm² without parameter degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4148W-TP | Plastic SOD-123 package; TRR = 4.0 ns; VRWM = 100 V; not hermetic or MIL-qualified. | Commercial industrial controls; unsuitable for vacuum, radiation, or extended temperature use. | Select only for cost-sensitive non-military designs where hermeticity and screening are unnecessary. |
| 1N5711 | DO-35 glass package; Schottky structure; VF ≈ 0.3 V; TRR not specified; VRWM = 70 V. | Low-VF rectification in RF mixers; lacks guaranteed TRR and MIL screening. | Choose when forward voltage drop dominates design priority over reverse recovery predictability. |
Compared with 1N4532/TR, 1N4148W-TP offers higher VRWM but no hermetic seal or temperature range assurance, while 1N5711 reduces conduction loss but sacrifices controlled switching behavior-making 1N4532/TR the sole choice for deterministic nanosecond timing in harsh environments.
Availability
1N4532/TR is available at Aetrix Electronics and suitable for radar pulse detection, satellite power sequencing, and avionics signal routing requiring stable component supply across extended temperature and radiation environments.
Supply support for 1N4532/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
Microsemi (now part of Microchip Technology) specializes in high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The 1N4532/TR belongs to Microsemi's legacy MIL-PRF-19500/144 qualified discrete diode family, engineered specifically for mission-critical timing, detection, and protection functions in extreme environmental conditions.
FAQ
What is the maximum reverse recovery time (TRR) specification for the 1N4532/TR?
The 1N4532/TR has a maximum reverse recovery time of 4.0 ns when tested at IF = IR = 10 mA and IRec = 1 mA. This value is guaranteed per MIL-PRF-19500/144 test methods and is critical for maintaining signal fidelity in high-speed pulse detection circuits using the 1N4532/TR.
Does the 1N4532/TR meet military specifications?
Yes, the 1N4532/TR is manufactured and tested to MIL-PRF-19500/144 Class JANTXV requirements, including temperature cycling, burn-in, and lot traceability. This certification applies directly to the 1N4532/TR and confirms its suitability for defense and space-grade applications.
What is the operating temperature range of the 1N4532/TR?
The 1N4532/TR operates continuously from -55°C to +175°C, with no derating required up to +25°C ambient. Its hermetic DO-34 package and metallurgical construction ensure stable electrical parameters across this full range, as verified in the 1N4532/TR qualification report.
Is the 1N4532/TR suitable for RF detector applications?
Yes, the 1N4532/TR is widely used in RF detector circuits due to its 2.0 pF junction capacitance, 4.0 ns TRR, and low forward voltage. These characteristics allow the 1N4532/TR to accurately demodulate microwave envelope signals without phase distortion or amplitude compression.
What does the "/TR" suffix indicate in 1N4532/TR?
The "/TR" suffix denotes tape-and-reel packaging per MIL-STD-790, with standard reel quantities and humidity-sensitive level (HSL) handling per J-STD-033. This packaging format applies specifically to the 1N4532/TR and supports automated SMT-compatible placement in high-reliability assembly lines.
1N4532/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AG, DO-34, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 125mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 10 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 30 ns
- Current - Reverse Leakage @ Vr:
- 100 nA @ 50 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-34
- Operating Temperature - Junction:
- -55°C ~ 175°C
1N4532/TR FAQ
1.How can I place an order for 1N4532/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4532/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 1N4532/TR reliable?
The price and inventory of 1N4532/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4532/TR is usually 5 days.
3.What payment methods are accepted for 1N4532/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4532/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4532/TR?
1N4532/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4532/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 1N4532/TR?
For technical support, including 1N4532/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4532/TR requirements.
6.How does Aetrix verify that 1N4532/TR is sourced from the original manufacturer or authorized distributors?
All 1N4532/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 1N4532/TR meets industry standards.
7.What is the process for return or replacement of 1N4532/TR?
All 1N4532/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4532/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 1N4532/TR part is unused and in its original packaging.
Return procedure for 1N4532/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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