My Inquiry
My Account
Microchip Technology 1N4750CP/TR8
- Part No.:
- 1N4750CP/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4750CP/TR8.pdf
- Description:
- DIODE ZENER 27V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,168
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N4750CP/TR8 from Microsemi is a 1.0 W, 27 V ±5% plastic-encapsulated Zener diode in DO-41 package, rated for 9.5 mA test current, 35 Ω dynamic impedance at IZT, and 5 μA reverse leakage at 20.6 V, used for precision voltage regulation in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N4750CP/TR8 datasheet, 1N4750CP/TR8 pinout, 1N4750CP/TR8 application, or 1N4750CP/TR8 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (45 °C/W junction-to-lead), surge current rating (750 mA), operating temperature range (–65 °C to +150 °C), and RoHS-compliant "e3" plating with tape-and-reel packaging.
Technical Context
This Zener operates in reverse breakdown mode with sharp knee characteristics verified per MicroNote 202, using 10% AC superimposition on DC test current to measure dynamic impedance. Its 27 V nominal regulation is stable across –65 °C to +150 °C with a positive temperature coefficient above 5.6 V.
The DO-41 plastic package delivers lower thermal resistance than glass-body variants (G suffix), enabling higher power handling at lead temperature <105 °C. It meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity with no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27 V ±5% at 9.5 mA - defines precise regulation point for feedback references |
| Power Dissipation | 1.0 W at TL < 105 °C - sets maximum steady-state thermal load on lead |
| Dynamic Impedance (ZZT) | 35 Ω at 9.5 mA - determines output voltage variation under load transients |
| Reverse Leakage (IR) | 5 μA max at 20.6 V - ensures low quiescent current in standby regulation |
| Surge Current (ISM) | 750 mA peak (½-sine, 1/120 s) - supports transient overvoltage clamping |
| Thermal Resistance | 45 °C/W junction-to-lead (3/8″ lead length) - enables thermal design with minimal heatsinking |
| Operating Temperature | –65 °C to +150 °C - qualified for industrial and extended-temperature environments |
Pinout & Package
DO-41 (DO-204AL) axial-leaded plastic package with cathode indicated by band; polarity critical for Zener operation (banded end positive during regulation).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference | Connected to circuit ground or lower-potential node during regulation |
| Cathode | Zener breakdown terminal | Banded end; connected to regulated voltage rail - must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 5% tolerance | Ensures consistent voltage setpoint across production lots without binning |
| Plastic encapsulation (P suffix) | Reduces thermal resistance vs. glass-body equivalents, improving power reliability |
| RoHS-compliant "e3" plating | Enables compliance with environmental directives without solderability compromise |
| Tape-and-reel packaging (TR8) | Supports automated SMT placement despite axial-leaded form factor |
| MIL-STD-750 ESD immunity | Eliminates need for additional ESD handling controls in assembly |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator ICs or discrete pass transistor circuits. IC Role / Device Role / Timing Role: Zener diode providing fixed reference voltage to error amplifier input. Use Value: 27 V ±5% regulation with 35 Ω dynamic impedance maintains output accuracy under varying load currents. | Use Scenario: Protecting downstream ICs from transient voltage spikes on DC rails. IC Role / Device Role / Timing Role: Shunt clamp absorbing excess energy during surge events. Use Value: 750 mA peak surge rating and fast knee response limit rail excursion to ≤27.5 V during 1/120 s transients. |
| Signal Level Translation | Current Source Bias |
Use Scenario: Generating stable bias points for op-amp input stages or comparator thresholds. IC Role / Device Role / Timing Role: Voltage reference establishing known DC offset in analog signal chains. Use Value: Low 5 μA leakage at 20.6 V minimizes error current injection into high-impedance nodes. | Use Scenario: Setting constant current for LED drivers or sensor excitation circuits. IC Role / Device Role / Timing Role: Zener-based current source with series resistor. Use Value: Stable 27 V reference enables predictable current calculation (I ≈ (VIN−27)/R) across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4750A | No "P" (plastic) or "TR8" suffix; bulk packaging, glass body option possible | Lacks tape-and-reel and guaranteed plastic construction; higher thermal resistance | Select when manual assembly or legacy glass-body compatibility required |
| BZX55-C27 | 27 V ±5%, 500 mW rating, DO-35 package, 60 Ω ZZT | Lower power and higher impedance limit use in high-current or low-noise references | Select for space-constrained designs where 1 W dissipation is unnecessary |
Compared with 1N4750A and BZX55-C27, the 1N4750CP/TR8 offers superior thermal performance (45 °C/W), guaranteed plastic encapsulation, and automated assembly readiness - making it optimal for industrial power supplies requiring long-term stability and volume manufacturability.
Availability
1N4750CP/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, overvoltage protection circuits, and analog reference designs requiring stable component supply, full traceability, and RoHS compliance.
Supply support for 1N4750CP/TR8 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) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.
The 1N47xxAP series was designed specifically for robust, cost-effective voltage regulation in harsh-environment power systems where JEDEC-standardized performance and long-term parametric stability are critical.
FAQ
What is the Zener voltage tolerance of the 1N4750CP/TR8?
The 1N4750CP/TR8 has a nominal Zener voltage of 27 V with a ±5% tolerance, as indicated by the "A" suffix in the part number per JEDEC registration. This tolerance is measured at 9.5 mA test current and 25 °C lead temperature, ensuring predictable regulation across production units without binning.
Does the 1N4750CP/TR8 require dry-pack moisture protection before PCB assembly?
No, the 1N4750CP/TR8 is moisture classified as Level 1 per IPC/JEDEC J-STD-020B, meaning it may be stored and assembled without dry-pack desiccant or baking. Its void-free thermosetting epoxy body inherently resists moisture absorption, simplifying manufacturing logistics.
What is the maximum surge current rating for the 1N4750CP/TR8?
The 1N4750CP/TR8 is rated for a peak reverse surge current (ISM) of 750 mA, measured using a ½-sine wave pulse of 1/120 second duration at 25 °C ambient. This rating supports transient clamping in power supply input stages and protection circuits subject to short-duration overvoltage events.
How does the "P" and "TR8" suffix affect the 1N4750CP/TR8 packaging?
The "P" suffix confirms plastic (DO-41) encapsulation - offering lower thermal resistance than glass-body variants - while "TR8" specifies EIA-296-compliant tape-and-reel packaging with 8 mm carrier tape width, enabling direct use in automated pick-and-place equipment despite its axial-leaded form.
Is the 1N4750CP/TR8 RoHS compliant?
Yes, the 1N4750CP/TR8 is RoHS compliant, as confirmed by the "e3" suffix in its full designation (1N4750CP/TR8-e3 per Microsemi documentation), indicating annealed matte-tin plating that meets EU Directive 2011/65/EU requirements without compromising solderability or reliability.
1N4750CP/TR8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 27 V
- Tolerance:
- ±2%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 35 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 20.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
1N4750CP/TR8 FAQ
1.How can I place an order for 1N4750CP/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4750CP/TR8 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 1N4750CP/TR8 reliable?
The price and inventory of 1N4750CP/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4750CP/TR8 is usually 5 days.
3.What payment methods are accepted for 1N4750CP/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4750CP/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4750CP/TR8?
1N4750CP/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4750CP/TR8 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 1N4750CP/TR8?
For technical support, including 1N4750CP/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4750CP/TR8 requirements.
6.How does Aetrix verify that 1N4750CP/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N4750CP/TR8 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 1N4750CP/TR8 meets industry standards.
7.What is the process for return or replacement of 1N4750CP/TR8?
All 1N4750CP/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4750CP/TR8, 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 1N4750CP/TR8 part is unused and in its original packaging.
Return procedure for 1N4750CP/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4750CP/TR8 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
