My Inquiry
My Account
Microchip Technology SMBG5368CE3/TR13
- Part No.:
- SMBG5368CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5368CE3/TR13.pdf
- Description:
- DIODE ZENER 47V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,833
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBG5368CE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 47 V, ±2% tolerance (C suffix), 25 Ω dynamic impedance at 25 mA test current, and 100 mA maximum regulator current. It operates in the DO-215AA gull-wing package and is used for precision voltage regulation in power supply feedback loops, overvoltage protection circuits, and reference voltage generation.
For engineers reviewing the SMBG5368CE3/TR13 datasheet, SMBG5368CE3/TR13 pinout, SMBG5368CE3/TR13 application, or SMBG5368CE3/TR13 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), surge current rating (210 A), moisture sensitivity level (MSL 1), and RoHS-compliant matte-tin plating.
Technical Context
This device functions as a two-terminal voltage reference diode operating in reverse breakdown, with specified Zener voltage measured at 25 mA (IZT) and characterized by low dynamic impedance (25 Ω) and tight ±2% voltage tolerance. Its thermal design supports 5 W dissipation at lead temperature ≤25 °C, with derating to 1.38 W at ambient temperature under standard FR4 mounting.
The SMBG5368CE3/TR13 exhibits minimal voltage variation versus current due to low ZZT, withstands non-repetitive 8.3 ms half-sine surge currents up to 210 A, and maintains stable regulation across -65 °C to +150 °C junction temperature range without dry-pack requirements (MSL 1).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 47 V ±2% at 25 mA - precise reference for feedback networks requiring tight regulation tolerance. |
| Power Dissipation (PD) | 5.0 W at TL ≤25 °C - enables high-current regulation with adequate heat sinking on PCB leads. |
| Dynamic Impedance (ZZT) | 25 Ω at IZT = 25 mA - ensures minimal output voltage shift under load current variations. |
| Max Regulator Current (IZM) | 100 mA - defines upper DC current limit before exceeding rated power at specified VZ. |
| Surge Current (IZSM) | 210 A (8.3 ms half-sine) - provides robust transient overvoltage clamping capability. |
| Junction-to-Lead RθJL | 25 °C/W - allows accurate thermal modeling when mounted with recommended footprint on FR4. |
| Moisture Sensitivity Level | MSL 1 - eliminates bake-out requirement prior to reflow soldering. |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; operated with banded end positive relative to anode. Weight: 0.1 g. UL94V-0 void-free epoxy body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-biased current return path | Connected to system ground or lower-potential node in shunt regulation configuration. |
| Cathode | Reverse-biased voltage reference terminal | Banded end; connects to regulated rail or error amplifier input in feedback loop. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5368B equivalent | Identical electrical characteristics and testing to legacy through-hole 1N5368B, enabling drop-in replacement in upgraded designs. |
| RoHS-compliant matte-tin plating | e3 suffix confirms annealed tin finish compliant with IPC-J-STD-006 and MIL-STD-750 method 2026. |
| Gull-wing lead form | DO-215AA package enables visual solder joint inspection and high-density PCB layout. |
| Non-ESD-sensitive construction | Qualified per MIL-STD-750 method 1020 - no special ESD handling required during assembly. |
| High surge current capability | 210 A peak (8.3 ms) supports transient suppression in industrial power rails without external TVS. |
Applications
| Industrial Power Supply Feedback | Automotive Load Dump Protection |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or forward converter secondary-side feedback loop. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 47 V reference to optocoupler input or TL431 comparator. Use Value: ±2% VZ tolerance and 25 Ω ZZT ensure <±0.5% output voltage drift across line/load/temperature. |
Use Scenario: Clamping induced transients during battery disconnection in 24 V vehicle systems. IC Role / Device Role / Timing Role: Standby overvoltage clamp absorbing ISO 7637-2 Pulse 5a energy surges. Use Value: 210 A surge rating and 47 V clamping threshold protect downstream 5 V/3.3 V logic from >100 V spikes. |
| Programmable Reference Source | DC-DC Converter Trim Circuit |
Use Scenario: Generating adjustable reference voltage via resistor divider from fixed 47 V Zener node. IC Role / Device Role / Timing Role: Stable voltage source feeding DAC or potentiometer-adjusted divider network. Use Value: Low 25 Ω dynamic impedance minimizes divider loading error and improves trim resolution. |
Use Scenario: Fine-tuning output voltage of buck converter using external resistor network tied to FB pin. IC Role / Device Role / Timing Role: Precision 47 V reference establishing upper bound for feedback divider ratio. Use Value: Tight ±2% tolerance enables accurate 0.5–1% output voltage calibration without trimming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5368B | Through-hole DO-41 package; identical VZ, IZT, ZZT, and IZM; non-RoHS (Sn/Pb) plating. | Requires axial-leaded PCB footprint and wave soldering; not suitable for high-density SMT lines. | Select when legacy through-hole assembly or cost-sensitive non-RoHS production is required. |
| SMBG5368BE3/TR13 | Same DO-215AA package and electrical specs, but ±5% tolerance (B suffix) instead of ±2% (C suffix). | Higher VZ uncertainty (±5% vs ±2%) reduces accuracy in precision reference applications. | Select when tighter tolerance is unnecessary and cost optimization is prioritized over regulation stability. |
Compared with SMBG5368CE3/TR13, the 1N5368B offers identical regulation performance but mandates through-hole assembly, while SMBG5368BE3/TR13 trades ±2% voltage accuracy for lower unit cost-making the C-suffix version optimal for high-precision SMT power management where reference stability is critical.
Availability
SMBG5368CE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive electronics, and programmable reference circuits requiring stable component supply, RoHS compliance, and MSL 1 handling.
Supply support for SMBG5368CE3/TR13 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, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The SMBG53xx series was designed specifically for surface-mount voltage regulation and transient suppression in space-constrained, high-reliability power systems-replacing legacy 1N53xx devices with gull-wing packaging and RoHS compatibility.
FAQ
What is the Zener voltage tolerance of SMBG5368CE3/TR13?
The SMBG5368CE3/TR13 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This means its actual breakdown voltage falls within 46.06 V to 47.94 V when measured at 25 mA test current and 25 °C lead temperature. This tight tolerance supports precision regulation in feedback and reference applications where voltage accuracy directly impacts system performance.
Does SMBG5368CE3/TR13 require dry packing before reflow soldering?
No, SMBG5368CE3/TR13 does not require dry packing prior to reflow soldering. It is rated at Moisture Sensitivity Level (MSL) 1 per IPC/JEDEC J-STD-020B, meaning it can be stored indefinitely at ambient conditions (<30 °C / 60% RH) without baking. This eliminates pre-reflow bake cycles and simplifies manufacturing logistics for high-volume SMT assembly.
What is the maximum continuous power dissipation for SMBG5368CE3/TR13?
The SMBG5368CE3/TR13 is rated for 5.0 W continuous power dissipation at lead temperature (TL) ≤25 °C. When mounted on an FR4 PCB with 1 oz copper and the recommended footprint, its usable power drops to 1.38 W at 25 °C ambient temperature due to higher thermal resistance junction-to-ambient (90 °C/W). Derating curves apply above 25 °C.
How does the dynamic impedance of SMBG5368CE3/TR13 affect regulation stability?
The SMBG5368CE3/TR13 has a dynamic impedance (ZZT) of 25 Ω at 25 mA test current. This low value means the Zener voltage changes only ~25 mV per 1 mA change in current, minimizing output voltage drift under varying load conditions. In feedback loops, this directly improves regulation accuracy and transient response compared to higher-ZZT alternatives.
Is SMBG5368CE3/TR13 compatible with lead-free reflow profiles?
Yes, SMBG5368CE3/TR13 is fully compatible with lead-free reflow profiles. Its matte-tin (e3) plating meets J-STD-006 requirements and supports peak solder temperatures up to 260 °C for 10 seconds. The device's thermal resistance and package construction are qualified for standard JEDEC J-STD-020D reflow cycles without degradation of Zener characteristics or mechanical integrity.
SMBG5368CE3/TR13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-215AA, SMB Gull Wing
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 47 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 33.8 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1 A
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG5368CE3/TR13 FAQ
1.How can I place an order for SMBG5368CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5368CE3/TR13 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 SMBG5368CE3/TR13 reliable?
The price and inventory of SMBG5368CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5368CE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5368CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5368CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5368CE3/TR13?
SMBG5368CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5368CE3/TR13 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 SMBG5368CE3/TR13?
For technical support, including SMBG5368CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5368CE3/TR13 requirements.
6.How does Aetrix verify that SMBG5368CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5368CE3/TR13 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 SMBG5368CE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5368CE3/TR13?
All SMBG5368CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5368CE3/TR13, 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 SMBG5368CE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5368CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5368CE3/TR13 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…
