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1N5340BRL Equivalent & Substitute Parts
Part Overview
The 1N5340BRL is a 6 V, 5 W Zener diode manufactured by onsemi in T-18 axial through-hole packaging. This component is classified as obsolete, indicating discontinuation from the original manufacturer. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for applications utilizing this Zener diode specification.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Voltage - Zener (Nom) | 6 V |
| Power - Max | 5 W |
| Tolerance | ±5% |
| Impedance (Max) | 1 Ohms |
| Current - Reverse Leakage @ Vr | 1 µA @ 3 V |
| Voltage - Forward (Vf) (Max) @ If | 1.2 V @ 1 A |
| Operating Temperature Range | -65°C ~ 200°C |
| Mounting Type | Through Hole |
| Package / Case | T-18, Axial |
Substitute Part Grouping Explanation
Substitution of the 1N5340BRL is determined by electrical and mechanical parameter equivalence. The critical parameters for substitution are:
- Zener Voltage (Vz): 6 V nominal
- Power Dissipation (Pmax): 5 W
- Impedance (Zzt): 1 Ohms maximum
- Reverse Leakage Current: 1 µA @ 3 V
- Forward Voltage (Vf): 1.2 V @ 1 A maximum
- Mounting Type: Through Hole
- Package Type: T-18 Axial or equivalent axial configurations
Substitute parts are classified into two categories:
Direct Substitutes maintain identical electrical specifications and packaging, with differences limited to manufacturer, product status, or compliance certifications.
Similar Substitutes maintain core electrical specifications (6 V, 5 W, 1 Ohms impedance, 1 µA reverse leakage, 1.2 V forward voltage) but may differ in tolerance specifications, operating temperature range, or packaging format while remaining functionally compatible in the application.
Parameter Comparison
| Part Number | Manufacturer | Vz (Nom) | Power (Max) | Tolerance | Zzt (Max) | Vf (Max) @ If | Temp Range | Package | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|
| 1N5340BRL | onsemi | 6 V | 5 W | ±5% | 1 Ohms | 1.2 V @ 1 A | -65°C ~ 200°C | T-18, Axial | Obsolete | RoHS non-compliant |
| 1N5340BRLG | onsemi | 6 V | 5 W | ±5% | 1 Ohms | 1.2 V @ 1 A | -65°C ~ 200°C | Axial | Active | ROHS3 Compliant |
| 1N5340B | Microsemi Corporation | 6 V | 5 W | ±5% | 1 Ohms | 1.2 V @ 1 A | -65°C ~ 150°C | T-18, Axial | Active | RoHS non-compliant |
| 1N5340/TR12 | Microchip Technology | 6 V | 5 W | ±20% | 1 Ohms | 1.2 V @ 1 A | -65°C ~ 150°C | T-18, Axial | Active | RoHS non-compliant |
| 1N5340/TR8 | Microchip Technology | 6 V | 5 W | ±20% | 1 Ohms | 1.2 V @ 1 A | -65°C ~ 150°C | T-18, Axial | Active | RoHS non-compliant |
| 1N5340B-TP | Micro Commercial Co | 6 V | 5 W | ±5% | 1 Ohms | 1.2 V @ 1 A | -55°C ~ 150°C | DO-15, Axial | Active | ROHS3 Compliant |
| 1N5340C/TR12 | Microchip Technology | 6 V | 5 W | ±2% | 1 Ohms | 1.2 V @ 1 A | -65°C ~ 150°C | T-18, Axial | Active | RoHS non-compliant |
| 1N5340C/TR8 | Microchip Technology | 6 V | 5 W | ±2% | 1 Ohms | 1.2 V @ 1 A | -65°C ~ 150°C | T-18, Axial | Active | RoHS non-compliant |
| 1N5340CE3/TR12 | Microchip Technology | 6 V | 5 W | ±2% | 1 Ohms | 1.2 V @ 1 A | -65°C ~ 150°C | T-18, Axial | Active | ROHS3 Compliant |
| 1N5340CE3/TR8 | Microchip Technology | 6 V | 5 W | ±2% | 1 Ohms | 1.2 V @ 1 A | -65°C ~ 150°C | T-18, Axial | Active | ROHS3 Compliant |
| 1N5340E3/TR12 | Microchip Technology | 6 V | 5 W | ±20% | 1 Ohms | 1.2 V @ 1 A | -65°C ~ 150°C | T-18, Axial | Active | RoHS non-compliant |
Engineering Selection Recommendations
Primary Recommendation: 1N5340BRLG
The 1N5340BRLG is the direct successor to the 1N5340BRL. Manufactured by onsemi, it maintains identical electrical specifications (6 V, 5 W, ±5% tolerance, 1 Ohms impedance) and operating temperature range (-65°C ~ 200°C). The primary distinction is product status: 1N5340BRLG is active with ROHS3 compliance, whereas the original 1N5340BRL is obsolete and RoHS non-compliant. This part is suitable for new designs and ongoing production requiring regulatory compliance.
Secondary Recommendation: 1N5340B
The 1N5340B, manufactured by Microsemi Corporation, provides electrical equivalence with identical tolerance (±5%) and package type (T-18 Axial). This part is active and maintains the same core specifications. The operating temperature range is reduced to -65°C ~ 150°C compared to the original -65°C ~ 200°C. Selection of this part is appropriate when the reduced upper temperature limit is acceptable for the application.
Alternative Recommendations for Tolerance-Flexible Applications:
Parts with ±2% tolerance (1N5340C/TR12, 1N5340C/TR8, 1N5340CE3/TR12, 1N5340CE3/TR8) provide superior voltage accuracy and are suitable for applications requiring tighter Zener voltage control. The 1N5340CE3 variants offer ROHS3 compliance.
Parts with ±20% tolerance (1N5340/TR12, 1N5340/TR8, 1N5340E3/TR12) are suitable for applications with relaxed voltage tolerance requirements and offer cost optimization.
Package Consideration:
The 1N5340B-TP differs in package format (DO-15 instead of T-18 Axial) but maintains electrical equivalence. This part is suitable only if the application circuit board layout can accommodate the DO-15 package geometry. ROHS3 compliance is available with this variant.
Frequently Asked Questions (FAQ)
Q: Can I use 1N5340BRLG as a direct replacement for 1N5340BRL?
A: Yes. The 1N5340BRLG is electrically and mechanically equivalent to the 1N5340BRL. Both parts share identical Zener voltage (6 V), power rating (5 W), tolerance (±5%), impedance (1 Ohms), and operating temperature range (-65°C ~ 200°C). The primary difference is that 1N5340BRLG is an active product with ROHS3 compliance, making it the recommended replacement for the obsolete 1N5340BRL.
Q: What is the difference between ±5%, ±2%, and ±20% tolerance variants?
A: Tolerance specifies the allowable deviation of the Zener voltage from the nominal 6 V specification. ±5% tolerance allows deviation between 5.7 V and 6.3 V. ±2% tolerance provides tighter control between 5.88 V and 6.12 V. ±20% tolerance allows wider deviation between 4.8 V and 7.2 V. Selection depends on the application's voltage regulation requirements. Tighter tolerance (±2%) is necessary for precision voltage reference applications, while relaxed tolerance (±20%) is acceptable for general protection circuits.
Q: Can I substitute a part with a different package type, such as 1N5340B-TP (DO-15)?
A: Package substitution is possible only if the application circuit board layout can physically accommodate the different package geometry. The 1N5340B-TP uses DO-15 (DO-204AC) package instead of T-18 Axial. Electrical specifications remain equivalent. Physical board layout verification is required before implementing this substitution.
Q: What is the significance of the operating temperature range difference between -65°C ~ 200°C and -65°C ~ 150°C?
A: The operating temperature range defines the ambient conditions under which the component maintains specified electrical performance. The original 1N5340BRL and 1N5340BRLG support operation up to 200°C, while alternatives such as 1N5340B support only 150°C. Selection of a part with reduced upper temperature limit is acceptable only if the application environment does not exceed 150°C.
Q: What does "TR8" and "TR12" mean in part numbers like 1N5340/TR8 and 1N5340/TR12?
A: TR8 and TR12 designate tape and reel packaging configurations with different quantities per reel. TR8 indicates 8 units per reel, while TR12 indicates 12 units per reel. These designations affect packaging and ordering quantities but do not alter electrical specifications. Selection between TR8 and TR12 is based on procurement and inventory requirements.
Q: Are all substitute parts RoHS compliant?
A: No. RoHS compliance varies among substitute parts. The 1N5340BRLG, 1N5340B-TP, 1N5340CE3/TR12, and 1N5340CE3/TR8 are ROHS3 compliant. The 1N5340B, 1N5340/TR12, 1N5340/TR8, 1N5340C/TR12, 1N5340C/TR8, and 1N5340E3/TR12 are RoHS non-compliant. Selection of a RoHS-compliant part is necessary for applications subject to RoHS regulations or customer requirements.
Q: Can I use a substitute part with a lower maximum operating temperature in a high-temperature application?
A: No. If the application requires operation at temperatures exceeding 150°C, only parts with operating temperature range extending to 200°C are suitable. The 1N5340BRL and 1N5340BRLG support -65°C ~ 200°C operation. All other substitute parts are limited to -65°C ~ 150°C and are not suitable for high-temperature applications exceeding this limit.
Q: What is the difference between "Direct" and "Similar" substitute classifications?
A: Direct substitutes maintain identical electrical specifications, tolerance, and operating temperature range as the original part, with differences limited to manufacturer, product status, or compliance certifications. Similar substitutes maintain core electrical specifications (6 V, 5 W, 1 Ohms impedance) but may differ in tolerance or operating temperature range. Direct substitutes provide seamless replacement, while similar substitutes require application-specific evaluation of tolerance and temperature requirements.
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