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LM2902HDT Equivalent & Substitute Parts
Part Overview
The LM2902HDT is a general-purpose operational amplifier integrated circuit manufactured by STMicroelectronics, configured as a 4-circuit push-pull amplifier in a 14-SO surface mount package. This device is classified as obsolete, indicating discontinued production and limited availability in the market. The identification of equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications utilizing this component.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | LM2902HDT |
| Manufacturer | STMicroelectronics |
| Amplifier Type | General Purpose |
| Number of Circuits | 4 |
| Output Type | Push-Pull |
| Slew Rate | 0.4 V/µs |
| Gain Bandwidth Product | 1.3 MHz |
| Current - Input Bias | 20 nA |
| Voltage - Input Offset | 2 mV |
| Current - Output / Channel | 20 mA |
| Voltage - Supply Span (Min) | 3 V |
| Voltage - Supply Span (Max) | 30 V |
| Operating Temperature | -40°C to 150°C |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution of the LM2902HDT is determined by strict alignment of the following critical parameters:
Primary Substitution Criteria:
- Number of circuits: 4 (mandatory)
- Amplifier type: General Purpose (mandatory)
- Package type: 14-SOIC with 0.154" width, 3.90mm width (mandatory for PCB compatibility)
- Mounting type: Surface Mount (mandatory)
- Voltage supply span minimum: 3 V or lower (mandatory)
- Voltage supply span maximum: 26 V or higher (mandatory for 30 V operation)
Secondary Compatibility Parameters:
- Slew rate: 0.4 V/µs or higher (performance consideration)
- Gain bandwidth product: 1.2 MHz or higher (performance consideration)
- Current - input bias: 20 nA or lower (performance consideration)
- Voltage - input offset: 3 mV or lower (performance consideration)
- Current - output per channel: 20 mA or higher (performance consideration)
- Operating temperature range: -40°C minimum and 125°C or higher maximum (performance consideration)
Substitute parts are grouped into two categories: Active Status Parts (currently in production) and Obsolete/Last Time Buy Parts (limited availability). All substitute parts maintain the 4-circuit general-purpose amplifier configuration and 14-SOIC package footprint required for direct replacement.
Parameter Comparison
| Parameter | LM2902HDT (Main) | BA2902SF-E2 | LM248DR | LM2902D | LM2902DR | LM2902DR2G | LM2902DRG3 | LM2902KAVQDR | LM2902KAVQDRQ1 | LM2902KD | LM2902KDR |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | STMicroelectronics | Rohm Semiconductor | Texas Instruments | onsemi | Rohm Semiconductor | onsemi | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Rohm Semiconductor |
| Number of Circuits | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Amplifier Type | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose |
| Slew Rate (V/µs) | 0.4 | 0.2 | 0.5 | 0.5 | 0.3 | — | 0.5 | 0.5 | 0.5 | 0.5 | 0.3 |
| Gain Bandwidth Product (MHz) | 1.3 | 0.5 | 1.0 | 1.2 | 1.2 | 1.0 | 1.2 | 1.2 | 1.2 | 1.2 | 0.7 |
| Current - Input Bias (nA) | 20 | 20 | 30 | 20 | 20 | 90 | 20 | 20 | 20 | 20 | 20 |
| Voltage - Input Offset (mV) | 2 | 2 | 1 | 3 | 1 | 2 | 3 | 3 | 3 | 3 | 3 |
| Current - Output / Channel (mA) | 20 | 30 | 25 | 30 | 30 | 40 | 30 | 30 | 60 | 30 | 30 |
| Voltage - Supply Span (Min) (V) | 3 | 3 | 8 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| Voltage - Supply Span (Max) (V) | 30 | 32 | 36 | 26 | 32 | 32 | 26 | 30 | 32 | 26 | 26 |
| Operating Temperature (°C) | -40 to 150 | -40 to 105 | -25 to 85 | -40 to 125 | -40 to 125 | -40 to 105 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 |
| Package / Case | 14-SOIC (0.154", 3.90mm) | 14-SOIC (0.173", 4.40mm) | 14-SOIC (0.154", 3.90mm) | 14-SOIC (0.154", 3.90mm) | 14-SOIC (0.154", 3.90mm) | 14-SOIC (0.154", 3.90mm) | 14-SOIC (0.154", 3.90mm) | 14-SOIC (0.154", 3.90mm) | 14-SOIC (0.154", 3.90mm) | 14-SOIC (0.154", 3.90mm) | 14-SOIC (0.154", 3.90mm) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Product Status | Obsolete | Active | Active | Obsolete | Obsolete | Active | Last Time Buy | Active | Active | Last Time Buy | Obsolete |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | RoHS non-compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | 1 (Unlimited) | 1 (Unlimited) | — | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
Recommended Active Status Substitutes:
The following parts are currently in active production and represent the primary substitution options:
LM2902DR2G (onsemi) — This part maintains full compatibility with the LM2902HDT across all critical parameters: 4-circuit general-purpose amplifier, 14-SOIC package (0.154", 3.90mm), 3 V to 32 V supply range, and -40°C to 105°C operating temperature. The part offers superior output current capability (40 mA per channel versus 20 mA), ROHS3 compliance, and MSL 1 rating. Active production status ensures long-term availability.
LM2902KAVQDRQ1 (Texas Instruments) — This automotive-qualified part (AEC-Q100) provides extended operating temperature range (-40°C to 125°C), matching the LM2902HDT's upper temperature specification. It features 4-circuit configuration, 14-SOIC package compatibility, 3 V to 32 V supply range, and enhanced output current (60 mA per channel). ROHS3 compliance and MSL 1 rating are provided. Active production status with automotive qualification supports reliability-critical applications.
LM2902KAVQDR (Texas Instruments) — This automotive-qualified part (AEC-Q100) offers similar specifications to LM2902KAVQDRQ1 with 30 V maximum supply voltage (matching the LM2902HDT exactly), 4-circuit configuration, 14-SOIC package, and -40°C to 125°C operating temperature. Output current is 30 mA per channel. ROHS3 compliance and MSL 1 rating are provided. Active production status supports long-term design continuity.
BA2902SF-E2 (Rohm Semiconductor) — This part provides 4-circuit general-purpose amplifier configuration with 14-SOIC package and 3 V to 32 V supply range. Enhanced output current (30 mA per channel) and MSL 1 rating are provided. Operating temperature range is -40°C to 105°C. ROHS3 compliance is maintained. Active production status ensures availability. Note: Package width is 0.173" (4.40mm) versus 0.154" (3.90mm) for the main part; PCB layout verification is required.
LM248DR (Texas Instruments) — This part offers 4-circuit general-purpose amplifier configuration with 14-SOIC package (0.154", 3.90mm) and enhanced supply range (8 V to 36 V). Output current is 25 mA per channel. ROHS3 compliance and MSL 1 rating are provided. Active production status ensures availability. Note: Minimum supply voltage is 8 V; applications requiring 3 V to 7 V operation are not compatible.
Alternative Substitutes (Limited Availability):
LM2902DRG3 (Texas Instruments) — Last Time Buy status. Provides 4-circuit configuration, 14-SOIC package (0.154", 3.90mm), 3 V to 26 V supply range, and -40°C to 125°C operating temperature. Output current is 30 mA per channel. ROHS3 compliance and MSL 1 rating are provided. Inventory availability is limited; procurement should be prioritized if this part is selected.
LM2902KD (Texas Instruments) — Last Time Buy status. Provides 4-circuit configuration, 14-SOIC package (0.154", 3.90mm), 3 V to 26 V supply range, and -40°C to 125°C operating temperature. Output current is 30 mA per channel. ROHS3 compliance and MSL 1 rating are provided. Packaged in Tube format. Inventory availability is limited.
Not Recommended:
LM2902D (onsemi) — RoHS non-compliant status disqualifies this part for applications requiring RoHS compliance. Obsolete status indicates discontinued production.
LM2902DR (Rohm Semiconductor) — Obsolete status indicates discontinued production and limited availability.
LM2902KDR (Rohm Semiconductor) — Obsolete status indicates discontinued production and limited availability.
Frequently Asked Questions (FAQ)
Q: Can the LM2902HDT be directly replaced with any of the substitute parts listed?
A: Direct replacement is possible only with parts maintaining identical package dimensions (14-SOIC with 0.154" width, 3.90mm width) and compatible electrical specifications. LM2902DR2G, LM2902KAVQDRQ1, LM2902KAVQDR, LM248DR, LM2902DRG3, and LM2902KD meet these criteria. BA2902SF-E2 has a different package width (0.173", 4.40mm) and requires PCB layout verification before implementation.
Q: What is the significance of the 14-SOIC package width difference between 0.154" and 0.173"?
A: The package width directly affects PCB footprint compatibility. A 0.173" width package (BA2902SF-E2) is physically larger than the 0.154" width package (LM2902HDT and most substitutes). While the pin pitch and lead count remain identical, the wider body may not fit within existing PCB pad layouts designed for the narrower package. PCB design verification is mandatory before substituting BA2902SF-E2.
Q: Which substitute parts are recommended for new designs?
A: LM2902DR2G (onsemi) and LM2902KAVQDRQ1 (Texas Instruments) are recommended for new designs. Both are in active production, ROHS3 compliant, have MSL 1 ratings, and offer enhanced performance characteristics. LM2902KAVQDRQ1 includes automotive qualification (AEC-Q100) for applications requiring this certification.
Q: What is the difference between LM2902KAVQDR and LM2902KAVQDRQ1?
A: Both parts are automotive-qualified (AEC-Q100) with identical electrical specifications. The primary difference is maximum supply voltage: LM2902KAVQDR supports 30 V maximum (matching the LM2902HDT exactly), while LM2902KAVQDRQ1 supports 32 V maximum. Output current per channel differs: LM2902KAVQDR provides 30 mA, while LM2902KAVQDRQ1 provides 60 mA. Both are in active production.
Q: Are there supply voltage compatibility concerns with any substitute parts?
A: Yes. LM248DR has a minimum supply voltage of 8 V, making it incompatible with applications requiring operation below 8 V. The LM2902HDT and most substitutes support 3 V minimum supply voltage. LM2902D, LM2902DRG3, LM2902KD, and LM2902KDR have maximum supply voltages of 26 V, which is below the LM2902HDT's 30 V maximum. Applications requiring full 30 V operation must use LM2902KAVQDR, LM2902DR2G, BA2902SF-E2, or LM248DR.
Q: What is the impact of operating temperature range differences?
A: The LM2902HDT operates from -40°C to 150°C. Most substitute parts operate to 125°C maximum, reducing the upper temperature capability by 25°C. LM248DR operates only to 85°C maximum, significantly limiting high-temperature applications. For applications requiring operation above 125°C, the LM2902HDT's extended range cannot be matched by available substitutes. For applications operating at or below 125°C, all listed substitutes are compatible.
Q: What does "Last Time Buy" status mean for LM2902DRG3 and LM2902KD?
A: Last Time Buy status indicates that the manufacturer has announced end-of-life for the part and will accept orders only until a specified cutoff date. After this date, the part will no longer be available from the manufacturer. Existing inventory may be available from distributors, but supply is finite and will eventually be exhausted. These parts should be considered for legacy system support only, not for new designs.
Q: Why is RoHS compliance important in the substitute selection?
A: RoHS (Restriction of Hazardous Substances) compliance is a regulatory requirement in many markets, particularly the European Union. ROHS3 compliance indicates the part meets current environmental standards and can be legally sold in regulated markets. LM2902D is RoHS non-compliant and cannot be used in applications subject to RoHS regulations. All other listed substitutes are ROHS3 compliant.
Q: What is Moisture Sensitivity Level (MSL) and why does it matter?
A: MSL indicates the maximum time a component can be stored at room temperature (typically 30°C, 60% relative humidity) before it must be baked to remove absorbed moisture. MSL 3 (LM2902HDT) allows 168 hours of storage, while MSL 1 (most substitutes) allows unlimited storage. Lower MSL ratings reduce the risk of moisture-induced failures during assembly and provide greater flexibility in inventory management and supply chain logistics.
Q: Can LM2902HDT be used in automotive applications?
A: The LM2902HDT itself is not automotive-qualified. However, automotive-qualified substitutes are available: LM2902KAVQDR and LM2902KAVQDRQ1 (both AEC-Q100 qualified). These parts are specifically tested and certified for automotive applications and should be used for any automotive design requiring this component.
Q: What output current capability should be considered when selecting a substitute?
A: The LM2902HDT provides 20 mA output current per channel. Most substitutes provide 30 mA or higher, offering improved drive capability. LM248DR provides 25 mA, and LM2902KAVQDRQ1 provides 60 mA. Higher output current capability allows the amplifier to drive lower impedance loads or provide greater output power. Applications designed for 20 mA output current are compatible with all higher-current substitutes; applications requiring specific current limiting should verify the substitute's output current specification.
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