MMBT3906 Equivalent & Substitute Parts

Part Overview

The MMBT3906 is a surface-mount PNP bipolar junction transistor manufactured by Taiwan Semiconductor Corporation, housed in a SOT-23 package. This component operates at a maximum collector current of 200 mA, supports collector-emitter breakdown voltage of 40 V, and delivers 350 mW maximum power dissipation. The device is classified as Active product status and is ROHS3 compliant.

Substitute parts are necessary when the primary MMBT3906 variant becomes unavailable due to packaging format requirements, inventory constraints, or manufacturer discontinuation. Alternative part numbers maintain electrical equivalence while offering different packaging configurations or sourcing options from qualified manufacturers.

Substiute Parts

MMBT3906

Taiwan Semiconductor CorporationIn Stock: 1805447MMBT3906 Datasheet

Current PartRFQ

MMBT3906 RFG

Taiwan Semiconductor CorporationIn Stock: 106496MMBT3906 RFG Datasheet

Parametric EquivalentRFQ

MMBT3906L RFG

Taiwan Semiconductor CorporationIn Stock: 71231MMBT3906L RFG Datasheet

Parametric EquivalentRFQ

MMBT3906-HF

Comchip TechnologyIn Stock: 3228MMBT3906-HF Datasheet

SimilarRFQ

MMBT3906-TP

Micro Commercial CoIn Stock: 464274MMBT3906-TP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMBT3906 is determined by strict electrical and mechanical parameter matching. All substitute parts must satisfy the following criteria:

Electrical Parameters (Non-Negotiable):

• Transistor Type: PNP
• Current - Collector (Ic) Max: 200 mA
• Voltage - Collector Emitter Breakdown (Max): 40 V
• Frequency - Transition: 250 MHz
• DC Current Gain (hFE) Min @ Ic, Vce: 100 @ 10mA, 1V
• Operating Temperature Range: -55°C to 150°C

Mechanical Parameters (Non-Negotiable):

• Package / Case: TO-236-3, SC-59, SOT-23-3
• Mounting Type: Surface Mount

Acceptable Variations:

• Power dissipation may vary between 300 mW and 350 mW
• Vce Saturation specifications may differ within acceptable ranges
• Packaging format (Tape & Reel, Cut Tape, or standard) does not affect electrical substitution
• Manufacturer source may differ provided all electrical and mechanical parameters align

Parts are classified as Parametric Equivalent when all electrical and mechanical parameters match exactly. Parts are classified as Similar when minor parameter variations exist within acceptable engineering tolerances.

Parameter Comparison

Engineering Selection Recommendations

MMBT3906 RFG (Taiwan Semiconductor Corporation)

This part is a parametric equivalent to the primary MMBT3906. All electrical specifications match exactly, including collector current, breakdown voltage, power dissipation, and frequency response. The part is Active status and ROHS3 compliant. The Tape & Reel packaging format is suitable for automated assembly processes. This substitute is appropriate for high-volume production environments requiring reel-based component handling.

MMBT3906L RFG (Taiwan Semiconductor Corporation)

This part is a parametric equivalent to the primary MMBT3906 with identical electrical specifications. However, the product status is listed as Obsolete, indicating this part number is no longer in active production. The Cut Tape packaging format is suitable for lower-volume or manual assembly operations. This substitute should be selected only when existing inventory is available and future procurement is not required.

MMBT3906-HF (Comchip Technology)

This part is classified as similar to the primary MMBT3906. All critical electrical parameters match, including collector current, breakdown voltage, and frequency response. Minor variations exist: Vce Saturation is 300 mV (versus 400 mV in the primary part), Current - Collector Cutoff is 100 µA (versus 100 nA), and Power - Max is 300 mW (versus 350 mW). These variations remain within acceptable engineering tolerances for most applications. The part is Active status and ROHS3 compliant. Tape & Reel packaging is provided.

MMBT3906-TP (Micro Commercial Co)

This part is classified as similar to the primary MMBT3906. All critical electrical parameters match, including collector current, breakdown voltage, and frequency response. Power dissipation is 300 mW (versus 350 mW in the primary part). This variation remains within acceptable engineering tolerances. The part is Active status and ROHS3 compliant. Tape & Reel packaging is provided. High inventory availability (464,200 pieces) supports consistent supply.

Frequently Asked Questions (FAQ)

Q: Can MMBT3906 RFG be used as a direct replacement for MMBT3906?

A: Yes. MMBT3906 RFG is a parametric equivalent with identical electrical specifications. The only difference is the packaging format (Tape & Reel versus standard). Both parts satisfy all electrical and mechanical requirements for substitution.

Q: What is the difference between MMBT3906 RFG and MMBT3906L RFG?

A: Both parts are parametric equivalents with identical electrical specifications. The primary difference is packaging format: MMBT3906 RFG uses Tape & Reel format, while MMBT3906L RFG uses Cut Tape format. Additionally, MMBT3906L RFG is listed as Obsolete product status, indicating discontinued production.

Q: Can MMBT3906-HF replace MMBT3906 in all applications?

A: MMBT3906-HF is a similar substitute with matching core electrical parameters. However, three minor variations exist: Vce Saturation is lower (300 mV versus 400 mV), Current - Collector Cutoff is higher (100 µA versus 100 nA), and Power - Max is lower (300 mW versus 350 mW). These differences are acceptable for most applications but should be evaluated against specific circuit requirements.

Q: Why does MMBT3906-TP have lower power dissipation than MMBT3906?

A: MMBT3906-TP is rated at 300 mW maximum power dissipation compared to 350 mW for the primary MMBT3906. This represents a 14% reduction in power handling capability. Applications requiring sustained power dissipation near 350 mW should use the primary MMBT3906 or MMBT3906 RFG.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (MMBT3906 RFG, MMBT3906L RFG, MMBT3906-HF, and MMBT3906-TP) are ROHS3 compliant and REACH unaffected, matching the compliance status of the primary MMBT3906.

Q: What packaging formats are available for MMBT3906 substitutes?

A: Three packaging formats are available: Standard (primary MMBT3906), Tape & Reel (MMBT3906 RFG, MMBT3906-HF, MMBT3906-TP), and Cut Tape (MMBT3906L RFG). All formats use the same SOT-23 case style and are mechanically compatible.

Q: Should MMBT3906L RFG be selected for new designs?

A: No. MMBT3906L RFG is listed as Obsolete product status, indicating discontinued production. For new designs, select from Active status parts: MMBT3906, MMBT3906 RFG, MMBT3906-HF, or MMBT3906-TP.

Q: What is the difference between manufacturers (Taiwan Semiconductor Corporation, Comchip Technology, Micro Commercial Co)?

A: All manufacturers produce parts meeting the same electrical and mechanical specifications. Manufacturer selection depends on supply chain requirements, inventory availability, and procurement preferences. All listed manufacturers provide ROHS3 compliant components.