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TA6F9.1AHM3/6B Equivalent & Substitute Parts
Part Overview
The TA6F9.1AHM3/6B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for transient overvoltage protection in automotive and industrial applications. The part operates with a reverse standoff voltage of 7.78V and provides clamping at 13.4V with peak pulse current handling of 44.8A. The TA6F9.1AHM3/6B is currently classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Voltage - Reverse Standoff (Typ) | 7.78V |
| Voltage - Breakdown (Min) | 8.65V |
| Voltage - Clamping (Max) @ Ipp | 13.4V |
| Current - Peak Pulse (10/1000µs) | 44.8A |
| Power - Peak Pulse | 600W |
| Operating Temperature Range | -65°C ~ 185°C (TJ) |
| Package / Case | DO-221AC, SMA Flat Leads |
| Mounting Type | Surface Mount |
| Grade | Automotive |
| Qualification | AEC-Q101 |
Substitute Part Grouping Explanation
Substitution for the TA6F9.1AHM3/6B is determined by strict equivalence across the following critical parameters:
- Voltage - Reverse Standoff: 7.78V (Typ)
- Voltage - Clamping: 13.4V (Max) @ Ipp
- Current - Peak Pulse: 44.8A (10/1000µs)
- Power - Peak Pulse: 600W
- Package / Case: DO-221AC, SMA Flat Leads
- Mounting Type: Surface Mount
- Operating Temperature Range: -65°C ~ 185°C (TJ)
- Automotive Grade and AEC-Q101 Qualification
The substitute part TA6F9.1AHM3_A/I maintains identical electrical specifications and mechanical compatibility. The primary distinction is product status and packaging configuration.
Parameter Comparison
| Parameter | TA6F9.1AHM3/6B (Main) | TA6F9.1AHM3_A/I (Substitute) |
|---|---|---|
| Manufacturer | Vishay General Semiconductor - Diodes Division | Vishay General Semiconductor - Diodes Division |
| Category | Transient Voltage Suppressors (TVS) | Transient Voltage Suppressors (TVS) |
| Type | Zener | Zener |
| Unidirectional Channels | 1 | 1 |
| Voltage - Reverse Standoff (Typ) | 7.78V | 7.78V |
| Voltage - Breakdown (Min) | 8.65V | 8.65V |
| Voltage - Clamping (Max) @ Ipp | 13.4V | 13.4V |
| Current - Peak Pulse (10/1000µs) | 44.8A | 44.8A |
| Power - Peak Pulse | 600W | 600W |
| Operating Temperature | -65°C ~ 185°C (TJ) | -65°C ~ 185°C (TJ) |
| Grade | Automotive | Automotive |
| Qualification | AEC-Q101 | AEC-Q101 |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | DO-221AC, SMA Flat Leads | DO-221AC, SMA Flat Leads |
| Product Status | Obsolete | Active |
| Packaging Configuration | Bulk | Tape & Reel (TR) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
The TA6F9.1AHM3_A/I is a direct functional equivalent to the TA6F9.1AHM3/6B. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical and mechanical specifications. The substitute part holds active product status, ensuring ongoing availability and manufacturing support. Both components maintain automotive-grade qualification and AEC-Q101 certification, meeting the same reliability and quality standards. The primary difference is packaging configuration: the substitute is supplied in Tape & Reel format, which is standard for production environments. Selection between these parts should be based on procurement requirements and packaging needs rather than technical performance, as electrical and thermal characteristics are equivalent.
Frequently Asked Questions (FAQ)
Q: Can TA6F9.1AHM3_A/I be used as a direct replacement for TA6F9.1AHM3/6B?
A: Yes. Both parts are electrically and mechanically identical. The substitute maintains the same voltage ratings (7.78V standoff, 13.4V clamping), current handling (44.8A peak pulse), power dissipation (600W), operating temperature range (-65°C to 185°C), and package configuration (DO-221AC, SMA Flat Leads). Both are automotive-grade with AEC-Q101 qualification.
Q: What is the difference between these two part numbers?
A: The primary difference is product status and packaging. The TA6F9.1AHM3/6B is obsolete and supplied in bulk packaging. The TA6F9.1AHM3_A/I is active and supplied in Tape & Reel format, which is standard for automated assembly and production environments.
Q: Are there any compliance or certification differences?
A: No. Both parts are ROHS3 compliant, REACH unaffected, and hold identical automotive-grade qualification with AEC-Q101 certification. Moisture sensitivity level is 1 (Unlimited) for both.
Q: Is the DO-221AC package compatible with existing PCB designs?
A: Yes. Both parts use the identical DO-221AC (SlimSMA) package with SMA flat leads. PCB footprints, soldering requirements, and mechanical mounting are identical.
Q: Can I mix these parts in the same production batch?
A: Yes, provided your assembly process can accommodate both bulk and Tape & Reel packaging formats. The electrical and mechanical specifications are identical, so functional performance is equivalent.
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