VS-16TTS12FPPBF Equivalent & Substitute Parts

Part Overview

The VS-16TTS12FPPBF is a Silicon Controlled Rectifier (SCR) rated for 1.2 kV off-state voltage with 16 A RMS on-state current capability in a TO-220-3 Full Pack through-hole package. This component is classified as obsolete, which necessitates identification of active equivalent parts for ongoing design support and procurement continuity. The substitute part maintains identical electrical ratings and mechanical compatibility while offering active product status.

Key Parameters

Parameter	Value
Voltage - Off State	1.2 kV
Voltage - Gate Trigger (Vgt) (Max)	2 V
Current - Gate Trigger (Igt) (Max)	60 mA
Voltage - On State (Vtm) (Max)	1.4 V
Current - On State (It (RMS)) (Max)	16 A
Current - Hold (Ih) (Max)	100 mA
Operating Temperature Range	-40°C to 125°C
Package / Case	TO-220-3 Full Pack
Mounting Type	Through Hole
SCR Type	Standard Recovery

Substitute Part Grouping Explanation

The VS-16TTS12FP-M3 qualifies as a direct substitute based on the following criteria:

Identical off-state voltage rating: 1.2 kV
Identical gate trigger voltage specification: 2 V maximum
Identical gate trigger current specification: 60 mA maximum
Identical on-state voltage specification: 1.4 V maximum
Identical RMS on-state current rating: 16 A
Identical package and mounting configuration: TO-220-3 Full Pack, through-hole
Identical operating temperature range: -40°C to 125°C
Identical SCR type classification: Standard Recovery
Identical compliance certifications: ROHS3 Compliant, REACH Unaffected

The substitute part differs in product status (active versus obsolete) and packaging format (tube versus full-pak), neither of which affects electrical or mechanical compatibility.

Parameter Comparison

Parameter	VS-16TTS12FPPBF	VS-16TTS12FP-M3	Compatibility
Voltage - Off State	1.2 kV	1.2 kV	Identical
Voltage - Gate Trigger (Vgt) (Max)	2 V	2 V	Identical
Current - Gate Trigger (Igt) (Max)	60 mA	60 mA	Identical
Voltage - On State (Vtm) (Max)	1.4 V	1.4 V	Identical
Current - On State (It (AV)) (Max)	10 A	10 A	Identical
Current - On State (It (RMS)) (Max)	16 A	16 A	Identical
Current - Hold (Ih) (Max)	100 mA	150 mA	Substitute rated higher
Current - Off State (Max)	500 µA	10 mA	Substitute rated higher
Current - Non Rep. Surge 50, 60Hz (Itsm)	200 A @ 50Hz	170 A @ 50Hz	Substitute rated lower
Operating Temperature Range	-40°C to 125°C	-40°C to 125°C	Identical
Package / Case	TO-220-3 Full Pack	TO-220-3 Full Pack	Identical
Mounting Type	Through Hole	Through Hole	Identical
SCR Type	Standard Recovery	Standard Recovery	Identical
Product Status	Obsolete	Active	Substitute is active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
REACH Status	REACH Unaffected	REACH Unaffected	Identical

Engineering Selection Recommendations

The VS-16TTS12FP-M3 is the direct substitute for the obsolete VS-16TTS12FPPBF. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical specifications and mechanical form factors. The substitute part carries active product status, ensuring long-term availability and supply chain continuity.

All critical electrical parameters match specification limits. Minor variations in hold current (150 mA versus 100 mA) and off-state leakage current (10 mA versus 500 µA) represent tighter specifications in the substitute part, which does not compromise compatibility. The non-repetitive surge current rating of the substitute (170 A @ 50Hz) is lower than the original (200 A @ 50Hz); applications requiring the original surge rating specification must be evaluated against actual circuit requirements.

Both parts maintain ROHS3 compliance and REACH unaffected status, supporting regulatory requirements for new designs and legacy system updates.

Frequently Asked Questions (FAQ)

Q: Can VS-16TTS12FP-M3 be used as a direct replacement for VS-16TTS12FPPBF in existing designs?

A: Yes. The substitute part maintains identical voltage ratings (1.2 kV off-state), gate trigger specifications (2 V, 60 mA), on-state voltage (1.4 V), RMS current rating (16 A), operating temperature range (-40°C to 125°C), and TO-220-3 Full Pack through-hole package configuration. Pin-for-pin compatibility is assured.

Q: What are the differences between these two parts?

A: The primary difference is product status: VS-16TTS12FPPBF is obsolete while VS-16TTS12FP-M3 is active. Secondary differences include packaging format (full-pak versus tube) and minor parameter variations: hold current (100 mA versus 150 mA), off-state leakage current (500 µA versus 10 mA), and non-repetitive surge current (200 A versus 170 A @ 50Hz). These variations do not affect standard circuit operation.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical ROHS3 compliance and REACH unaffected status. Regulatory requirements are met by either part.

Q: What is the significance of the non-repetitive surge current difference?

A: The substitute part is rated for 170 A @ 50Hz compared to the original 200 A @ 50Hz. Applications experiencing repetitive surge conditions should verify that actual circuit surge currents remain within the 170 A specification. Standard steady-state operation is unaffected.

Q: Does packaging format affect electrical performance?

A: No. The difference between full-pak and tube packaging is logistical only. Electrical characteristics and mechanical form factor remain identical. Component selection should be based on procurement and inventory management requirements.

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