Source: https://guthlabs.ai/docs/instruments/bjt-bias-point-calculator-voltage-divider-bias/qualification/

instrument qualification / verified-with-binding-errata

# BJT Bias Point Calculator (Voltage Divider Bias) qualification

Verified with errata that must be applied at binding time.

Status: **VERIFIED_WITH_ERRATA**Lifecycle: **verified-with-binding-errata**

## Ledger verdict

Verified with errata that must be applied at binding time.

**Status**: VERIFIED_WITH_ERRATA

**Tranche**: tranche-5

**Review vectors**: 4

**Ledger rows**: 1

## Applied errata

````
[
  {
    "vector": 2,
    "field": "VB/IE/VCE",
    "wrong": "VB 2, IE 1.3, VCE 2.4",
    "correct": "VB 2.5, IE 1.8, VCE 1.4",
    "cause": "5×10/20 written as 2 in working; cascade"
  },
  {
    "vector": 4,
    "field": "VB_V",
    "wrong": 2,
    "correct": 2.5,
    "cause": "same slip, but v4 IE/VCE are consistent with the CORRECT VB=2.5 — only the VB field wrong"
  }
]
````

## Adversarial re-test context

The full catalog was re-tested from boundary, convention, and self-check angles in 2,787 requests. Five genuine computational defects were independently verified and corrected. This page reports the current ledger state for this instrument; it does not imply product deployment or interface qualification.

## Release gate

Bind every attached correction, replay the affected vectors, enforce boundary validation, and preserve evidence before describing the executable surface as qualified.

## Other records

[01**Overview**](<https://guthlabs.ai/docs/instruments/bjt-bias-point-calculator-voltage-divider-bias/>)[02**Mechanism**](<https://guthlabs.ai/docs/instruments/bjt-bias-point-calculator-voltage-divider-bias/mechanism/>)[03**Implementation**](<https://guthlabs.ai/docs/instruments/bjt-bias-point-calculator-voltage-divider-bias/implementation/>)

## Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

- `VERIFIED_LEDGER.json`

- `STRESS_TEST_RECEIPT.json`

- `tranche errata record`